Well, this became more of an adventure that I’d originally wanted but, after learning some BLE and, with the help of others (Thanks Jonatha, JsBergbau), I’ve sample code that connects to 4 Xiaomi 2nd gen. Thermometers, subscribes to readings and publishes the data to MQTT. From there, I’m scraping it using Inuits MQTTGateway into Prometheus.

Repo: https://github.com/DazWilkin/gomijia2

Thanks|Credit:

• Jonathan McDowell for gomijia and help
• JsBergbau for help

Background

I’ve been playing around with ESPHome and blogged around my very positive experience ESPHome, MQTT, Prometheus and almost Cloud IoT. I’ve ordered a couple of ESP32-DevKitC and hope this will enable me to connect to Google Cloud IoT.