Solar Sound Modules

Over the last couple of years, I have regularly been building solar sound modules, relatively simple electronic circuits that make sound using solar energy. Ralf Schreiber send me a lovely circuit diagram (thanks!). What’s so nice about these analog circuits is that they create unstable signals – always different sounds – by using a variating and limited amount of energy (tiny solar cell) and by accentuating the impreciseness of the electronic elements. Every instance of the same circuit design will have its unique sound character.

Here some sound and pics:

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