Temperature reading using an Arduino and a sensor LM35DZ
A tutorial is a method of processing a temperature sensor LM35DZ using the Arduino module.
In this example we used the following elements:
Connect the sensor with Arduino:
The sensor using the Arduino you should connect the layout as follows:
| Sensor | Pin Arduino |
|---|---|
| GND | GND |
| Signal | A1 |
| Vcc | 5 V |
The connection scheme of sensor with the Arduino Uno.
Program for Arduino
In the example, we used the following code:
int sensor = A1; //analog pin A1 is connected to the signal from the sensor
float VOLTS;
float TEMP;
void setup(){
Serial.begin(9600); //initialize serial monitor
Serial.println("Test temperature sensor");
}
void loop(){
int reading = analogRead(sensor); //read the value from the sensor
VOLT = (reading * 5.0) / 1024.0; //conversion of the measured value for voltage in volts (for connection at 5 V)
TEMP = VOLT * 100; //conversion from voltage to temperature, the resolution of the sensor is 10 mV per degree
Serial.print("Temperature (C): "); //display it on the monitor
Serial.println(TEMP);
delay(200); //delay between consecutive readings
}
The results of the program can be seen below:
A screenshot of the serial monitor.