555 Piano

Alexander Ryzhkov created a small 555 timer-based piano:

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555 piano

Main goal of this project has been creating pretty designed 555 based piano in small form-factor. Many 555 piano are using 9V battery for supply. I use CMOS timer and for timer need only 3V supply.
The design files are available on GitHub:

githubChirnoTech/555Piano

white
Here is a video of the board in action:
openidev has shared the board on OSH Park:

piano.toplayer.zip

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Order from OSH Park

555 Piano

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