I am now having my first experience with a Xenon in fast blinking green. I put a Xenon endpoint one floor down in my office/warehouse. It is sitting in a room below my office which is about a distance of about 25 feet (~8 meters) but going through a 4" concrete floor with steel trusses and a drop ceiling (not to mention all the other stuff sitting around in my office. At first, it took about 30 minutes to connect to the mesh then it started breathing cyan and responding to heartbeats without any intervention… just had to be patient. Randomly, it stopped responding and when I go check on it, it had fast blinking green. I hit reset and it went to breathing cyan fairly quickly and was again responding to heartbeats. Then 15-17 minutes later, it stops responding again and sitting with fast blinking green. While it is responding, it has fairly good latency (<80ms) but fails to report intermittently. It seems that this issue might arise when an endpoint is on the fringe of the mesh network and may be subject to lost packets. I have a few external antennas (3 different models) on order but I won’t be able to test those until next week.
I think I’m going to put some serial debugging statements into my MarcoPolo code for the endpoint and hook it up to a laptop with serial monitor to see what’s going on.