+- F1ATB forum (https://f1atb.fr/forum_f1atb)
+-- Forum : Forum de F1ATB (https://f1atb.fr/forum_f1atb/forum-3.html)
+--- Forum : Routeur Photovoltaïque (https://f1atb.fr/forum_f1atb/forum-4.html)
+--- Sujet : MQTT + accueil (/thread-1650.html)
MQTT + accueil - m2ts - 30-07-2025
Hello
Unfortunately my French isn't as good as my English, but hopefully one can help me...
I want to setup 'un routeur photovoltaïque" for an electrical heater for domestic hot water by using a SSR-40 DA. At the moment I only installed the software version 15 on a ESP-32-WROOM, configured WiFi and setup MQTT. But I'm in doubt if I setup it correctly.
As 'Source des mesures de puissance' I took MQTT with 'MQTT Topic Puissance' as 'emon/household/PT' (emon from https://emoncms.org/, a system that is already running).
But for the ''Paramètres serveur MQTT' I'm in doubt:
- 'MQTT Préfixe de découverte (1 seul mot ex : homeassistant )': I just took 'emon', because I have the topic ''emon/household/PT''?
- 'MQTT Préfixe de publication (1 seul mot ex : homeassistant )'. I just took 'emon', because I have the topic ''emon/household/PT''?
- 'MQTT Device Name / Nom routeur (1 seul mot ex : routeur_rms )': I just took the default routeur_rms. But does this value matter somewhere?
- 'Souscrire au forçage des Actions via le serveur MQTT' tranlates as 'Subscribe to the forcing of the Actions via the MQTT server', but I don't know what this means.
I guess I'm in doubt because I'm mixing up what I want to discover (la puissance de ma maison on positive ou negative watt) and what I want to publish. If I look with MQTT explorer, I see a topic emon/routeur_rms/Available, with value 'online'. But maybe the routeur can publish other important values as well? But I don't know which :-).
If I look at 'Données brutes', I see the correct 'Données puissances recues par MQTT' (namely the same value as MQTT explorer shows). But at the page 'Accueil'
- If 'emon/household/PT' is -750, I would expect 'Puissance Active (Pw)' > Injectée to be -750 W as wel, but it is 0 W.
- I also would expect the graph 'Puissance Active Données Maison sur 10 mn en W' at the page 'Accueil' to change with the value of emon/household/PT changing. But it is jus a red horizontal line at zero...
I think I am misunderstanding something... Who could bring light in the darkness?
RE: MQTT + accueil - F1ATB - 30-07-2025
If you can see the power figures in the page données brutes you are not too far to success.
Can you attach a picture of the données brutes page and the MQTT explorer. I want to check if the syntax of the message is correct.
Regards
André
RE: MQTT + accueil - m2ts - 30-07-2025
Hello André
Glad to read that I'm not far from succes
. I attached two screenshots as an attachment.Kind regards
RE: MQTT + accueil - Mike - 30-07-2025
Hi,
It looks like PT doesn't have the right format, it should be a json value similar to the one for PuissanceMaison on this screenshot:
https://f1atb.fr/wp-content/uploads/2024/05/Capture-decran-2024-05-27-174946.png
"Pw" is mandatory but "Pf" is not.
Hope this helps.
RE: MQTT + accueil - m2ts - 31-07-2025
Mike, this helps a lot! After a Node-RED flow that takes emon/household/PT to send it through a change node I can now see the graph. Thanks!
André, because of the extra step (read MQTT, change value, publish to MQTT again), I probably have a little bit of lag. Would it be possible in a future version to have more flexibility in filling out the desired information? Eg.:
Code :
MQTT Topic Puissance: emon/household/PT #The value is directly in the topic, eg. -115
MQTT Topic Puissance: emon/routeur_rms/PT.Pw #The value is in a JSON string, eg. {{"Pw": -115, "Pva": -110, "Pf": 0.5}}
MQTT Topic Puissance: emon/household.PT #The value is in a JSON string, eg. {{"PT": -115, "FR": 0.5}}
MQTT Topic facteur de puissance: emon/household/FR #The value is directly in the topic, eg. 0.5
MQTT Topic facteur de puissance: emon/routeur_rms/PT.Pf #The value is in a JSON string, eg. {{"Pw": -115, "Pva": -110, "Pf": 0.5}}
MQTT Topic Volt-Ampère: #empty, so the user has no interest in this valueRE: MQTT + accueil - F1ATB - 31-07-2025
I will see