An Arduino Nano is the heart of the build, paired with a shield that lets it run a number of servo motors. The servos, one per key, are each assembled into a 3D-printed bracket with a cam-driven ...

and three PWM signals to the servo box. With the help of an Arduino Nano, [fichl] can change any of the knobs independently, or switch between twelve programmed settings. It’s an interesting ...

For additional control, Esghati uses an Arduino Nano, which handles pulse generation for the drive servos. This combination of affordable, accessible components makes the robot a practical ...