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ml at mail.tsaitgaist.info ml at mail.tsaitgaist.infoHi, Because I'm also deceived by the rebelSIM, I was programming a sim sniffer using an atmega, by detecting the clock freq. manualy. Until Harald announced his SIMtrac. His solution is way easier, and more reliable. This is why I've now done a hw design for it. I don't know if it's the right mailing list, but it seemed to be the best. I'm not a electronic expert, I just follow datasheets and examples. I used the openPCD schema to do this one. There is : - the AT91SAM7SXXX - 2 SC sockets (ID-1 and ID-000) for the SIM in credit card and usual size, as on the rebelSIM - 1 SC port (IN) to connect the SIM for the phone (I would use the ones from rebelSIM) - 1 SC port (OUT) to be able to use the signal using external HW - the sam-ba port to be able to flash it here the schema : https://file.tsaitgaist.info/www/?a=d&i=CWn6xIaCVe please tell me if there is something wrong, or needs some improvement. I will design the PCB shortly. thanks, tsaitgaist