Trip Hazard 2 Disruption Pedal

 Info about the circuit at FSB and an updated schematic HERE.

Bluff Chill Devices Shagpile V1

 Here is a very interesting and not overly complicated PT2399 based circuit from Bluff Chill Devices. It is an "envelope modulated delay" which sort of emulates a worn out tape delay.

This layout is for V1 only but there is two layouts; one for stock 2 knob version and one modified 4 knob version. See details for the latter further down of this post

First up the schematic and a writeup about possible mods at the Bluff Chill blog.

 

And the modified version with added Mix and Realese controls. Note that pot values and lug connections isn't mentioned in the blog post so some tweaking is necessary to get satisfying results. I added the values that "should" work...

 *Edit* Jordan verified the modified layout bellow and tested pot values and tapers.

 

Later versions also had a feedback control and an improved blend circuit but there is no schematic avaiable for it on the web...
 

Ethos TWE-1

Based on schematic from PedalPCB.

 

 

 

Benson Preamp

 Schematic and suggested trimput setup at PedalPCB.

Shin's Music Dumbloid

 

Electro Harmonix Ripped Speaker Fuzz

 Schematic is avaiable at PedalPCB

Tape Saturator Diode Compressor - Op Amp version

 A request by KG who also provided lots of useful information and a schematics for this. A bit more simple version of the DIYRE Tape Saturator circuit using op amps and there is no need for a rack circuitry. 

The circuit is supposed to run on 16v / -16v so there is an onboard bipolar voltage doubler although it only gives out around 15v /-15v but it is close enough. 

Info about the circuit HERE.

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Beetronics FX Fat Bee

 Per another "request" from Portugal....:-P.

Schematic is avaiable at PedalPCB,

Greer Sucker Punch

 Another request, a close relative to DAM Sonic Titan.

DIYRE 15IPS Tape Saturator Colour Mk. II

 This was a request and offers something quite different.... it is a tape syle diode compressor. Notice that it runs on 16v biploar power so if you want to power it with normal 9v, a bipolar volatge doubler daughterboard can be used.

 *Edit* 270421. Now verified and I got some reports it works perfectly fine using a simple FET Booster up front.

Schematic and info is avaiable HERE. 

Greer Tomahawk Deluxe Drive

 Requested by a gentleman from Portugal.:-)

Schematic is avaiable at PedalPCB.

EarthQuaker Devices Tone Job

 Schematic is avaibale HERE.

And product description and eq curves HERE.

DAM FS-77 Fuzz Sound

 Andy at the most excellent layout and resource blog Vero & Point-2-Point Layouts traced this interesting tonebender variant a few months ago. It is a tweaked Tonebender Mk. III/IV with an input cap blend control and a Big Muff tonestack with odd values. Schematic and tracing jornal is avaiable HERE.

*EDIT 220429* Andy discovered a mistake in the trace regarding the function of the Balance control. Layout is updated. LINK

 

 

Mad Professor Sweet Honey Overdrive

 

Fuzzrocious Ram the Manparts

 

Lell EP Parametric Equalizer

 A 3 band parametric eq from the Soviet Union, anyone? Electronic switching is removed and op amp is altered for normal 8 pin DIP package which replaces the odd dual op amp 14 pin DIP package.

As for R28 which is connecting across the output of the last op amp and ground, the schematic simply says "100". Could be iether 100 ohm or 100k but 100 ohm seems a bit low?

 

Upsate 260712. R28 confirmed to be 100k. 

 

 

 

EWS FD-1 Fuzzy Drive

 Based on Seamoon Fuzz (...and Black Cat OD-1). An op amp clipping fuzzy overdrive with an active tonec ontrol tacked at the end. Note that the schematic have a few typos; the 470nF caps is actually 47nF according to some gutshots but 470nF might work for the bass players out there...

 

 

 

Pearl PE-10 Parametric EQ

 Schematic is avaiable HERE.

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Electro Harmonix Frequency Analyzer - Modern version

 The modern version of EHX Frequency Analyzer. The ICL8083 IC is obsolete but there is still some vendors that have it in stock. Came out taller than expected since I wanted the bipolar voltage doubler circuit on the same board as the main circuit. But it will fit sideways in a BB enclosure...

Schematic is avaiable HERE.

 

 

 

Frantone Vibutron

 Per request. Included the "Rate mod", a switch that toggles between two speed settings..

Schematic and info HERE.