The custom servo can tune the endpoints ... Overall, a very well-done project. The motor control uses a PID algorithm. Potentiometers set the end range and sensitivity. A push button allows ...

[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly ... The Arduino source for this can be found on the project GitHub. Whilst [Frank] mentions that ...

Raspberry Pi HATs offer small, stackable data acquisition with features like analog and digital I/O.