2 · Inputs & sensors
Thermistor: measuring temperature
Advanced25 min
Goal
Convert an NTC resistance into degrees Celsius.
Why it matters
Going from a physical quantity to a usable value requires a maths model (Steinhart-Hart / Beta).
Steps
- 01Read the divider voltage on A0.
- 02Compute the resistance R = R0 · (1023/value − 1).
- 03Apply the Beta formula to get kelvins, then °C.
- 04Print the temperature.
This tutorial runs inside the Circuitly simulator: your wiring and your code are checked automatically at every step.
Next tutorials
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- Convert to volts (map & float)
Turn the ADC's 0–1023 into a 0.00–5.00 V reading.