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poos1
04/06/2013, 02:30 PM
I am doing a project to measure the temperature of my tank using a thermistor (http://www.resistorguide.com/thermistor/) and Arduino. Please anyone suggests me a good circuit for interfacing the thermistor with the Arduino analog input.

Jodah
04/07/2013, 12:01 PM
http://www.ebay.com/itm/NEW-DS18B20-Waterproof-Stainless-Steel-Digital-Thermal-Probe-Sensor-100CM-amy-/290891890768?pt=LH_DefaultDomain_0&hash=item43ba820050

These work well, are cheap, and you can run multiples off the same pin on the arduino. Each has a unique serial address that allows this. There are plenty of sketches online that can show you how to use them.

If I remember correctly, you only need 1 4.7k ohm resister for the circuit even when you use multiple sensors. I'll post some links after the Nascar race. :-)

ninja edit: race doesn't start for another half-hour, so here is a simple tutorial on using the ds18b20 temp sensor. http://www.hacktronics.com/Tutorials/arduino-1-wire-tutorial.html