how to measure voltage,current,and power and monitor them using openhab ?
What device do you want to measure? There’s not a lot of information to go on here.
One option:
You could use ESPs with sensors communicating e.g. via MQTT with OH.
List of ESP / ESPeasy compatible sensors: https://www.letscontrolit.com/wiki/index.php/Devices
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This is not a Smart Home research service. What devices have you found that may work for you? There is a big difference between measuring fir one device and measuring for a whole house.
i’m working on something like " smart laboraory " , so i’m trying to make a smart voltage sensor that can read voltage and monitor it on a mobile phone using openhab ( through mqtt ) .
that what i thought about . but i have some obstacles :
- the circuit of the sensor and esp
- the program that would be loaded on esp
- config of openhab ( things , items , rules )
any help about that ??
Shelly 3 EM can be implemented using MQTT or the Shelly binding in openHAB
https://shop.shelly.cloud/shelly-3em-wifi-smart-home-automation
Everything should be explained on the link that was shared earlier
a subset of supported sensors is shown on the letscontrolit page
described on the letscontrolitpage e.g. espeasy
apart of MQTT configuration I would not expect extra things/items
??
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ok i’ll try it . many thanks
Lots of devices, such as outlets/plugs, “smart devices” like Sonoff POW etc… Most are Tuya compatible and can be reflashed with something which works with MQTT.
From there, its just a matter of setting up MQTT and openhab2.
All depend on what you need for interface/measure!
i already have a sonoff switch flashed with tasmota firmware , and i could control it using openhab . but for reading and monitoring voltage i want to make the whole work ( circuit , programming , and configuration to openhab ) not a pre-manufactured one ( because it is for a research work not for just use ) .
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