NTCTemp Library

Universal NTC thermistor temperature library for Arduino-compatible microcontrollers.

Supported Boards

• Arduino UNO
• Arduino Nano
• Arduino Mega
• Arduino Leonardo
• ESP32
• ESP8266
• Raspberry Pi Pico / RP2040
• STM32
• NRF52
• SAMD Boards
• ATtiny Boards
• Other Arduino-compatible microcontrollers

---

Features

• Read Celsius temperature
• Read Fahrenheit temperature
• Custom Beta coefficient support
• Custom nominal temperature support
• Custom ADC resolution support
• Lightweight and fast
• Easy to use

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Installation

1. Download the library ZIP
2. Extract the ZIP file
3. Move the NTCTemp folder to:

Documents/Arduino/libraries/

4. Restart Arduino IDE

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Basic Example

#include <NTCTemp.h>

// NTCTemp(pin, ntcResistance, seriesResistance)
NTCTemp ntc(34, 10000, 10000);

void setup() {

  Serial.begin(115200);
}

void loop() {

  Serial.print("Celsius: ");
  Serial.println(ntc.getCelsius());

  Serial.print("Fahrenheit: ");
  Serial.println(ntc.getFahrenheit());

  delay(1000);
}

---

Advanced Example

#include <NTCTemp.h>

// NTCTemp(
//   pin,
//   ntcResistance,
//   seriesResistance,
//   betaValue,
//   nominalTemp,
//   adcMax
// )

NTCTemp ntc(
  34,
  10000,
  10000,
  3950,
  25.0,
  4095
);

void setup() {

  Serial.begin(115200);
}

void loop() {

  Serial.print("Celsius: ");
  Serial.println(ntc.getCelsius());

  Serial.print("Fahrenheit: ");
  Serial.println(ntc.getFahrenheit());

  delay(1000);
}

---

Constructor

NTCTemp(
  pin,
  ntcResistance,
  seriesResistance,
  betaValue,
  nominalTemp,
  adcMax
);

---

Circuit Diagram

                 3.3V 
                  |
                  |
               [ NTC ]
                  |
                  +-------> Analog Pin
                  |
             [ Resistor ]
                  |
                  |
                 GND

---

Wiring

Component	Connection
NTC one side	VCC
NTC other side	Analog pin
Resistor one side	Analog pin
Resistor other side	GND

Creates a voltage divider circuit.

---

Default Values

Parameter	Default
Beta Coefficient	3950
Nominal Temperature	25°C
ADC Max Value	4095

---

Library Structure

NTCTemp/
│
├── src/
│   ├── NTCTemp.h
│   └── NTCTemp.cpp
│
├── examples/
│   ├── TempRead/
│   │   └── TempRead.ino
│   │
│   └── CustomTemp/
│       └── CustomTemp.ino
│
├── library.properties
├── README.md
├── LICENSE
└── keywords.txt

---

License

MIT License

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Author

Abdul Rafeul Mallick

GitHub: https://github.com/Rafeul1997