Arduino Nerf sentry gun build: Making the stand

Arduino Technology
Arduino Nerf sentry gun build: Making the stand

sentryStandA.jpg

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.

sentryStandB.jpg

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.

sentryStandC.jpg

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.

sentryStandD.jpg

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

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

View more articles by John Edgar Park

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