unu · Scooter Pro

Scooter Pro

What makes the Pro distinctive

The unu Scooter Pro was the second generation of the unu scooter, shipping from 2021. Unlike the previous model, it's a standalone design with a built-in 4G modem, GPS, NFC reader, keyless operation via keycards or app, and a smartphone app (non-functional today). Three motor variants existed on paper (2 kW, 3 kW, and 4 kW peak power); the 2 kW variant only appeared as a 25 km/h moped-class test vehicle and was never sold to customers. The variants that actually shipped were the 3 kW and 4 kW peak, both registered as L1e-B class (45 km/h, AM license; automatically included with a German class B car license). The 4 kW variant has roughly 2.7 kW continuous output.

Hardware at a glance

• MDB (Middle Driver Board). Main control unit, ARMv7-based, runs Linux. Handles the modem, GPS, NFC, BLE coprocessor, and the interfaces to all other components.
• DBC (Dashboard Cluster). Display unit on NXP i.MX6DL with a 480x480 display. Originally display-only; upgraded to a full UI platform with librescoot.
• ECU. Motor controller on the Lingbo platform, with unu-specific Bosch programming. Communicates over CAN bus.
• Batteries. Two swappable main batteries, one additional AUX battery (onboard electrical system, frequently defective) and a CBB (Connectivity Battery, powers the modem on standby).
• SIM. MFF2 (soldered industrial form factor) on the MDB. No longer active after the original cloud was shut down.

Current software status

Without any intervention: the scooter rides, the display shows speedometer and battery levels, the steering lock works with a keycard. No longer available: GPS positions, sharing, remote control via the app, and OTA updates from unu. Adding or removing keycards is also off the table: the keycards themselves are stored in the MDB's SAM, but any change requires the card management private key, which was held by unu and is gone with the insolvency.

Our projects can restore or replace these features:

• Sunshine: browser-based cloud replacement. Requires soldering in a new SIM or installing a SIM adapter.
• librescoot: open-source firmware for MDB and DBC with navigation on the display, alarm system, smart steering lock, and keycard management without a server.

Quick start

1. Solder in a SIM adapter, insert a Nano-SIM (see parts list)
2. Create a Sunshine account, register your scooter, run the installer
3. Optional: install librescoot via the installer application

Repairs and spare parts

A curated list of sources for spare parts, tools, 3D-print models, and documentation is at Parts for the Scooter Pro.