Melanie,
I have a question on the Mag reader card hookups in your source code. Which pin is considered the clock pin on the DB9 Config and which is considered the card loaded and running signal. The pins I have hooked up are Pin 3(TX) Pin5(GRD)
Pin4(DTR) to +5volts With 1,2,6,7,8 and 9 disconnected.
Thanks,