Welcome to my remote controlled truck project. This should work for most Tamiya style 1/14 scale trucks with 3 speed gearbox and a compatible ESC. Here is a short video of my truck.
The firmware code will work with a RedBear Duo controller and can probably be adapted to other controllers. App contains the source of the remote control all developed with Thunkable. You will need to change the hardware address to match your board. Electronics contains is the circuit board created using Fritzing.