GARDENA Matter Bridge¶

Make the GARDENA smart Gateway speak Matter — locally, without the cloud.

Turn the GARDENA smart Gateway (Art. 19005) into a standalone Matter device: your GARDENA devices show up locally in any Matter fabric (Home Assistant, Apple Home, Google Home) — no GARDENA cloud, no second server. The Matter stack runs directly on the gateway.

Status: all GARDENA devices appear in Home Assistant

The bridge is fully functional on the gateway. After commissioning, all GARDENA devices show up as child devices in HA:

2 × GARDENA smart Sensor → soil temperature + battery (soil moisture from HA 2026.7)
1 × GARDENA SILENO mower → appears as a vacuum entity (read-only, no actuation)

Build ✅ · Persistent install ✅ · Reboot-safe (systemd service) ✅ · BridgedDeviceBasicInformation (0x0039) on every bridged endpoint ✅ · Matter interview conformant ✅ · Binary 1.9 MiB stripped, RSS ~5 MiB.

Re-pairing required if upgrading from an earlier build (cluster structure changed).

Just want to get it running?

→ Getting Started — add the HA add-on repository, enter the device ID and sticker password, done. No SSH, no building. Technical reference: Manual.

Why this is plausible¶

Husqvarna ships an official, buildable BSP and supports custom firmware in practice:

Open BSP / U-Boot / Yocto: husqvarnagroup/smart-garden-gateway-public
A/B boot slots + official recovery images → low brick risk
Official SSH access over LAN (no UART, no exploit needed)

Hardware (Art. 19005)¶

Component	Value
SoC	MediaTek MT7688 (MIPS 24KEc @ 580 MHz)
RAM	128 MiB
Flash	8 MiB SPI NOR + 128 MiB SPI NAND
Radio	SiM3U167 (868 MHz, Lemonbeat) — handled by the gateway itself

The binding constraints are RAM (128 MiB) at runtime and the writable UBI flash.

The approach (Variant A)¶

GARDENA devices ──868 MHz Lemonbeat──▶ lemonbeatd (on the gateway)
                                           │  reads LsDL filesystem (inotify)
                                           ▼
                                 Matter bridge app (C++, MIPS cross-build)
                                           │
                                           ▼
                              Matter fabric (HA / Apple / Google)

Flashing goes into Slot B; Slot A stays as the untouched original fallback.

Full technical picture and open challenges: Technical Background. User/build instructions: Manual.

Feature status¶

Feature	Status	Key results
Data layer recon	✅	LsDL filesystem confirmed as primary data source, no IPC socket needed
MIPS cross-build	✅	Cross-build proven, binary 1.9 MiB stripped, soft-float fp_abi=0
SDK pinned	✅	On-device start, connectedhomeip v1.5.1.0 pinned
Sensors in HA	✅	2 sensors, soil temperature + battery via `BridgedDeviceBasicInformation`
Mower as vacuum	✅	SILENO → `vacuum` entity (read-only, no actuation)
Persistent install	✅	Overlay install, systemd service, reboot-safe
Gateway web UI	✅	Static `matter.html` + compiled toggle (0 RAM idle)
Conformance harness	✅	chip-tool E2E harness + full wildcard interview check
MQTT frontend	✅	Parallel to Matter, HA MQTT-Discovery — docs
HA add-on	✅	1-click install via add-on repository, auto-deploy to gateway

Remaining challenges¶

Soil moisture rendering: SoilMeasurement cluster (0x0430) is in the bridge; HA renders it as sensor.soil_moisture starting with HA 2026.7.
More device types: water valves, smart Power, pumps — designed generically, untested (no hardware). Community contributions welcome.

Contributing¶

See Contributing. The project is early — recon data from your own gateway, build experiments, and pointers to prior work are especially valuable.

License¶

Apache License 2.0 — see LICENSE.