There are plenty of “robot” projects out there that are really just a small remote control platform of some sort. We often like to think of robots of having some sort of autonomy though. [Luca Fagioli ...
Closed-loop position control of a 12 V geared DC motor with a Hall-effect quadrature encoder. You type the PID gains (Kp, Ki, Kd) and a target angle into the Serial Monitor. The motor turns to that ...