FM-1 firmware · 0.11
PurpleMonkey
A first instrument for toddlers: any key plays pentatonic FM notes and drums over a beat, with four animal friends dancing on screen.
- Made by
- Quixotic7
- Released
- October 10, 2026
- Install
- On the FM-1 Firmware Hub · source on GitHub
- Scan
- Scanned, nothing harmful found · Oct 31 What we checked
- Last checked
- October 31, 2026
What PurpleMonkey does
- Press any key for six-operator FM notes on a pentatonic scale, synthesised drums and a backing beat.
- SYNTH climbs C major pentatonic over three octaves, and the pet sings each press back a bar later.
- DRUMS gives nine sounds three times over, and a held key repeats it on the clock in its own rhythm.
- PLAY runs a two-bar pattern per pet under a four-bar chord round with a bass note.
- KNOB 1 to KNOB 4 are TONE, WOBBLE, SPACE and LENGTH in SYNTH, SPEED, BUSY, BOUNCE and SQUISH in DRUMS.
- SOUND steps a bank of sixteen voices, SELECT swaps the pet and its kit, WORLD changes the scene.
- There are no menus and nothing to save, and a MIDI keyboard on USB or the TRS jack plays the pet's voice.
Its modes
- DRUMS
- The keys play nine drum sounds three times over, and a held key repeats its sound on the clock.
- SYNTH
- The keys play rising pentatonic notes that the pet echoes, blooms and runs over.
- BEAT
- PLAY starts and stops the pet's two-bar backing pattern with its chords and bass.
- PET
- SELECT steps round Monkey, Cat, Dog and Llama, each with its own kit, pattern and sound.
- KEYS
- The keys play the scale with the echo, blooms and runs.
- TUNE
- Any key plays the next note of a nursery tune, and pressing again steps to the next tune.
- SOUND
- PRESETS steps through a bank of sixteen synth voices, four for each pet.
- WORLD
- ALGORITHM moves between night, sea, balloons, space, meadow and snow on screen.
What Les checked
PurpleMonkey v0.11Scanned October 31, 2026
What we checked for
- The file is exactly the one its author published
- It's the same file we saw when this release first came out
- It opens cleanly as an FM-1 firmware, nothing damaged
- It doesn't show up on your computer as a keyboard, mouse or other input device
- It doesn't show up as a USB drive or network adapter
- Its text mentions no computer command tools, like PowerShell, Terminal or a download command
What we found
- MIDI and audio, as expected
StatusScanned, nothing harmful found
Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware
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