You can catch enemy spies in the act of touching your stuff by building a motion alarm with a vibration switch, Gemma M0, and a piezo buzzer! Any time it is moved enough to trigger the vibration switch, it will sound the alarm!!

1 x Gemma M0
Small, round microcontroller
1 x Piezo Buzzer
Fully enclosed
1 x 3x AAA Battery Holder
with On/Off switch
1 x AAA batteries 3 pack
Alkaline power
1 x USB Cable
6” A/MicroB

You'll also need three M3 x 8mm screws and four nuts to attach parts to the Gemma M0.

Last updated on Mar 11, 2018 Published on Mar 15, 2018