without device:
touch USB --> error message: "Runtime Error Attempt to invoke virtual method 'boolean com.physicaloid_ai.lib.framework.SerialCommunicator.open()' on a null object reference";
key serialUSB: disconnect, key driver: none
connect device --> message wich app should access to the device ? (have some serial terminal apps); key serialUSB: disconnect, key driver: none
ignore! but touch USB --> message goes away, but USB Button still black;
key serialUSB: disconnect, key driver: none
touch USB again --> message access to Arduino micro?; USB Button yellow;
key serialUSB: try again, key driver: none
quit message with OK --> nothing happens;
key serialUSB: try again, key driver: none
touch USB --> USB Button goes black;
key serialUSB: disconnect, key driver: none
touch USB --> USB Button goes yellow;
key serialUSB: connect, key driver: com.physical....CdcAcm
THEN ITS WORKING 