I bought three arduino nano clones. The "REXQualis" ones on Amazon.
I'm running OSX Catalina. Arduino IDE up to date. But they don't work.
Specifically, they don't show up under my Ports in the Arduino IDE.
Was told I needed to download CH340 drivers, so I did that.
They don't work.
Was told I needed to delete them bc Catalina has it's own CH340 driver and they conflict. Deleted them.
The nanos still don't work.
I've tried every other basic troubleshooting answer: different ports, different cables, reboot, re-install, etc etc.
What DOES happen, is when I plug in the nano via USB, the power LED blinks red 8 times, and the L LED blinks red 7 times (both at roughly the same time).
Does anyone have any ideas on what else I could try?