Various effects
- 2-in-1 Tube Screamer derivative & AMZ Mosfet Boost – Something I put together as a gift for a relative.
- 3-band parametric equalizer – Combining parametric EQ ideas from Geofex with the graphical EQ circuit from GGG.
- Basic wah circuit with added mods – Based on an article by R.G.Keen called “The Technology of Wah Pedals” found on Geofex.
- Boss OC-2 Octaver – Modified schematic.
- Digital reverb – Stereo output with tails for the Belton BTDR-2 brick.
- Envelope controlled State Variable Filter – A MuTron III / Meatball auto-wah derivative I put together.
- Hot Cat emulator – Attempt at a JFET approximation of this dual channel preamp.
- Latching relay w/ ATTiny85 – 3PDT switch replacement using microcontroller and relay.
- Lighthaus – A light-weight version of the “Openhaus”.
- Mesa Boogie Mark IV Lead channel emulator – Attempt at a JFET approximation of the lead channel of this preamp.
- Splitter Mixer – Slight modification of the runoffgroove Splitter Blend project.
- Sabro Drive One – First attempt at a boost/overdrive circuit.
- Sabro Drive Two – Second attempt at a dirt circuit.
- Tap-Tempo LFO example circuit.
- Tap-tempo LFO, v2 example circuit.
- Tap-tempo LFO, v2 alternative example circuit.
- Tap-tempo Chorus – Adaptation of the Boss CE-2 Chorus.
- Tap-tempo Phaser – Adaptation of the MXR Phase 90.
- Tap-tempo Trembulator
- Tap-tempo Tremolo v2 – Loosely based on the Trembulator.
- Tap-tempo Tremolo (alternate version) – Loosely based on the Tremulus Lune.
- TC Sustain + Parametric EQ (modified) – Factory schematic with switching and buffered bypass circuitry removed.
- Variable Bandpass Filter – Based on a design by R.G.Keen of Geofex and mods by M.Hammer.
- Variable Bandpass Filter + LoFi Telephone Noise – Same as the above circuit, but with additional mods/addons.
- Vibrato – Fairly simple opamp vibrato based on the first stage of the Phase 90.
Amplifiers
- Amp project #2 – 30W dual channel amplifier.
- Amp project #3 – 15W clean-ish single channel 6V6.
Traces
Source code
If I end up with enough of these I’ll make another section.
You can change it, certainly, but you’ll have to experiment a bit as to how low/high you can go without going over the edge where the FETs are no longer biased correctly. Making R4/R10 larger and R3/R9 lower should increase the difference between boost and non-boost.
Hi Mike. It’s a bit time consuming, but here’s what I always do when I draw layouts:
– Print out both schematic and layout-to-be-checked on paper.
– Sit down with a pen/pencil and some good music.
– Meticulously go through each and every component on the schematic and verify it on the layout. As you do this, keep track of all nodes where more than one component connects and make sure it complies with the schematic.
I know, boring 🙁
Hey Harald
How can i power up a little bit the boost function in the Pinnacle layout?
Is that possible?
Regards
Hi there, I recently made my first vero layout based on this phantom powered DI (http://www.pbsong.com/tech04_page.html). I was wondering if you could look over it and tell me if its ok. This is the vero https://docs.google.com/file/d/0BzdGja9EYJ7-REFueG5kSUNqbzA/edit?usp=sharing