Recent content by Briks

Double checked with DMM, definitely 500r

Yeah, trimmers all seem to be correct. I did end up changing out the Speed pot as I wasn’t getting any resistance on the lower tier. All I had was a b100k dual gang. Still no pulse and now not getting any audio through the pedal. I probed the whole audio path, which worked every step from input...

I typically leave that off for testing since the 9v is at the top of the pcb as well.

Lamp voltages remained constant after turning the Speed pot. Going clockwise from top left, the voltages are: 6.53; 6.53; 16.02; 13.06. I checked everything in the light region of the schematic. Only discrepancy was that I had a 2M resistor in instead of a 2.2M resistor. I changed that out...

I added another piece of insulating tape and angled it off the board a little so there was absolutely nothing touching. Still no pulsing. The dual pot I got feels a little janky even though I got it from Small Bear. Wondering if I need to replace it.

That's correct, it's lit and not pulsing. The trimmers do make a difference in the lamp brightness.

Just tried it with the lights off and an enclosure covering it, no difference. Even not in complete darkness, wouldn't you be able to see the lamp pulsating at different speeds? This is my first univibe-type build, so excuse the ignorance!

My issue is that while the lamp lights up and the tone section affects the signal, the speed and depth knobs do nothing. I can move my hand across the lamp and get some vibe, but can't do it on its own. Should mention that when I first built it, I left out the L78L15 voltage regulator and...

Let me know if this works!

Update...I changed out the pt2399 just in case. Still having the same issue.

I double checked the components and had to switch out a few incorrect resistors. I also reflowed a few suspect solder joints. Still have the same issue. It happens at R13 then every connection from there. Here are some photos (took the Belton off on one to assess those joints). I appreciate all...

So I built my first audio probe as I’m still new to this. At first the oscillation began at R9, I switched it out which stopped it. Then it happened again at R13, which I also switched out and the oscillation persisted. Since the issue didn’t occur at IC1, and happened before the pt2399, I’m...

My Spirit Box powers on and passes signal though when I have the depth knob raised anywhere below 0 I get a nasty oscillation that worsens the more i turn it up. I’ve checked my values and connections, everything seems to be ok. Please let me know what the issue may be or what info you’d need to...