Thermistor Steinhart Hart - 3 Points

File:TArduinoThermistor3Points.png

Summary

3-point Steinhart-Hart thermistor module for precise temperature measurement. Converts analog resistance readings to temperature with optional Fahrenheit units.

Description

The Thermistor Steinhart-Hart module uses three reference points to calculate temperature based on thermistor resistance. It supports an optional fixed resistor for voltage divider configuration, conversion to Fahrenheit, and a choice of whether the thermistor is connected to ground. Each point specifies a resistance and corresponding temperature to improve calculation accuracy.

Diagram:

Properties

• Enabled – Enables or disables the thermistor module.
• Fixed Resistor (Ohms) – Fixed resistor value for the voltage divider (default: 10000 Ω).
• In Fahrenheit – Boolean to convert temperature output to Fahrenheit.
• Table (In Fahrenheit) – Boolean to convert input table points to Fahrenheit.
• Points – Calibration points for the thermistor:

 * Item[0] – Resistance: 25395 Ω, Temperature: 5°C  
 * Item[1] – Resistance: 10000 Ω, Temperature: 25°C  
 * Item[2] – Resistance: 4366 Ω, Temperature: 45°C  

• Thermistor To Ground – Boolean flag indicating if thermistor is connected to ground.

Pins

Input Pins

• In (analog) – Analog input from the thermistor voltage divider.

Output Pins

• Out (analog) – Analog output representing calculated temperature.

Categories

• File:TArduinoSensorCategory.png Category Sensor – Sensor components.
• File:TArduinoAnalogCategory.png Category Analog – Analog measurement devices.