Hi Piclisters, [xcus for the OT] did somebody already programmed the said iButton? I have a DS9097E for this. I can read the button, but I can not program it. The software written by me, using the AN-74. I do the programming as in the spec. The 12V is o.k., the programming pulse is also ok (about 500 usec). Any experience? Thank you in advance... Imre