Simple square wave generator and LED flashing test

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this is a reference came from a Russia guy

the page & design is original as the link,




my experiment and the result


In reviewing the past of experiment to 1.5V square wave generator (, this one has some advantage but also some disadvantage, for example, when human body touch underneath metal plate of the bread board, the frequency (LED flashing speed) changed a lot, the video clip shows this, white LED is obvious, but the green LED is not the so obvious.


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