Audio & music
Haxo hw
by cardonabits
Haxophone, an electronic musical instrument that resembles a saxophone
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Haxophone, an electronic musical instrument that resembles a saxophone
by 30350n
PCB panels for Mutable Instruments eurorack modules
by LOM-instruments
Elektrosluch 3+ • electromagnetic listening device
by hkzlab
Sound Card for the ISA (8bit) bus sporting Sound Blaster / Sound Blaster PRO emulation via ES688F chip, and a real Yamaha OPL3 FM Synth. It's also completely jumper configurable.
by gyrex
1.3GHz HD Digital Video Distribution Project for FPV
by TheSlowGrowth
Alternative panels for Mutable Instruments modules
by sparkfun
Prototyping board combined with the fundamental parts of a guitar stompbox.
by ohdsp
Open Hardware DSP Platform - Class D Amplifier TDA7498, TDA7492 PCB design - Open Source Hardware - Untested
by stefaweb
The Q17 is an error correction HIFI amplifier based on the QUAD405 current dumping principle.
by DIYSynthMNL
A multi saturation module with voltage controlled wet/dry mix
by AShadyPCB
Silent 25 kHz H-bridge replacement for a whining 24V tunable white/orange LED shelf controller. STM32 + BLE, reverse engineered from the original, with scope and audio FFT documentation.
by OpenDrone-hw
Open-source FPV video transmitter hardware. Part of the OpenDrone ecosystem.
by KabukiFlux
MiSTer user port MIDI output and input PCB
Every project listed here belongs to its author and is linked to its original repository. Licences are read from the repository metadata and summarised for convenience — check the licence file in the project itself before you manufacture or redistribute a design. ProtoFlow does not host, mirror or verify these files. Index last rebuilt 2026-09-21.