As a hobby programmer of microchips such as Arduino controllers, I used them to make my model truck moving.
The truck is moved by a PF XL motor, the steering is done by a servo, both controlled by a WeMos microcontroller.
The chip communicates over local WiFi with the self-made control panel.
An Arduino Nano supported by a L298D H-bridge is responsible for the trailer functions:
- outrigger moving, done by two Mini motors
- suspension moving, done by two servos
- switching the magnets to lift the Playmobil boxes
The Nano gets its commands via a serial link to the Wemos.
A push on a button starts e.g. up- or downloding of the box.
Here is a video: https://youtu.be/GgyzbxhsYYI
