Description

The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from the room temperature and ±¾°C over a full 55°C to +150°C temperature range.

Technical parameters:

• Operates from 4 to 30 V
• Less than 60-µA Current Drain
• Low Self-Heating, 0.08°C in Still Air
•  Nonlinearity Only ±¼°C Typical

Getting started with the LM35D Digital Temperature Sensor Linear Module

Now make your own temperature sensor by Arduino and LM35 digital temperature Sensor

Hardware required

• Arduino Uno
• LM35 Digital temperature sensor
• Jumper wire
  

   

Connecting the Hardware

Connect the LM35 Digital temperature sensor to the arduino UNO as shown below.

Sample Code

void setup()
{
Serial.begin(9600);//Set Baud Rate to 9600 bps
}
void loop()
{ int val;
int dat;
val=analogRead(0);//Connect LM35 on Analog 0
dat=(500 * val) /1024;;
Serial.print(“Temp:”); //Display the temperature on Serial monitor
Serial.print(dat);
Serial.println(“C”);
delay(500);
}

NOTE: If you get stray error the problem is with your “and” characters .Replace them with ordinary quotes “. And you should be fine.

Results

Open the Serial Monitor from (Tools>>Serial Monitor), you will see the temperature in serial monitor.