How do I measure one or more PT100/1000 (PTC Resistor) with a Arduino/ATmega328 over I2C? Are there any ready microchips? Do I need to construct my own circuit? If so, are there any ready schematics?
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I've seen some ADC's from Analog specifically for RTD sensors with I2C interface - check their parametric table. Other manufacturers probably also have these.
Also, you can use any I2C ADC with differential input for that.
Schematics will be in datasheet :-)
BarsMonster
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2This not answer the question. – Daniel Grillo Oct 11 '13 at 15:32
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1@DanielGrillo Actually, it is. An I2C ADC is practically the only way to read an analog thermistor via I2C. (aside from programming an mcu to act like an I2C ADC). – Passerby Oct 11 '13 at 16:38
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3Answer or not, two years out is a funny time to be bringing it up – Scott Seidman Oct 11 '13 at 18:37
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@ScottSeidman Standards change. The bar raises. – Nick Alexeev Jan 02 '16 at 06:09
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@NickAlexeev, apparently every two years! – Scott Seidman Jan 02 '16 at 19:11