SaturnGoddex

So far as far as I can tell, assuming we have the same issue, it has to be #2, some sort of black swan electrical event must be tripping the reset function. I wonder if the reset line has a pullup or pulldown on it... might be time for me to get...

Bit of an odd question, what climate/part of the country does this teensy live in?

I'd be happy to try but I'm not sure it's possible to actually read the flash off a teensy?

I appreciate the expertise. This has been weird. It's unfortunate I can't dump the firmware on the other end and see what's going on

Teensy isn't locked and since customer firmware updates are a feature (it's an open source project) that isn't an option. The kit doesn't have a battery which is what confuses me. I assumed with corruption that it would fail dead rather than the...

This has been a real head scratcher for me. I sell a little kit that includes a teensy 4.1 with special firmware that I flash before mailing them out. I've had multiple reports from customers on the other end that they're in the blinking led...