JJ, I downloaded your script and did a chmod +x, but when I run it I get the error "cannot execute: required file not found".? So I thought maybe it will run on its own.? I tried to run FT8, and it crashed on the first contact.? I'm more and more suspect that it is just not happy to have the log file open whole trying to write to the log.? After the crash I checked and the pi_power.log file has not been created.?

I double checked my power supply and voltage was lower than I thought, and I have bumped it up to 13.8v.? But still getting crashes.??

You can see current and voltage in my pictures (before turning up the voltage).?