A simple and easy to use PID controller in Python. If you want a PID controller without external dependencies that just works, this is for you! The PID was designed to be robust with help from Brett Beauregards guide.

Usage is very simple:

from simple_pid import PID
pid = PID(1, 0.1, 0.05, setpoint=1)

# Assume we have a system we want to control in controlled_system
v = controlled_system.update(0)

while True:
    # Compute new output from the PID according to the systems current value
    control = pid(v)
    
    # Feed the PID output to the system and get its current value
    v = controlled_system.update(control)

To install, run:

python -m pip install simple-pid

Documentation, including a user guide and complete API reference, can be found here.

This project has a test suite using pytest. To run the tests, install pytest and run:

pytest -v

Licensed under the MIT License.