Recent content by phi1

Nice! Could it be simpler, like just a big cap in parallel with the LED? Ok maybe it’d have to be too high capacitance to get a slow fade

Short downstream? Or bad 78l03? Measure the current draw of the pedal.

I don't know that this will affect the volume, but I believe the 47R in the power input is too high for this circuit. The FV-1 pedals I've made draw around 60~65mA. V=IR, so the voltage drop accross the 47R is 0.060 * 47 = 2.82V. So after the 47R, you'll be down to ~6.18V. P=IV, so that...

For the test circuit, I think you'd have to watch out for clipping the op-amp before the signal reaches the diodes, and that might mess with the results? I think the RAT and 250 type circuits have op amp clipping which affects the tone, when driven hard. Maybe could boost the power up to 18V...

Maybe not exactly what you're after, but here's a similar conversation. https://forum.pedalpcb.com/threads/bat41-vs-bat46.17103/post-202017

No idea how the rules work, but my understanding is Robert made the pun first...

Sweet color scheme and artwork. I would recommend soldering at least one leg of each transistor if you haven’t already. I’ve had them fall out of the socket

Nice build. This is an interesting schematic. I looks to me like the 4148s and 4007s pretty much redundant? Almost all dirt pedals do low cut before clipping and treble cut after. This one does treble boost before clipping and bass boost after clipping. I guess in a way it’s similar (bass...

DIY Layout Creator is good for designing your own layouts. Either Stripboard or Perf.

I cut my teeth on strip board (tagboard effects site) and it’s still my preference. But, cutting the breaks with a drill bit is kind of annoying. the EE guys at my work prefer perfboard and using the extra leg as the trace like pictured above. Effectslayouts.com is a whole site of perfboard...

You can also access the programs built into the FV-1 by grounding pin13. you can do this by slidering a wire onto whichever side of R5 connects to pin13 and grounding that wire. This would get you the patches 0, 1, and 2 listed here (depending on toggle switch position).

I would use an audio probe to check for signal at the fav-1 input pin (pin1, top left) and output (28, top right).

The LPB-1 input impedance is quite low (43k). Idk what the pickup is exactly or what impedance it wants to see, but LPB-1 seems risky.

I feel like boosts fall into a few categories. -just louder - usually I go op amp, maybe a bit sterile but great if you already like your tone. -tone changer/enhancer. EP style are popular, like secret preamp. The EP ones Usually sounds a bit thicker. These tend to get talked about in...

Gain and volume knobs would do the same thing, unless there’s distortion. Does he want it to distort?