I worked as a tutor together with Iiro Tujula in a solar-synth workshop for children, arranged by Käsityökoulu Robotti. The duration of the workshop was one week and the participants were between 11-13 years old. The workshop was arranged in Stoa cultural centre, eastern part of Helsinki. Below are some photos and videos with sound samples from the workshop.
Circuit for the synth was 4093 NAND synth together with lm386 amplifier circuit. Solar panels were from Sparkfun. I have arranged a similar solar-synth workshop in collaboration with the Nomadic Academy in 2012 at Harakka, Helsinki .
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