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Help me connect temperature sensors LM335(z) to the analog input of microcontroller

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woody1189

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I am having trouble getting my Handyboard to interpret the readings correctly from a temperature sensor. I'm not sure if the schematic online is correct and could use any help whatsoever. The sensors I have are the lm335z and the lm35, which should i use and how should i go about connecting it to the analog input of my microcontroller?

Schematic-http://makezine.com/images/07/sensor.gif
U1 =Op-amp chip OPA 4241PA
R= 10 kohms
Pot = 10kohms
 

Need Help

As per the kct,u shud use LM335,as it is a adj type.
And the LM35 is not.
The circuit is a combination of instrumentation amplifier and differential amplifier.It is a discrete one.U can even use integrated chips for that like INA121 from ti.
Connect as given in the ckt.Have you connected.?
 

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