R1 and R2 are the sense resistors on your electronics. Most electronics only have R2, which is 4.7Kohm as standard. So set R1 to 0, R2 to 4700, and let it run.
Also, the newer script from this article:
[hydraraptor.blogspot.co.uk]
Gives more accurate results over a wide range. Here, rp is the sense resistor, r0,1,2 and t0,1,2 are three temperature/resistance pairs. You can get those from the datasheet, or measure them accurately if you have the right instruments.
Also, the newer script from this article:
[hydraraptor.blogspot.co.uk]
Gives more accurate results over a wide range. Here, rp is the sense resistor, r0,1,2 and t0,1,2 are three temperature/resistance pairs. You can get those from the datasheet, or measure them accurately if you have the right instruments.