Have you always been bothered by your colleague or co-worker at your working place and you were wishing to find a way to payback? Well, if you have ready to get them back, then you maybe interested on this “Mini Sound Annoyer”!

You don’t need to spend a lot of money out from your pocket to buy an “Annoy-a-tron”, as it’s not only expensive but the size wasn’t small enough! Thus, it’s better to develop your own “Mini Sound Annoyer”.

Don’t be fooled by its appearance, although this Annoyer is very small, but it can emits a high pitched “beep” randomly in every 2-15 minutes. Since the beep is ultimately high, so it’s impossible to track where this beep is coming from.

No matter how hard you’re trying to find it, you just cannot tell if you’re closer, farther, or even what direction the beep sound is coming from.

The beep is tremendously loud enough to annoy anyone, and it runs off with a 3V cr2032 coin cell battery. Believe it or not, this small battery can be long lasting for about 3 months!

This Mini Sound Annoyer is built on a PIC10f202 microcontroller, which it is only cost your about $0.50 and the whole project wouldn’t spend you more than $3!

Let’s teach the prank a little lesson by using this incredible Mini Sound Annoyer!