I am checking wifi strength only every 5min. At midnight I am reading total energy in order to calculate daily consumption. 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How have you handled this issue in shelly meters? https://www.google.com/search?q=shelly+s+meter+reset+on+power+loss

good point! Will check it out and if needed add a sw solution.

You are right! The shelly plug s looses its energy data after a power loss. You can fix it per software if you need long time recording. In my case, I am looking more on daily or longest one month basis. As my loads do not change over time it is ok for me. However I will put some logic in my node but it will take some time. One other tip when using my managing node and you have many of them, is to program the inject nodes that way, that all http request do not happen at the same time. I use a 1 second difference in order not to overload my RPI and/or router.

[image] juntiedt: However I will put some logic in my node but it will take some time. Have a look at this topic, it may give you some ideas how to resolve it. [image] Understanding Shelly aenergy vs apower for daily power consumption? Hardware Calculate it before writing to the database. Save the reading to context, then when another reading arrives compare it with the previous reading to determine how much energy has been used between those times, and write that to the database, and then save the current reading to context, etc, etc. You can determine and deal with the device being reset because the current data would be less than the previous. To then read it in influx, just sum the values over whatever time period that you wish…

Hi Paul, thanks for the tip. I read this article already and I know how to do it. It is only a question of having enough time :wink:

I also know the problem and have solved it for me as follows: I save the reported energy values in the global.json in two different fields. last reported value and sum of the reported values. in 1. comes the current value that is reported by the device. Should this - e.g. because of a power failure or reset fall to "0" (current value < memory 1.) then the current value from 1. is added to the value of 2. and stored in 2. The new smaller value from the device is then stored in 1. again. The consumption is always the sum of 1st and 2nd memory. If the consumption should really be reset, you have to reset the Shelly and then set both memories to "0". BR Hubertus

[image] Hubertus: I save the reported energy values in the global.json in two different fields. current reported value and sum of the reported values. Why do you need to save 1) to global context? You have the current reported value from the incoming msg, which is then added to 2), so it has then no further use? See the link that I posted above.

I have changed the term from current to "last". Thus this corresponds to your lastReading = context.get('energy') || 0 since I don't work with the databases at this point I think the approach to the solution is analogously identical. BR Hubertus

[image] Hubertus: I have changed the term from current to "last". It's not the terminology, I'm wondering why you are saving two different values to context, when you really only need to save one

I mentioned that to many concurrent http-requests after deploying and at midnight overloaded my RPI and/or router. (I am monitoring 15 shellies) My first idea was to set differrent start times in the inject nodes which is not very smart. I now made one flow that has a rate limiter (1msg/sec) and a single http-request) which gets called from all shelly modules. No problems any more! I am loosing some seconds a midnight but that's ok for me. [{"id":"3c910825e08b5d8c","type":"tab","label":"http-request / 1 per sec","disabled":false,"info":"","env":[]},{"id":"d59a2325dd14c795","type":"link in","z":"3c910825e08b5d8c","name":"http-request-in","links":[],"x":115,"y":200,"wires":[["b6d25064a9175512"]]},{"id":"e68047ac842dec83","type":"http request","z":"3c910825e08b5d8c","name":"","method":"GET","ret":"obj","paytoqs":"ignore","url":"","tls":"","persist":false,"proxy":"","insecureHTTPParser":false,"authType":"","senderr":false,"headers":[],"x":610,"y":200,"wires":[["94280fbadd4967bf"]]},{"id":"94280fbadd4967bf","type":"link out","z":"3c910825e08b5d8c","name":"http-request-out","mode":"return","links":[],"x":735,"y":200,"wires":[]},{"id":"cf4c00a83026702e","type":"delay","z":"3c910825e08b5d8c","name":"","pauseType":"rate","timeout":"5","timeoutUnits":"seconds","rate":"1","nbRateUnits":"2","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"allowrate":false,"outputs":1,"x":420,"y":200,"wires":[["e68047ac842dec83"]]},{"id":"760087790f617ecf","type":"mqtt out","z":"3c910825e08b5d8c","name":"","topic":"Heizung-Telegram","qos":"0","retain":"","respTopic":"","contentType":"","userProps":"","correl":"","expiry":"","broker":"f5f6599b.7711a8","x":790,"y":340,"wires":[]},{"id":"8a57e75b488d416f","type":"function","z":"3c910825e08b5d8c","name":"","func":"msg.payload = \"Fehlerzeitpunkt: \" + msg.payload + \" / \" +\n \"Flow: Monitor shellyplug s\" + \" / \" +\n \"Fehlermeldung: \" + msg.error.message + \" / \" +\n \"Fehler ID: \"+ msg.error.source.id + \" / \" +\n \"Fehlertyp: \" + msg.error.source.type + \" / \" +\n \"Fehlernode: \" + msg.error.source.name + \" / \" + \n \"Fehlerzähler: \" + msg.error.source.count;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":600,"y":340,"wires":[["760087790f617ecf"]]},{"id":"25f7a21086c36253","type":"moment","z":"3c910825e08b5d8c","name":"HH:mm:ss DD:MM:YYYY","topic":"","input":"xyz","inputType":"flow","inTz":"Europe/Berlin","adjAmount":0,"adjType":"days","adjDir":"add","format":"HH:mm:ss DD:MM:YYYY","locale":"de_DE","output":"","outputType":"msg","outTz":"Europe/Berlin","x":390,"y":340,"wires":[["8a57e75b488d416f"]]},{"id":"9b34005634e064c9","type":"catch","z":"3c910825e08b5d8c","name":"All errors","scope":null,"uncaught":false,"x":180,"y":340,"wires":[["25f7a21086c36253"]]},{"id":"b6d25064a9175512","type":"function","z":"3c910825e08b5d8c","name":"function 50","func":"return msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":230,"y":200,"wires":[["cf4c00a83026702e"]]},{"id":"f5f6599b.7711a8","type":"mqtt-broker","broker":"10.0.0.43","port":"1883","clientid":"","autoConnect":true,"usetls":false,"protocolVersion":4,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","willTopic":"","willQos":"0","willPayload":""}]

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Monitoring shelly plug s

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Paul-Reed 2 January 2023 10:13 5

Have a look at this topic, it may give you some ideas how to resolve it.

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Monitoring shelly plug s

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