Awesome tutorial and build from MrTinkerer on instructables.
How to machine / make a custom sonic screwdriver out of aluminum with Arduino inside.
This Instructable documents the creation of two custom Sonic Screwdrivers for two very special people in my life. They are huge Doctor Who fans and I could not resist making this for them.
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The Sonic Screwdriver reminds me [in shape] of my first crystal radio – which was shaped like a rocket. Tuning involved sliding the rocket nose up and down, which moved the ferrite core in the transformer coil.
Which has me wondering: how much of a radio could you fit inside a custom-made Sonic Screwdriver? Would a metal case act as a “shorted turn” for a coil inside?