help with arduino ide on orange pi 4

hi,

i m a new user and here is my problem : running an arduino on a orange pi 4. my orange pi doesnt see any arduino connexion. lsusb gives nothing at all. i m on ubuntu 18.04. i have tried with a UNO R3 and a MEGA 2560 , same thing, nothing appears on lsusb. notice that both works on windows and i use the same USB cable... thanks for help :slight_smile:

fine, finnaly , it need an extra power supply …