Paintball Sentry Gun

A paintball turret that aims on its own, and shoots at anything that moves.

This Gladiator III turret was built as a training tool for RealWorld Tactical training. The turret is built from machined aluminum and steel, and driven by precision stepper motors. A powerful embedded computer tracks targets using an HD camera.

I built and sold several of these systems for use as training tools. The open-source code and custom controller hardware is used for training by the St. Louis Police Dept and the Royal Australian Navy, among others.

This project has been featured on TechCrunchHackaDayBoingBoingTestedHacked GadgetsDangerous Prototypes, and Geek.


Instructional and demo videos. 1.1 million views.


The Project Sentry Gun website has instructions, code, and a large user forum.