For Physical Computing 2, we are setting up an Aduino to receive serial data from the computer and send it to a 3 digit display (Kingbright BC56-12) through a BCD to 7 segment driver (HEF4543). At this point, I have the Arduino receiving and sending single digits to the driver.
I am currently using a bit mask to shift through each of the digits sent serially to to the Arduino. Here is a link to my code that displays a single digit serially (code).