Random Number Generator

This is Midfi Electronics “Random Number Generator”. It’s a radical fuzz that adds oscillation notes that randomly arpeggiate off of the fundamental note played. Crazy noise maker pedal. I’ve built several of these now by request. The owner of the design over at Midfi was gracious enough to share the schematic on the DIYstompboxes forum which is why I want to make it clear that this is NOT my design, and if you get one for me you are strictly paying me to make a clone since these aren’t available anymore.

This is the first one of these I’ve built. I added the mods of changing a 100k resistor with a pot, and a diode that is switched into the circuit, but quite frankly they don’t do a whole lot. Any others of these I build will just have the volume knob as original intended.


The Uglyface effect is an oscillation based distortion/fuzz pedal with envelope controller designed by Tim Escobedo. It can do a wide varitey of off the wall sounds (laser guns, bagpipes, drones), and it has many different ways to modify the circuit. I’ll liked it so much I built it into one of my old junker guitars (details below).

This is the first Uglyface I’ve built. I built it into some crazy electronics box with huge heatsyncs on the sides. Seemed to fit the circuit some how lol. I did the standard controls of Volume, Threshold, Frequency, and Sensitivity, and added a mix control that worked ok.

I had this old guitar knocking around for a while, so I decided to mount an Uglyface inside of it. It has all the same controls as the pedal above, but I also added a Light Sensor with switch for controlling the frequency knob.

Build Your Own Clone Assembling

After building a couple of their pedals for myself I’ve decided that if there’s anyone out there that wants a B.Y.O.C. pedal, but doesn’t know how to solder, that I will build them for you for a fee. It will be the cost of the pedal on the B.Y.O.C. site, plus a $40.00 to $60.00 build fee depending on the level of difficulty. That will be for a bare box, if you want it painted then we can dialog about the cost of that.

B.Y.O.C. has clones of some of the most famous pedals out there (Fuzz Face, Big Muff, Tube Screamer, etc) that come with the highest quality parts. On top of that most are true bypass, and several of the pedals come with additional mods that stretch out the versatility of the pedal futher (I have the “Rat” clone that has a 5 way rotary switch for 5 different clipping options).

Here is the main page for B.Y.O.C. You’ll find a list of the clones they make here, and if you are interested in having one built by me, then send me a line through the contact page here