The Green Tremolo

Posted on February 13th, 2016

Top view of the Green Tremolo

Left side view of the Green Tremolo

Left side view, showing the exp/rate control and output

Bottom side view of the Green Tremolo

Bottom side view of the Green Tremolo

Right side view of the Green Tremolo

Right side view, showing the input

Top side view of the Green Tremolo

Top side view of the Green Tremolo

Bottom view of the Green Tremolo

Bottom view of the Green Tremolo

Inside view of the Green Tremolo

Inside view of the Green Tremolo

Part way through covering the Green Tremolo

Part way through covering the Green Tremolo

I built this tremolo a while ago but only got around to finishing it off this week. I have done a few stamp pedals in the past, I really like the effect and find each stamp interesting. I always like to think one of them is worth a lot of money and I just stuck to a pedal. It’s quite a labour intensive process and it takes quite a few layers of clear coat to protect the surface, which often leads to a slight discolouration. However, I think this adds to the pedal and makes it look slight aged. All the stamp are East Germany era stamps. I have added labels written using a type writer.

The pedal is a Fuzz dog EA tremolo which I have adapted to allow an external rate control. The LEDs (a lovely emerald green) blinks with the speed of the tremolo with some modifications to the 3PDT daughter board.

Pedal Screen Printing

Posted on June 15th, 2015

This weekend I finished off a couple of enclosures. I used a plastic thermofax screen to print designs onto pedal and I was really pleased with the results.
This type of screen is normally used for fabric printing, but I was impressed with the result. When printing on fabric an extender is often used to thin fabric inks and allow them to pass through the screens. I did experiments with fabric inks and acrylic paints and came to the conclusion that adding extender caused the ink to smear and bleed. Normally would be absorbed into the fabric. I found the using acrylic paints without any extender I was able to minimise the ink smearing.

The results of my thermofax screen printing

DIY Volume Pedal (Updated)

Posted on May 2nd, 2015

I finally built my ‘drop-in’ DIY volume pedal circuit. The circuit can be plugged directly into a Dunlop Cry Baby. However, the potentiometer in wah pedals uses a different taper, ICAR I believe. Because of the way the human ear responds to sound a logarithmic or audio taper is preferred but existing wah pots will work.

I have included a circuit a strip/vero board layout.

DIY Volume pedal

Posted on April 26th, 2015

A couple of the wires on my wah had broken so I needed to re-wire it. Recently I had been thinking about modifying the wah into a three in one wah/volume/expression pedal. Since I had to re-wire it anyway I took the opportunity to build a volume pedal.

I put together a circuit with a simple buffer, using the wah pot as a volume. I also added a DPDT toggle switch to bypass the buffer.

DIY Volume pedal

The circuit needs a bit more work. Currently with the toe down the signal is quietest and with the heel down the signal is loudest. It feel better if the volume operation was inverted.

The White Klon

Posted on February 28th, 2015

So I wanted to see what all the fuss for the Klon was about. This was the first pedal I have built for a while. I didn’t want to buy or etch a PCB and I kept finding links to tagboardeffects so I bought the components and set to work over the New Year.

The vero board layout mentioned that it might be a squeeze to get the layout inside a 1590B so I took that as a challenge. I ended up using a Hammond Eddystone enclosure which is slightly smaller than a 1590B so I was glad I managed it.

I kept a white colour scheme using white knobs and DC jack along with an ultra-bright white LED.

The White Klon

Since space was limited a 3PDT might not have fitted. I liked how I had mounted the LED to the footswitch when I built my prototype pedal. So I mounted the LED and a millennium bypass circuit to the DPDT footswitch.

An inside view of the Klon


Posted on August 27th, 2014

When I’m building pedals, I often start by trying circuits out on a breadboard. One thing I have always struggled with is off-board components. One option is to add plug potentiometers directly into the breadboard but I often find the components don’t stay in the breadboard. The second option is to wire the off-board components up but I find this a bit messy.

A few years ago I saw the ZVex Inventobox. The idea was to create a pedal that would allow people to experiment. So inspired by this pedal I decided to come up with my own design.

The DistoFX prototype pedal

The enclosure is built using two Hammond 1590B enclosures. All the potentiometers, switches and jacks are located in the bottom half of the enclosure with a breadboard located in the upper half of the enclosure. The bottom half of the enclosure can be access through holes in between the two halves. The footswitch is a DPDT switch with a GeoFex millennium bypass. (more…)

Disto Noise Gate

Posted on July 11th, 2009

This is an idea I’ve been playing with for a while, this quick video shows the trigger stage of the noise gate. The gate ‘open/close’ is indicated by LEDs. The trigger circuit needs some adjustments but is working fairly well.

PT-80 Delay self-oscillating

Posted on May 16th, 2009

This video was made upon request and demonstrates the PT-80 delay self-oscillating and going into feedback.

Boss CE5 Chorus Ensemble

Posted on March 28th, 2009

I made this video, a demo of the boss CE-5 chorus, a while ago but never actually posted a link to it here. So here it is.

It’s a bit busy at the moment, but hopefully I’ll add some updates soon.

Inside An Electro Harmonix Big Muff

Posted on September 19th, 2008

I made this video a few months ago but never got around to putting it on here. The video shows the waveforms of the big muff at various points in the circuit, using an oscilloscope.