Quote Originally Posted by DonD View Post
am new to PIC's.....BS2SX stamp with a 18F4520. We need the additional storage space. I need to be able to communicate with an external Hitachi compass module to extract heading info and a Parallax GPS module for location.
Far as I know, those modules talk using standard serial (I.e. UART, not SPI).
Get ahold of the datasheets for the modules, figure out how they 'talk' and make the PIC 'talk back'. Easy stuff.
But...
I am new to PIC's and am in the process of trying to replace a BS2SX stamp with a 18F4520
Do yourself a favor...Work your way UP to using PBP/PIC's to talk serially to external modules.
Make an LED blink first, read a button, display something on an LCD, and so on and so on.
Seen it time and time again...jumping in with both feet doesn't work.
And even though the Stamp's and PBP/PIC's are very similar, they are quite different animals.