Hi @RoSchmi,
I only recently moved my wio terminal from the usb of my laptop to a plugged in power source. It was failing on opening or closing my laptop lid which was messing with my observations - another thing to investigate!
In short I ran it for about 10 days without issue. I don’t have a client connected to it all the time, but I don’t think that made a difference to the mode of failure.
I moved the delay to the first line of EUart::write by the way.
Interestingly after those 10 days my wio terminal seems to not work at all! The screen is blank even after a reset (I had some debug printed on there) and it doesn’t connect to the wifi anymore - I haven’t looked into this yet.
Steve