Power/ Usage sensor - multi channel - local display
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@MarkV Hi Mark It is a rather complicated sketch, so not easy to debug remote.
You need to connect the master arduino to your USB and check with the serial monitor.
then add some Serial.print() statements starting form where the data is read.The piece you commented out is where the node should receive information from the controller. I expect you didn't come far enough to set that up.
(as I noticed you are Dutch, we can use the chat function on the forum to get this working...please don't expect immediate answers..)
