An IC That Can Annoy Any Room! 555 Timer Piano

Описание: In this video, PCBWay sponsors me to make an annoying noisemaker based on a 555 timer and an ubiquitous circuit easily found online.

Try it for yourself:
https://www.pcbway.com/project/sharep...

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https://s.click.aliexpress.com/e/_ANdJJh

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