Alber e-motion M25
Power-assist drive wheels for manual wheelchairs. Bluetooth-controlled, AES-encrypted protocol.
Sold as e-motion and e-motion DuoDrive. Same hardware, the DuoDrive variant is a config flag plus an additional hardware remote (fun fact: the remote is identical to the remote control of the smoov O10 device). Everything here applies to both.
As of 2026 we know of three hardware revisions of the M25. The differences and quirks of all of them are not yet fully understood by us, but we’re on it atm.
Device documentation
Section titled “Device documentation”Hardware, protocol, repair, and reverse engineering notes.
- Protocol: wire format, services, commands, encryption
Software for talking to the M25.
- Installation: setup, dependencies, encryption key extraction