I'm not sure if this is the same issue, but we've been dealing with something possibly related. We have some FED3s that don't turn back on after being turned off. The only way to turn them back on is to reflash them. Sleep is disabled in our code; but this issue only really happens after turning off the power, not spontaneously while the task is running.
This mainly seems to be a problem with the fully assembled FED3 devices we've ordered from Open Ephys within the past 3 months, so I'm not sure if it is a hardware or software issue. We're discussing with the company now and I'll update if we learn anything new.
In the meantime, I'll note the library versions we are using in case it can be of use:
- Both Mac and Windows Arduino IDE, 1.8.13
- FED3 1.16.3
- Adafruit_BusIO 1.11.1
- Arduino_Low_Power 1.2.2
- RTClib 2.0.2
- RTCZero 1.5.2
- SdFat 2.1.2
- Adafruit_GFX 1.3.6
- Adafruit_SHARP_Memory_Display 1.1.0
- Adafruit_Unified_Sensor 1.1.4
- Adafruit_AHTX0 2.0.1
- Adafruit_SH110X 2.1.5