SHT31 Monitor - Home Assistant

The SHT31 node publishes via MQTT and Home Assistant auto-discovers it when mqtt.ha_discovery: true (the default). No manual YAML required.

Verify MQTT entities

1. Settings - Devices & Services - MQTT.
2. Find thesada-sht31 (or whatever device.name is set to). It appears automatically once the device connects.
3. Click the device. Two entities should show:
   • sensor.thesada_sht31_temperature
   • sensor.thesada_sht31_humidity

If the device is not visible: check the broker actually receives the discovery configs:

mosquitto_sub -h <broker> -p 8883 --cafile ca.crt \
  -u <user> -P <pass> \
  -t 'homeassistant/sensor/+/+/config' -v

Each entity references the live state topic (thesada/sht31/sensor/temperature/sht31, .../humidity/sht31) and the availability topic (thesada/sht31/status). Home Assistant marks the entity unavailable when the device’s LWT fires.

See MQTT Topics for the full topic shape and discovery payload schema.