Can multiple NTC Thermistors share the same resistor?

Using Arduino General Electronics
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Hi all, first time user here.

I am using an arduino Mega 2560 in a relatively simple project.

8-10 NTC thermistors for temp readings, displayed on an LCD.

Today I breadboarded out one sensor in a voltage divider (with 10k resistor), did all my steinhart-hart calculations, and wrote some basic code to run the calculations and serial print the temp. All works great.

My question is this- when I start adding more thermistors, is it possible for them to all share and use the same 10k resistor for the voltage dividers? Is there any reason that I would actually need to use a separate voltage divider for each individual sensor?

Thanks in advance,
Rob

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You could share the 10k with the other thermistors by using an analog mux.

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500×653 37.3 KB

Input side goes to the thermistors, the output goes to A0 and a 10k to GND.

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10 resistors or a [u]resistor pack[/u] is a LOT easier! :wink:

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“is it possible for them to all share and use the same 10k resistor for the voltage dividers?”

Assumed the the OP was trying the get away with using only one analog input.

Assuming made an ‘Ass’ out of me. :frowning:

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The answer to the subject line is "no". Simple.

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thank you all. after i thought about it some more i realized it was actually a pretty stupid question, haha!

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