Guitar pedal schematic

Schematic diagram of the Boss OD-1 OverDrive guitar pedal

Two Volume Knobs / Switchable Big Muff Tone Control Circuit Diode Clip Modification Dual Voltage Fuzz Boost Modification More Modifications Op Amp Pin Outs

Got a request for this one. This was originally designed by John Hollis and has since been modified by various folks in the DIY community. Like the latest version of the Little Angel chorus, it has a switch to do either vibrato or chorus tones. And the Mode switch allows for different speeds (Leslie, Normal, and Clone). Here's the schematic for reference.

Phaser Guitar Pedal: A phaser guitar pedal is a guitar effect that splits a signal, send one path through the circuit cleanly and shifts the phase of the second. The two signals are then mixed back together and when out of phase, cancel each other out. This creates a s…

Collection of vero (stripboard) & tagboard layouts for 100s of popular guitar effects, with over 1000 verified designs. DIY your own boutique effects!

The Tremulus Lune was designed by Dan Green from Commonsound and is a fantastic sounding optical tremolo. It's a very versatile trem, and has a very adjustable LFO section. The audio path goes through the TL072, and the LFO is created with the 4558. A VTL5C2 can be used, or you can make your own photocupler with an LED (3mm red) and LDR (5k/500k). The LED pads on the right side of the board is for an LFO speed indicator. This LED could easily be used as on/off indication as well. Wire the…

Got a request for this one, designed by Daniel Schwartz. Seems to be a pretty versatile cabinet simulator. Might be handy to throw this in the same box as the Mini Amp from earlier this week. More info, schematic, etc here on DIYSB. Also the next episode of the DIYLC tutorial is up on YouTube. Forgot to plug it in the post from Tuesday.

In an amongst the guitar building I decided to break out the soldering iron to build an overdrive pedal – as light relief. I had stumbled across the “Valvecaster” schematic and la…

Schematic diagram of the Boss DD-2 Digital Delay guitar effect pedal

Schematic diagram of the Boss OC-2 Octave (Dual Octave Down) guitar pedal

This is a pretty handy expansion of the zVex SHO booster. It stacks two SHOs together and adds a master volume control. This is laid out so the board is vertical in a 1590B oriented like the original.

Got a request for an active DI, which coincided with a project I'm working on, so it seemed like a good idea. This one's designed by Samuel Groner and modified by Jack Orman. The schematic came from his blog and can be found here, along with some other info about the circuit.

The EchoPlex Preamp emulates the input stage on the old EchoPlex EP-3. It provides up to 11dB of gain and is mostly used as an always on pedal to sweeten the user's tone. If you want to add the volume control, use a 500k pot and connect lug 1 at the junction of the 100n cap, 220k and 100k resistors, and run lug 2 to ground. This also works really well when running at 18v. Schematic for reference can be found here.