Mac OS X: Open Serial Port-Issues

[dibujo]

Hello forum,

greetings from Bremen, Germany, with the following issue: I cannot upload sketches to Arduinos or other connected boards with Arduino-IDE because of busy serial port, even the easiest blink-program.

The problem seems to be an open serial port that is connected to an EV3-program. Although I no EV3 connected there is the 'EV3-SerialPort' listed in my port list. I connected the Arduino device to a make which was not connected to an EV3 yet, and everything worked perfectly.
The mentioned serial port is also listed as '/dev/cu.EV3-SerialPort' or 'dev/tty.EV3-SerialPort' without anything connected.

Does anybody know how I can get rid of this open serial port?

I already read the following posts and topics:

• Serial Port Busy on Mac: Arduino Forum
• OSX Upload-Issue: Error opening serial port: port busy
• https://www.baldengineer.com/arduino-fixing-serial-port-in-use.html

Thanks in advance,

dibujo

[dibujo]

Problem solved: I had bluetooth-connection settings for the EV3 saved , and these setting somehow led to difficulties with connecting Arduinos. After I deleted these EV3-settings everything is fine now.