Hello
I tried to communicate between ATMEGA32U4 (arduino micro) and carambola2 directly with USB.
Now I can speak with serial mode in python with my arduino micro. I connected the 5V of arduino with externe power supply, I use the same ground between cara2 and Arduino.
So it's good, but the carambola2 run with 3.3V and arduino with 5V. I just connected USB- and USB+ (D- D+) of arduino in the pins 20 and 21 of carambola2 without bridge.
Do you think is dangerous for carambola 2 ? I don't want break the carambola2 if I use this system in my PCB during several months.
Ronan