John Park retrospective: Auto Nerf Sentry Gun @arduino @nerfnation @johnedgarpark « Adafruit Industries – Makers, hackers, artists, designers and engineers!
Sentry Gun | Devpost
Sentry | Nerf Wiki | Fandom
Amazon.com: Nerf N-Strike Vulcan EBF-25 Dart Blaster (Discontinued by manufacturer) : Toys & Games