I need to calculate the temperature of the bud with the SF-110 sensor.
As you can see on page 10, there is the diagram of the divider. (Termistance with 24.9K resistance)
I am interrested to use that library SmoothTermistor with 3.3V cirtcuit and HREF
I have a doubt about that section . There are two value of rsistance
- the nominal resistance
- the series resistance
I suppose the serie resistance value should be replace with 249000, but if that's right, what about the nominal resistance?
And what abour the beta coefficient? The SF-110 doc says
where A = 1.129241 x 10-3, B = 2.341077 x 10-4, and C = 8.775468 x 10-8(Steinhart-Hart coefficients)
Someone has an experience about coefficent. I am confused about Beta coefficient and Steinhart-Hart coefficients
Hope, there are scientists around