Poorly designed PCBs and enclosures that slowly cook the electrolytic capacitors within are a common failure scenario in general, but they seem especially prevalent in so-called Internet-of-Things ...
Rename Project to "checkm8-a5" and open it in Arduino IDE Change the CPID Number in the Arduino project to cour noted CPID-Number Connect Aruduino via USB to Computer (USB A cable) (Greed LED on ...