> How does one figure the size of the caps to use with the crystals. 4pf, > 10pf ? I find different values in others projects. > Is there a formula specific to the freq, or is it an isolation mechanism > where I could dip into my big bag of .01uf's to get the job done just as > well? In nearly all cases that will do, but the few cases in which it won't can be a big pain in the ass. The best guess is to follow the recommendation of the crystal manufacturer, especially when this value falls within the range mentioned in Microchip's datasheet. Wouter -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads