Automation not getting fired even though sensor values changes

Configuration
1

Hello! I have Home Assistant connected to Frigate with MQTT, I have used the Min/Max - Home Assistant integration to sum the value of all the vehicles detected by the cameras.

I have the setup an integration which checks whether this changes from 0 to any value, and sends a notification, here’s the trigger:

trigger: state
entity_id:
  - sensor.veicoli_rilevati
from: "0"

Unfortunately, even though I see the value of this sensor changing in the UI, the automation does not get triggered. Can somebody help me debug this? Thanks.

2

Hi Aquatica,

Just to make sure you are understanding triggers correctly, they are events. In that case it will change when the state changes from a text 0 to something else.

3

The most likely issue is that the actual state is “0.0”… State triggers are very literal, to hedge you can just add this value to what you already have:

trigger: state
entity_id:
  - sensor.veicoli_rilevati
from: 
  - "0"
  - "0.0"
4

I’ll try, thanks.

I also just read the code, and saw that the sum is exposed as the attribute “sum”, should I also specify that? Thanks.

5

@gjohansson sorry for pinging you, but I see you are the maintainer of that integration. Could you help me understand the best way to achieve this? Thanks.

6

I don’t think Min/Max works like that anymore… from what I can tell via direct experimentation neither the Helper nor the YAML-configured versions produce a sum attribute.

Set the type to sum so the state will be the sum, do not specify an attribute in the trigger.

7

Okay, got it. I’ll try as soon as I can to trigger it.

Thank you for your help :pray:

8

I have tried triggering it with input_number (which actually set the state to UNKNOWN since it’s a different type format from the camera counter), and it looks like it’s working. Thanks!