Firmware for a homemade automated electric armchair.
More details about this project: https://pfusch.zone/electric-armchair

Installation

Install esp-idf

For this project ESP-IDF v4.4.1 is required (with other versions it might not compile)

#download esp-idf
yay -S esp-idf #alternatively clone the esp-idf repository from github
#run installation script in installed folder
/opt/esp-idf/install.sh

Clone this repo

git clone git@github.com:Jonny999999/armchair_fw

Instal node packages

For the react app packages have to be installed with npm TODO: add this to cmake?

cd react-app
npm install

Compilation

react-webapp

For the webapp to work on the esp32 it has to be built. When flashing, the folder react-app/build is flashed to siffs (which is used as webroot) onto the esp32. The following command builds the react webapp and creates this folder TODO: add this to flash target with cmake?

cd react-app
#compile
npm run build
#remove unwanted license file (filename too long for spiffs)
rm build/static/js/main.8f9aec76.js.LICENSE.txt

Note: Use npm start for starting the webapp locally for testing

esp project

Set up environment

source /opt/esp-idf/export.sh

(run once in terminal)

Compile

idf.py build

Upload

• connect FTDI programmer to board (VCC to VCC; TX to RX; RX to TX)
• press REST and BOOT button
• release RESET button (keep pressing boot)
• run flash command:

idf.py flash

• once "connecting...' successfully, BOOT button can be released

Monitor

• connect FTDI programmer to board (VCC to VCC; TX to RX; RX to TX)
• press REST and BOOT button
• release RESET button (keep pressing boot)
• run monitor command:

idf.py monitor

• once connected release BOOT button
• press RESET button once for restart

Hardware setup

pcb

Used pcb developed in this project: https://pfusch.zone/project-work-2020

connection plan

A diagram which shows what components are connected to which terminals of the pcb exists here:
connection-plan.drawio.pdf

Planned Features

• More sensors:
  • Accelerometer
  • Lidar sensor
  • GPS receiver
• Anti slip regulation
• Self driving algorithm
• Lights
• drinks holder

Usage

Switch functions

Currently implemented

Count	Type	Action	Description
1x	configure	[JOYSTICK] calibrate stick	when in joystick mode: set joystick center to current joystick pos
1x	control	[MASSAGE] freeze input	when in massage mode: lock or unlock joystick input at current position
2x	toggle mode	IDLE <=> previous	enable/disable chair armchair e.g. enable after startup or timeout
3x	switch mode	JOYSTICK	switch to default mode JOYSTICK
4x	toggle mode	HTTP <=> JOYSTICK	switch to 'remote control via web-app' or back to JOYSTICK mode
5x
6x	toggle mode	MASSAGE <=> JOYSTICK	switch to MASSAGE mode or back to JOYSTICK mode
7x
8x	toggle option	deceleration limit	disable/enable deceleration limit (default on) => more responsive
12x	toggle option	alt stick mapping	toggle between default and alternative stick mapping (reverse swapped)
>1s	system	restart	Restart the controller when pressing the button longer than 1 second

previous functions - not implemented

Count	Action
1	define joystick center
2	toggle motors
3	toggle log-level (WARN, DEBUG, INFO)
4	define max duty
5	toggle mode MQTT/JOYSTICK
6	toggle mode SHAKE/JOYSTICK
7	toggle testing-mode (dry-run)