Remove components not soldered at front

2024-11-21 11:30:56 +01:00
62 changed files with 390132 additions and 477924 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,5 +1,6 @@
 #temporary
 datasheets/
+pi-interface-board_v1.0/export/
 export/
 pcb2gcode/
 cad/import
@ -9,12 +10,10 @@ cad/import
 \#auto_saved_files\#
 *.lck
 _autosave-*
-fp-info-cache

 *.kicad_sch-back
 *.bak
 *.kicad_sch-bak
-*.kicad_prl

 #drawio
 *.bkp
@ -22,11 +21,4 @@ fp-info-cache

 #freecad
 *.FCBak
-*.stl
-
-
-#vim
-*.swp
-
-#python
-__pycache__
+*.stl
--- a/README.md
+++ b/README.md
@ -1,393 +1,128 @@
-# Raspberry Pi Extension Board
-
-A custom PLC-like system based on the Raspberry Pi.  
-With a custom interface board, a Raspberry Pi is extended with protected I/O, bus systems, analog inputs, and Relay or PWM outputs. All components, including a display, are housed in a custom-designed enclosure.  
-  
-The project is intended for versatile use in prototyping and project development.
-
-
+A Raspberry Pi-compatible PCB that extends the GPIO header with protected I/O, relays, and various features for versatile use in prototyping and project development.
 ---

-# TOC
- [Photos](#photos)
- [Repository Content](#repository-content)
- [Features Overview](#features-overview)
- [Designed PCBs](#designed-pcbs)
-  * [1. Raspberry Pi Interface Board](#1-raspberry-pi-interface-board)
-  * [2. Power Supply Board](#2---power-supply-board--)
-  * [3. LED Boards](#3---led-boards--)
- [Raspberry Pi Usage](#raspberry-pi-usage)
-  * [Connectivity](#connectivity)
-    + [LAN Connection (Ethernet)](#lan-connection--ethernet-)
-    + [WiFi Connection](#wifi-connection)
-    + [SSH Access](#ssh-access)
-    + [Remote Desktop (RDP)](#remote-desktop--rdp-)
-    + [Mount Raspberry Pi Filesystem in Windows (SAMBA)](#mount-raspberry-pi-filesystem-in-windows--samba-)
- [Python Scripting](#python-scripting)
-  * [Running Python Examples](#running-python-examples)
-  * [Starting a New Python Project with I/O Access](#starting-a-new-python-project-with-i-o-access)
-  * [GUI Interface](#gui-interface)
- [Housing](#housing)
- [Dropped Features](#dropped-features)
-
-
-
-# Photos
-#### Photo of all Hardware Components
-### All components:
-  <img src="doc/photos/all-components.jpg" alt="All Components (Disassembled)" width="65%"/>
-
-### Assembly:
-  <img src="doc\photos\all-connected.jpg" alt="" width="65%"/>
-
-### Finished Project:
-  <img src="doc\photos\final_diagonal-view.jpg" alt="" width="65%"/>
-  <img src="doc\photos\final_back-view.jpg" alt="" width="65%"/>
-  <img src="doc\photos\final_right-view.jpg" alt="" width="55%"/>
-
-### Detail views with annotations:
-  <img src="doc\photos\interface-board_top_annotated.jpg" alt="" width="65%"/>
-  <img src="doc\photos\supply-raspberry_annotated.jpg" alt="" width="65%"/>
-
-
---
-
-
-# Repository Content
- **KiCad Projects**: 3 KiCad projects with schematics and PCB layouts for the custom PCBs created.
- **Housing**: Custom enclosure design for PCBs and Raspberry Pi created in FreeCAD.
- **Software/Firmware**: Python scripts run on the Raspberry Pi for operating and testing the PCB features and providing examples as base for future projects.
-
-
---
-
-
-# Features Overview
-This project provides:
- Protected GPIO I/O for Raspberry Pi.
- Various analog inputs.
- Flexible power supply options (3.3 V, 5 V, -5 V, 12 V, 24 V outputs).
- Relay and MOSFET control.
- Integrated LEDs for status indication.
- RS485, I2C, SPI, and UART bus communication.
-
-Detailed features of each PCB are described in the respective sections below.
-
---
-
-# Designed PCBs
-
-## 1. Raspberry Pi Interface Board
-This board connects to the Raspberry Pi via a 40-pin ribbon cable and provides protected GPIO extensions and versatile input/output features.
-
-### Photo
-<img src="doc/photos/rpi-interface-board.jpg" alt="Raspberry Pi Interface Board" width="80%"/>
-
-### Features
-**Inputs**:
- **8x Digital Inputs**:
-  - Wide voltage range (-1.7 V to 120 V) → compatible with 3 V and 24 V devices.
-  - TVS diodes for ESD and spike protection.
-  - Reverse polarity protection.
-  - Isolated with optocouplers.
-  - Optional low-pass filters (toggle via DIP switches).
-
- **8x Analog Inputs**:
-  - Different fixed range inputs:
-    - 2x 0 - 3.3 V.
-    - 2x 0 - 5 V.
-    - 1x 0 - 12 V.
-    - 1x 0 - 24 V.
-    - 2x 0 - 20 mA.
-  - Overvoltage protection with clamping diodes.
-  - Optional low-pass filters (toggle via DIP switches).
-
-**Outputs**:
- 1x onboard buzzer.
- 2x 16 A relays.
- 2x high-power MOSFETs (N-channel, max 55 V, 33 A continuous, 160 A pulsed).
- 8x digital outputs (via shift register):
-  - Low-power (30 mA push-pull) and high-power (500 mA open-drain) outputs.
-  - Buzzer and relays connected to channels 6-8, with enable/disable switches.
-  - **Note**: Outputs are **not short-circuit proof**.
-
-**General**:
- WAGO spring-loaded terminals for easy wiring.
- JST connectors for external LEDs for all inputs and outputs to indicate the current pin state.
-
-**Bus Communication**:
- RS485 (TVS protection, idle pull-up/pull-down, 120 Ω terminator).
- UART (unprotected).
- I2C (TVS diodes, 2.2 kΩ pull-ups).
- SPI (unprotected).
-  - **Note**: RS485 and UART cannot be used simultaneously (select via jumpers).
-
-### Schematic and Layout
-<p align="center">
-  <a href="pi-interface-board_v1.0/export/schematic_interface-board.pdf">
-    <img src="pi-interface-board_v1.0/export/schematic_interface-board.svg" width="49%" alt="Schematic"/>
-  </a>
-  <img src="pi-interface-board_v1.0/export/layout_interface-board.png" width="49%" alt="PCB Layout"/>
-</p>
-
-
---
-
-
-## 2. Power Supply Board
-Creates different voltages from supplied 24 V. Supply for the Raspberry Pi interface board as well as several terminals for variable use (connect sensors, devices, etc., to the housing).
-
-### Photo
-<img src="doc/photos/power-supply-board.jpg" alt="Power Supply Board" width="60%"/>
-
-### Features
-**Input**:
- 24 V 5 A barrel plug.
- 5 A self-resetting polyfuse.
- Reverse polarity protection.
-
-**Output**:
- 3.3 V, 3 A (buck converter).
- 5 V, 5 A (buck converter).
- -5 V, 20 mA (charge pump).
- 12 V, 3 A (buck converter).
- 24 V (supply voltage filtered).
-
-**Fan Control**:
- 2x connector for 10 kΩ NTC.
- Threshold adjustable (trimmer potentiometer).
- Hysteresis adjustable (trimmer potentiometer).
- Select between 5 V or 12 V fan.
-
-**General**:
- Spring-loaded terminals for each voltage.
- Combined internal terminals for all voltages.
-
-### Schematic and Layout
-<p align="center">
-  <a href="power-supply-board_v1.0/export/schematic_power-supply.pdf">
-    <img src="power-supply-board_v1.0/export/schematic_power-supply.svg" width="55%" alt="Schematic"/>
-  </a>
-  <img src="power-supply-board_v1.0/export/layout_power-supply.png" width="44%" alt="PCB Layout"/>
-</p>
-
---
-
-## 3. LED Boards
-Small PCBs with LEDs, resistors, and mounting holes for housing indicators.
-
-### Photo
-<img src="doc/photos/led-boards.jpg" alt="LED Boards" width="60%"/>
-
-### Boards
-1. 2x 5 mm LEDs for relays.
-2. 2x 5 mm LEDs for PWM outputs.
-3. 8x 3 mm yellow LEDs for analog inputs.
-4. 8x 3 mm orange LEDs for digital inputs.
-5. 8x 3 mm red LEDs for digital outputs.
-
-### Schematic and Layout
-<p align="center">
-  <a href="led-boards_v0.1/export/schematic_led-boards.pdf">
-    <img src="led-boards_v0.1/export/schematic_led-boards.svg" width="48%" alt="Schematic"/>
-  </a>
-  <img src="led-boards_v0.1/export/layout_led-boards.png" width="51%" alt="PCB Layout"/>
-</p>
-
-
-<br>
-
---
-
-<br>
-
-# Raspberry Pi Usage
-
-## Connectivity
-The Raspberry Pi can operate **standalone** with a connected keyboard, mouse, and HDMI monitor, or by using the integrated display in the housing.  
-
-However, for **development**, it is recommended to connect it to a network via **WiFi or LAN**, allowing easy remote access from a laptop. A direct **Ethernet connection** between the Raspberry Pi and a laptop is often the simplest method.
-
-### LAN Connection (Ethernet)
- **Connection**: Connect cable directly between raspberry and PC
- **Configure the PC interface**: Set a static ip address e.g. `192.168.1.1/24`  
-  Note: Optionally also enable network sharing to enable the RPI to use the internet connection the PC currently has.
- **Configure the Raspberry Interface**: Set a static ip address e.g. `192.168.1.100/24`  
-  The Raspberry Pi can be configured for **Ethernet access** using different methods:
-  - **Boot Partition Configuration:** Modify `cmdline.txt` on the SD card.
-  - **GUI Setup:** Use the built-in network manager if a monitor is connected.
-  - **Command Line (`nmcli`)**: Configure networking via the terminal.  
-
-To check the assigned IP run:
-```bash
-ip a
-```
-
-### WiFi Connection
-Probably the **fastest and easiest** way to set up communication between the Raspberry Pi and a PC - while even maintaining internet access - is to **use a mobile phone as a WiFi hotspot**.  
-Simply **connect both the Raspberry Pi and the laptop** to the same hotspot.
-
-To connect to a WiFi network, use:
-```bash
-nmcli device wifi connect <SSID> password <password>
-```
-Replace `<SSID>` and `<password>` with the actual credentials.  
-The Raspberry Pi will **automatically reconnect** after a reboot.  
- 
-Once connected, you can check the assigned IP on the Raspberry Pi using:
- ```
- ip a
- ```
-
-### SSH Access
-For remote terminal access, connect via SSH from a laptop:
-```bash
-ssh pi@192.168.1.100
-```
-Replace the IP with the actual address of the Raspberry Pi.
-
-### Remote Desktop (RDP)
-To control the Raspberry Pi’s **GUI remotely**, RDP is pre-configured.
-
-#### Connect via Windows Remote Desktop:
- Open **Remote Desktop Connection (mstsc)**.
- Enter the Raspberry Pi’s IP address.
- **Login:**  
-  - **User:** `root`  
-  - **Password:** (configured during setup)  
-  - **Note:** Logging in as `pi` may result in a black screen.
-
-#### Alternatively, use PowerShell:
-```powershell
-mstsc /v:192.168.1.100:3389
-```
-
-### Mount Raspberry Pi Filesystem in Windows (SAMBA)
-For convenient file access and editing (e.g., with **VS Code**), the Raspberry Pi’s `/home/pi` directory can be **mounted as a network drive** using Samba.
-
-#### Steps:
-1. Determine the Raspberry Pi’s IP address:
-   ```bash
-   ip a
-   ```
-2. Mount the `/home/pi` directory in Windows:
-   ```powershell
-   net use X: \\192.168.1.100\pi /user:pi
-   ```
-   Replace `192.168.1.100` with the actual IP address.
-
-**Note:**  
-Currently, only `/home/pi` is available for mounting. To share additional directories, edit the Samba configuration file:
-```bash
-# add a new `[share]` section with the desired folder path and permissions.
-sudo nano /etc/samba/smb.conf
-# then restart samba
-sudo systemctl restart smbd
-```
-
-
-<br>
-
---
-
-<br>
-
-
-# Python Scripting
-All **terminal-to-pin assignments** are mapped in [`interface_board_pins.py`](rpi-scripts/interface_board_pins.py), allowing easy reference to terminal numbers labeled on the housing.  
-
-Example scripts demonstrating I/O control can be found in [`rpi-scripts/examples`](rpi-scripts/examples).
-
---
-
-## Running Python Examples
-Pre-written **Python scripts** to control I/O terminals are located in:
-```
-rpi-scripts/examples
-```
-To run an example, execute:
-```bash
-cd /home/pi/git/rpi-interface-board/rpi-scripts/examples/
-python read_digital_inputs.py
-```
-
---
-
-## Starting a New Python Project with I/O Access
-To create a custom Python project using the **interface board**, follow these steps:
-
-1. **Copy the entire `rpi-scripts/` folder** to your new project directory.
-2. **Remove unnecessary files**, keeping at least:
-   - `rpi-scripts/interface_board_libs/` → contains custom drivers.
-   - `rpi-scripts/interface_board_pins.py` → maps terminal numbers to GPIO/ADC channels.
-3. **Start coding** by modifying an existing example in `examples/`.
-
---
-
-## GUI Interface
-A **Python GUI** is available for **real-time monitoring** and **control** of all I/O terminals for quick testing.  
-Currently it auto starts after boot and shows on the integrated display in fullscreen mode.
-
-### Run the GUI
-```bash
-cd rpi-scripts/gui
-python main.py
-```
-
-### Enable GUI Autostart on Boot
-The GUI is configured to start automatically on boot in **fullscreen mode**. To modify this behavior:
-
-#### Enable autostart:
-```bash
-sudo cp rpi-scripts/gui/gui-start.service /etc/systemd/system/
-sudo systemctl enable gui-start.service
-```
-
-#### Disable autostart:
-```bash
-sudo systemctl disable gui-start.service
-```
-
-### GUI Screenshots
-<p align="center">
-  <img src="doc\graphics\GUI_tab-control.png" width="70%" />
-  <img src="doc\graphics\GUI_tab-adc-plot.png" width="70%" />
-  <img src="doc\graphics\GUI_tab-digital-plot.png" width="70%" />
-</p>
-
-
-<br>
-
---
-
-<br>
-
-
-# Housing
-Custom-designed enclosure includes:
- Cutouts for all Ports for Raspberry Pi.
- Mounting screws for all pcbs and Raspberry
- Fan mount + venting slots
- Cutouts for all external pcb terminals
- Cutout + mounting arms (M2.5) for Display
-<img src="doc/graphics/3d-model_housing.png" width="80%" alt="3D Model"/>
-
-
-<br>
-
---
-
-<br>
-
-
-# Dropped Features
-The following ideas were considered but not implemented:
- UI Input Elements:
-  - Buttons, DIP switches, temperature sensors, encoders, or potentiometers.
- USB or battery-powered operation:
-  - Battery packs with BMS and voltage measurement.
-  - Li-ion cell holders.
- Analog output (DAC)
- More bus systems
-  - RS232 Interface
-  - CAN Interface
+**Notes:**  
+
+# RPI Specs (Zero, 3+)
+- Available (old) Pi: Raspberry Pi 2 Model B v1.1 
+- GPIO
+  - Low: 0.9V
+  - High: 1.6V
+  - Input current: 5uA
+  - Input capacitance: 5pF
+  - Output Current +-17mA
+  - Pullup / Pulldown 50-65k
+- EEPROM GPIO0 GPIO1, leave unused
+
+
+
+# Feature Ideas
+- [x] Temperature control
+  - fan
+    - auto turn on
+      - temp sensor
+    - ~~turn on via gpio~~
+
+
+## Supply
+- Input protection
+  - [x] TVS
+  - [x] reverse polarity (polyfuse will trigger)
+  - [x] Fuse (5A polyfuse)
+  - [x] buffer
+- [x] Pass through power supply
+- [x] 3.3V, 5V, 12V, 24V Regulator
+
+- [x] power by barrel connector (24V 5A)
+- ~~power by usb~~ [not allowed]
+  - ~~Switch between power by USB or power supply?~~
+- ~~power by battery~~ [dropped]
+  - liion cell connector
+  - BMS / charge controller
+  - measure battery voltage
+  - USB charging port
+
+
+## IO
+- Input
+  - GPIO
+  - [x] wide voltage range (-1.7 to 120V)
+  - [x] TVS
+  - [x] reverse polarity (-1.73V max)
+  - [x] Low pass filter
+  - [x] Optocoupler input
+  - [x] ADC
+    - external IC
+    - ~~multiplexer?~~
+    - protection
+    - scale input voltage
+      - fixed inputs: 24V 12V 5V 3.3V
+      - 20mA input
+      - ~~trim potentiometer?~~
+- Output
+  - [x] Relay
+  - [x] Mosfet
+  - [x] Optocoupler output
+  - [ ] GPIO with over current protection
+  - [ ] GPIO level shift (24V output)
+  - [x] PWM pins
+  - [x] shift register
+  - [ ] DAC
+
+- [x] LEDS indicate I/O state
+- [ ] Testpoints
+- [x] ESD protection (tvs diodes uart, i2c...)
+
+
+## Bus
+- [x] UART/RS485
+- [ ] RS232 Connector
+- [x] I2C Pullup
+- [x] SPI
+- [ ] CAN
+- ~~Serial to usb (if Arduino)~~
+- ~~OWB default GPIO4~~
+
+
+## UI
+- Input [dropped]
+  - Buttons
+  - DIP switches?
+  - Temperature sensor
+  - Encoder
+  - Potentiometer
+- Output
+  - [ ] Display [RPI display pending]
+  - [x] Buzzer
+  - [x] LEDS
+
+
+## Mechanical
+- [x] Barrel plug (24V 3A supply)
+- ~~Screw terminals~~
+- [x] spring loaded?
+- ~~pass through all pins?~~
+
+## Housing
+- RPI ports
+-  banana sockets for power out 
+-  screw terminal exposed
+- buttons, leds: need to open up?
+-  BNC? []
+
+
+## Other
+- Extension board with multiplexer
+- Breadboard compatible?
+- SD Card
+- ~~Onboard MCU for standalone use?~~
+- ~~separate bought MCU via i2c  for additional GPIO, DAC, ADC in one~~
+
+
+## Questions
+- what analog input ranges (Voltage, Count)
+- RS232  RS485  SPI,  IIC  actually necessary? examples
+- CAN to second SPI?
+- 8x shift register outputs, 0.5A open drain or 7mA tristate
+- 2x PWM 30A enough?
+- max used PWM freq? (drop opto if >80khz)
--- a/cad/housing.FCStd
+++ b/cad/housing.FCStd
--- a/doc/annotate-photos.drawio
+++ b/doc/annotate-photos.drawio
--- a/doc/graphics/3d-model_housing.png
+++ b/doc/graphics/3d-model_housing.png
--- a/doc/graphics/GUI_tab-adc-plot.png
+++ b/doc/graphics/GUI_tab-adc-plot.png
--- a/doc/graphics/GUI_tab-control.png
+++ b/doc/graphics/GUI_tab-control.png
--- a/doc/graphics/GUI_tab-digital-plot.png
+++ b/doc/graphics/GUI_tab-digital-plot.png
--- a/doc/photos/all-components.jpg
+++ b/doc/photos/all-components.jpg
--- a/doc/photos/all-connected.jpg
+++ b/doc/photos/all-connected.jpg
--- a/doc/photos/final_back-view.jpg
+++ b/doc/photos/final_back-view.jpg
--- a/doc/photos/final_diagonal-view.jpg
+++ b/doc/photos/final_diagonal-view.jpg
--- a/doc/photos/final_right-view.jpg
+++ b/doc/photos/final_right-view.jpg
--- a/doc/photos/interface-board_top.jpg
+++ b/doc/photos/interface-board_top.jpg
--- a/doc/photos/interface-board_top_annotated.jpg
+++ b/doc/photos/interface-board_top_annotated.jpg
--- a/doc/photos/led-boards.jpg
+++ b/doc/photos/led-boards.jpg
--- a/doc/photos/power-supply-board.jpg
+++ b/doc/photos/power-supply-board.jpg
--- a/doc/photos/rpi-interface-board.jpg
+++ b/doc/photos/rpi-interface-board.jpg
--- a/doc/photos/supply-raspberry.jpg
+++ b/doc/photos/supply-raspberry.jpg
--- a/doc/photos/supply-raspberry_annotated.jpg
+++ b/doc/photos/supply-raspberry_annotated.jpg
--- a/led-boards_v0.1/export/layout_led-boards.pdf
+++ b/led-boards_v0.1/export/layout_led-boards.pdf
--- a/led-boards_v0.1/export/layout_led-boards.png
+++ b/led-boards_v0.1/export/layout_led-boards.png
--- a/led-boards_v0.1/export/schematic_led-boards.pdf
+++ b/led-boards_v0.1/export/schematic_led-boards.pdf
--- a/led-boards_v0.1/export/schematic_led-boards.svg
+++ b/led-boards_v0.1/export/schematic_led-boards.svg
--- a/led-boards_v0.1/fp-info-cache
+++ b/led-boards_v0.1/fp-info-cache
--- a/led-boards_v0.1/led-boards_v0.1.kicad_pcb
+++ b/led-boards_v0.1/led-boards_v0.1.kicad_pcb
@ -13403,7 +13403,7 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "Note milling:  mount holes on 8x led-boards cant be used with 2.2mm torx (too close to outline)"
+	(gr_text "Note milling:  mount holes om 8x led-boards cant be used with 2.2mm torx (too close to outline)"
 		(at 131.4704 95.0976 0)
 		(layer "Cmts.User")
 		(uuid "63943838-40a0-44c5-a443-8f6982aa89df")
@ -13427,7 +13427,7 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "2x PWM\n - 5mm blue\n - 15 Ohm\n - common anode"
+	(gr_text "2x PWM\n - 5mm blue\n - 20 Ohm\n - common anode"
 		(at 205.0288 48.8696 90)
 		(layer "User.4")
 		(uuid "33d1b519-e13f-4c02-9e89-5896e7524b33")
@ -13439,7 +13439,7 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "8x analog in\n - 3mm yellow\n - 47 Ohm\n - common Cathode"
+	(gr_text "8x analog in\n - 3mm yellow\n - 470 Ohm\n - common Cathode"
 		(at 114.9096 71.6026 0)
 		(layer "User.4")
 		(uuid "4eaa8315-7c92-440c-a17c-7b34641e5a7d")
@ -13463,7 +13463,7 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "8x digital out\n - 3mm red\n - 47 Ohm\n - common Anode"
+	(gr_text "8x digital out\n - 3mm red\n - 470 Ohm\n - common Anode"
 		(at 115.5446 58.5216 0)
 		(layer "User.4")
 		(uuid "ec0bb2f4-36e5-4095-bc0c-1aa615f8bbb7")
--- a/led-boards_v0.1/led-boards_v0.1.kicad_prl
+++ b/led-boards_v0.1/led-boards_v0.1.kicad_prl
@ -0,0 +1,82 @@
+{
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+    "active_layer": 44,
+    "active_layer_preset": "",
+    "auto_track_width": false,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
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+  },
+  "git": {
+    "repo_password": "",
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "led-boards_v0.1.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
--- a/led-boards_v0.1/led-boards_v0.1.kicad_sch
+++ b/led-boards_v0.1/led-boards_v0.1.kicad_sch
@ -313,7 +313,7 @@
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@ -643,7 +643,7 @@
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@ -653,7 +653,7 @@
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@ -663,7 +663,7 @@
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 	)
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-	(text "3mm yellow\n2.3V 20mA\n-> 50 Ohm -> 47 Ohm"
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-	(text "3mm red\n2.3V 20mA\n-> 50 Ohm -> 47 Ohm"
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@ -794,7 +794,7 @@
 	)
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-		(at 136.652 101.346 0)
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@ -806,7 +806,7 @@
 	)
 	(text "3mm orange\n2.4V 30mA\n=> 27 Ohm"
 		(exclude_from_sim no)
-		(at 148.082 106.426 0)
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 			(font
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@ -837,7 +837,7 @@
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 	)
 	(label "LED_digital-out_6"
-		(at 123.19 129.54 0)
+		(at 118.11 129.54 0)
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 			(font
@ -848,7 +848,7 @@
 		(uuid "072aff27-aaf2-4be4-afbf-274347824c00")
 	)
 	(label "LED_digital-out_3"
-		(at 123.19 121.92 0)
+		(at 118.11 121.92 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -859,7 +859,7 @@
 		(uuid "0d7815ad-5557-40cf-8b30-0a142e5ea8a5")
 	)
 	(label "LED_digital-out_2"
-		(at 123.19 119.38 0)
+		(at 118.11 119.38 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -881,7 +881,7 @@
 		(uuid "4b9f7c68-4da1-4f54-825b-8a53798277d6")
 	)
 	(label "LED_digital-out_4"
-		(at 123.19 124.46 0)
+		(at 118.11 124.46 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -903,7 +903,7 @@
 		(uuid "a1c798e9-8ad2-4c32-99ba-2de06794f909")
 	)
 	(label "LED_digital-out_1"
-		(at 123.19 116.84 0)
+		(at 118.11 116.84 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -914,7 +914,7 @@
 		(uuid "a7d8e74e-73bd-4897-8f46-7fbcfb513213")
 	)
 	(label "LED_digital-out_8"
-		(at 123.19 134.62 0)
+		(at 118.11 134.62 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -969,7 +969,7 @@
 		(uuid "ba0bf30e-9aa8-48b7-827e-6edf8b31978d")
 	)
 	(label "LED_digital-out_7"
-		(at 123.19 132.08 0)
+		(at 118.11 132.08 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -1002,7 +1002,7 @@
 		(uuid "c6de0414-3677-4ea9-b488-3930297bb16a")
 	)
 	(label "LED_digital-out_5"
-		(at 123.19 127 0)
+		(at 118.11 127 0)
 		(fields_autoplaced yes)
 		(effects
 			(font
@ -1234,7 +1234,7 @@
 	)
 	(symbol
 		(lib_id "power:+3V3")
-		(at 133.35 111.76 0)
+		(at 128.27 111.76 0)
 		(unit 1)
 		(exclude_from_sim no)
 		(in_bom yes)
@ -1242,7 +1242,7 @@
 		(dnp no)
 		(uuid "3164481f-11e6-40e9-b0cd-a1da03401eb5")
 		(property "Reference" "#PWR053"
-			(at 133.35 115.57 0)
+			(at 128.27 115.57 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -1251,7 +1251,7 @@
 			)
 		)
 		(property "Value" "+3V3"
-			(at 133.35 107.95 0)
+			(at 128.27 107.95 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -1259,7 +1259,7 @@
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 		(property "Footprint" ""
-			(at 133.35 111.76 0)
+			(at 128.27 111.76 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -1268,7 +1268,7 @@
 			)
 		)
 		(property "Datasheet" ""
-			(at 133.35 111.76 0)
+			(at 128.27 111.76 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -1277,7 +1277,7 @@
 			)
 		)
 		(property "Description" "Power symbol creates a global label with name \"+3V3\""
-			(at 133.35 111.76 0)
+			(at 128.27 111.76 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2138,7 +2138,7 @@
 		)
 	)
 	(sheet
-		(at 142.24 110.49)
+		(at 137.16 110.49)
 		(size 12.7 26.67)
 		(stroke
 			(width 0.1524)
@ -2149,7 +2149,7 @@
 		)
 		(uuid "fa531529-e8ec-4675-8588-b82f9739f0d2")
 		(property "Sheetname" "8x-LED-common-anode_external1"
-			(at 125.984 139.7 0)
+			(at 120.904 139.7 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2158,7 +2158,7 @@
 			)
 		)
 		(property "Sheetfile" "8x-LED-common-anode_external.kicad_sch"
-			(at 128.016 140.716 0)
+			(at 122.936 140.716 0)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2167,7 +2167,7 @@
 			)
 		)
 		(pin "LED1" input
-			(at 142.24 116.84 180)
+			(at 137.16 116.84 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2177,7 +2177,7 @@
 			(uuid "6da8b6a2-b024-4247-a890-5bf51440f28c")
 		)
 		(pin "LED2" input
-			(at 142.24 119.38 180)
+			(at 137.16 119.38 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2187,7 +2187,7 @@
 			(uuid "2370100f-ad7c-4528-88fa-8bcc40fbaa2d")
 		)
 		(pin "LED3" input
-			(at 142.24 121.92 180)
+			(at 137.16 121.92 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2197,7 +2197,7 @@
 			(uuid "8d3abcd6-30b8-4aeb-b4cb-795661ef8610")
 		)
 		(pin "LED4" input
-			(at 142.24 124.46 180)
+			(at 137.16 124.46 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2207,7 +2207,7 @@
 			(uuid "ea3a86ef-fab8-419a-9e21-421f525afbb0")
 		)
 		(pin "LED5" input
-			(at 142.24 127 180)
+			(at 137.16 127 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2217,7 +2217,7 @@
 			(uuid "62da66b4-50cb-44c4-b2b0-e398ac79dfbc")
 		)
 		(pin "LED7" input
-			(at 142.24 132.08 180)
+			(at 137.16 132.08 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2227,7 +2227,7 @@
 			(uuid "c6c67edf-76ba-4fea-b2fe-9b50ed6ea7bd")
 		)
 		(pin "LED8" input
-			(at 142.24 134.62 180)
+			(at 137.16 134.62 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2237,7 +2237,7 @@
 			(uuid "ebaacf63-30fb-4b4a-847c-fb3a8175f1e2")
 		)
 		(pin "LED6" input
-			(at 142.24 129.54 180)
+			(at 137.16 129.54 180)
 			(effects
 				(font
 					(size 1.27 1.27)
@ -2247,7 +2247,7 @@
 			(uuid "b204f650-9a0c-4653-a989-79dd1f2f4420")
 		)
 		(pin "Anode" input
-			(at 142.24 113.03 180)
+			(at 137.16 113.03 180)
 			(effects
 				(font
 					(size 1.27 1.27)
--- a/pi-interface-board_v1.0/2x-LED-common-anode_external.kicad_sch
+++ b/pi-interface-board_v1.0/2x-LED-common-anode_external.kicad_sch
@ -224,17 +224,6 @@
 		)
 		(uuid "ff8e5d9b-ee46-4657-a2a4-813fdfa4d6f5")
 	)
-	(text "Note: Legacy hierachial sheet\nThis was outsourced to separate pcb project \n\"led-boards_v0.1\""
-		(exclude_from_sim no)
-		(at 40.132 46.228 0)
-		(effects
-			(font
-				(size 2 2)
-			)
-			(justify left)
-		)
-		(uuid "d216fd8a-355b-44d9-82c9-ccddba031600")
-	)
 	(hierarchical_label "LED1"
 		(shape input)
 		(at 48.26 66.04 180)
--- a/pi-interface-board_v1.0/8x-LED-common-anode_external.kicad_sch
+++ b/pi-interface-board_v1.0/8x-LED-common-anode_external.kicad_sch
@ -438,17 +438,6 @@
 		)
 		(uuid "f0f511aa-d379-4ed6-b9f1-8d300b8f7a64")
 	)
-	(text "Note: Legacy hierachial sheet\nThis was outsourced to separate pcb project \n\"led-boards_v0.1\""
-		(exclude_from_sim no)
-		(at 70.612 38.862 0)
-		(effects
-			(font
-				(size 2 2)
-			)
-			(justify left)
-		)
-		(uuid "0f424e6d-836c-4e21-bd19-f1b997455939")
-	)
 	(text "Connector for external LED board"
 		(exclude_from_sim no)
 		(at 75.692 48.768 0)
--- a/pi-interface-board_v1.0/8x-LED-common-cathode_external.kicad_sch
+++ b/pi-interface-board_v1.0/8x-LED-common-cathode_external.kicad_sch
@ -449,17 +449,6 @@
 		)
 		(uuid "3bb6e485-1926-4a9c-a057-6e133e2e6a90")
 	)
-	(text "Note: Legacy hierachial sheet\nThis was outsourced to separate pcb project \n\"led-boards_v0.1\""
-		(exclude_from_sim no)
-		(at 72.136 39.624 0)
-		(effects
-			(font
-				(size 2 2)
-			)
-			(justify left)
-		)
-		(uuid "e0c12a11-96f5-42ef-8716-5299f12502f0")
-	)
 	(hierarchical_label "LED8"
 		(shape input)
 		(at 83.82 76.2 180)
--- a/pi-interface-board_v1.0/export/layout_interface-board.pdf
+++ b/pi-interface-board_v1.0/export/layout_interface-board.pdf
--- a/pi-interface-board_v1.0/export/layout_interface-board.png
+++ b/pi-interface-board_v1.0/export/layout_interface-board.png
--- a/pi-interface-board_v1.0/export/schematic_interface-board.pdf
+++ b/pi-interface-board_v1.0/export/schematic_interface-board.pdf
--- a/pi-interface-board_v1.0/export/schematic_interface-board.svg
+++ b/pi-interface-board_v1.0/export/schematic_interface-board.svg
--- a/pi-interface-board_v1.0/fp-info-cache
+++ b/pi-interface-board_v1.0/fp-info-cache
--- a/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_pcb
+++ b/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_pcb
--- a/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_prl
+++ b/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_prl
@ -0,0 +1,80 @@
+{
+  "board": {
+    "active_layer": 31,
+    "active_layer_preset": "",
+    "auto_track_width": false,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "images": 0.6,
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.8500000238418579
+    },
+    "selection_filter": {
+      "dimensions": false,
+      "footprints": true,
+      "graphics": false,
+      "keepouts": false,
+      "lockedItems": false,
+      "otherItems": false,
+      "pads": false,
+      "text": false,
+      "tracks": false,
+      "vias": false,
+      "zones": false
+    },
+    "visible_items": [
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      13,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      34,
+      35,
+      36,
+      39,
+      40
+    ],
+    "visible_layers": "00290a0_00000001",
+    "zone_display_mode": 0
+  },
+  "git": {
+    "repo_password": "",
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "pi-interface-board_v1.0.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
--- a/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_pro
+++ b/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_pro
@ -37,9 +37,9 @@
        "other_text_thickness": 0.15,
        "other_text_upright": false,
        "pads": {
-          "drill": 1.8,
-          "height": 4.0,
-          "width": 4.0
+          "drill": 3.2,
+          "height": 3.2,
+          "width": 3.2
        },
        "silk_line_width": 0.1,
        "silk_text_italic": false,
--- a/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_sch
+++ b/pi-interface-board_v1.0/pi-interface-board_v1.0.kicad_sch
--- a/power-supply-board_v1.0/export/layout_power-supply.pdf
+++ b/power-supply-board_v1.0/export/layout_power-supply.pdf
--- a/power-supply-board_v1.0/export/layout_power-supply.png
+++ b/power-supply-board_v1.0/export/layout_power-supply.png
--- a/power-supply-board_v1.0/export/schematic_power-supply.pdf
+++ b/power-supply-board_v1.0/export/schematic_power-supply.pdf
--- a/power-supply-board_v1.0/export/schematic_power-supply.svg
+++ b/power-supply-board_v1.0/export/schematic_power-supply.svg
--- a/power-supply-board_v1.0/fp-info-cache
+++ b/power-supply-board_v1.0/fp-info-cache
--- a/power-supply-board_v1.0/power-supply-board_v1.0.kicad_pcb
+++ b/power-supply-board_v1.0/power-supply-board_v1.0.kicad_pcb
@ -4915,7 +4915,7 @@
 			)
 		)
 		(property "Value" "Fan"
-			(at 0.889962 7.9 -90)
+			(at 1.009962 6.24 180)
 			(layer "F.Fab")
 			(uuid "4d4df2c7-768a-440f-b24d-257e61a23141")
 			(effects
@ -5362,7 +5362,7 @@
 			)
 		)
 		(property "Value" "TP 5V"
-			(at -5.374 0.205 0)
+			(at -4.4196 0.1016 0)
 			(layer "F.Fab")
 			(uuid "a0c561cd-f07b-449b-bdd1-95638dd33795")
 			(effects
@ -6504,7 +6504,7 @@
 			)
 		)
 		(property "Value" "TP GND"
-			(at -5.674 -0.009 0)
+			(at 0 2.33 0)
 			(layer "F.Fab")
 			(uuid "f731c7b1-c8fe-4e90-ac69-cb625c88948a")
 			(effects
@ -7243,7 +7243,7 @@
 			)
 		)
 		(property "Value" "TP TEMP"
-			(at 9.528 -0.432 0)
+			(at 9.652 0.254 0)
 			(layer "F.Fab")
 			(uuid "ed3680c0-c9ba-4169-a084-10cfa6173f52")
 			(effects
@ -10050,7 +10050,7 @@
 			)
 		)
 		(property "Value" "TP BATT"
-			(at -6.84 0.174 0)
+			(at -5.2324 0.254 0)
 			(layer "F.Fab")
 			(uuid "5f62316e-74b6-43ed-bb58-25015d3a0537")
 			(effects
@ -10306,7 +10306,7 @@
 			)
 		)
 		(property "Value" "2200uf"
-			(at -0.952 2.579362 0)
+			(at -0.6096 2.579362 0)
 			(layer "F.Fab")
 			(uuid "1f7d7bb5-f802-471e-8ae7-4e1a80563b95")
 			(effects
@ -15778,7 +15778,7 @@
 			)
 		)
 		(property "Value" "low power supply"
-			(at 5.304 -17.46 -90)
+			(at 5 4.6 90)
 			(layer "F.Fab")
 			(uuid "1d2b2d9a-85f8-4869-9ad4-78ea70baaaa5")
 			(effects
@ -16269,7 +16269,7 @@
 			)
 		)
 		(property "Value" "24V 6A Supply"
-			(at -15.187 0.642 90)
+			(at -19.9136 1.2954 0)
 			(layer "F.Fab")
 			(uuid "b5278e3f-7951-4c56-8683-37a8cd2cebf3")
 			(effects
@ -20435,7 +20435,7 @@
 			)
 		)
 		(property "Value" "high power supply"
-			(at 5.165 -6.037 0)
+			(at 5.1206 -3.456 0)
 			(layer "F.Fab")
 			(uuid "d9ee3520-6870-4f5a-8c4c-ed027f9844b0")
 			(effects
@ -20835,7 +20835,7 @@
 			)
 		)
 		(property "Value" "high power supply"
-			(at 5.115 -21.832 0)
+			(at 5.5778 -3.5068 0)
 			(layer "F.Fab")
 			(uuid "7e1d6e39-ec62-4779-b99d-5474369325c0")
 			(effects
@ -24017,7 +24017,7 @@
 			)
 		)
 		(property "Value" "TS-NTC-103 10k"
-			(at 1.215 -11.968 0)
+			(at 2.1444 -11.9634 0)
 			(layer "F.Fab")
 			(uuid "b5f74fe3-90ad-4c5b-8181-6c82cc7709ee")
 			(effects
@ -24808,7 +24808,7 @@
 			)
 		)
 		(property "Value" "TP fan"
-			(at 8.907 -0.499 0)
+			(at 8.636 0 0)
 			(layer "F.Fab")
 			(uuid "66939a73-4b2f-47c9-b473-948dee2ca964")
 			(effects
@ -31280,7 +31280,7 @@
 			)
 		)
 		(property "Value" "supply nopop"
-			(at 1.571038 11.0415 90)
+			(at 1.761438 15.3135 0)
 			(unlocked yes)
 			(layer "F.Fab")
 			(uuid "e46b6e15-9716-430d-b064-c043b6a581e4")
@ -33614,7 +33614,7 @@
 			)
 		)
 		(property "Value" "TS-NTC-103 10k"
-			(at 1.234 -12.068 180)
+			(at 2.6162 -11.9126 180)
 			(layer "F.Fab")
 			(uuid "e646e6c0-b3cf-4c3c-86ed-e6c7826a5762")
 			(effects
@ -38546,7 +38546,7 @@
 			)
 		)
 		(property "Value" "5A polyfuse"
-			(at 6.3952 -0.3016 0)
+			(at 5.6896 -0.5588 0)
 			(layer "F.Fab")
 			(uuid "3d2a814d-7d8a-4c99-959b-f1990d4d82c3")
 			(effects
@ -43261,32 +43261,6 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "5V/12V Drain\n"
-		(at 183.9 109.025 90)
-		(layer "B.Cu")
-		(uuid "822cfa54-4e7d-4926-a61c-a59f69039109")
-		(effects
-			(font
-				(size 1 1)
-				(thickness 0.25)
-				(bold yes)
-			)
-			(justify left bottom)
-		)
-	)
-	(gr_text "12V, 5V, 3V3, GND"
-		(at 126.625 29.55 0)
-		(layer "Cmts.User")
-		(uuid "0768b060-fa5a-44d8-8fb6-510f71d7a46c")
-		(effects
-			(font
-				(size 1 1)
-				(thickness 0.25)
-				(bold yes)
-			)
-			(justify left bottom)
-		)
-	)
 	(gr_text "Via"
 		(at 195.707 48.006 0)
 		(layer "Cmts.User")
@ -43299,32 +43273,6 @@
 			(justify left bottom)
 		)
 	)
-	(gr_text "GND, 3V3, -5V, 5V, GND"
-		(at 184.2 53.2 90)
-		(layer "Cmts.User")
-		(uuid "ac167a33-155f-491c-855c-7a657d21e44e")
-		(effects
-			(font
-				(size 1 1)
-				(thickness 0.25)
-				(bold yes)
-			)
-			(justify left bottom)
-		)
-	)
-	(gr_text "FIXME: Power supply barrel connector wrong polarity -> reroute"
-		(at 94.91 137.52 0)
-		(layer "Cmts.User")
-		(uuid "d06dcb3d-61f7-46b5-ab9d-a35c29a9f224")
-		(effects
-			(font
-				(size 1.5 1.5)
-				(thickness 0.3)
-				(bold yes)
-			)
-			(justify left bottom)
-		)
-	)
 	(gr_text "Solder on Top side as well"
 		(at 195.4022 53.1368 0)
 		(layer "Cmts.User")
--- a/power-supply-board_v1.0/power-supply-board_v1.0.kicad_prl
+++ b/power-supply-board_v1.0/power-supply-board_v1.0.kicad_prl
@ -0,0 +1,82 @@
+{
+  "board": {
+    "active_layer": 31,
+    "active_layer_preset": "",
+    "auto_track_width": false,
+    "hidden_netclasses": [],
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "images": 0.5,
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.4000000059604645
+    },
+    "selection_filter": {
+      "dimensions": false,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": false,
+      "lockedItems": false,
+      "otherItems": false,
+      "pads": false,
+      "text": true,
+      "tracks": true,
+      "vias": false,
+      "zones": false
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      13,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36,
+      39,
+      40
+    ],
+    "visible_layers": "48352a0_80000001",
+    "zone_display_mode": 0
+  },
+  "git": {
+    "repo_password": "",
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
+  "meta": {
+    "filename": "power-supply-board_v1.0.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
--- a/power-supply-board_v1.0/power-supply-board_v1.0.kicad_sch
+++ b/power-supply-board_v1.0/power-supply-board_v1.0.kicad_sch
@ -4,13 +4,6 @@
 	(generator_version "8.0")
 	(uuid "af4d11a6-73e1-4c39-a25e-5fe7dfa07237")
 	(paper "A3")
-	(title_block
-		(title "power-supply-board")
-		(date "2024-12-20")
-		(rev "V1.0")
-		(comment 2 "Supplies 3V3, 5V -5V, 12V, Filtered 24V")
-		(comment 3 "Supply board for rpi-interface board")
-	)
 	(lib_symbols
 		(symbol "Amplifier_Operational:MCP6002-xP"
 			(pin_names
@ -14511,7 +14504,7 @@
 		)
 		(uuid "c5813cfa-ba8c-4a80-a9d4-664143707d07")
 	)
-	(text "2 NTC sensors spread in housing\ne.g. RPI Cpu and 5V Regulator"
+	(text "2 NTC sensors spread in housing"
 		(exclude_from_sim no)
 		(at 208.534 59.436 0)
 		(effects
@ -14682,7 +14675,7 @@
 		)
 		(uuid "f9ba8cda-125a-469c-9294-dbb980b4df9f")
 	)
-	(text "TODO next version:\n  - add LED for each voltage in housing (external using connector)?\n  - FIXME: Verify power supply barrel connector polarity (wrong in V1.0)\n\nChangelog / Fixed since V1.0:\n  - TVS polarity\n  - Fuse, Diode footprint\n  - add GND Testpoint\n  - led gnd via\n  - 5x low power connector\n\n"
+	(text "TODO next version:\n  - add LED for each voltage in housing (external using connector)?\n\nFixed since V1.0:\n  - TVS polarity\n  - Fuse, Diode footprint\n  - add GND Testpoint\n  - led gnd via\n  - 5x low power connector\n\n"
 		(exclude_from_sim no)
 		(at 114.3 34.544 0)
 		(effects
--- a/rpi-scripts/examples/pass_through_inputs_to_outputs.py
+++ b/rpi-scripts/examples/pass_through_inputs_to_outputs.py
@ -1,64 +0,0 @@
-import os
-import sys
-import time
-import RPi.GPIO as GPIO
-
-
-
-# Import pin assignments and custom libraries
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_pins import GPIO_DIGITAL_INPUTS  # Input GPIO mapping
-from interface_board_pins import (  # Shift register pin assignment
-    GPIO_SHIFT_REG_DATA,
-    GPIO_SHIFT_REG_LATCH,
-    GPIO_SHIFT_REG_CLOCK,
-)
-from interface_board_libs.shift_register import ShiftRegister  # Custom shift register class
-
-
-
-# Initialize GPIO for digital inputs
-GPIO.setmode(GPIO.BCM)
-for pin in GPIO_DIGITAL_INPUTS.values():
-    print(f"Configuring GPIO pin {pin} as input")
-    GPIO.setup(pin, GPIO.IN)
-
-
-
-# Initialize shift register
-sr = ShiftRegister(GPIO_SHIFT_REG_DATA, GPIO_SHIFT_REG_LATCH, GPIO_SHIFT_REG_CLOCK)
-
-
-
-# Main loop: Read inputs and write to shift register
-print("\nStarting passthrough mode: Digital inputs → Shift register outputs")
-try:
-    while True:
-        shift_register_value = 0  # Byte to be written to the shift register
-        print("\nReading inputs and updating shift register...")
-
-        for i, (label, pin) in enumerate(GPIO_DIGITAL_INPUTS.items()):
-            state = GPIO.input(pin)  # Read GPIO state
-            print(f"Input {label} (GPIO {pin}): {'HIGH' if state else 'LOW'}")
-
-            # Set corresponding bit in shift register byte
-            if state:
-                shift_register_value |= (1 << i)  # Set bit at position `i`
-            else:
-                shift_register_value &= ~(1 << i)  # Clear bit at position `i`
-
-        # Write the final byte to the shift register
-        sr.write_byte(shift_register_value)
-        print(f"Shift Register Output: {format(shift_register_value, '08b')[::-1]}") # Print binary representation (mirrored, lsb first = terminal order)
-
-        time.sleep(0.3)  # Small delay to prevent excessive polling
-
-except KeyboardInterrupt:
-    print("\nExiting...")
-
-finally:
-    sr.clear()  # Clear shift register before exiting
-    print("Shift register cleared.")
-    GPIO.cleanup()  # Cleanup GPIO settings
-
--- a/rpi-scripts/examples/read_analog_inputs.py
+++ b/rpi-scripts/examples/read_analog_inputs.py
@ -1,79 +0,0 @@
-# Include external libraries
-import os
-import sys
-import time
-
-
-# Include custom files
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_libs.adc_mcp3208 import MCP3208 # custom driver for ADC-IC
-from interface_board_pins import ( 
-    # mapping of ADC channels to terminals + max value:
-    ADC_TERMINALS,
-    # mapping of ADC channels to terminals:
-    ADC_CHANNEL_T0__0_TO_3V3,
-    ADC_CHANNEL_T1__0_TO_3V3,
-    ADC_CHANNEL_T2__0_TO_5V,
-    ADC_CHANNEL_T3__0_TO_5V,
-    ADC_CHANNEL_T4__0_TO_12V,
-    ADC_CHANNEL_T5__0_TO_24V,
-    ADC_CHANNEL_T6__0_TO_20MA,
-    ADC_CHANNEL_T7__0_TO_20MA,
-) # mapping of ADC channels to terminals
-
-
-# create ADC instance 
-adc = MCP3208()
-
-
-
-# local helper function to scale the adc value to an actual voltage
-def adc2value(adc_value, max_value):
-    max_adc = 4095
-    return adc_value * max_value / max_adc
-
-
-
-
-while True:
-        print("-" * 40)  
-
-        # Read all available channels in a loop according to terminal order / map
-        values = []
-        for terminal, config in ADC_TERMINALS.items():
-            adc_channel = config["adc_channel"]
-            max_value = config["max_value"]
-            value = adc.read(adc_channel)
-            print(f"T{terminal}: ADC={value:04d}  => U_ADC = {adc2value(value, max_value):5.3f}V")
-        
-
-        # Read channels one by one using defined constants (more intuitive)
-        print("-" * 40)  
-        value = adc.read(ADC_CHANNEL_T0__0_TO_3V3)  
-        print(f"Terminal 0 (0 to 3.3V): ADC={value:04d} => Terminal={adc2value(value, 3.3):4.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T1__0_TO_3V3)  
-        print(f"Terminal 1 (0 to 3.3V): ADC={value:04d} => Terminal={adc2value(value, 3.3):4.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T2__0_TO_5V)  
-        print(f"Terminal 2 (0 to 5V):   ADC={value:04d} => Terminal={adc2value(value, 5):4.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T3__0_TO_5V)  
-        print(f"Terminal 3 (0 to 5V):   ADC={value:04d} => Terminal={adc2value(value, 5):4.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T4__0_TO_12V)  
-        print(f"Terminal 4 (0 to 12V):  ADC={value:04d} => Terminal={adc2value(value, 12):05.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T5__0_TO_24V)  
-        print(f"Terminal 5 (0 to 24V):  ADC={value:04d} => Terminal={adc2value(value, 24):05.2f}V")  
-
-        value = adc.read(ADC_CHANNEL_T6__0_TO_20MA)  
-        print(f"Terminal 6 (0 to 20mA): ADC={value:04d} => Terminal={adc2value(value, 20):05.2f}mA")  
-
-        value = adc.read(ADC_CHANNEL_T7__0_TO_20MA)  
-        print(f"Terminal 7 (0 to 20mA): ADC={value:04d} => Terminal={adc2value(value, 20):05.2f}mA")  
-
-        print("-" * 40)  
-        time.sleep(1)  # Delay before next read cycle  
-
--- a/rpi-scripts/examples/read_digital_inputs.py
+++ b/rpi-scripts/examples/read_digital_inputs.py
@ -1,37 +0,0 @@
-import os
-import sys
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-# Include the common pin assignment (from parent folder)
-from interface_board_pins import GPIO_DIGITAL_INPUTS # map of which GPIO pins are associated with which input terminal (1-8)
-
-import RPi.GPIO as GPIO
-import time
-
-
-
-# Initialize GPIO
-GPIO.setmode(GPIO.BCM)
-for pin in GPIO_DIGITAL_INPUTS.values():
-    print(f"configuring pin {pin} as input")
-    GPIO.setup(pin, GPIO.IN)
-
-
-
-# Repeatedly read GPIOs
-print("Reading digital inputs:")
-try:
-    while True:
-        print("reading all gpio pins...")
-        for label, pin in GPIO_DIGITAL_INPUTS.items():
-            print(f"reading pin {pin}")
-            state = GPIO.input(pin)
-            print(f"Input {label} (GPIO {pin}): {'HIGH' if state else 'LOW'}")
-        print("-" * 40)
-        time.sleep(0.5)
-
-except KeyboardInterrupt:
-    print("Exiting...")
-
-finally:
-    GPIO.cleanup()
--- a/rpi-scripts/examples/write_digital_outputs_shift_reg.py
+++ b/rpi-scripts/examples/write_digital_outputs_shift_reg.py
@ -1,82 +0,0 @@
-# Include external libraries
-import os
-import sys
-import RPi.GPIO as GPIO
-from time import sleep
-
-
-# Include custom files
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_libs.shift_register import ShiftRegister # custom shift register class
-from interface_board_pins import ( # pin / channel assignment
-    GPIO_SHIFT_REG_DATA,
-    GPIO_SHIFT_REG_LATCH,
-    GPIO_SHIFT_REG_CLOCK,
-    SHIFT_REG_CHANNEL_BUZZER,
-    SHIFT_REG_CHANNEL_RELAY1,
-    SHIFT_REG_CHANNEL_RELAY2,
-)
-
-
-
-# Config
-COUNT_UP_TEST_ENABLED = False
-DELAY_COUNT_UP = 0.008
-DELAY_TOGGLE = 0.3
-
-
-# Initialize the shift register
-sr = ShiftRegister(GPIO_SHIFT_REG_DATA, GPIO_SHIFT_REG_LATCH, GPIO_SHIFT_REG_CLOCK)
-
-try:
-    print("Writing to shift register...")
-
-
-    # repeatedly write to shift register
-    while True:
-        # Cycle through all combinations of pin states (write entire byte)
-        if COUNT_UP_TEST_ENABLED:
-            print("Writing all byte values (0-255)...")
-            for value in range(256):
-                sr.write_byte(value)  # Write the current value
-                print(f"Output: {'{0:08b}'.format(value)}")  # Print binary representation
-                sleep(DELAY_COUNT_UP)  # Delay between each byte
-
-            sleep(0.5)
-            sr.clear()  # Clear the shift register
-
-
-        # Turn each pin on and off one by one
-        print("\nToggling each pin one by one...")
-        # channels 0-2 are connected to buzzer and relays:
-        print(f"Num {SHIFT_REG_CHANNEL_BUZZER}: Toggling buzzer...") # channel 0
-        sr.set_pin(SHIFT_REG_CHANNEL_BUZZER, True)  # Turn buzzer ON
-        sleep(DELAY_TOGGLE)
-        sr.set_pin(SHIFT_REG_CHANNEL_BUZZER, False)  # Turn buzzer OFF
-
-        print(f"Num {SHIFT_REG_CHANNEL_RELAY1}: Toggling Relay 1...") # channel 1
-        sr.toggle_pin(SHIFT_REG_CHANNEL_RELAY1)
-        sleep(DELAY_TOGGLE)
-        sr.toggle_pin(SHIFT_REG_CHANNEL_RELAY1)
-
-        print(f"Num {SHIFT_REG_CHANNEL_RELAY2}: Toggling Relay 2...") # channel 2
-        sr.set_pin(SHIFT_REG_CHANNEL_RELAY2, True)  # Turn relay ON
-        sleep(DELAY_TOGGLE)
-        sr.set_pin(SHIFT_REG_CHANNEL_RELAY2, False)  # Turn relay OFF
-
-
-        # channels 3-7 are connected to terminals only (no dedicated device on pcb):
-        for pin in range(3,8): # 3-7 are connected to terminal only
-            print(f"Num: {pin}: Toggling Terminal")
-            sr.set_pin(pin, True)  # Set the pin HIGH
-            sleep(DELAY_TOGGLE)
-            #print(f"Setting pin {pin} LOW.")
-            sr.set_pin(pin, False)  # Set the pin LOW
-            #sleep(0.5)
-
-
-finally:
-    sr.clear()  # Clear the shift register
-    print("Shift register cleared.")
-    GPIO.cleanup()  # Clean up GPIO settings
--- a/rpi-scripts/examples/write_pwm_outputs.py
+++ b/rpi-scripts/examples/write_pwm_outputs.py
@ -1,76 +0,0 @@
-# Include external libraries
-import os
-import sys
-import RPi.GPIO as GPIO
-from time import sleep
-
-
-# Include custom files
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_pins import ( # pin / channel assignment
-    GPIO_PWM1,  # RPI_PWM0
-    GPIO_PWM2  # RPI_PWM0 too
-)
-
-
-
-# Config
-BLINK_ONLY = False
-
-
-
-# PWM Settings
-FREQ = 1000  # PWM frequency in Hz
-STEP = 2     # Step size for fading
-DELAY = 0.03  # Delay between steps
-
-try:
-    print("Configuring PWM pins...")
-    GPIO.setmode(GPIO.BCM)
-    GPIO.setup(GPIO_PWM1, GPIO.OUT)
-    GPIO.setup(GPIO_PWM2, GPIO.OUT)
-
-
-    if BLINK_ONLY:
-        while True:
-            print(f"PWM1 ON (GPIO {GPIO_PWM1})")
-            GPIO.output(GPIO_PWM1, 1)
-            sleep(2)
-            print("PWM1 OFF")
-            GPIO.output(GPIO_PWM1, 0)
-            print(f"PWM2 ON (GPIO {GPIO_PWM2})")
-            GPIO.output(GPIO_PWM2, 1)
-            sleep(2)
-            print("PWM2 OFF")
-            GPIO.output(GPIO_PWM2, 0)
-
-
-    # Initialize PWM on both pins
-    pwm1 = GPIO.PWM(GPIO_PWM1, FREQ)
-    pwm2 = GPIO.PWM(GPIO_PWM2, FREQ)
-    
-    pwm1.start(0)  # Start with 0% duty cycle
-    pwm2.start(100)  # Start with 100% duty cycle
-
-    print("Starting PWM fade effect...")
-    while True:
-        # Fade up PWM1 and fade down PWM2
-        for duty in range(0, 101, STEP):  # Duty cycle from 0% to 100%
-            pwm1.ChangeDutyCycle(duty)
-            pwm2.ChangeDutyCycle(100 - duty)  # Opposite fade
-            print(f"PWM1: {duty}%  |  PWM2: {100 - duty}%")
-            sleep(DELAY)
-
-        # Fade down PWM1 and fade up PWM2
-        for duty in range(100, -1, -STEP):  # Duty cycle from 100% to 0%
-            pwm1.ChangeDutyCycle(duty)
-            pwm2.ChangeDutyCycle(100 - duty)  # Opposite fade
-            print(f"PWM1: {duty}%  |  PWM2: {100 - duty}%")
-            sleep(DELAY)
-
-finally:
-    print("Exiting, stopping PWM and cleaning up...")
-    pwm1.stop()
-    pwm2.stop()
-    GPIO.cleanup()  # Clean up GPIO settings
--- a/rpi-scripts/gui/gui-start.service
+++ b/rpi-scripts/gui/gui-start.service
@ -1,27 +0,0 @@
-# systemd service file for auto starting the python gui 
-# at the correct time after startup (when window manager finished starting)
-
-
-# Usage:
-#  - Install: `sudo cp rpi-scripts/gui/gui-start.service /etc/systemd/system/`
-#  - Enable autostart:  `sudo systemctl enable gui-start.service`
-#  - Disable autostart: `sudo systemctl disable gui-start.service`
-
-[Unit]
-Description=Start Python GUI for IO-control and monitoring after startup
-# note: when using After=graphical.target: it only starts after successful network connection...
-After=display-manager.service
-Wants=display-manager.service
-
-[Service]
-Environment=DISPLAY=:0
-
-# note: some delay is needed for DISPLAY :0 to be available
-ExecStart=/bin/bash -c "/bin/sleep 6 && /usr/bin/python3 /home/pi/git/rpi-interface-board/rpi-scripts/gui/main.py"
-WorkingDirectory=/home/pi/git/rpi-interface-board/rpi-scripts/gui
-User=pi
-Group=pi
-Restart=no
-
-[Install]
-WantedBy=default.target
--- a/rpi-scripts/gui/main.py
+++ b/rpi-scripts/gui/main.py
@ -1,90 +0,0 @@
-import os
-import sys
-import time
-import tkinter as tk
-from tkinter import ttk
-from tkinter import messagebox
-import RPi.GPIO as GPIO
-
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_libs.adc_mcp3208 import MCP3208
-from interface_board_libs.shift_register import ShiftRegister
-from interface_board_pins import *  # Import pin assignments
-from tab_control import create_control_tab
-from tab_control import set_updating_enabled as tab_control__set_updating_enabled
-from tab_adc_plot import create_adc_plot_tab
-from tab_adc_plot import set_updating_enabled as tab_analog_plot__set_updating_enabled
-from tab_digital_plot import create_digital_plot_tab
-from tab_digital_plot import set_updating_enabled as tab_digital_plot__set_updating_enabled
-from tab_exit import create_exit_tab
-
-
-# Initialize ADC & Shift Register
-adc = MCP3208()
-shift_reg = ShiftRegister(GPIO_SHIFT_REG_DATA, GPIO_SHIFT_REG_LATCH, GPIO_SHIFT_REG_CLOCK)
-
-
-# GPIO Setup
-GPIO.setmode(GPIO.BCM)
-for pin in GPIO_DIGITAL_INPUTS.values():
-    GPIO.setup(pin, GPIO.IN)
-GPIO.setup(GPIO_PWM1, GPIO.OUT)
-GPIO.setup(GPIO_PWM2, GPIO.OUT)
-pwm1 = GPIO.PWM(GPIO_PWM1, 1000)
-pwm2 = GPIO.PWM(GPIO_PWM2, 1000)
-pwm1.start(0)
-pwm2.start(0)
-
-
-# Tkinter GUI
-root = tk.Tk()
-root.title("Raspberry Pi Interface Board")
-root.attributes('-fullscreen', True)
-root.configure(bg="black")
-
-
-# Tabbed Interface
-notebook = ttk.Notebook(root)
-notebook.pack(expand=True, fill="both")
-
-
-# Track active tab
-def on_tab_change(event):
-    active_tab = event.widget.tab(event.widget.index("current"), "text")
-    print (f"INFO: switched to tab {active_tab}")
-    match active_tab:
-        case "ADC Plot":
-            tab_control__set_updating_enabled(False)
-            tab_analog_plot__set_updating_enabled(True)
-            tab_digital_plot__set_updating_enabled(False)
-        case "Digital Inputs":
-            tab_control__set_updating_enabled(False)
-            tab_analog_plot__set_updating_enabled(False)
-            tab_digital_plot__set_updating_enabled(True)
-        case "Controls":
-            tab_control__set_updating_enabled(True)
-            tab_analog_plot__set_updating_enabled(False)
-            tab_digital_plot__set_updating_enabled(False)
-        case "EXIT":
-            pass
-        case _:
-            print(f"unhandled change to tab {active_tab}")
-
-notebook.bind("<<NotebookTabChanged>>", on_tab_change)
-
-
-# Add tabs
-create_control_tab(notebook, adc, shift_reg, pwm1, pwm2)
-create_adc_plot_tab(notebook, adc)
-create_digital_plot_tab(notebook)
-create_exit_tab(notebook, root, pwm1, pwm2)
-
-
-# Run GUI
-try:
-    root.mainloop()
-
-except KeyboardInterrupt:
-    print('Keyboard interrupt -> exiting')
-    exit()
--- a/rpi-scripts/gui/tab_adc_plot.py
+++ b/rpi-scripts/gui/tab_adc_plot.py
@ -1,86 +0,0 @@
-import sys
-import os
-import tkinter as tk
-from tkinter import ttk
-from matplotlib.figure import Figure
-from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
-import time
-
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_pins import ADC_TERMINALS  # Import pin assignments
-
-
-# CONFIG
-ADC_PLOT_UPDATE_DELAY_MS = 50  # note: delay is additional to time it takes to update the chart
-TAB_NOT_ACTIVE_CHECK_INTERVAL_MS = 2000
-MAX_X_HISTORY_VALUES = 150
-AUTO_SCALE_ENABLED = True
-DEBUG = False
-
-
-# Variables
-updating_enabled = False
-adc_channels = list(range(8))
-data = {ch: [0] * MAX_X_HISTORY_VALUES for ch in adc_channels}  # Preallocate lists
-time_data = list(range(-MAX_X_HISTORY_VALUES, 0))  # Simulated time axis
-
-
-def create_adc_plot_tab(notebook, adc):
-    frame = ttk.Frame(notebook)
-    notebook.add(frame, text="ADC Plot")
-
-    figure = Figure(figsize=(8, 5), dpi=100)
-    ax = figure.add_subplot(1, 1, 1)
-
-    ax.set_title("ADC Inputs")  # Set title
-    ax.set_xlabel("Time (s)")  # X-axis label
-    ax.set_ylabel("Voltage / Current (V / mA)")  # Y-axis label
-
-    ax.set_xlim(-MAX_X_HISTORY_VALUES, 0)  # Keep time axis fixed
-    canvas = FigureCanvasTkAgg(figure, master=frame)
-    canvas.get_tk_widget().pack(fill=tk.BOTH, expand=True)
-
-    # Initialize lines for fast updates
-    lines = {}
-    for terminal, config in ADC_TERMINALS.items():
-        label = f"T{terminal} ({config['max_value']} {config['unit']})"  # Format: T1 (3.3V)
-        lines[terminal] = ax.plot(time_data, data[terminal], label=label)[0]
-
-    ax.legend()  # Show legend
-
-    def update_plot():
-        if not updating_enabled:
-            frame.after(TAB_NOT_ACTIVE_CHECK_INTERVAL_MS, update_plot)
-            return
-
-        for terminal, config in ADC_TERMINALS.items():
-            adc_channel = config["adc_channel"]
-            max_value = config["max_value"]
-            # Shift existing data left and
-            # read new data + scale based on the correct max voltage
-            data[terminal].pop(0)
-            data[terminal].append(round(adc.read(adc_channel) * max_value / 4095, 2))
-
-        # Recalculate limits (autoscale)
-        if AUTO_SCALE_ENABLED:
-            ax.set_ylim(bottom=0)  # Lower limit always 0
-            ax.autoscale(enable=True, axis='y', tight=False)  # Enable autoscale for upper limit
-            ax.relim()  # Recalculate limits
-            ax.autoscale_view(scalex=False, scaley=True)  # Autoscale only y-axis
-        else:
-            ax.set_ylim(0, 24)  # Fixed range if autoscale is disabled
-
-        for terminal in ADC_TERMINALS:
-            lines[terminal].set_ydata(data[terminal])
-
-        canvas.draw_idle()  # Efficient redraw
-        frame.after(ADC_PLOT_UPDATE_DELAY_MS, update_plot)
-
-    update_plot()
-
-
-def set_updating_enabled(is_active):
-    global updating_enabled
-    updating_enabled = is_active
-    if DEBUG: print(f"adc_plot tab: set updating_enabled to {updating_enabled}")
--- a/rpi-scripts/gui/tab_control.py
+++ b/rpi-scripts/gui/tab_control.py
@ -1,141 +0,0 @@
-import sys
-import os
-import tkinter as tk
-from tkinter import ttk
-import RPi.GPIO as GPIO
-
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_pins import *  # Import pin assignments
-
-
-# CONFIG
-ADC_VALUES_UPDATE_INTERVAL_MS = 500
-DIGITAL_INPUTS_UPDATE_INTERVAL_MS = 200
-TAB_NOT_ACTIVE_CHECK_INTERVAL_MS = 2000
-DEBUG = False
-
-
-# Variables
-updating_enabled = False
-
-
-def create_control_tab(notebook, adc, shift_reg, pwm1, pwm2):
-    frame = ttk.Frame(notebook)
-    notebook.add(frame, text="Controls")
-
-    digital_input_states = [tk.StringVar(value="LOW") for _ in range(8)]
-    digital_output_states = [tk.BooleanVar(value=False) for _ in range(8)]
-    adc_values = [tk.StringVar(value=" --- ") for _ in range(8)]
-    pwm_values = [tk.IntVar(value=0), tk.IntVar(value=0)]
-    output_buttons = {}  # Store button references to change colors
-
-
-    def update_inputs():
-        if not updating_enabled:
-            frame.after(TAB_NOT_ACTIVE_CHECK_INTERVAL_MS, update_inputs)
-            return
-        for i, pin in enumerate(GPIO_DIGITAL_INPUTS.values()):
-            digital_input_states[i].set("HIGH" if GPIO.input(pin) else "LOW")
-        frame.after(DIGITAL_INPUTS_UPDATE_INTERVAL_MS, update_inputs)
-
-
-    def update_adc():
-        if not updating_enabled:
-            frame.after(TAB_NOT_ACTIVE_CHECK_INTERVAL_MS, update_adc)
-            return
-
-        for terminal, config in ADC_TERMINALS.items():
-            adc_channel = config["adc_channel"]
-            max_value = config["max_value"]
-            unit = config["unit"]
-
-            # Read ADC value and scale to the correct voltage
-            value = adc.read(adc_channel)
-            adc_values[terminal].set(f"{value * max_value / 4095:4.2f} {unit}")
-
-        frame.after(ADC_VALUES_UPDATE_INTERVAL_MS, update_adc)
-
-
-    def toggle_output(index):
-        """ Toggle shift register output and update button color. """
-        new_state = not digital_output_states[index].get()
-        digital_output_states[index].set(new_state)
-        shift_reg.set_pin(index, new_state)
-
-        if index in output_buttons:
-            for btn in output_buttons[index]:
-                btn.configure(bg="green" if new_state else "red", activebackground="green" if new_state else "red")
-
-
-    style = ttk.Style()
-    style.configure("TScale", thickness=60)
-    style.configure("TButton", font=("Arial", 18), padding=5)
-
-    control_frame = ttk.Frame(frame, padding=40)
-    control_frame.grid(row=0, column=0, sticky="nsew")
-
-    frame.grid_rowconfigure(0, weight=1)
-    frame.grid_rowconfigure(1, weight=0)
-    frame.grid_columnconfigure(0, weight=1)
-
-    for i in range(8):
-        ttk.Label(control_frame, text=f"ADC-{i}: ", font=("Arial", 18)).grid(row=i, column=0, sticky="e")
-        ttk.Label(control_frame, textvariable=adc_values[i], width=10, font=("Arial", 18)).grid(row=i, column=1, sticky="w")
-        ttk.Label(control_frame, text=f"IN-{i}:", font=("Arial", 18)).grid(row=i, column=2, sticky="e", padx=20)
-        ttk.Label(control_frame, textvariable=digital_input_states[i], width=6, font=("Arial", 18)).grid(row=i, column=3, sticky="w")
-
-        btn = tk.Button(control_frame, text=f"OUT-{i}", font=("Arial", 16), width=10, bg="red", activebackground="red", command=lambda i=i: toggle_output(i))
-        btn.grid(row=i, column=4, sticky="w", padx=20)
-
-        output_buttons.setdefault(i, []).append(btn)
-
-        if i == 0:
-            buzzer_btn = tk.Button(control_frame, text="BUZZER", font=("Arial", 16), width=10, bg="red", activebackground="red", command=lambda: toggle_output(0))
-            buzzer_btn.grid(row=i, column=5, padx=20)
-            output_buttons[0].append(buzzer_btn)
-
-        if i == 1:
-            relay2_btn = tk.Button(control_frame, text="RELAY2", font=("Arial", 16), width=10, bg="red", activebackground="red", command=lambda: toggle_output(1))
-            relay2_btn.grid(row=i, column=5, padx=20)
-            output_buttons[1].append(relay2_btn)
-
-        if i == 2:
-            relay1_btn = tk.Button(control_frame, text="RELAY1", font=("Arial", 16), width=10, bg="red", activebackground="red", command=lambda: toggle_output(2))
-            relay1_btn.grid(row=i, column=5, padx=20)
-            output_buttons[2].append(relay1_btn)
-
-    pwm_frame = ttk.Frame(frame, padding=20)
-    pwm_frame.grid(row=1, column=0, sticky="ew")
-
-    pwm_frame.columnconfigure(0, weight=0)
-    pwm_frame.columnconfigure(1, weight=1)
-    pwm_frame.columnconfigure(2, weight=0)
-    
-    pwm1_label = ttk.Label(pwm_frame, text="PWM-1:", font=("Arial", 18))
-    pwm1_label.grid(row=0, column=0, padx=20, sticky="e")
-    
-    pwm1_slider = ttk.Scale(
-        pwm_frame, from_=0, to=100, orient="horizontal", length=400, 
-        variable=pwm_values[0], command=lambda val: pwm1.ChangeDutyCycle(int(float(val)))
-    )
-    pwm1_slider.grid(row=0, column=1, columnspan=2, sticky="we", padx=10)
-    
-    pwm2_label = ttk.Label(pwm_frame, text="PWM-2:", font=("Arial", 18))
-    pwm2_label.grid(row=1, column=0, padx=20, sticky="e")
-    
-    pwm2_slider = ttk.Scale(
-        pwm_frame, from_=0, to=100, orient="horizontal", length=400, 
-        variable=pwm_values[1], command=lambda val: pwm2.ChangeDutyCycle(int(float(val)))
-    )
-    pwm2_slider.grid(row=1, column=1, columnspan=2, sticky="we", padx=10)
-
-    update_inputs()
-    update_adc()
-
-
-
-def set_updating_enabled(is_active):
-    global updating_enabled
-    updating_enabled = is_active
-    if DEBUG: print(f"control tab: set updating_enabled to {updating_enabled}")
--- a/rpi-scripts/gui/tab_digital_plot.py
+++ b/rpi-scripts/gui/tab_digital_plot.py
@ -1,78 +0,0 @@
-import sys
-import os
-import threading
-import tkinter as tk
-from tkinter import ttk
-import RPi.GPIO as GPIO
-from matplotlib.figure import Figure
-from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
-import time
-# Add the parent directory to the module search path
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
-from interface_board_pins import *  # Import pin assignments
-
-
-# CONFIG
-DIGITAL_PLOT_UPDATE_DELAY_MS = 50  # note: delay is additional to time it takes to update the chart
-TAB_NOT_ACTIVE_CHECK_INTERVAL_MS = 2000   # Check inactive tabs less frequently
-MAX_X_HISTORY_VALUES = 100         # Keep last 100 values for scrolling
-DEBUG = False
-
-
-# Variables
-updating_enabled = False  # Track if the tab is active
-input_channels = list(range(8))
-data = {ch: [0] * MAX_X_HISTORY_VALUES for ch in input_channels}  # Preallocate data
-time_data = list(range(-MAX_X_HISTORY_VALUES, 0))  # Simulated time axis
-
-
-def create_digital_plot_tab(notebook):
-    frame = ttk.Frame(notebook)
-    notebook.add(frame, text="Digital Inputs")
-
-    figure = Figure(figsize=(8, 5), dpi=100)
-    ax = figure.add_subplot(1, 1, 1)
-
-    ax.set_title("Digital Inputs")  # Set title
-    ax.set_xlabel("Time (s)")  # X-axis label
-    ax.set_ylabel("State (1=HIGH / 0=LOW)")  # Y-axis label
-
-    ax.set_ylim(-0.2, 1.2)
-    ax.set_xlim(-MAX_X_HISTORY_VALUES, 0)  # Keep time axis fixed
-    canvas = FigureCanvasTkAgg(figure, master=frame)
-    canvas.get_tk_widget().pack(fill=tk.BOTH, expand=True)
-
-    # Initialize lines for fast updates
-    lines = {}
-    for ch in input_channels:
-        label = f"Digital In {ch}"
-        lines[ch] = ax.step(time_data, data[ch], where="post", label=label)[0]
-
-    ax.legend()  # Show legend
-
-    def update_plot():
-        if not updating_enabled:
-            frame.after(TAB_NOT_ACTIVE_CHECK_INTERVAL_MS, update_plot)
-            return
-        
-        # Shift existing data left
-        for ch in input_channels:
-            data[ch].pop(0)
-            data[ch].append(GPIO.input(GPIO_DIGITAL_INPUTS[ch]))
-
-        # Update only the y-data for efficiency
-        for ch in input_channels:
-            lines[ch].set_ydata(data[ch])
-
-        canvas.draw_idle()  # More efficient than draw()
-        frame.after(DIGITAL_PLOT_UPDATE_DELAY_MS, update_plot)
-
-    update_plot()
-
-
-
-def set_updating_enabled(is_active):
-    global updating_enabled
-    updating_enabled = is_active
-    if DEBUG: print(f"digital_plot tab: set updating_enabled to {updating_enabled}")
-
--- a/rpi-scripts/gui/tab_exit.py
+++ b/rpi-scripts/gui/tab_exit.py
@ -1,21 +0,0 @@
-
-import tkinter as tk
-from tkinter import ttk
-
-def create_exit_tab(notebook, root, pwm1, pwm2):
-    frame = ttk.Frame(notebook)
-    notebook.add(frame, text="EXIT")
-
-    ttk.Label(frame, text="Exit the GUI", font=("Arial", 20)).pack(pady=20)
-    
-    def exit_program():
-        pwm1.stop()
-        pwm2.stop()
-        root.quit()
-        root.destroy()
-
-    exit_button = ttk.Button(frame, text="Exit Application", command=exit_program, style="TButton")
-    exit_button.pack(pady=20)
-
-    style = ttk.Style()
-    style.configure("TButton", font=("Arial", 18), padding=10)
--- a/rpi-scripts/interface_board_libs/adc_mcp3208.py
+++ b/rpi-scripts/interface_board_libs/adc_mcp3208.py
@ -1,74 +0,0 @@
-import spidev
-import time
-
-DEBUG = False
-
-
-class MCP3208:
-    def __init__(self, bus=0, device=0):
-        # Initialize SPI bus and device
-        self.spi = spidev.SpiDev()
-        self.spi.open(bus, device)  # Default SPI bus 0, device 0 (you can change as needed)
-        self.spi.max_speed_hz = 1000000  # Adjust based on your needs (e.g., 1MHz)
-        self.spi.mode = 0b00  # Set SPI mode (Mode 0 for MCP3208)
-    
-
-    def read(self, channel):
-        """
-        Read the ADC value from the specified channel (0-7).
-        """
-
-        # MCP3208 is a 12-bit SPI ADC. Communication requires sending a 3-byte command and receiving a 3-byte response.
-        # The bits in the command sequence are structured as follows:
-    
-        # Command Byte (8 bits):  
-        # | Start (1) | Mode (1) | Channel (3) | Padding (3) |
-    
-        # The MCP3208 responds with 3 bytes:
-        # - Byte 1: Contains the highest bit (bit 11) of the 12-bit ADC result.
-        # - Byte 2: Contains bits 10-3 of the ADC result.
-        # - Byte 3: Contains bits 2-0 of the ADC result.
-
-        # Ensure the channel is valid (0-7)
-        if channel < 0 or channel > 7:
-            raise ValueError(f"Channel must be between 0 and 7. (current channel={channel})")
-
-        # Construct the command byte sequence:
-        # - Start bit (1)  -> 1000 0000 (0x80)
-        # - Single-ended (1) -> 1100 0000 (0xC0)
-        # - Channel (3 bits) shifted into position
-        cmd = 0x80  # Start bit: 1000 0000
-        cmd |= 0x40  # Single-ended mode: 1100 0000
-        cmd |= (channel & 0x07) << 3  # Move channel number to bits 5-3
-
-        # Send the command and receive the 3-byte response
-        ret = self.spi.xfer2([cmd, 0x00, 0x00])  # Send 3 bytes, receive 3 bytes
-
-        if DEBUG:
-            print(f"result[0]: {bin(ret[0])}, result[1]: {bin(ret[1])}, result[2]: {bin(ret[2])}")
-
-        # Extract the 12-bit ADC result from the received bytes:
-        val = (ret[0] & 0x01) << 11  # Extract bit 11 (MSB)
-        val |= ret[1] << 3  # Extract bits 10-3
-        val |= ret[2] >> 5  # Extract bits 2-0 (shift down)
-
-        return val & 0x0FFF  # Mask to ensure only the lower 12 bits are used
-    
-
-    def close(self):
-        """Close SPI connection."""
-        self.spi.close()
-
-
-
-# Example usage:
-if __name__ == "__main__":
-    adc = MCP3208()
-    try:
-        while True:
-            for i in range(8):
-                adc_value = adc.read(i)
-                print(f'ADC[{i}]: {adc_value}')
-            time.sleep(0.5)
-    finally:
-        adc.close()
--- a/rpi-scripts/interface_board_libs/shift_register.py
+++ b/rpi-scripts/interface_board_libs/shift_register.py
@ -1,51 +0,0 @@
-import RPi.GPIO as GPIO
-from time import sleep
-
-
-class ShiftRegister:
-    def __init__(self, data_pin, latch_pin, clock_pin):
-        self.data_pin = data_pin
-        self.latch_pin = latch_pin
-        self.clock_pin = clock_pin
-        self.current_byte = 0  # Tracks the current state of the shift register
-
-        GPIO.setmode(GPIO.BCM)
-        GPIO.setup(self.data_pin, GPIO.OUT)
-        GPIO.setup(self.latch_pin, GPIO.OUT)
-        GPIO.setup(self.clock_pin, GPIO.OUT)
-
-    def write_byte(self, byte):
-        """Writes an 8-bit value to the shift register."""
-        GPIO.output(self.latch_pin, 0)
-        for i in range(8):
-            GPIO.output(self.clock_pin, 0)
-            GPIO.output(self.data_pin, (byte >> (7 - i)) & 1)  # MSB first
-            GPIO.output(self.clock_pin, 1)
-        GPIO.output(self.latch_pin, 1)
-        self.current_byte = byte  # Update the internal state
-
-    def clear(self):
-        """Clears the shift register (sets all outputs to 0)."""
-        self.write_byte(0)
-
-    def set_pin(self, pin, state):
-        """
-        Sets an individual pin to HIGH (1) or LOW (0).
-        Pins are numbered 0-7, with 0 being the LSB (Q0) and 7 being the MSB (Q7).
-        """
-        if not 0 <= pin <= 7:
-            raise ValueError("Pin must be in range 0-7.")
-        if state:
-            self.current_byte |= (1 << pin)  # Set the bit to 1
-        else:
-            self.current_byte &= ~(1 << pin)  # Set the bit to 0
-        self.write_byte(self.current_byte)
-
-
-    def toggle_pin(self, pin):
-        """Toggles the state of an individual pin."""
-        if not 0 <= pin <= 7:
-            raise ValueError("Pin must be in range 0-7.")
-        self.current_byte ^= (1 << pin)  # Flip the bit
-        self.write_byte(self.current_byte)
-
--- a/rpi-scripts/interface_board_pins.py
+++ b/rpi-scripts/interface_board_pins.py
@ -1,113 +0,0 @@
-# Pin mappings for GPIOs and other components specifically for the pi-interface-board_v1.0
-
-
-
-
-# ======================
-# === Digital Inputs ===
-# ======================
-# Pin mappings for digital inputs (labeled on housing as 1-8)
-GPIO_DIGITAL_INPUTS = {
-    0: 25,  # Dig-IN_1 is connected to GPIO_25
-    1: 16,  # Dig-IN_2 is connected to GPIO_16
-    2: 26,  # Dig-IN_3 is connected to GPIO_26
-    3: 13,  # Dig-IN_4 is connected to GPIO_13
-    4: 6,   # Dig-IN_5 is connected to GPIO_6
-    5: 5,   # Dig-IN_6 is connected to GPIO_5
-    6: 22,  # Dig-IN_7 is connected to GPIO_22
-    7: 24,  # Dig-IN_8 is connected to GPIO_24
-}
-
-
-
-
-# ======================
-# === Shift Register ===
-# ======================
-GPIO_SHIFT_REG_DATA = 27
-GPIO_SHIFT_REG_LATCH = 17
-GPIO_SHIFT_REG_CLOCK = 4
-
-# FIXME: numbering in schematic is wrong (inverse) layout / terminal order matches the shift register though (left to right -> 0-7)
-# Shift Register Channel Assignments
-SHIFT_REG_CHANNEL_BUZZER = 0  # Buzzer connected to shift register channel 0
-SHIFT_REG_CHANNEL_RELAY1 = 2  # Relay 1 connected to shift register channel 2
-SHIFT_REG_CHANNEL_RELAY2 = 1  # Relay 2 connected to shift register channel 1
-
-
-
-
-# ===============
-# ===== ADC =====
-# ===============
-# ADC IC is connected to RPI SPI interface 0 (pins below)
-ADC_SPI_BUS_NUM = 0  
-ADC_SPI_DEVICE_NUM = 0
-ADC_SPI_CS_PIN = 8  # SPI Chip Select for MCP3208
-# MISO_0: GPIO_9
-# MOSI_0: GPIO_10
-# SCLK_0: GPIO_11
-# CE_0:   GPIO# MCP3208 (ADC)
-
-# Pin mappings for Terminal number to actual ADC channels, including max voltage range
-ADC_TERMINALS = {
-    0: {"adc_channel": 1, "max_value": 3.3, "unit": "V"},  # Terminal 0 -> ADC channel 1, max 3.3V
-    1: {"adc_channel": 0, "max_value": 3.3, "unit": "V"},  # Terminal 1 -> ADC channel 0, max 3.3V
-    2: {"adc_channel": 3, "max_value": 5,   "unit": "V"},  # Terminal 2 -> ADC channel 3, max 5V
-    3: {"adc_channel": 2, "max_value": 5,   "unit": "V"},
-    4: {"adc_channel": 5, "max_value": 12,  "unit": "V"},
-    5: {"adc_channel": 4, "max_value": 24,  "unit": "V"},
-    6: {"adc_channel": 7, "max_value": 20,  "unit": "mA"}, # Terminal 6 -> ADC channel 7, max 20mA
-    7: {"adc_channel": 6, "max_value": 20,  "unit": "mA"},
-}
-
-
-# Alternative to ADC_CHANNELS list have separate constants for the channels (more intuitive)
-ADC_CHANNEL_T0__0_TO_3V3  = 1
-ADC_CHANNEL_T1__0_TO_3V3  = 0
-ADC_CHANNEL_T2__0_TO_5V   = 3
-ADC_CHANNEL_T3__0_TO_5V   = 2
-ADC_CHANNEL_T4__0_TO_12V  = 5
-ADC_CHANNEL_T5__0_TO_24V  = 4
-ADC_CHANNEL_T6__0_TO_20MA = 7
-ADC_CHANNEL_T7__0_TO_20MA = 6
-
-
-
-
-# ====================
-# === SPI Terminal ===
-# ====================
-SPI_BUS_NUM = 1
-# MISO_1: GPIO_19
-# MOSI_1: GPIO_20
-# SCLK_1: GPIO_21
-# CE_1:   GPIO_7
-
-
-
-
-# ====================
-# === I2C Terminal ===
-# ====================
-GPIO_I2C_SDA = 2
-GPIO_I2C_SCL = 3
-
-
-
-
-# ===================
-# === PWM outputs ===
-# ===================
-GPIO_PWM1 = 18  # RPI_PWM0
-GPIO_PWM2 = 12  # RPI_PWM0 too
-
-
-
-
-# ====================
-# === UART / RS485 ===
-# ====================
-GPIO_UART_TX = 14 # RPI TXD
-GPIO_UART_RX = 15 # RPI RXD
-GPIO_UART_DIR = 23