Thermistor NTC 10K Ohm Temperature Sensor

🌡️ Thermistor NTC 10K Ohm – Temperature Sensor (Negative Temperature Coefficient)

The NTC 10K Thermistor is a highly sensitive temperature-sensing resistor whose resistance decreases as temperature increases. It's widely used for temperature measurement, environmental monitoring, battery protection, and Arduino/ESP32 projects. The 10KΩ resistance at 25°C makes it a standard choice for many control and automation systems.

⚙️ Technical Specifications

✅ Features

• 🌡️ Highly sensitive to temperature changes

• ⚙️ Standard 10KΩ resistance – compatible with most microcontrollers

• 🛠️ Easy to use in analog input circuits with voltage dividers

• 🔧 Compact, durable, and low-cost temperature sensing solution

• 💡 Ideal for Arduino, ESP32, Raspberry Pi, or smart HVAC

🧠 How to Use with Arduino

Use the thermistor in a voltage divider with a 10K resistor:

 VCC (5V)
   |
  [10K Resistor]
   |
   |--------> A0 (Analog Input)
   |
 [NTC 10K Thermistor]
   |
  GND

🧪 Sample Arduino Code

int thermistorPin = A0;
float R1 = 10000.0; // 10K resistor
float B = 3950;     // B-value
float T0 = 298.15;  // 25°C in Kelvin

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(thermistorPin);
  float R = R1 * (1023.0 / val - 1.0);
  float temperatureK = 1.0 / (1.0/T0 + (1.0/B) * log(R / R1));
  float temperatureC = temperatureK - 273.15;
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
  delay(1000);
}

🎥 YouTube Tutorial

📺 How to Use NTC Thermistor with Arduino