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LM35 temperature sensor

5 ₪

الناشر: يوكتويوتا للقطع الالكترونية والصناعية

القسم: مستشعرات - سينسور

تاريخ النشر: 2021-02-03



Definition

A temperature is an objective comparative measure of hot or cold. It is measured by a thermometer, Several scales and units exist for measuring temperature, the most common being Celsius (denoted °C; formerly called centigrade), Fahrenheit (denoted °F), and, especially in science, Kelvin (denoted K).





Sensor Output:

Sensor gives linear + 10.0 mV/°C scale factor, as per that we have set the calibration in program Vref=5V ADC Count for 1°C = 10m/(5/1024) = 2.048 Temperature=ADC Count/2.048





Arduino Circuit for Temperature measurement





Arduino Code for Temperature measurement

code
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/*
  Temperature Measurement:
  Reads an analog input on pin A0, converts it to Temperature, and prints the   result to the serial monitor.
  Graphical representation is available using serial plotter 
  (Tools > Serial Plotter menu)
  Attach the LM35 Temperature Sensor as shown in Circuit.
*/

// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0, we have connected LM35 Output
  int sensorValue = analogRead(A0);
  
  // Convert the analog reading (which goes from 0 - 1023) to a Temperature:
  float Temperature = sensorValue / 2.048;
  
  // print out the value you read:
  Serial.print("Temperature:");
  Serial.println(Temperature);
  delay(1000);
}




OR you can use LIBRARY : download



code for lib:

code
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#include <LM35.h>

LM35 sensor(0);

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

void loop() {
  Serial.println(sensor.getTemp()); // Temp in celcius
  delay(1000);
}




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