> I'm trying to create a digital thermometer which shows the

If you looking for a nice dive into analog issues, A/D accuracy and
stability, linearisation, asm programming, that is OK, but you could
also take an LM75 (I2C temperature sensor) and this example from the Jal
manual:

-- a temperature display using
-- an LM75 and a HD44780 LCD controller

include 16c84_10
include jlib
include lm75
include hd447804

const lm75_address = 0

hd44780_clear

forever loop

   var byte t, d
   var bit f

   lm75_read_fdt( lm75_address, f, d, t )

   hd44780_line1
   if f then
      hd44780 = "-"
   else
      hd44780 = "+"
   end if
   print_decimal_2( hd44780, d, " " )
   hd44780 = "."
   print_decimal_1( hd44780, t, "0" )

   delay_200mS

end loop

When the LM75 housing is too akward consider a dallas DS1820 or one of
its siblings: to92-style case and can be used with just 2 leads. No lib
in the Jal distribution, but I think there is some code in the jallist
file area.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

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