Hi everyone!
For my latest project, I'm converting an old enclosure that was drilled for a battery to one that has the foot switch down at the bottom. I retrofitted the old hole with a jewel lens and a 555 timer LED circuit with 2 LEDs flashing (think old pinball or carnival display).
https://youtube.com/shorts/k1Dx8S_cJPE?feature=share
The problem: I can hear the timer pulses in the audio signal.
My assumption is that possibly a cap at the power source might help (or maybe even at the ground), but I have no idea how to think of values and all that...
The timer circuit is below (I'll admit it's a bit sloppy - definitely would make changes next time, but trying to work with what I've got here) - 9v is directly to the power supply, ground is to the LED lug of the typical 3pdt foot switch.
I could always just throw a standard LED in there, but I'm trying to have a little fun here, hehe... each pin with any power has 100u cap on it, and the rest are 1k resistors (I have so many, so I just ran them in parallel to get the values I wanted).
Any thoughts?
For my latest project, I'm converting an old enclosure that was drilled for a battery to one that has the foot switch down at the bottom. I retrofitted the old hole with a jewel lens and a 555 timer LED circuit with 2 LEDs flashing (think old pinball or carnival display).
https://youtube.com/shorts/k1Dx8S_cJPE?feature=share
The problem: I can hear the timer pulses in the audio signal.
My assumption is that possibly a cap at the power source might help (or maybe even at the ground), but I have no idea how to think of values and all that...
The timer circuit is below (I'll admit it's a bit sloppy - definitely would make changes next time, but trying to work with what I've got here) - 9v is directly to the power supply, ground is to the LED lug of the typical 3pdt foot switch.
I could always just throw a standard LED in there, but I'm trying to have a little fun here, hehe... each pin with any power has 100u cap on it, and the rest are 1k resistors (I have so many, so I just ran them in parallel to get the values I wanted).
Any thoughts?