MIDIMON0.5 · beta

0.5

• The newer FM-1s (sold since autumn 2026, mostly from AliExpress) have another flash chip, a UC25HQ80 (JEDEC B36014) instead of the Puya P25Q80 (856014). MIDIMON 0.4 and older took them for unknown: settings were not saved and no firmware could be installed from MIDIMON. fm1-base now takes both (Laurens, fm1-base#35), and MIDIMON is built on it (fm1-base 317cb86). An FM-1 with that chip stuck on an older MIDIMON goes back to stock first (through the chip's own update mode: felucca-bsp's tools/fm1_rescue.py, or M-Flasher), then takes this one.
• On a current fm1-base: the USB MIDI host is upstream's now (felucca-bsp's pull request #7, merged), and the firmware installers' faster install (only the changed sectors) comes with it.
• A site: https://ignis32.github.io/midimonitor_fm1/, with the web installer and the firmware in the browser. The installer offers m-bootloader 2.2 (fm1-base's carries 1.2, which stops at BAD CONFIG after stock V16 and after which one FM-1 with the newer flash did not start). Hold PLAY at power-on for its menu, whose MIDI MODE reinstalls a firmware from a browser.
• firmware.json for firmware hubs.

0.4

• USB name back to MIDIMON FM-1: 0.3's FM1_MONITOR on USB lost the "FM-1" the firmware installers look for. Bluetooth stays FM1_MONITOR.
• Battery on GLO 1/3: a percentage (an estimate), a bar, the volts and the raw reading; the reading now follows the battery (fm1-base's average stopped moving within 15 of its first value until the next power-on).
• Scanlines moved to GLO 3/3 (K3); K3 on the LOG tab is free.

0.3

The FM-1 as FM1_MONITOR. It shows up under that name on USB and on Bluetooth (was "MIDIMON FM-1" and "FM-1").

USB host mode (new): the USB-C port can host a class-compliant USB-MIDI controller or synth instead of talking to a computer: GLO 1/3, K2 (it asks first). What the device sends is logged as USB, and USB out goes to it, THRU included: a Bluetooth controller can play a USB synth with no computer around. Full-speed devices, alone or behind one hub; the FM-1 gives no power on the port, so a powered hub or an OTG adapter that powers the device is needed. Never kept: every power-on is device mode again, so updates always work. The driver is Adrien Tibi's and Kerem Kilic's (Melodee), from felucca-bsp's pull request #7, under MPL-2.0 by their word (LICENSING.md).

A BLUETOOTH page (GLO 2/3):

• BLE-Periphery on / off (a computer or tablet connects to the FM-1).
• BLE-Central OFF / FIRST / CHOOSE: FIRST connects to the first MIDI device it sees (and again when that one goes); CHOOSE to the one picked from a list (K3) that shows each device's name, the last four digits of its address and its signal. In the list: SELECT or K3 move, OCT+ connects, OCT- goes back, PLAY scans again.
• RECONNECT: back to the chosen device at power-on and whenever it goes (found by its address).
• Both links' state on the page. The radio is off only when both roles are.

GLO is three pages: 1/3 note 60 and the USB port, 2/3 Bluetooth, 3/3 the skin and the platform's SysEx.

HOME goes home: to the LOG tab from any page, then from KEYS, CC, CHANS or CLOCK to the log itself; only on the log does it ask to clear it.

Words: USB is in DEVICE MODE or HOST MODE; Bluetooth's roles are BLE-Central and BLE-Periphery, BLE-C and BLE-P where space is short.

Under the hood: fm1-base is now a git submodule (fm1-base/, felucca-bsp inside it) at its latest commit, used as upstream has it; MIDIMON's few changes to it are patches in patches/, so upstream updates come in easily. Upstream already had the Bluetooth link handling MIDIMON 0.2 carried itself.

Note: the settings are kept in a new form: after this update the FM-1 starts once from the defaults (BLE-P on, BLE-C CHOOSE, RECONNECT on, THRU off). Set things up again and SAVE.

Install over MIDIMON, the stock firmware or another custom firmware (tested over Felucca and fm1-radio).

0.2

The LOG tab's views on ALGO: KEYS (notes held per channel, a zoomed keyboard with velocity and poly pressure, double note-ons and note-offs without a note-on counted), CC (bend and channel pressure graphs, the controllers last moved in rows that stay put), CHANS (activity per channel and source, each channel's last message), CLOCK (tempo, transport, position, song position, clock spacing, MTC).

0.1

The first release: the log (HEX, HUMAN, BOTH), FILTER, STATS, THRU with per-route filters, GLO, skins; USB, the TRS jack and both Bluetooth roles at once.

CHANGELOG.md on GitHub ↗