Arduino MacOS10.13.4でシリアルポートが開かない


Arduino UNOを使い始めたのですが、10.11.6では問題なく通信できます。

Arduino:1.8.5 (Mac OS X), ボード:“Arduino/Genuino Uno”

/Applications/ -C/Applications/ -v -patmega328p -carduino -P/dev/cu.usbmodem1431 -b115200 -D -Uflash:w:/var/folders/_r/688ntz4d4fl9cx1_c0dy4ql40000gn/T/arduino_build_462810/Blink.ino.hex:i

avrdude: Version 6.3, compiled on Jan 17 2017 at 12:01:35
Copyright © 2000-2005 Brian Dean,
Copyright © 2007-2014 Joerg Wunsch

     System wide configuration file is "/Applications/"
     User configuration file is "/Users/yoshifumiinomata/.avrduderc"
     User configuration file does not exist or is not a regular file, skipping

     Using Port                    : /dev/cu.usbmodem1431
     Using Programmer              : arduino
     Overriding Baud Rate          : 115200

avrdude: ser_open(): can’t open device “/dev/cu.usbmodem1431”: Resource busy

avrdude done. Thank you.

(Kevin) #2

It looks like you have the “Genuino Uno” board selected.

You should be using the “Leonardo” board type.

Try that and see if it works. Good luck!


Thanks Kevin,
I tried it,but the result was the same.
When I used 10.11.6, I connected with the “Genuino Uno” board selected without problems.

(Kevin) #4

hmm… It seems the problem is somewhat related to having arduino set up. Maybe you could ask for support in their forum also?

(Pharap) #5

What game do you have on your Arduboy?

If you previously compiled something for Genuino Uno and uploaded that to Arduboy then that could be a problem.


Thanks for the advice.
No, I will use UNO for the first time.
My problem is that macOS High Sierra can not communicate with the board in serial.

(Pharap) #7

This might help:

There are some other comments in the thread that might help.