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In Terminal a list of all open COM serial ports can be shown via ' ls /dev/tty.* '.
' /dev/tty.HC-06-DevB ' should be shown in the list. A connection serial console to the module can be established via ' screen /dev/tty.HC-06-DevB '.
Unfortunately the MacBook does not reconnect automatically after reset of the Arduino. The Bluetooth module has to be unpaired and paired again to be usable again. Hopefully this will can be fixed somehow...
Update:
To close a running screen, press ctrl-a, afterwards crtl-\ (Yes: on German keyboard: ctrl-alt-shift-7), afterwards y.
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