Power Measurement
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It would be interesting to see how much power we need, both in 230V "regular grid" and the DC side of things.
Festival Grid
Festival Grid was suggested as a solution for this.
- Central server
- Smartphone app
- Sensors
The sensors are normally based on Tasmota devices. There are no sensors for 12/24/48VDC out of the box, but it supports a few different sensors that would work with DC:
- list of supported sensors
- BL0937 sensor datasheet -> they're also available on AliExpress
But it seems Festival Grid uses MQTT to "gather" the data, so you could just imitate a tasmota device, or even implement your own Template in Festival Grid to read custom sensors.
You could also use the Tasmota Devices for AC devices like in villages etc.