[nSLUG] External temperature sensor (Gerald)
daniel at bonmot.ca
Mon Dec 10 12:16:22 AST 2007
I hooked up the "thermistor + joystick port" type sensor on my
Apple //c twenty years ago and it worked great.
Note that the thermistor resistance is not linear to temperature so
you can't calibrate with a simple two end points + regression.
The other very easy sensor for that port is an electric eye light
sensor - for a couple bucks you can measure sunlight, cloud, objects
moving, light on in room, etc.
However, I didn't know that windows machines even currently *had*
joystick ports any more.
Halifax, Nova Scotia, Canada
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