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Temperature sensor to OP Amps
Posted: Wed Feb 03, 2010 11:45 pm
by Sufre Haji Muhamad
HI, I am working with PIC16F877A to operate a motor using a temperature sensor (LM35DZ) reading in Deg Celcius with output 10mV = 1C, as far as I know, it needs LM358 (operational amplifier). Does any body have experience how to connect these components to the PIC? Is there any other technique being used for this purpose? Help me please....
Re: Temperature sensor to OP Amps
Posted: Fri Feb 05, 2010 7:23 am
by medelec35
If you use a 10 Bit ADC (ReadAsInt) then Resolution is approx 4.9mV. Or have though of a using lower external reference voltage for ADC to increase sensitivity? I believe that requires the FCD file for you chip to be modified. I'm not saying these are better, just a bit eaiser.
Re: Temperature sensor to OP Amps
Posted: Mon Feb 08, 2010 4:48 pm
by Sufre Haji Muhamad
I don't understand what is FCD file, please explain...Thanks.
Re: Temperature sensor to OP Amps
Posted: Tue Feb 09, 2010 2:00 pm
by Benj
FCD files are the definition files used by Flowcode to give specific information about your microcontroller. In v3 the FCD file also contains the code to perform an ADC conversion.