CRT tubes are thing of the past. But not for David, who decided to make a robot (RETRobot) with CRT tube on it. And he did this only for fun.

Robot is driven by AVR ATmega128 microcontroller that does some routine tasks like driving stepper motors (actually via additional ATmega32), reads remote commands via Bluetooth and the most fun part – displays some information on CRT tube. This is quite challenging projects as you probably know driving Tubes isn’t easy tasks as it needs some electronics skills (high voltage!). Because of quite complicated power supply there is an additional dedicated ATtiny2313 used.  It’s fragile, it’s green, it’s Retro-bot .