Hello! I have built the ASK Reader from MicroChip (51115F.pdf) but it don`t works at all before I`m added a pot. to the comparator (TL084). I`m think the Sync-routine in the code don`t works properly because the data is different every time. Is there any method to detect the stopbit in the datastream from the 125kHz 64 bit RFID-tag so the reading will start at the same place every time. Somebody with experience of this? Regards =C5N --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .