Desktop app for controlling Sony BVM CRT monitors over RS-422, replacing the physical BKM-10R controller unit.
Pre-built binaries are available on the Releases page.
| Platform | Format |
|---|---|
| macOS (Apple Silicon + Intel) | .dmg |
| Windows | .exe installer |
- Sony BVM-14F1E / BVM-14F1U
- Sony BVM-14E1E / BVM-14E1U
- Sony BVM-14F5E / BVM-14F5U
- Sony BVM-20F1E / BVM-20F1U
- Sony BVM-20EF1E / BVM-20EF1U
Any Sony BVM that uses the BKM-10R controller unit should work.
- USB to RS-422 full-duplex adapter (FTDI-based recommended)
- DB9 male connector wired to the BVM's RS-422 port
- 5-wire connection: RX+, RX-, TX+, TX-, GND
Never connect pin 5 (+5V). Always plug and unplug the DB9 cable with the monitor powered off.
The app includes a built-in pinout diagram (click the info button) it's easier to follow so I recommend you look it up there. For reference, the official pinout is documented in the Sony BVM service manual.
| DB9 Pin | BVM signal | Adapter wire |
|---|---|---|
| 1 | GND | GND |
| 2 | -TXD | TX- |
| 3 | +RXD | RX+ |
| 4 | GND | GND |
| 5 | +5V | do not connect |
| 6 | GND | GND |
| 7 | +TXD | TX+ |
| 8 | -RXD | RX- |
| 9 | GND | GND |
npm install
npm run dev # development
npm run package # build distributableRequires Node.js 18+.
- Knobs may not work sometimes.
- LED state is received for button groups 2-4 only. The power LED state is not reported by the monitor over RS-422.
MIT