Reply To: Please Help! Meter CTD Gen2 being blocked by Yosemitech 511-a

The Yosemitech Y-511A needs 12v to operate, so it won’t be happy if you modify the Mayfly jumper to set the 12v output to 9v.  I’m not familiar with the operation of the modbus wing you’re using so I can’t comment on its operation, but we have a new modbus adapter board with it’s own beefy 12v-boost Grove adapter board that will be available in the shop in a few weeks, so I think that might be something for you to try.  I can send you an email about it, and we’ll be posting examples here once they’re ready for release.