Links

connection plan

See connection-plan.pdf

flowchart firmware

See function-diagram.drawio.pdf

Installation

Install esp-idf

Currently using ESP-IDF v4.1.4 (5.X did not work due to breaking changes and CMAKE issues)

1. download esp-idf:

clone the esp-idf repository from github

2. checkout version needed:

git checkout release/4.1

3. run install script e.g.

/opt/esp-idf/install.sh

Clone this repo

git clone git@github.com:Jonny999999/cable-length-cutter.git

Compilation

Set up environment

source /opt/esp-idf/export.sh

(run once in terminal)

Compile

idf.py build
#or
idf.py build flash monitor

Usage

[WIP...]

Components

rotary encoder LPD3806-600BM-G5-24C

- Pulses: 600 p/r (Single-phase 600 pulses /R,Two phase 4 frequency doubling to 2400 pulses)
- Power source: DC5-24V
- Shaft: 6*13mm/0.23*0.51"
- Size: 38*35.5mm/1.49*1.39"
- Output :AB 2phase output rectangular orthogonal pulse circuit, the output for the NPN open collector output type
- Maximum mechanical speed: 5000 R / min
- Response frequency: 0-20KHz
- Cable length: 1.5 meter
- size: http://domoticx.com/wp-content/uploads/2020/05/LPD3806-afmetingen.jpg
- Wires: Green = A phase, white = B phase, red = Vcc power +, black = V0