This project is to refactor my old kettle with a PID controller and its accessories to regulate water temperature below the boiling point like a Sous vide cooker. To dive deeper, please visit my personal website.
Clone this repository to your directory_to_project
git clone [email protected]:LarsonLaugh/pidML.gitFor python users, use pidtrain.py to train your PID controller in simulation. The Micropython
code for your MCU is stored in mpython folder. Please include the libraries in lib as well.
For C++ users, use pidtrain.cpp to train your PID controller instead (My test is .cpp code is 50 times
faster). The Arduino code for your MCU is stored in Arduino folder and please include the libraries
folder.
| Functional parts | Models |
|---|---|
| Microprocessor | Raspberry Pi Pico/ Ardurio Nano |
| Temperature sensor | MAX6675 |
| 220V control | Relay |
| User interface | ICD 1602 |
| User input | rotary potentiometer |
The LCD is only 16 by 2, so we have to fully exploit the limited screen space and the switch button of the rotary potentiometer.
This is the main screen to display setting temperature and reading. Press button to go next.
This is the second screen (screen1) to monitor the PID paramters in use and the calculated output value
in real time. Press button to go next and roll to the left to go back to screen0.
Above three screens (screen2 to screen4) to modify the PID parameters one by one manually. Use the
rotary potentiometer. Press button to go next.
This is the last screen screen5. Roll left to adapt Auto mode (default setting) and press button to
accept the manually set PID paramters and go to screen0.