Ha! I remember a somewhat similar issue with the Arduino Nano where one pin was erroneously marked as PWM and one not. A customer had designed electric motor dr

Ha! I remember a somewhat similar issue with the Arduino Nano where one pin was erroneously marked as PWM and one not. A customer had designed electric motor drivers controlled by a socketed Nano and I was tasked with writing software for it. They never looked at the actual ATmega pinouts but used the one available on various hobbyist sites all over the net. I ended up cutting traces and soldering jumper wires on the first batch of devices.