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You're not alone in finding the Slew control a bit hard to grasp, it took me a bit of reading to get a good idea of what exactly was going on in the circuit: The Slew knob acts like a "glide" control, smoothing out the abrupt transitions between LFO steps: On a random LFO, it looks something...

There are a lot of good sourcing suggestions here, but the actual part number doesn't matter as much as the individual gain (hfe) and leakage (Iceo on some testers) values, which vary a lot even between the same part# & lot. A good rule of thumb is to look for hfe greater than 50 and leakage...

Glad to hear! I had similar issues with my build and the build doc doesn't have much info on setting up the trimpots. Now that it's dialed in, it's one of my faves!

All the real homies add that B ;)

That's super neat Chuck, congrats on the launch! I used to work with those big benchtop FT mid- & near-IR instruments in the chemistry world, and they were tricky enough to set up here on terra firma. We had one of those "high-tech" IR microscopes, but it was basically a single pixel camera...

My favorite DIY builds that I continue to use: Baja Optical Limiter (AKA Madbean Holy Roller) - Vero/Perf - Bajaman's simple, yet awesome-sounding emulation of the UREI LA2A. A very "playable" compressor with a unique sound. Mid-Fi Electronics Clari(not) - Vero/Perf - Doug Deeper was kind...

Doug is not only a straight-up good dude, and his designs are quite unique in the world of pedals & elegant in their simplicity. I recommend everyone buy his stuff as you're supporting a small builder and hopefully funding his continued creative exploits!

I did this for a while too, but it was soooo much work. You may have better luck printing "Cable Wrap" style labels rather than "Cable Flag" style ones. I now keep a little resistor color code reference taped to my monitor so I can check values at a glance. You'd be surprised how quickly you...

Haven't seen this before, but it looks handy! How many rotations do you usually give it?

The high output effects loop could be part of the issue. The signal level of effects loops varies quite dramatically, but either way it's likely much higher than the tiny 200mV peak-to-peak that a guitar pedal is based around. Try it with just the guitar plugged in (out of the effects loop), if...

A few suggestions: What kind of guitar and/or signal chain is feeding the Low Tide? - I've found the Low Tide to be quite sensitive to input signal level (especially with high-output pickups or following gain pedals), so you may want to try it with both DIP switches off and see if it responds...

Sometimes my internal monologue gets externalized.

So I want to add a separate piezo disk contact mic output to a Stratocaster, but am trying to avoid drilling holes. I was thinking I could use a TRS jack for the guitar output jack, and send the magnetic pickups & contact mic signals separately on the Tip & Ring, sharing ground between them...

9.27V straight off the PSU is fine as there is also a Schottky diode in series with the DC input, which will drop an additional 0.3-0.4V across it. If the TC1044 isn't seated properly, that would definitely affect the voltages, but the other ICs and transistors are less likely to cause global...

If you switch it from Sample & Hold to Envelope mode, the trimpots won't have any influence on the circuit, so you can use that to test if the audio is working. I'm assuming IC3 on your voltages is the TC1044 charge pump, and you're getting the right voltages on Test #2: 9V from pins 1&8, and...

I love the Mid-Fi Clari(not), especially with the Fuzz Lift switch (can't remember if the Chalumeau has that, but it's easy to retrofit either way). The delay time is very reactive to your playing dynamics and allows for some really cool sounds across the control range. My current favorite...

Interestingly enough, they take quite similar approaches, but the Lovepedal is (unsurprisingly) much simpler: Abider: Not sure what the function of Q2 is within that 2nd opamp stage though.

The two trimmers are HIGHLY interactive (as in adjusting one changes the range of the other), so you'll have to be a bit methodical in how you approach the calibration. I haven't quite found the sweet spot on mine yet, but here is the info I've been using to set my trimpots: From the...

Haven't built one, but I did play the Oxblood Germanium at a guitar shop a few years back and REALLY liked it. It had a nice saggy, zippery sound that was good at a variety of gain levels. From the ones I've built, I'm not usually a fan of Klon circuits, but I didn't know the Oxblood was based...

As Bricksnbeatles & peccary mentioned, the Beatles bass sound starts with the strings and how you play them. I've had good luck with both flatwound & tapewound strings, a bridge mute, and a pick. I think the flat/tapewound sound played with a pick is the core part of Paul McCartney's technique...