Let me start by saying great work all!
I have a ducted PEAD-RP71EA and found the CN105/CN92 connector.
I tried most of the code on github with an arduino and the python code on my Mac and for the life of me I can't see any response coming from the board!
I checked all the pins with a multimeter and I got:
1- 12v (ish)
Any hints for a basic test to see if my CN105 works/board is responding?
PS: I'm using a Seeedstudio Grove connector, it's only 4 pins but the 2mm size fits the bill
Example cables, do notice the resistor pullups on the photos:
Example reference on page 18 with diagram:
So I tried using the pins from CN100 and using the python script the response to connect was always 8x 254(FE)
Is this the expected response to a bad command sent to the unit?