PID_Temperature_Controller

C/C++ multi-threaded code for PID temperature controller and logger with Teensy 4.1 microcontroller

P = Proportional (How fast the system responds)
I = Integral (Used to remove steady state error)
D = Derivative (Used to speed up the response of the system)

Schematic

PID Tuning recommendations:

Derivative can add noise to the system
Set I and D to zero then tune P
Tune I when satisfied with P controllers response D can be left at 0 if a PI controller is suitable for your needs

References / Libraries Used:

Phil’s Lab PID Implementation:

https://www.youtube.com/watch?v=zOByx3Izf5U
https://github.com/pms67/PID

Multithreading library:

Multithreading library by Fernando Trias https://github.com/ftrias/TeensyThreads

RTD Sensor library:

Adafruit PT100/P1000 RTD Sensor w/MAX31865 library by Limor Fried/Ladyada @ Adafruit Industries

PID Tuning video:

https://www.youtube.com/watch?v=IB1Ir4oCP5k