MyRaspberryAndMe

Tinkering with Raspberry (and other things)


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Nerf Barrel Extension + AmmoCounter + Chrono

OK, so now I am into Nerf-Guns. Seems my 8-year old alter ego has taken over. But, following the motto from the legendary eevblog, don’t turn it on, take it apart!

These Nerf blasters come with different technologies. There are purely mechanical ones, powered by springs and compressed air, and then there are some that use motors and flywheels to accelerate the funny foam darts. My first Nerf was a “Recon MK II”, mechanical. As soon as I held it in my hands I wanted to add an ammo counter (Remember: I am old and the Alien movies, especially the M41A pulse rifle, are part of my life…).
The question is how to add something electrical to a purely mechanical thingie. And I had some constraints: it has to be reversible and it needs to remain child-safe for the occasional battle with kids. So the voltage/motor/whatever modifications found on the internet were a no-go.
Well, the removable barrel extension seemed to offer enough space to integrate some circuitry… Continue reading