Recent content by mstrat

Kind of late to reply here, sorry, but in case you're still in need and haven't seen them... https://mstratman.github.io/fv1-programs/ It's a repository of FV-1 programs that have been submitted or were floating around various forums. Lots of good stuff there.

Probably a little late for you, but in case anyone else comes across this thread looking:

Aha! Thank you. I had assumed harmonics went well above that but never really validated that. And I so frequently see filters in the 15kish range it just further solidified that assumption. Seems so obvious now in retrospect, but I guess that's how it goes. Thanks so much!

Sure of course. And I did. Sorry I guess my question wasn't well stated. I'm not looking for permission, but for reasoning. i.e. why was 220 chosen? Was there concern over high frequencies at high volume? Issues with lower value caps in the feedback? etc

Can you elaborate? At max volume, if I'm not missing anything, the 220pF puts the LPF shelf at about 7kHz. This is within audible range. At 100pF it'd boost it to about 15k, which seems more "transparent". Assuming I'm not miscalculating or misunderstanding, I guess a more direct question...

Is there a good reason to keep C14 at 220pF? Is that going to cut too much highs at a max volume? Would 100pF be a better choice?

Also FYI if you're looking at the schematic in the published build doc, the 47k pull up has been removed.

The CTL pads connect to pin 3 of the AVR, and the 100K is a pulldown from 3 to GND. This is for new channel switching behavior: https://forum.pedalpcb.com/threads/new-relay-bypass-module-instant-switching.2722/ For regular on/off relay switching, pin 3 isn't used.

Do you have a pic you can share? How was the experience?

It's the Revv G4. Not sure if that is based on the bogner, though.

I'm building this now, and - assuming it's identically to the G4 - totally agree.

I've used it many times without a problem.

I just received a relay board that differs from what's in this build doc: https://docs.pedalpcb.com/project/PedalPCB-IntelligentRelayBypass.pdf Some example differences: * It has a 100K below the attiny, where the build doc shows C2. * It has a 100n where build doc shows R2 * It has "CTRL" pads...

So the Source is in fact connected to R27? and the drain toward the ground? Sorry I guess I'm not familiar with that inversion (the arrow moved to the top?) Thanks again!

Unless I'm misunderstanding, the schematic for ADHD v2 and the board are contradictory for Q5. The schematic has the Drain going toward R27 to VCC, and the Source going to R29 and R26 toward ground. The board, at least as pictured on https://www.pedalpcb.com/product/adhd/ has those two...