125B · 3 knobs
Ground Fault
Based on the Fuzzhugger Fx Arc Flash· 2 other boards clone it
- Category
- Fuzz
- Price
- see vendor
- Tags
- not verified, gerbers, faceplate, CC BY-NC-SA 4.0
From the vendor
Ground Fault is a clone of Fuzzhugger FX's Arc Flash pedal that is, sadly, out of production. The trace is from the user Almondcity on the PedalPCB forums. The changes I've made to the trace are more filtering on the DC input and simplifying the coupling between the two transistors down to a single capacitor (see the notes), otherwise it is as presented in the trace. You can learn a little bit more about the circuit here and here.
Built

Schematic
Drawn by Cryptid Effects, CC BY-NC-SA 4.0. Gerbers and faceplate on GitHub.
Parts list 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| R1 | 1M | 1M | ||
| R2 | 100k | 100k | ||
| R3 | 100k | 100k | ||
| R100 | 4k7 | 4.7k | Current limiting resistor, choose to taste | |
| Capacitors 6 | ||||
| C1 | 33nF | 33n | Film | |
| C2 | 10u | 10u | Electrolytic | |
| C3 | 2u2 | 2.2u | Electrolytic | |
| C5 | 100nF | 100n | Film | |
| C7 | 100nF | 100n | Film | |
| C100 | 100u | 100u | Electrolytic | |
| Diodes 2 | ||||
| D2 | 1N34A | 1N34A | ||
| D100 | 1N5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | 2N5089 | 2N5089 | ||
| Q2 | 2N5089 | 2N5089 | ||
| Potentiometers 3 | ||||
| Gain | B500k | B500k | Potentiometer | 16mm right angle pot |
| Frequency | A250k | A250k | Potentiometer | 16mm right angle pot |
| Volume | A100k | A100k | Potentiometer | 16mm right angle pot, labeled LEVEL on the faceplate |
| Switches 1 | ||||
| Mode | DPDT | DPDT | Switch | On / On |
| LEDs 3 | ||||
| D1 | LED 5mm red | LED 5MM RED | ||
| D3 | LED 5mm red | LED 5MM RED | ||
| D101 | LED 3mm | LED 3MM | Status LED, pick your poison | |
Other boards based on the Fuzzhugger Fx Arc Flash
- Fuzzhugger Fx Arcflash Dirtbox Layouts
- Lightning Strikes Fuzz Dog · 1590B · £28.80