Arduino Nerf sentry gun build: Motorized mount

John Edgar Park

John Edgar Park likes to make things and tell people about it. He works at Disney Research and writes for Make and Boing Boing. He is training for American Ninja Warrior. You can find him at jpixl.net and twitter @johnedgarpark -- if you like that sort of thing.

269 Articles

By John Edgar Park

John Edgar Park likes to make things and tell people about it. He works at Disney Research and writes for Make and Boing Boing. He is training for American Ninja Warrior. You can find him at jpixl.net and twitter @johnedgarpark -- if you like that sort of thing.

269 Articles

Article Featured Image

sentryMount04.jpg

What’s a Nerf sentry gun without a sweeping rotation? I knew I needed motorized rotation to cover a wide field of (foam) fire, but how to mount the thing?

I disassembled the supplied tripod mount and found my answer: there was a spring loaded mount that clamped to the underside of the Nerf gun.

sentryMount01.jpg

I went in search for a surplus DC gear motor that could be adapted to the mount clamp, and found a 250 RPM 12V motor with a plastic disc attached to its shaft. I marked and drilled some holes in the disc to screw the mount clamp into. Now I’m ready to build a stand to attach the motor to and bear the weight of the entire sentry gun. There’s no way the plastic toy tripod it came with is up to the task, so I’m checking out some t-slot aluminum instead.

sentryMount05.jpg

In the Maker Shed:

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Arduino Duemilanove

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