Welcome to Project Sentry Gun, home to the most versatile sentry gun system on the web!

On this site we have published complete directions on how to make your own sentry gun, which autonomously tracks, aims, and shoots at targets, using:
  • An airsoft or paintball gun
  • A webcam to find targets
  • A computer to process the video feed and aim the gun
  • Servo motors aim the gun and squeeze the trigger
  • A controller to interface between the computer and the servo motors

We are a unique project in that everything we do is completely open-source. This includes 100% of our code, as well as our electrical schematics, and even the CAD design files for our Standalone Controller. Our system has been used on six continents and in more than 20 countries (so far), and is even used by the Australian Navy in their training program.

Here's a video of our latest paintball sentry gun, the Gladiator II, in action:

And a video of Britt's Nerf Vulcan Sentry Gun:


LEFT: Eugene's paintball sentry (Ukraine), CENTER: Andrea's airsoft sentry (Italy), RIGHT: Britt's Nerf Sentry Gun (http://www.instructables.com/id/Nerf-Vulcan-Sentry-Gun/)


The Project Sentry Gun software UI (control panel and webcam viewing window shown):

Want to build your own?
You're in luck! All the help and information you will need is here, and the software is free and open-source. Lots of people have already used this system in their own sentry guns, with successful results. Check out the links on the left side of this page for all the resources you will need, including a step-by-step guide to the entire build process. After that, check out the forum to see others' completed sentry guns, sentries in progress, ideas and improvements, and FAQ's.