1） Description
LM35 is a commonly used and easy-to-use temperature sensor component. It only requires one LM35 component and can be connected to a single analog interface. The difficulty lies in the algorithm to convert the read analog value into the actual temperature.
2） Required Components
Through-hole LM35 *1
Breadboard *1
Breadboard jumper wires *1 pack
3） Wiring Diagram
4） Reference Source Code:
int potPin = 1; //Define analog interface 1 connected to LM35 temperature sensor
void setup()
{
Serial.begin(9600);//Set baud rate
}
void loop()
{
int val;//Define variable
int dat;//Define variable
val=analogRead(0);// Read the analog value from the sensor and assign it to val
dat=(125*val)>>8;//Temperature calculation formula
Serial.print(“temperature is”);//Output displayTep string represents temperature
Serial.println(dat);//Output displaydat value
//Serial.println(“C”);//Output displayC string
delay(100);//Delay0.1 seconds
}
After downloading the program, open the monitor window to see the current temperature.
