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  1. jdduffield

    TL072CP Op Amp Differences

    Hilarious! And quite good actually.
  2. jdduffield

    KiCAD or Eagle?

    I have a cheap $150 PC but my main computer is an iMac.
  3. jdduffield

    KiCAD or Eagle?

    I’m ready to take the next step and start working on building custom PCBs. I’m a tech savvy guy and not worried about the learning curve, so if one is more complex, but better, that is ok with me. My question is, should I get into learning KiCAD or Eagle? Which is better and why? Something I...
  4. jdduffield

    Lost friction in potentiometer after cleaning

    Would the Fader stuff be better for me to have started with for cleaning?
  5. jdduffield

    Lost friction in potentiometer after cleaning

    Kliche Mini. But I can’t say for sure if these three pots were scratchy. I got a batch of pots that kept coming out that way right out of the gate so instead of reopening the new pedals I would clean all and any pots first. (Not knowing it desolves grease.) I guess I should stop doing that. I’m...
  6. jdduffield

    Lost friction in potentiometer after cleaning

    What is the long term solution? Replace the pot? Irony is I’m putting brand new pots in. They just happened to be scratchy upon arrival.
  7. jdduffield

    Lost friction in potentiometer after cleaning

    I’ve been cleaning scratchy potentiometers with DeoxIt D5. Sometimes it causes a loss in friction and the potentiometer becomes too easy to spin/change. I guess it loses its grease or something, or loosens the grease inside that acts as a mechanical resistance for making the knobs change more...
  8. jdduffield

    IC Chip Orientation - Ocelot Build

    Do I have the IC chip orientation correct on these? I think I’ve got it right but double-checking before soldering them down because there are seven of them and I’m not using sockets. I always thought the dot aligns with the side containing the arch marking and square pad. However, in this case...
  9. jdduffield

    Substitute for 2SK30A?

    Thank you. You’re too kind. I’ll message you.
  10. jdduffield

    Substitute for 2SK30A?

    Thanks. I’ll give it a try. My 2N5457s are from Tayda. I’ll socket them and see what happens.
  11. jdduffield

    Substitute for 2SK30A?

    I googled it and found this. Do you think this is a scenario where the 2N5457 would be a good substitute?
  12. jdduffield

    Substitute for 2SK30A?

    I’m working on an Ocelot which calls for a 2SK30A, but I don’t have any. I have this pack from Amazon (see attached) and I have some 2N5457s and some 2N5458s. Will any of this work as a substitute or should I place an order for the 2SK30As?
  13. jdduffield

    Branding Question

    Here’s one of the other Buzz Fuzz pedals I found … AFTER producing mine. 🤣 I’ve been spending time trying to think of other names, but finding a unique name is proving to be difficult. For example, I thought of Bumble Buzz … looked it up and sure enough there is already one out there.
  14. jdduffield

    Branding Question

    I would likely mention it in the description and in any printed instructions if any.
  15. jdduffield

    Branding Question

    I have a question around branding. I made a batch of fuzz pedals to give to some of my guitar playing friends. Several have told me it is their favorite fuzz pedal. It is a Sandspur circuit with a modification in that I brought the internal trim pots out to the front panel and changed the taper...
  16. jdduffield

    Separating Audio & Power Path

    Yes, thank you.
  17. jdduffield

    Separating Audio & Power Path

    I realize this is a noob question, but I’m trying to understand something about the audio signal path vs the power signal path. I’ve always thought (before I got into this stuff) that the audio and power path are joined at some point within a circuit. Now I’m not so sure. Things I’ve noticed is...
  18. jdduffield

    Best place to order resistors?

    I’ve wondered about this too. For a potentiometer, is it not enough to simply put the wire through the lug and solder it? Does it really make a difference if the wire is wrapped around and clamped prior? I guess my question is how strong is solder and if the solder didn’t hold wouldn’t it still...
  19. jdduffield

    Best place to order resistors?

    I realize it’s slightly off topic, but how important is it to bend the leads on the flip side of the board when soldering? Most builders do this to hold the leads in place. Some say it is better because of the mechanical connection aspect (in other words, not depending solely on the solder for...
  20. jdduffield

    Best place to order resistors?

    Good to know. I didn’t realize the tolerances could waver that much. I’ll definitely watch out for that. Out of curiosity, is returning them an option?
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