The first extension for Heavy will add an auto follow mode.
A specialized camera module (the wonderful Pixy2) is used to track optically a colored target like an orange flashy cap or a shirt.
Then, the coordinate of this target is given to the main microcontroller of Heavy thanks to the SPI connection available in the extension port.
Some steps
The frame, the tank mods, the adaptor plates and the electronic are specialy hand made :