What is a Pid

[4869Robotics]

What Is a pid? I have been seeing things about them but dont know what they are.

[John_TYler]

PID controller

[Connor]

Probably the two most useful videos explaining PID, how to use them, as well as how it is important for programming mechanical components:

PID Balance+Ball | full explanation & tuning

Hardware Demo of a Digital PID Controller

[4869Robotics]

I’m confused what the point of them is

[John_TYler]

It’s one method of controlling outputs

[Connor]

PID is an algorithm used for motors to do extremely precise movements. I would highly suggest learning PID once you are roughly a sophomore or junior, as it can also help you with learning Calculus if you plan to take that class. Bear in mind, there are many many other types of control loops, but PID is the most popular due to its simplicity and ease-of-use.
Here explains what the P, the I, and the D means:

What is a PID controller?

The p part is proportional, or what we nickname “error”. error = desiredValue - currentValue. This is a position, or delta x So if you get the derivative of error (which error is a position, or delta x), you will get speed (error - previousError). So, you can use the this to help correct if the robot is moving too fast or too slow due to external sources like additional unknown friction or battery crapping out. How the derivative is applied in code is by error(current error at the moment) - p…