https://github.com/aluedtke7/brifit_demo

A Golang test program to read temperature and humidity from Brifit Bluetooth sensor
https://github.com/aluedtke7/brifit_demo

bluetooth brifit brifit-bluetooth-thermometer go golang ws02

Last synced: 2 months ago
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A Golang test program to read temperature and humidity from Brifit Bluetooth sensor

• Host: GitHub
• URL: https://github.com/aluedtke7/brifit_demo
• Owner: aluedtke7
• License: mit
• Created: 2025-03-18T16:09:49.000Z (2 months ago)
• Default Branch: main
• Last Pushed: 2025-03-18T17:26:12.000Z (2 months ago)
• Last Synced: 2025-03-18T18:37:13.033Z (2 months ago)
• Topics: bluetooth, brifit, brifit-bluetooth-thermometer, go, golang, ws02
• Language: Go
• Homepage:
• Size: 727 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Demo to read temperature and humidity from a Brifit Bluetooth sensor

## Overview

This little GO program will print the temperature and humidity of a Brifit Bluetooth sensor.

I bought a pair on Amazon for 20 Euros.

Output

````

2025/03/18 17:29:48 Inside sensor:  AA:BB:CC:DD:EE:F0 - 0.000000 - 0.000000

2025/03/18 17:29:48 Outside sensor: AA:BB:CC:DD:EE:F1 - 0.000000 - 0.000000

2025/03/18 17:29:48   Inside Temp: 24.1°C - Hum: 29.6% - Bat: 3030 - RSSI: -61 - Uptime: 2d, 6h, 15m

2025/03/18 17:29:53  Outside Temp: 23.6°C - Hum: 28.2% - Bat: 3060 - RSSI: -53 - Uptime: 2d, 0h, 43m

````

The battery level is the 16-bit value without a conversion. I think it could be mV (milli Volt). RSSI is showing the 

signal strength and the uptime shows the converted seconds. See comments in source code for details.

The sensors I bought have the model no. WS02, but other types will probably work the same.

![](images/sensors.png)

## Acknowledgements

The formula to convert the 16-bit value of temperature and humidity is from the github

repository [of user iskalchev](https://github.com/iskalchev/ThermoBeacon).