Hi,
At the moment I cannot upload a picture of the physical setup, but I am attaching an image with the connections I have on the circuit on the perforated board.
Each resistor R has the value 1000 Ohms, and the RTD is rated at 1000 Ohms at zero degrees celcius.
I didn't mention before but I am getting the arduino A0 and A1 pins from a shield (Velleman VMA205) that does Wifi. I use it to send the temperature values to a linux host that in turn inserts them in a MYSQL database.
I could arrange a reference value to adjust the value I get from the sensor (like measuring the temperature with a thermometer and adding/subtracting the difference to the value I get on the analog pins), but I wanted to know if there is some other way of getting a more accurate value.
Thanks,
Regards