Before starting, most of the credits are going to Thomas Krichbaumer who provide me the CAD files for his cat feeder design (https://www.thingiverse.com/thing:3623148).

For some real code to use with this device, head over to https://github.com/ultrara1n/dualcatfeeder-esp32

s The electronics are based on an ESP32 microcontroller, a L298N driver and two DC-Motors (relativeley high torque and low rpm).

Beside standard tinker equipment (soldering iron, breadboard, cable etc.) there are some components I especially bought for this project:

Make sure that the size of your power socket and the provided plug of the power supply are matching! In this case both are 5,5mm*2,1mm.