It looks a very cheap solution for me using 16F1507 but I didn't find any option in datasheets about crystall oscillator. I can find only external clock source or internal RC. Am I missed somting? --=20 ~~~~~~~~~~~~~~~~ http://galzsolt.zzl.org --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .