We never tire of watching Strandbeests with their multitude of legs walking around, and especially enjoy the RC ones. [Jeremy Cook], prolific Strandbeest maker, just made one by motorizing and addi… ...

PCB integrating an ESP-WROOM-32 microcontroller with two A4988/DRV8825 stepper motor drivers. This is a four layer PCB that I originally designed this for an ESP-32 controlled, NEMA17 powered robot.

This program can feed two separate fishtanks simultaneously. The two tanks are called JEFF and BOB. The steps for the stepper motors are calibrated to match the distance in the 3D printable feeder ...