LegoTank
Reconvertion of 30 years lego bricks
This carterpillar is controlled manually with a standard bluetooth logitech joystick. Automatic mode is under beta test :)
Parts :
Raspberry pi
Logitech joystick
2x TIP120 TO-220 Darlington Transistors NPN
2x DV 5V Coil 8 Pins DPDT Power Relay
1 battery of an old mobile
1 mobile external USB battery
1x HC-SR04 Ultrasonic Module
...