Some items may be out of stock temporarily as we get caught up after the holidays. We are building more inventory and restocking each week, so be sure to check back.
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AVAILABLE EARLY 2026, PRICE TBD
We are finalizing the product and expect to start taking orders in mid-January 2025.
The OFMG (Open-firmware, modular guitar) is designed for reliability, performance, and long-life. Using our years of experience with replacement strummers and frets for standard Rock Band guitars, we set out to make our ideal guitar which is not only compatible with most platforms and games today, but can also be easily repaired, modified or upgraded with more features and compatibility in the future.
Key Features:
Available in “mini body” version with a short neck (with 5 fret buttons), or as a “full body” version with a full-sized, wood paneled body and 2 sets of fret buttons (10 frets total).
Custom colors and finishes can be ordered. Full body version can be supplied with unfinished birch wood panels so you can paint/stain however you wish.
Strum mechanism with sealed ball bearings for smooth action without any loose play.
Dual/split strummer (bass guitar style) option is available.
Low-latency USB C cable connection with magnetic release for connecting to console or PC.
User-replaceable switches for strummer - no soldering required. Use with any Cherry MX-compatible keyboard switch.
Programmable LEDs on all fret and strum switches. Frets glow softly with corresponding note color and light up when pressed.
Large overdrive button with “guard” to prevent accidental activation.
3.5mm port for connecting a foot pedal to activate “overdrive”.
Frets use low-profile, long-life, mechanical keyboard switches.
Raspberry Pi PICO2 processor, installed in a socket — can be replaced/upgraded by the user.
USB A port for connecting an “official” controller to perform “authentication” when required (e.g. for Xbox).
OLED display for displaying status, diagnostic messages etc… (requires compatible firmware).
Open source firmware. Currently supports the Santroller firmware, the GP2040CE firmware (GP2040CE guitar support is still preliminary), and our own custom firmware (currently under development). Firmware can be written in C/C++, Python (CircuitPython is recommended), or a variety of others.
Replacement strummer for compatible Rock Band guitars. This is the non-LED version with a solid-color strum bar.
Medium travel (more than the StrumFix Plus 2), with fast action that snaps back to center when released.
Uses 4 low-profile, long-life mechanical keyboard switches.
Reliable, solderless screw-terminals for connecting to guitar’s existing wiring.
Custom strum bar colors are available on request.
Replacement strummer for Rock Band guitars with translucent strum bar that lights up when strummed.
Medium travel (more than the StrumFix Plus 2), with fast action that snaps back to center when released.
Uses 4 low-profile, long-life mechanical keyboard switches.
Red and orange LEDs (red for down, orange for up). Custom LED colors are available on request.
Replaceable (LR44) batteries, can be replaced without opening the guitar.
Dual independent strummers, for more realistic action especially for bass players. Jumpers on the circuit board can be used to select how the strummers behave (up/down/split).
Uses the same switches and has the same travel as the StrumFix Plus 2.
Short-travel strummer replacement.
The Strum Fix Plus 2 is a replacement strummer mechanism with a short-throw and positive but subtle 'click' when activated, you no longer have to 'mash' the strum bar and can play faster, more accurately, longer, and with less fatigue.
Features
Each Strum Fix Plus 2 comes fully assembled, ready to install, and includes:
2-layer circuit board with screw terminals for connecting wires.
Long-life keypad switches with tactile feedback (a click that you can feel, but barely hear).
3D printed plastic strum bar and hinge brackets. Parts are printed using sustainable, non-petroleum-based PLA plastic.
Dual centering springs.
30-day, no questions asked returns. 6 month warranty on parts.
Replacement PCBs (with switches) for the frets on a compatible Rock Band guitar.
Includes:
Includes 2 PCBs with switches installed — 1 for the main fret buttons, one for the smaller “solo” buttons.
Tactile, mechanical switches which replace the rubber “dome” switches on the original.
Double-side, plated-thru PCBs are higher quality, thicker and less prone to flexing than the originals .
Includes snap on spacers to set correct distance from boards to fret buttons (only needed on some guitars).
Installation is reversible - you can re-install the original PCBs (requires re-soldering the wires).
NOTE: Installation requires disassembling the neck and soldering wires.
This adapter is needed to install a Strum Fix (any version) in a PDP Riffmaster Rock Band guitar. It makes it so the Strum Fix sits in the guitar properly and still allows the neck to be folded.
Includes:
adapter body
two spacers
plate for holding ribbon cable in place
Use this adapter if you are installing a Strum Fix (any version) in a Rock Band Jaguar guitar. This adapter is NOT mandatory, but is needed if you want to preserve the ability to fold the neck.
Includes:
SLA-printed (resin) adapter.
Short wire for connecting strum signal.
