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  1. Cybercow

    Germanium Filter PCB

    Does anyone know of an available & verified PCB for the Germanium Filter. I tried Moonn Electronics, but the order I placed went unanswered for two months so I submitted for and got a refund from PayPal. I could prolly do one up in Vero/stripboard, but I prefer a prefab PCB. TIA!
  2. Cybercow

    'Nuther Overcast (Spirit in the Sky) Fuzz

    After completely redoing the enclosures, I've now finished a coupla Overcast Fuzz pedals. (The first go-round I had the Volume & Sustain labels backwards.) I went with @Chuck D. Bones' 0.1.1 modification of the circuit and bent the PedalPCB circuit board accordingly. I tried the original...
  3. Cybercow

    All Along The . . . .

    The PCBMania Watchtower is more than just YATS. The multiple clipping options alone make this pedal a worthy build. But with the voicing switch; togglable "Bright" & "Buffer" options; and two, footstomp-swappable, independently controllable gain channels, this build becomes an adventure in OD...
  4. Cybercow

    Anyone Ever Use a UAF42 in a Pedal Build?

    I ran into a monolithic IC named the UAF42 (Universal Active Filter from TI or Burr-Brown) and find it quite interesting for potential use in pedals where flexible LP, BP HP & Notch filters can be applied. Anyone else know of this chip, seen it or used it? They run rather expensive at bout $42...
  5. Cybercow

    DEFX Pretty Tears

    The DEFX "Pretty Tears" project is (IMO) pretty spectacular. Just finished building mine (didn't rock it before boxing it) and fired it up. Bypass works fine. But when I the engaged the pedal (the LED lit up - YAY!) it made no sound. WTH???? So I futzed with the knobs & switches and got nothing...
  6. Cybercow

    Digital Tweezers Anyone?

    Just got a set of DT71 Digital Tweezers. Anyone seen/heard of or use these?
  7. Cybercow

    Anyone Ever Use a SN76477 Complex Sound Generator?

    Found an old (May/June 1981) issue of Polyphony with some "Tricks with the SN76477". It's an old, out-of-production sound generator chip with a lot of interesting features/options. The chip is only available from eBay where I found one reliable USA seller who has some NOS of them for $25.00...
  8. Cybercow

    DeadEnd FX 'Reflektor' Project

    The DeadEnd FX 'Reflektor', IMO, is quite a complex build; especially when it comes to housing the guts. Make three or four tiny mistakes on the enclosure drills and artwork and bench-life gets intense. (3 labels in wrong spots, missing expression label and control drills just 1mm to close to...
  9. Cybercow

    Creamery Compressor Troubleshooting

    Finished building out three of the Creamery Compressors and they all perform differently. One works as I suspect it ought to. The other two have different control (pots) issues. In one, the Compression pot seems to do nothing, the Level (volume?) seems quite weak, and the Attack really kicks...
  10. Cybercow

    OptoComp (GPCB Squishy Octopus - DOD 280 clone)

    Nice optical compressor circuit from GuitarPCB, their "Squishy Octopus" board (DOD 280 Compressor clone). As it says on the label "squishy"! I'm guessing it's the reactance timing of the optic coupler.
  11. Cybercow

    Headphone Amp with Reverb

    Just finished up a custom PPCB combo build for my grandson. Using PPCB's Heaphne Amp and their Gravitation Reverb boards, I put together this nice little unit so he could practice without disturbing his neighbors. The 'Stereo Spread' is a nice feature and WOW does it get loud. The added reverb...
  12. Cybercow

    When is a Pedal Build a 3-D Jigsaw Puzzle?

    Every time! Here are two PedalPCB "Sunn-T" builds using TO-92 J201s biased at 5.0V on their respective Drains. Detailed planning & wire weaving is crucial . . . . Sunn-T for the 70's-80's win!
  13. Cybercow

    SSM2166 Compressor (with mods)

    Messed about with an SSM2166 and came up with this configuration. Just using two pots, but added two more stomps. The pots are Sustain (compression) and Boost (volume). The Sustain and Boost stomps are wired in such fashion as to jumper the 2nd lug on each of the pots to jump immediately to max...
  14. Cybercow

    Milkbox Compressor (Creamery Compressor)

    A bit subtle for my tastes, but an easy build with a nice range of compression controls.
  15. Cybercow

    Sea Horse Machine

    This turned out to be quite different from what I was expecting from a PT2399 chip. Lotsa fun with this after the build. A no-fuss build.
  16. Cybercow

    Q P Fuzz 3.14 (Kewpie Fuzz)

    A sweet BMP-like sounding circuit . . . . the Q P Fuzz (PPCB Kewpie Fuzz). Another no-fuss build.
  17. Cybercow

    Honey Dripper +: a Modified 70's Dipthinizer Circuit

    4 years ago I procured a couple MadBean 2015 "Honey Dripper" (Colorsound Dipthonizer) PCBs for a custom commission request and got it built out with the requested modifications. This is a sweet, versitile auto-wah sort of circuit from the 70's. Instead of a single, fixed filter, it has a...
  18. Cybercow

    Rockman Acoustic Guitar Pedal clone (Dunlop version)

    After meticulous tracing both the Rockman (SR&D - gray button) Acoustic Guitar Pedal and the Dunlop Acoustic Guitar Pedal (blue button), and all the heavy lifting in KiCAD for PCB layout work from @rwl, we've accomplished a working PCB for this oldie goldie. We went with the Dunlop blue button...
  19. Cybercow

    "STORM" Closed Circuit Booster Limiter

    Another nice surprise from @Robert. The "Closed Circuit Booster Limiter". Who knew such a great utility pedal existed? Not me. Anyway, here's my build out of it.
  20. Cybercow

    FETamine HCL Fuzz ~900mg (Nein Fuzz)

    I was pleasantly surprised by the sound of the Nein Fuzz and intrigued by its use of JFETs. So I built it out and enclosed it in a decent wrapper. I did do some pre-measuring of the JFETs to target close to what was spec'd in the build docs. I went with anything was within ±5% of the specs.
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