chuckcfs:
Ok, first thing tomorrow I'll got for the comparators and try to get the data from the card by this way, I was trying to use an interrupt to "catch" the signal peaks and store 'em in an array to generate the F2F signal.Nothing prevents you from using interrupts once the signals (clock and data) has been conditioned and turned into a digital signals. In fact a cardreader project posted here several years ago did just that, the clock pulse wired to a arduino interrupt pin and the data wired to any digital input pin.
Lefty
I'll try with the comparators,
Thanks a lot for all the help