It's based on the ATmega 328 version: https://github.com/TheDIYGuy999/Rc_Engine_Sound and on bitlunis Halloween example: https://github.com/bitluni/MotionPumpkin ...

Circuit board for RC cars with Arduino-based firmware to control any model/toy/robot with servo and brushed DC motors. It can be used for RC cars and other vehicles such as trains, city layouts, boats ...