INPUT ONE
BUFO BUFO
/// EURORACK MODULE
Bring swampy, organic grit to your Eurorack system. Here you can download the complete Gerber files to build the BUFO BUFO—a vactrol-based Sallen-Key low-pass filter. This module blurs the line between a resonant VCF and a classic low-pass gate. Driven by sluggish optocouplers and pure analog circuitry, it delivers fat bubbling, biting resonance, and the ultimate acid toad effect. Grab your soldering iron, embrace the mud, and start building. Completely free download.
Frontpanel V 1.1
Mainboard V 1.1
INPUT ONE
LUX
/// EURORACK MODULE
Bring ambient light and shadows into your Eurorack system. Here you can download the complete Gerber files to build the LUX—a passive photoresistor module for creative, hands-on control. This clever circuit acts as an organic attenuator and optical gate without consuming any power. By simply covering the LDR with your palm, you can throttle LFOs or chop gates live. Grab your soldering iron, embrace the ambient chaos, and start building. Completely free download.
Frontpanel V 1.0
Mainboard V 1.0
INPUT ONE
ATTENUATOR
/// EURORACK MODULE
Tame your wild modulation signals without using power. Here you can download the complete Gerber files to build the Triple Passive Attenuator. Is your LFO too aggressive, tearing your filter cutoff apart with every cycle? This passive module acts as a simple volume knob for your control voltages. No magic, just pure physics. It requires absolutely no power from your bus board—just potentiometers wired between input and output jacks. Grab your soldering iron, print the boards, and take back control. Completely free download.
Frontpanel V 1.0
Mainboard V 1.0
BUILD GUIDE
TUTORIALS
GHOSTIX LABORS
DOWNLOAD /// DIY GUIDES
TUTORIAL
00
/// GHOST PROBE
Protect your circuits from the magic smoke. Here you can download my very first tutorial: a guide to building "The Ghost-Probe". This essential DIY tool warns you of critical short circuits while circuit bending by instantly lighting up. Built from everyday trash like transparent ballpoint pens and a fuse, it acts as a physical safeguard between your bend points. Strictly for battery-powered devices up to 12 Volts. Download the PDF, scavenge your desk, and learn to improvise. Completely free download.
TUTORIAL
01
/// SIMPLE LFO
Build your first oscillator without a proper circuit board. Here you can download the guide for "The Cardboard Circuit". This raw DIY tutorial proves that you don't need professional etching gear to create electronic life. All you need is some cardboard from an old college block, solid core wire, a 555 timer IC, and some basic tools to build a fully functional Low Frequency Oscillator (LFO). Complete with printable templates, this guide teaches you true resourcefulness. Grab your soldering iron and improvise. Completely free download.
TUTORIAL
02
/// ATARI PUNK CONSOLE
Build the legendary Atari Punk Console without a proper circuit board. Here you can download the guide for "The Cardboard Circuit Issue 02". This raw DIY tutorial shows you how to build the classic lo-fi synthesizer using nothing but cardboard, solid core wire, and two 555 timer chips. You don't need professional etching gear to make some noise. Learn how to wire this iconic machine from scratch and generate those gritty, vintage video game sounds. Grab your soldering iron and improvise. Completely free download.
TUTORIAL
03
/// KEYBOARD & LFO
Take your Atari Punk Console to the next level. Here you can download the guide for "The Cardboard Circuit Issue 03". This raw DIY tutorial shows how to build a resistor-based keyboard and an optical Vactrol filter using just cardboard and wire. Learn to craft an optocoupler from an LED and a light-dependent resistor to modulate your sound. No switches? Build a touch keyboard using metal washers and a banana plug. Keep your cash, dig the trash, and start soldering. Completely free download.
TUTORIAL
04
/// 8 BIT SEQUENCER
Turn your Atari Punk Console into an autonomous space machine. Here you can download the guide for "The Cardboard Circuit Issue 04". This raw DIY tutorial shows how to build a functional 8-step sequencer using nothing but cardboard, solid core wire, a 4017 IC, and a 555 timer. Learn to wire LEDs, create a reset switch, and implement a hidden "Ghost Key" to transpose your running sequence. Expand your lo-fi synthesizer without a printed circuit board. Grab your soldering iron and improvise.
TUTORIAL
05
/// EFFECT PEDAL
Build your own analog effect pedal without a printed circuit board. Here you can download the guide for "The Cardboard Circuit Issue 05". This DIY tutorial shows how to build the "Purple Hills Pedal" out of cardboard, solid core wire, and two 2N3904 transistors. Learn how to implement a bypass switch and how to hook up external CV (Control Voltage) inputs to your Atari Punk Console for heavy pitch modulation. Grab your soldering iron, keep your cash, and dig the trash.