PowerBlade is a single-plane, single-PCB power meter capable of measuring real, reactive, and apparent power and reporting in real time via BLE.

For documentation on the system and protocols it uses, see:

https://github.com/lab11/powerblade

https://github.com/lab11/powerblade/blob/master/docs/powerblade_specs/uart_protocol.md

https://github.com/lab11/powerblade/blob/master/docs/powerblade_specs/ble_advertisement.md

https://github.com/lab11/powerblade/blob/master/docs/powerblade_specs/ble_services.md