its working, it was the LLC. no idea how but if I change it to another LLC (I have a few 8 channel sat around) everything works. So happy this works!!! thanks so much for your help
The LLC issue is strange but I think the main stumbling point was the isolation of the USB chip from the RX line of the D1 - once the resistor is removed all of these boards should work with a Texecom panel.
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