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Having trouble reading this schematic. What is going on with pin 5 here? (Muroidea circuit) Is it going nowhere?

I’m thinking about building a reverb pedal for vocals. (FV1) This means I would be working with XLR instead of 1/4” mono guitar jacks. What are some things I need to consider when designing a circuit with XLR jacks? For example, I imagine I will need to keep power negative and earth separated...

Today I bought the Spatialist. I will only need to use the shimmer mode patch. How could I modify it to not use the rotary switch but just hard wire it to always be in shimmer mode?

Where can I get a soldering sponge that doesn’t have a donut hole in the middle of it?

This is a question for those of you who sell pedals. I’m wondering if people are typically willing to pay more for pedals that have effects created by the FV-1 chip. Those chips are pricey, and I’m wondering if there is a good chance of recouping the extra cost or if people just expect them to...

Are these the same. The price is different but they look the same. I don’t mind the extra cost if it is a higher quality switch. https://www.taydaelectronics.com/3pdt-stomp-foot-pedal-switch.html vs...

What ballpark should I aim for with the 2N2222A in the Dragon’s Breath. I have quite a range of options. Is lower or higher better (for that circuit)?

What would happen if I changed the 100k pot to a 25k pot for the output volume control? (On the Muroidea)

I treated myself to purchasing one of these desoldering pumps on Amazon. Has anyone else tried these? I think it’s terrible. Wondering if I’m missing something. The tips aren’t pointed enough to get into small areas so it is hard to aim and not burn stuff. It also takes too long to melt the...

I’ve noticed that sometimes the solder pools on both sides of the PCB and sometimes it does not. Is it ok if the solder pools on the side you are working with but does not flow all the way through to pool around the pad on the other side? See attachment for example.

Am I supposed to add a component here?

Trying to breadboard a delay circuit for the first time. This 33R resistor keeps going up in smoke. I don’t expect anyone to deconstruct this whole breadboard, but am wondering common causes that I could double-check.

I may be in the market to buy some diodes soon. I’ve heard so much negativity about buying diodes on EBay. I just wonder if there is any way to tell if they are going to be fake or real before purchasing. I see posts like this (see attached screenshot) all the time and they look good in the...

I assume that if there is no little black node on the intersecting lines, it means there is no connection, correct? So like, here, where the intersection happens, it is just that there wasn’t room to draw where it goes without crossing over a line, but those wouldn’t connect.

I’m used to being spoon-fed the transistor part list, but here I have a value range and not sure what it means. I think it means “any transistor with an HFE in this range” but not sure. For example, see Q1 here. I think it wants any transistor (NPN) with an HFE ranging from 140-200. Am I correct?

I’m wondering what the universal color codes are for wiring. Here is what I’ve been using, but wondering if that is confusing for anyone opening up my pedals later. Red: Positive Black: Negative or Ground Green: Ground Yellow: Input Blue: Output White: Jumpers

Is it ok to use heat shrink tubing on electrolytic capacitors or do they need to breathe? Like, does heat need to be able to escape off of the top of them or something? The reasoning for it could range from a preferred look to avoiding a short when bent and touching the underside of the circuit...

I have a 9V battery only (no power jack) on a fuzz circuit. How can I wire a footswitch so that when it is in true bypass, the battery is not draining? (I don’t have a stereo jack.) It has an LED as well. If I use this wiring technique, would the battery keep draining regardless of the switch...

I just finished building a Radium Springs. I noticed there’s not a lot of demos out there for it so I added one. I really enjoyed building it and to me the pedal sounds great! Perfect for what I needed. I had some big ambient reverbs already but wanted something more subtle and ampy for faster...

I have a question about DipTrace. I’m very new to this. How do I ensure nodes intended for grounding get connected to the poured copper ground plane. See video explanation.