redart
New Member
Hi,
I've built this circuit (design courtesy of **broken link removed**) and am having trouble with stability. Sometimes it starts ok and the left hand LED flashes twice for each flash of the right hand LED, as per design. Sometimes it doesn't start, or the LEDs will flash out of sequence. Once it has started it will work fine for maybe 30 seconds, then the LEDs will again go out of sequence. However, if I touch the supply line with a finger, it will start working perfectly and will continue to work as intended until I remove my finger. Can anyone offer an explanation of what is going on, and suggest how I can modify the circuit to replicate whatever it is I'm doing by touching it ?. Thanks.
I've built this circuit (design courtesy of **broken link removed**) and am having trouble with stability. Sometimes it starts ok and the left hand LED flashes twice for each flash of the right hand LED, as per design. Sometimes it doesn't start, or the LEDs will flash out of sequence. Once it has started it will work fine for maybe 30 seconds, then the LEDs will again go out of sequence. However, if I touch the supply line with a finger, it will start working perfectly and will continue to work as intended until I remove my finger. Can anyone offer an explanation of what is going on, and suggest how I can modify the circuit to replicate whatever it is I'm doing by touching it ?. Thanks.