50 Hertz square wave with 555 timer

303

06:14:31

LED on for 10 milliseconds then off for 10 milliseconds, powered by four NiMH cells.

Update: Replaced a potentiometer with a fixed resistor, added a NPN Bipolar Junction Transistor, now the main capacitor charging and discharging controlled by a single potentiometer which is always 50% duty cycle.

published 9 months ago

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