Multi sensor using same MQTT topic

[123 (Taras)]

Glad to hear you found the source of the problem (misnamed sensor entity).

Regarding the second approach, it is more efficient when a single MQTT topic is used by many sensors. Imagine you have 20 sensors, all using the same topic:

• In the first approach, the incoming payload is processed 20 times, once by each of the 20 sensors.
• In the second approach, the incoming payload is processed twice, first by the automation and then by just one of the 20 sensors.

The second approach also centralizes all processing/reformatting of the incoming data (as opposed to the first approach where each sensors has its own separate template).

I described the two approaches in the following topic. Although it refers to the Sonoff RF Bridge, it applies to any source that uses one MQTT topic to transmit data from multiple devices (and/or parameters).

Sonoff RF Bridge. Strategies for receiving data

Here are two strategies for receiving payloads published by a Sonoff RF Bridge (flashed with Tasmota firmware). Strategy 1: value_template In this strategy, all sensors are subscribed to the same topic published by the RF Bridge. The topic's structure depends on how you defined it when you configured *your* RF Bridge. This example will use `tele/RF_Bridge/RESULT`. Change that to whatever you have set for your Bridge. Because all sensors are subscribed to the same topic, a sensor will receive pa…