Have you ever wanted to make your own sentry gun that is based off the Nerf N-Strike Vulcan EBF-25 Blaster? Instructables user BrittLiv, has built such a device with a NERF Vulcan gun, stand, motor and a laptop. Using recognition software, the laptop’s camera can track someone walking in front of it, the gun moving to follow the person’s movements. The best part of this build is that she posted up how to build it! The one thing the guide doesn’t mention is the cost of the build. The Nerf Vulcan alone runs around $210 plus shipping, so this would be an expensive build.
The video below shows the Nerf Sentry gun in action!