[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly ... up to the motion controller upstream. The Arduino source for this can be found on the project ...

To do this in Arduino/C code, a new intermediate position for the servo is specified for each ... Adafruit wrote an excellent tutorial on this method of multitasking, which [James] based his ...

This includes LEDs, LCD modules, servo motors, and buzzers ... start small using one of the built-in examples in the Arduino IDE. The most beginner-friendly sketch here is the "Blink," which ...