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You can use any kind of capacitor your want there. Electrolytics are cheap, and in that position they're out of the audio path so no need for anything super fancy. There's not even much DC derating of caps to worry about. Most people would prefer to work with THT electros over a SMD MLCCs

Updates, and an ETA on I/O boards?

There are no parts being hoarded by anybody that is making them hard to find for builders. It's a you problem my friend

G'day, Bought a couple of cheap grab bags of germaniums out of Eastern Europe from eBay, and was expecting a reasonable rate of failure due to leakage/poor gain - and to my shock, there was only a single bad transistor! I've got: *half a dozen GT402B's (100-150hfe, <150uA of leakage) *handful...

Yo dawg, I heard you like buffers.

Ok bizarre - some quirk with zone transparency that I solved by opening the file on another machine, saving it, then going back to the original machine. Fixed now!

I don't want it for editing my silkscreen. I like having a good idea of where everything is and where it's going so I can visualise the PCB better. Every other version of Kicad has had this by default. It's on. The silkscreen is hidden underneath the copper layers - if I turn f/b copper off I...

I feel like I am going crazy here. I've used Kicad 5 through 9, and a lot of the PCB editor changes have been particularly frustrating. My newest problem is that no matter what I do, my silkscreen layers disappear under any copper layers making it very hard to see what's going on. PCB created...

Use whatever ceramic over about 47n you've got available - these aren't anywhere near as necessary now with better electrolytic construction as they used to be

Pull R9/10/11. If you don't have ~250v on the positive of C1 you have a power supply problem

Fwiw, I've had the occasional board with the same issue - both PedalPCB boards and those I've had manufactured. Out of interest I pulled components and the pads themselves had zero continuity. I think it's just the rare one that slips through QC

My dude, you can literally follow the traces, through the vias, on both the PCB as well as the build docs. There is zero confusion about where any of it goes for the couple of traces I mentioned as the entire path is visible with both sides of the PCB visible on an image. Either way, I fixed...

You can literally see where the traces go on both the PCB and the build docs. There is no confusion about where it's going, and why it probably shouldn't be.

If I get my shit together I've got a power PCB finished (using cheap 30v transformers to get ~160v for HV + 6.3v/1A + 12.6v/500ma for heaters), and a bunch of frequency/gain charts from somebody who spent months figuring out how to perfectly emulate 12A*7 stages with subminiatures. He's also put...

Out of interest, I superimposed both sides of the PCB on top of each other, and drew the input/output jack traces (green), the first grid stopper (white) and the output to the 3PDT (orange). There is a single shared ground plane for everything - input/output and switching supply. There's...

Pedal oscillates regardless of what's happening on the input - whether it's grounded, floating, or whether the pedal is on/off it oscillates (and is audible on the output). Turning it on only amplifies the oscillation. Swapped to a 740, no difference (also have used these on a few 555-based...

Ok, so Coilcraft clearly just use whatever component code they want - I have a couple of spares, and they all measure at 110uh.

Ok, things are....very weird. I ordered 100uh inductors from Mouser. This is the same listing from every single distributor out there, as well as the Coilcraft website. They even have 1mh inductors available with a code one multiplier designator higher (which you'd expect if they were labeled...

After somebody else pointed out the grid stopper for the first triode (which should be as close to the grid as is possible) is not only miles away, but has traces on both sides that run right through the middle of the power supply on both sides of the board, I thought I'd relocate it as a final...

Film caps are probably the most ubiquitious part out there after resistors - I have never seen any electronic store where they're not readily available.