I have received my Home Assistant yellow today. Since i was using a Raspberry Pi CM4 including a HA instance i just decided to plug the module into the yellow and wished for the best.
It started and everything worked except for the internal zigbee gateway. Since the ttyAMA1 did not appear i figured it was not enabled in the config.txt. So i added dtoverlay=uart2 and restarted the yellow a few times. Now, the ttyAMA1 appears but it is not showing the zigbee coordinator. When i try to setup ZHA using ttyAMA1, 115200, HW dataflow control it fails and returns something like “could not connect to ZHA-device”. I have already a conbee II stick on ttyACM0 which is using deconz integration but i guess it should not influence this?
Yea, that’s not the best idea. The build of HAOS for Yellow includes specific configuration options for the various devices on the Yellow board, including the M.2 PCIe slot, RTC, Zigbee module, etc…
You might have better luck performing a full backup of your existing HA system, and then restoring it to your Yellow running the Yellow edition of HAOS.