Turn spare Zigbee coordinator dongles into dedicated mesh routers / repeaters with much better range than typical mains-powered Zigbee devices, thanks to their proper external antennas and +20 dBm radios.
- 3× SMLIGHT SLZB-07 USB dongle, Silicon Labs EFR32MG21 SoC, with +3 dB SMA antenna
(bought on AliExpress 2026-01-29, €20.19 each — see
docs/hardware.mdfor details)
- Coordinator stack: Zigbee2MQTT
- Flash the SLZB-07 sticks with router firmware (instead of coordinator firmware)
- Power them standalone from USB power adapters, placed where the mesh needs coverage
- Document everything: what was bought, how to flash, how to update, how they behave in Z2M
| Path | Purpose |
|---|---|
docs/ |
Documentation (hardware, flashing, updating, Z2M) |
scripts/ |
Helper scripts (firmware download, flashing, etc.) |
tasks/ |
One markdown file per task, with status |
CLAUDE.md |
Working notes / instructions for Claude Code |
See tasks/ — one file per task. Each file starts with a Status: line
(open, in progress, done).