The April Fool’s episode, Screaming Altoids!

Here it is the very first project just in time for April Fool’s day!

I call this one “Screaming Altoids”. It’s a simple 555 timer oscillator put inside an Altoids tin. When the unsuspecting consumer of said Altoids opens the tin, WEEEEEEEEEEEEEEEEEEEEEEE it emits a loud squealing sound that’s quite annoying!

The parts list is pretty minimal on this project. It’s a fun and easy build so hack one together!

PARTS LIST:
1 – Altoids tin
1 – 555 Timer chip
2 – 100 ohm resistors
1 – 2.2 mF electrolytic capacitor
1 – 100 mF electrolytic capacitor
1 – 9 volt battery
1 – 9 volt battery clip
1 – micro switch
1 – tiny speaker
Some fine hook up wire.

Here’s the schematic and a pic:

Schematic

Finished project

The video: