This Arduino sketch approximates our expectation of what SpaceX's code will do on the NAP.
Both tape sensors are treated independently. Whenever one of the tape sensors triggers a message is printed to serial (9600 baud) showing the number of detected tapes, distance and velocity for both sensors. If the Ethernet shield is attached, then the message is also sent over the network in a UDP package to 192.168.0.7:1340.
You can view the received messages with netcat for example:
nc -u -l 1340If an SD card is inserted into the Ethernet shield, the data is also logged to a file called log.txt.