Port number ttyACM* on MacOS

Configuration
1

Hi all,
I have a very simple question (I think so, at least).
I have an arduino Uno R3 with MySensors Serial Gateway (running and working). I’m trying to modify the config file as stated in the help but keep getting:

ERROR:mysensors.mysensors:Unable to connect to /dev/ttyACM1

I think the problem is that I don’t know which number I should use after the ACM*. When I run “ls /dev/ tty.*” on the terminal this is the output:

/dev/tty.Bluetooth-Incoming-Port
/dev/tty.usbmodemfd121
/dev/tty.Bluetooth-Modem

The port is usbmodemfd121… but which number should I use in the config file?

Thanks a lot guys, I’m a total newbie and need some helo to start…

2

According to https://www.arduino.cc/en/Guide/MacOSX

/dev/tty.usbmodem (for the Uno or Mega 2560) or /dev/tty.usbserial (for older boards)

You could with it a try with /dev/tty.usbmodemfd121 instead of /dev/ttyACM1. Different operating system uses different name.

3

@fabaff Thanks a lot. It worked. I was looking for a “number”, but the solution was just the easiest.