Arduino Nerf sentry gun build: Making the stand

Arduino Technology
Arduino Nerf sentry gun build: Making the stand


Once I’d attached the Nerf gun to the motor mount, I designed a stand to support the gun and the distance sensor, Arduinos, and firing circuit. Using some 20mm 80/20 t-slot aluminum and connectors, I built this. It started out as a tripod, but grew some feet, so now I’m not sure what to call it.


I didn’t have a profile long enough to add support to the angled front and back pieces, so I grabbed a piece of scrap from the stereo I removed from my wife’s car and used that.


The motor that sweeps the gun back and forth is driven by a MotorShield and Arduino. To know when to reverse direction, I added a bump switch to either side of the stand framing. When the grip hits a switch, it’ll go the other way. In a marriage of two competing aluminum building systems, I’ve got MicroRax plates coupling the switches to the 80/20.


Here it is in it’s full glory. The aluminum is strong, but lightweight. Once the electronics are complete, and enclosed, I’ll attach them to the stand as well.

In the Maker Shed:

MotorShield for Arduino

Discuss this article with the rest of the community on our Discord server!

John Edgar Park likes to make things and tell people about it. He builds project for Adafruit Industries. You can find him at and twitter/IG @johnedgarpark

View more articles by John Edgar Park


Ready to dive into the realm of hands-on innovation? This collection serves as your passport to an exhilarating journey of cutting-edge tinkering and technological marvels, encompassing 15 indispensable books tailored for budding creators.