MxMQTT and how to parse a metric from a JSON-line

[mojavan]

Hi,

I'm struggling with getting MxMQTT to read/show the separate values being sent from a Mi Flora sensor via a broker.

This is the text that is sent to the topic if listening with mosquitto_sub:

Code: Select all

Client received PUBLISH (d0, q0, r0, m0, 'miflora/villav-Mi_Flora', ... (85 bytes))
{"light": 245, "temperature": 23.2, "moisture": 6, "conductivity": 0, "battery": 100}

How do I get MxMQTT to catch the moisture-value?

• MxMQTT is connected to the topic and is receiving

• Reading from Multiline device says "[object Object]⋯ ".

• I'm suspecting that it's "the Displayed Value (Level)"-field under "Create Virtual Devices for Single Topics" that's the culprit?

I'm planning to set up an if-then to trigger opening a Zipato GR105-valve for some watering in case of too low humidity.
Using this handy solution: https://github.com/ThomDietrich/miflora-mqtt-daemon

Yours
moj

[piet66]

MxMQTT Subscriber only accepts one value per topic.

If you want to extract only the moisture you can try with
Object Keys = moisture
(':lc:ack:ts' you can omit, if your object doesn't contain such data)

[mojavan]

That worked brilliantly.



It was all a matter of understanding how the Object Keys-field was supposed to work.



One suggestion for future updates might be to expand the help text/instructions regarding the formatting of this field, maybe with some examples.

Anyhow, thanks alot!