On Fri, 21 Mar 1997, Carl Connett wrote:

> Any opinions on reading temperature?  I'm new to the PIC world and I'm
> considering a PIC16C7X.  I think I will need something accurate to
> within a half degree (F), but will probably display it in two digits
> only (perhaps one decimal).
>
> I read in the app notes about a capacitor discharge method to read a
> resistance (thermistor) that looked ok, but would the A/D convertor work
> easier?  I don't quite follow how I would use it.
>

  If you want to read only one sensor the easiest is the DS1820 digital
sensor from Dallas. They are about $5.50 each from Dallas directly (the
most reliable source for small quantities). If you need to read more then
it needs some extra code to address each sensor individually. I'm
currently using them in my DigiTemp product for direct connection to a PC,
but I also wrote all the code to talk to them with a PIC16C84.

  Brian

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