Conengmo / ovencontrol

Designing a PID controller for an oven with Python

ovencontrol

This project consists of two parts: Python code to process measurements and design a controler, and Arduino code that implements the controller.

Note that you need a specially modified oven to actually work with the controller.

Python

First install the package localy without copying files by running this pip command:

pip install -e {path to the folder with this file}

or on linux:

pip install --user -e {path to the folder with this file}

Next you can run the files in the 'ovencontrol' folder to:

• open and plot the system identication data
• model the plant (i.e. the oven)
• model the controller
• open and plot the controller test data

Arduino

The Arduino part consists of three files.

'AutoPID.cpp' and 'AutoPID.h' are the AutoPID library by rdownin4 under MIT license.

https://github.com/r-downing/AutoPID

'ovencontrol.ino' is the Arduino script.

If you want to change the timings, you can do that by altering the values in getSetPoint(). Note that in some phases the phase is ended at a certain temperature, and in some after a certain number of seconds.