Chen Xiao Fan wrote : > I will check the hardware now. Both are on breadboard now. > Maybe I need to transfer them on a soldered board and see if > it works. Are the Wisp628's on breadboards !? Why not just get a bunch of kits from Wouter ? Or, even better, since you are running some kind of professional business (right ?), get them ready-built and tested from Wouter ! You must have plenty of time... :-) :-) Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist