I made a Morse code app for Flipper Zero and it got slightly out of hand
I made a Flipper Zero app for Morse code. It started as "can I make the orange brick do telegraphy properly?" and then got slightly out of hand.
The first trick is Flipper-to-Flipper Morse: send from one Flipper, receive on another. Pocket secret-message machine. Utterly unnecessary, which is half the charm.
It is also useful if you want to get better at ARG games, beat the timer in escape rooms without crawling back to the Morse lookup table, become suspiciously useful at Keep Talking and Nobody Explodes, get through scouting signal-badge stuff, or just finally understand what that random bit of Morse in cartoons and old films is actually saying. Or maybe you want to become a ham radio operator: low quality voice chat where the ionosphere decides what medical conditions you'll talk about next.
What it does:
- Flipper to Flipper Morse
- listen-and-repeat exercises
- straight-key timing practice
- sending drills
- real telegraphic key or paddle over GPIO
- USB telegraphy adapter mode for specialised practice sites and games (keyboard, mouse, and MIDI output modes)
- smooth audio out on P2 if the buzzer starts doing your head in
- built-in help/manual for learning without memorising Morse as dot-and-dash inventory
- ham radio field mode with canned messages, rig keying, PTT, and logging
The first hardware adapter is just a 6.5 mm jack soldered to header pins. No PCB, no ceremony, just a small ugly hack that works annoyingly well. You can use the Flipper buttons, but a real key feels much better and is more fun to build.
BENS BEST BENT WIRE is a common telegraphy test phrase: the Morse equivalent of scribbling loops and those suspiciously round capital-A shapes when testing a pen.
Video attached, code and release here: