Hello,

For a project wtih a fablab, we have using a Li-Polymer Charge Management Controllers MCP73831
You can have free "sample" for prototype if you ask directly to the factory, perhaps it could be faster.

Hello
A friend send me an old weather station in 868mhz, I want to hack it for using it in domoticz
Your project is similar as I want, where can I find your code?
Thank's

For precision, I've just one phase at home, but I want few Amps meter for different "sectors" of the house.
My question was: Is it a good idea to use the transformer (I've a AC 220V to AC 12v 3VA) for both using: power supply of the sensor (with rectifier bridge and capacity and regulator) and for voltage meter (with divider bridge as you do in your sensor).
Or it's a bad idear: Is it possible, in this configuration, to generate a voltage variation when arduino send informations?

@maglo18
Hello,
I have a question about your sensor
I want to do a similar sensor, with 3 or more Amp meter but just one voltage.
Is it possible ( or a bad idear) to use transformer for measuring voltage and use as power suply (with regulation 5v and 3,3v) for sensor?

Thank's