Hello Michael,
 In a message dated 19 Sep 96 you wrote to me :

 MS>> We want to pretend that a resistive temperature sensor is one
 MS>> pot of a proportional joystick, thus turning Amy into a
 MS>> computerised thermometer.  :)

 MS> Well, the original design specified NTC (negative temperature
 MS> coefficient) sensors, since these are supposed to be more linear.

The one advertised at Jaycar (50cents each) are NTC type - 470 ohms at 25
degrees C.  It would work quite well.

There really isn't a great deal of difference between PTC and NTC sensors
when talking linearity, with either sensor you will have to calibrate them
at a number of temperatures.  If you really want a linear temperature
sensor then you will have to get a Platinum one (neither PTC or NTC)

I can't see the design being too complex - do you have any code that will
read the sensor??  If you send some details I would like to have a go at it
also.

Josh Marshall                        FidoNet   3:640/201.14
Member TEAM AMIGA                    AmigaNet 41:400/869.14

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