The tank features metal tracks, differential steering, a rotating turret, periscopes and a functional paintball gun with camera targeting. Building a tank, even if it’s a mini replica ...

Absolutely nothing, except as an excuse to build a Raspberry Pi powered sentry turret that will track ... two servos to pan and tilt the camera and gun and a small relay to pull the trigger.

The Civil War ironclad USS Monitor’s revolving gun turret can typically be found submerged inside a 90,000-gallon tank at The Mariners’ Museum and Park in Newport News. But recently the tank ...