Ljudmaskin. The main components are the speaker, LM386 amplifier, 7805 voltage regulator and Attiny85 for sound synthesis and LED action.

Ljudmaskin. The main components are the speaker, LM386 amplifier, 7805 voltage regulator and Attiny85 for sound synthesis and LED action.

I was invited to give a workshop in Malax by nice people from Stormvind Malax. This was a workshop for children. We spent a busy afternoon building these small noise machines. We had 13 participants in this workshop ages from 10 and up. Arvid van der Rijt and Veera Knuuti were co-directing the workshop with me.

Building of the instrument. This is almost no-soldering workshop, only 9V battery clip needs to be soldered in.

Building of the instrument. This is almost no-soldering workshop, only 9V battery clip needs to be soldered in.

My Ljudmaskin is basically Attiny85 based synth with one touch contact. It is built on tiny breadboard and is run by 9V battery. It has lm386 as amplifier (that I’m now thinking of getting rid of) and a tiny speaker. The main idea comes from drawdio, and the sensing part is done similarly. There is one pin that is programmed to emulate 555 chip. The synthesis is fully done on software. This allows much more complex output textures than what simple squarewave oscillator of drawdio could ever produce. The software is pretty close to what I used in my Synakyna workshop, but at some point I thought that ditching the pencil makes project both simpler and more fun. I have given workshop based fairly similar design few times now and start to be quite happy with the design. But there are still few things I would like to improve for the future iterations.

Ljudmaskin trio performance!

This workshop is suitable from ages 9 and up and takes around 3-5 hours in total. Drop me a line if you would like to book a workshop.

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