WatchOut! - DIY-Mini-Synthesizer

by romanjurt, published

WatchOut! - DIY-Mini-Synthesizer by romanjurt Dec 11, 2012

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30187Views 4430Downloads Found in Audio


Make noize! A solar-powered-two-bottons-control-mini-synthesizer that let's you skretch with light and produce fat beats and strange sounds!


The WatchOut!-Synthesizer makes sound due to a program on an attiny13-chip! Dependent on the light intensity, a solarpanel reads this program and gives the power for the sound production. The more light shines on the cell, the higher and louder the pitch. There are different programs which defines the function of the two buttons. Because of the inconstant power-source the processing of attiny13 is very unstable, which actually gives us nice sounds!

Electronics You need:
1 PCB (to mill or etch), 1 100uF Capacitor, 1 ATtiny13 with socket, 1 Solarpanel (Panasonic 3V 23mm33mm) 2 Buttons (11.8mm11.8mm), 1 Minijack socket, 1 Piezo loudspeaker (13.6mm diam) Wire (for solarpanel)

Non-Electronics You need:
2 M4 Screws, 2 M4 Nuts, 1 Acrylic(or printed) deck 1 Acrylic (or printed) base with 1 Wristband (30mm*220mm length)

This Project has quite evolved over the last month...
People and Groupes involved:
Felix Bänteli, Urban Bieri, Roman Jurt

watch an early video here:

and check the latest update on our wiki!

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Yes, please post the schematics! I want to proto this on breadboard!

This is magic. Beautiful. Thanks for sharing.
How can there be no comments to such a great idea since 2012.

no idea, this is awsome^^
addet this to things ill make after i built my cnc