Trainbot

This is the first beambot I've ever built.

I'm not sure it qualifies as a beambot, but it was built in a similar way.
It's no engineering masterpiece, all it does is simply moving forward.

View from bottom

Materials used

Design

The whole machine is built around the battery socket. It's super simple - there are two wheels glued to the bottom of the socket, and a motor in between, with axis pressed against one of them from side. Nothing too fancy or efficient, but does the trick.

View from bottom

There's a capacitor in parallel to the motor, but it's not important in this design. There's no control logic that needs protecting here.

I've also added a switch on the back, so you can easily turn it off instead of removing the battery.

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