twBLE2MQTT

Japanese (日本語)

A Bluetooth Low Energy (BLE) to MQTT gateway that discovers and decodes advertising packets from various sensors. Inspired by Zigbee2MQTT.

Features

• BLE Device Discovery: Automatically scans for nearby BLE devices and reports their presence, RSSI, and metadata.

• Sensor Decoding: Decodes advertising data from popular BLE sensors:

  Vendor	Model/Type	Parameters
  SwitchBot	Meter (WoSensorTH)	Temperature, Humidity, Battery
  SwitchBot	CO2 Sensor	Temperature, Humidity, CO2, Battery
  SwitchBot	Outdoor Meter (IP64)	Temperature, Humidity, Battery
  SwitchBot	Plug Mini	Switch State, Overload, Load (Power W)
  SwitchBot	Motion Sensor	Movement, Light Level (Bright/Dark), Battery
  Inkbird	IBS-TH1/TH2/etc.	Temperature, Humidity, Battery, (CO2 on some models)
  OMRON	2JCIE-BL01/BU01	Temperature, Humidity, Light, Pressure, Noise, eTVOC, eCO2

• Multiple Destinations:

  • MQTT: Publishes sensor data and device status to an MQTT broker in JSON format.
  • Syslog: Sends reports and events to one or more Syslog servers.

• Vendor Mapping: Identifies device vendors using manufacturer codes or MAC address prefixes (via external CSV maps).

• Flexible Configuration: Supports both command-line flags and environment variables.

Operating Environment

• Go: Version 1.25 or later.
• Operating Systems:
  • Linux (requires BlueZ installed).
  • macOS (uses CoreBluetooth).
  • Windows.
• Hardware: A compatible Bluetooth adapter is required.

Installation / Build

Using Go Directly

To build the binary for your current platform:

1. Clone the repository:

   git clone https://github.com/twsnmp/twBLE2MQTT.git
   cd twBLE2MQTT

2. Build the binary:

   go build -o twble2mqtt

Using mise-en-place

This project supports mise for managing the Go toolchain and automated build tasks.

1. Install mise if you haven't already.

2. Build for all supported platforms (Linux, macOS, Windows) and architectures (amd64, arm64, armv7):

   mise run build

   The resulting binaries will be located in the dist/ directory.

3. To clean the build artifacts:

   mise run clean

Usage

Starting the Gateway

You must specify at least one destination (MQTT or Syslog).

./twble2mqtt -mqtt tcp://localhost:1883 -syslog 192.168.1.100:514

Command Line Flags

Flag	Environment Variable	Description	Default
-mqtt	TWBLUESCAN_MQTT	MQTT broker destination (e.g., tcp://broker:1883)	""
-mqttUser	TWBLUESCAN_MQTTUSER	MQTT username	""
-mqttPassword	TWBLUESCAN_MQTTPASSWORD	MQTT password	""
-mqttClientID	TWBLUESCAN_MQTTCLIENTID	MQTT client ID	twBlueScan
-mqttTopic	TWBLUESCAN_MQTTTOPIC	MQTT base topic	twBlueScan
-syslog	TWBLUESCAN_SYSLOG	Comma-separated list of Syslog destinations	""
-interval	TWBLUESCAN_INTERVAL	Interval for sending periodic reports (seconds)	600
-all	TWBLUESCAN_ALL	Report all addresses (including private/random)	false
-debug	TWBLUESCAN_DEBUG	Enable debug mode	false

Environment Variables

All configuration flags can be overridden by environment variables prefixed with TWBLUESCAN_.

Monitoring

You can monitor the data collected by twBLE2MQTT using TWSNMP FK.

License

This project is licensed under the Apache License 2.0. See the LICENSE file for details.