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Add YO3GND and allocate 5 PIDs for 3 projects - #1261

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Add YO3GND and allocate 5 PIDs for 3 projects#1261
yo3gnd wants to merge 1 commit into
pidcodes:masterfrom
yo3gnd:pid-6904-fmtx

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@yo3gnd yo3gnd commented Aug 17, 2026

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Requesting five PIDs for three separate GPLv3 firmware projects using off-the-shelf hardware:

  • 1209:6904 - Flipper Zero FMTX: a Flipper Zero app exposing a USB Audio Class speaker and transmitting the received audio through its internal or an external CC1101.
  • 1209:6903 - Digistump MIDI-Vail Telegraphy adapter: V-USB MIDI firmware for a Digispark/ATtiny85, connecting telegraphy paddles or a straight key to Vail.

  • 1209:6900 - Morse Flipper Telegraphy Adapter - Keyboard (https://github.com/yo3gnd/morse-flipper)
  • 1209:6901 - Morse Flipper Telegraphy Adapter - Mouse
  • 1209:6902 - Morse Flipper Telegraphy Adapter - MIDI

Morse Flipper provides keyboard and mouse as separate compatibility modes because telegraphy software varies considerably in how it accepts keying input, particularly older applications. Both modes use the Flipper Zero’s composite HID interface, but only the selected input path is active. Separate PIDs prevent one VID/PID/serial identity from changing behaviour underneath cached device names, permissions and application bindings when the mode changes. A single PID would work for ordinary HID enumeration, but would lose that stable per-mode identity.

All repos contain the corresponding USB implementation and requested VID/PID. The Digispark repository also documents the complete hardware side: a trs socket wired to three pins. FMTX runs on a Flipper Zero, with an optional off-the-shelf CC1101 module. The Morse Flipper has schematics for its adapter.

@yo3gnd yo3gnd changed the title Add YO3GND and allocate PIDs 6903 and 6904 Add YO3GND and allocate 5 PIDs for 3 projects Aug 17, 2026
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