- Joined Jun 28, 2023
I can find timer circuits to blink an led but I would like to have a circuit that causes an led to continuously blink after it is actuated by a voltage pulse. Not sure about the pulse voltage but since it normally operates a small speaker it is probably a small and sufficient voltage. My operating supply for the circuit will be 5v, and I need 3v? to the led. I need a momentary switch for resetting the led. I can experiment with component values to get the blink rate to my liking. Can anyone give me a simple circuit for this? Seems like it would just take two transistors or an ic. 555? 547? Thanks.