Hi Alex,
So I ran the test and something really weird happened. With half the monitors everything without a hitch - no problems there! With the other half, they recorded til about 11am ish before they fell out of sync and stopped recording like before (like they would be fine at the start, then fall behind the others until they just stopped recording on the SD card entirely).
I compared the two sets together and noticed that the lights for the faulty set seemed to be blinking much slower than the other ones (about 1 blink every 2 seconds) and when I plugged them in, the internal clocks was over two hour behind the correct UTC time.
(Set 1 is working properly while set 2 is the lagging one)
This is what they looked like after a couple of sleep/recording cycles:
After I reconfigured them, the AudioMoths in set 2 would still lag behind the correct time like in this video, with the gap widening as time went on:
Not sure if this is the same issue from before popping up again, or a new one that only happened after flashing the devices. It's not a battery problem (all the devices have ~4V of power) and all of the configuration settings between the two sets are identical so I'm not quite sure what is happening to cause the lag...
-Rebecca
