Hi All, I’m trying to improve power calculations on an EVSE and was hoping to use the measured voltage from the Multi or Carlo Galvazzi meter. I’ve got MQTT explorer and I thought these would be in the list of topics but all I’ve got on my Victron items is “Serial” and “Connected”.
Any ideas why I can’t find voltage on MQTT explorer ?
You probably need to publish a keepalive in order to populate all the mqtt values. You could also use dbus-spy.
Have Fun
It’s ok, some time later the other topics appeared. Now there are 1670 topics !
I will take at look at all your suggestions though, thanks.
After a restart it’s back to having only 2 topics “serial” and “connected”. I didn’t do anything last time apart from waiting, it just populated all on its own, but I don’t know how long that will take.
I am trying to work out how to send a keep-alive message,
Please help ! I’ve watched videos and read about a dozen websites about how keep-alive works and what its for etc. etc. but still no idea who/what sends these keep-alive messages and to whom or to where.
I read about the Dbus/FlashMQ plug-in but I’m none the wiser. All I want to do is get the voltage onto the broker so that my Evse can read it.
Thanks in advance.
You can publish a keepalive which populates all mqtt values by using the following
R/“your device id here without the quotations”/keepalive
Or you can subscribe to a single topic
R/“your device id here without the quotations”/“path to specific topic here”
Do this with a mqtt node
Or easier would be to just use the “custom” victron node.
So I need to do this within Node-red ? I have been writing topics and trying to publish messages in MQTT explorer.
I must admit I am still unclear what to do. I also tried to use MQTT.cool client test but I can’t get it to connect to the Cerbo broker.
Got it working !
It was the Node-red clue that got me there in the end.
Thanks,