This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Friday, December 30, 2016

Catalinbread V8 Fuzz Engine

For the final Fuzz Friday of the year, here's another one from Catalinbread. It's a fairly unique design and much like the Hyperpak, it uses a 4007 chip and will fit in a 1590a.

Wednesday, December 28, 2016

Brown Sound in a Box 2

Somehow I've not laid out this DIY classic, so here's the BSIAB2. It's a great distortion pedal designed by Ed Guidry and is probably a must for any of you EVH fans.

Friday, December 23, 2016

Earthquaker Devices Hoof Reaper

It's the last Fuzz Friday before Christmas, and as a present to you here's 3 effects in one–the Earthquaker Hoof Reaper. It combines the Tone Reaper fuzz, the Green Ringer (Tentacle) octave, and Hoof fuzz in one package. For the germanium transistors, originals use an AC176 in the Reaper side and 1N1308s in the Hoof, but others can (and have) been used, so socket and experiment. Also, it seems the originals have the Octave first from the input jack. So despite the footswitch arrangement, the signal goes, Input jack > Octave > Reaper > Hoof > Output Jack. Pots are all board mounted and it should fit in a 1590BB.

Hope everyone has a great holiday!

Wednesday, December 21, 2016

Catalinbread Hyperpak

Here's an older design from Catalinbread (now discontinued). The Hyperpak is based around a CD4007UBE to generate a wide array of tones. Be sure to use the unbuffered version of 4007. Shouldn't be too hard to fit into a 1590a like the originals.

Monday, December 19, 2016

Dan Armstrong Red Ranger

Here's a classic circuit from Dan Armstrong–the Red Ranger. It's a booster with a switch for boosting treble, full range, or bass. Original units didn't have a volume control, but it could easily be added to the output.

Friday, December 16, 2016

Heavy Darling Fuzz

Found this one over on DIYSB and thought it'd be a good Fuzz Friday layout. It was designed by Dragonfly for the old FX-X contests. Here's what he had to say about it:

The Heavy Darling is a SIMPLE fuzztone that cleans up great, has old school character, and good sustain...pretty much ANYONE who can solder should be able to build this one. It uses a MPSA13 Darlington transistor in the 1st stage that pushes the 2N3904 into full saturation. The 220k resistor limits the amount of saturation, and you could certainly experiment with values here. A pot could also be used to give some variable gain, and you could even set up the pot in a similar manner to the Orpheum, Fuzzrite, and Shin-Ei style fuzzes.

Wednesday, December 14, 2016

Red Llama + BMP tone stack

I drew this up last month on a whim, built it and it actually sounds pretty good. It's just a Red Llama with a Big Muff tone stack tacked on to the end. Ripe for tweaking to your own taste, especially with the values of the tone section. I changed the values to give boosted mids, but those are easily changed (consult google for different tone stack values), and I used 47n caps instead of 68n and 33n that are normally in a Red Llama (only because I have a ton of that value in my parts stash haha).

Monday, December 12, 2016

Electro-Harmonix OD Glove

Here's the Glove from EHX's nano series. Essentially, it's an OCD with a switchable charge pump. On originals the voltage switch is internal, but external makes more sense to me, so wire that to your preference. Here's the schematic for reference.

Friday, December 9, 2016

Skreddy Top Fuel

For Fuzz Friday, here's another fantastic Big Muff variation from Skreddy–the Top Fuel. It replaces the input stage with a MOSFET-based stage, and uses an interesting diode array for the 2 clipping stages.

Wednesday, December 7, 2016

Black Cat OD-1

This one's pretty simple, but is really versatile going from light overdrive to fuzz levels of gain. Originals use an OP275, but other dual op amps can be used (1458, 4558, TL072, etc.). It's should be a nice fit in a 1590a.

Monday, December 5, 2016

Catalinbread Naga Viper

Here's a versatile boost from Catalinbread. It has its roots in the classic Rangemaster treble booster, but with a silicon transistor, the Range pot varying the input capacitance, and the Heat pot controlling some of the gain. Check out the thread on FSB for discussion, schematic, etc. This is laid out for board mounted pots with the board mounted vertically.

Friday, December 2, 2016

OMG Fuzz

Found this design over on DIYSB and thought it would be a good Fuzz Friday layout. The One Mighty Gnarly Fuzz is a pretty straight forward design that you probably have all the parts for in your parts drawer. Check out the DIYSB thread for the schematic, and build notes.