twingesabit
New Member
**broken link removed**I'm working on developing a battery operated touch circuit as shown in the attached circuit. I've been able to prototype the circuit and test it out and everything functions. I moved it over to a breadboard for unit prototyping and everything works.... when it's plugged into a variable DC bench supply. When plugged into a battery it either doesn't work at all or erratically. Contrary to the design, the trigger and reset pins do not need to shunt to source/ground in order to operate the LED. I've found that by just connecting a wire from pin 6 and a wire from pin 2 I can operate the circuit just by touching the stray wire. That's the way I have it set up in the proto box and that's the way it operates on the bench supply. My guess is that grounding is the difference between success and failure. However, given the nature of the design, I'm going to have trouble creating a ground. Can anyone determine a solution that would allow this circuit to work under a 9V battery?
Just a side note, I'm using this to develop a multi touch toy for my daughter, she likes the lights and noises that it produces.
Just a side note, I'm using this to develop a multi touch toy for my daughter, she likes the lights and noises that it produces.
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