I’m modifying the firmware to return real and apparent power from both CTs in order to use these to calculate the power factor in a Virtual Feed in emoncms. I’ve bought 4 emonpi units and am doing this with all of them.
I have completed this on one emonpi unit - happy days!
On the second unit however, the firmware builds but PlatformIO fails to upload. Upon trying to connect to /dev/ttyAMA0 it fails with message: “*** [upload] Device or resource busy”
Any ideas? Do I need to open the unit and start checking connections?