To implement a PID controller in an Arduino sketch, five parameters must be known: proportional, integral and derivative constants, input value and set point value. Well, let’s start with a crude demo ...

Experience — or at least education — often makes a big difference to having a successful project. For example, if you didn’t think about it much, you might think it is simple to c… ...

The advantage with this method is that you can use a P, PD, PI, II, PID, or just any other controller you want, because YOU define your own transfer function, whether for (Hey, @Chris!) position ...