ArduinoOven

This is an Arduino-controlled conveyor oven.

It has two burners, at the top and bottom of the chamber, each with its own thermocouple. Each burner has a stepper motor attached to its valve, and is controlled with a PID-control-loop.

The conveyor is moved by a DC motor, with an encoder attached to the shaft, and is also controlled with a PID-control-loop.

Video

https://www.youtube.com/watch?v=MHU5xQRTyus

Flash Arduino with Raspberry Pi

Install Arduino CLI

https://github.com/arduino/arduino-cli

Install Board and libraries

Need to document this better. The board is an Arduino mega, and the libraries are in the /libraries folder

Compile and Upload firmware

Open terminal, cd into project folder and execute this command

arduino-cli compile --warnings default --fqbn arduino:avr:mega &&
arduino-cli upload --fqbn arduino:avr:mega -p /dev/ttyACM0

Setup logging and graphing PIDs data in a Raspberry Pi

Enable in ArduinoOven.ino the flag DEBUG_PID_JSON

#define DEBUG_PID_JSON

Add entries to cron

1. open crontab

   crontab -e
   

2. Add the following cronjobs at the end, changing projectFolder

    @reboot {projectFolder}/log.sh
    */1 * * * * date +"\%FT\%R" >> {projectFolder}/log/pid.log