Hi Ive ordered a fox board and am looking at creating a clockin unit for work. Think I would use a serial card reader and 4 line lcd. Im quite happy on wireing this up and using linux to program it
My only problem is that I need to generate 2 tones, One for card swiped ok (high pitch) and one deep tone for if the swipe failed. Is it possible to use one of the outputs with a buffer or transistor to drive a small speaker or pc buzzer. I would just turn it on/off at a set speed. ? Thanks in advance for any pointers. Nick
