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  1. z2amiller

    Where did I go wrong...

    There's a recent reddit thread about this very thing in /r/diypedals. () Someone mentions they've 3d printed a covering plate - and you can also get a PCB made as a switchplate/faceplate. There are some pinned threads on one of the forum links here that explain how to do that...
  2. z2amiller

    Where did I go wrong...

    Can we see a picture of the top (bottom?) of your pedal and how the DC jack connects? Pedals are tip-negative, sleeve positive - so if your sleeve contacts the enclosure at all you'll have a short and nothing will work because the enclosure is also at ground (negative). This includes using a...
  3. z2amiller

    Xotic EP Booster...gain control does nothing

    Agree with @phi1, you could do some troubleshooting by trying to take the cap and/or pot out of the equation. There's not a lot going on here, so either the cap is bad or the gain pot is bad, and you've measured the pot. I'd try to replace C6 and see what happens.
  4. z2amiller

    Capacitor on a Strymon Flint V1

    It's possible that you have worse problems - I can't tell for sure but it looks like whatever broke the cap off might've taken the solder pad with it. I might see a tiny tear up through the 'C' of C43 where the trace vacated the premises. The good news is that it looks like that pad connects to...
  5. z2amiller

    SOLVED Help with LFO ticking (Karaoke Chorus)

    Do you have a TL072 to try instead of the TL022? That might be an upgrade over the 358 in there. Some other random advice: Are your input or output wires close to the LFO at all? Those are big antennas that can pick up the quick voltage changes. You could try beefing up the capacitance on...
  6. z2amiller

    Dark Rift Delay -- PCB Routing Available?

    Could the pinout of the 7805 be backwards? I think 7805 and 78L05 are switchsies. It looks like it's already in backwards but just check out the datasheet and make sure it's in the way it's supposed to be. Theoretically yeah all of those should be at the same voltage - do they have continuity...
  7. z2amiller

    Question pastel preamp /preamp knob question

    I've noticed this with mine as well. One thing that I've tried that helps the fartiness when pushing the PRE knob is running at a higher voltage. I'm able to get more out of it at 18V than at 9V. Of course this works better if you've over-specced your capacitors. 25V (which is what is...
  8. z2amiller

    This Week on the Breadboard: The Nut Job OD

    Oh yeah sorry I forgot to mention - I will probably build this with SMD for myself so I was looking for ~equivalent JFETs and the 209s look close enough so I penciled them in on the schematic. I forgot to change the silkscreen for the through-hole layout but it'd be the two types you mentioned...
  9. z2amiller

    Reducing noise in audio circuits

    I'll bite. I'm not an expert here in the least, but - Using honkin' 1/2W or 1W resistors is gonna run at odds with your design goals of unifying your pedals in some big uberpedal. Even laying out with SMD components, a Phase90 is gonna fill up a lot of a 125B enclosure, let alone all of the...
  10. z2amiller

    Multiple Schematics in one file?

    This for sure, use hierarchical sheets -- they're super handy for keeping logical components separate. In my template, I have a second sheet under the first empty sheet that starts out with the jacks and power and all of that stuff. I've also found it really helpful when designing something...
  11. z2amiller

    This Week on the Breadboard: The Nut Job OD

    What the heck, was looking for an excuse to test drive KiCad 10! (Still not sure if I like it. DRC and zone fills are so much slower. And it's back to doing the thing where it crashes if you run DRC after making too many changes)
  12. z2amiller

    Bring out yer Diptrace

    I wonder if you could do a custom 3d-Printed washer/grommet to do the slot/tombstone style. Oh, or maybe you could do a faceplate (sideplate?) on that side to mostly hide the slots. (Though I'm not sure how you'd have that drilled, I dunno if Tayda can do it and it seems like a hassle to do at...
  13. z2amiller

    Connecting to Git?

    I have a little script to push a new effects directory -- requires: * 'gh' command line tool to make repos on github from the command line * A .gitignore file somewhere (I copy direct from my home directory, you may want to copy from somewhere else) * Ideally, git / gh commands configured...
  14. z2amiller

    Back-lit faceplate tutorial.

    Oh! And another benefit of faceplates that I thought of, but forgot to write down. You can order a ton of pre-drilled enclosures from Tayda with all of the holes that you could need already drilled, and then the faceplate covers up any holes that you don't use. e.g. you could order a bunch of...
  15. z2amiller

    Back-lit faceplate tutorial.

    Thanks so much for writing this guide for making faceplates! I created a few and got them in today and they turned out great! I created a new template in my templates directory so it's only a matter of a few minutes for me to create a faceplate for one of my pedals (assuming I'm happy with...
  16. z2amiller

    Connecting to Git?

    For what it's worth, I've been completely unable to add new projects via the KiCad UI. I have gotten it working by making the initial commit from the command line -- once I do that, I've been able to use the KiCad UI. I think if you get the command line tools working without authentication...
  17. z2amiller

    Getting Started with PCBA at JLCPCB

    I think it matters less for AC (signal), but for DC there's a pretty strong de-rating curve - the capacitance gets less as the voltage gets higher. The package size is actually relevant here as well, with physically larger capacitors losing less capacitance with a DC offset. I use X7R 1206 50V...
  18. z2amiller

    Getting Started with PCBA at JLCPCB

    Nothing that I've seen that is SMD and super small for the audio path. JLC will wave solder in a film capacitor for you, though. (C125386 is a the box film capacitor I use, 4.5mm wide). This is usually what I do for values between ~220nf -> 1uF. The first through-hole component you add costs...
  19. z2amiller

    Completely new to this! Build calling for GR diodes.

    Also there are not a large number of circuits that use PNP transistors, which is why they're fairly plentiful relative to the NPN varieties. (I think a couple of fuzz face types, but even those have largely been adapted to use NPN)
  20. z2amiller

    Completely new to this! Build calling for GR diodes.

    +1 for sovcom, the russian D9(x) diodes work in a lot of places that call for a Ge diode. But yeah the BAT41 diodes have a pretty similar voltage curve as the Ge diodes, and they're a lot easier to come by. When it comes to diodes/transistors, the original part number is generally kind of a...
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