Question

Write an Arduino code to read the current temperature using the LM35 temperature sensor. The code should include the following if the temperature is more than 45 "C: • Turn ON red LED, and after 1 second turn ON the yellow LED, and after another 2 seconds tum On the Green LED. One second later the three LEDS should start blinking (all LEDs OFF for 0.5 seconds, then all LEDS ON for 1 minute), and turn OFF all LEDs after that. Otherwise, • The Green LED should be blinking (3 minutes ON then 1 second OFF). Based on these points and diagram below, make sure to include everything needed when writing the Arduino code. O CO UNO AMBUINO T

Answer 1

void setup() {

pinMode(A0, INPUT);

pinMode(9, OUTPUT);

pinMode(10, OUTPUT);

pinMode(11, OUTPUT);

Serial.begin(9600);

}

void loop() {

int sensor = analogRead(A0);

float voltage = (sensor / 1024.0) * 5.0;

float tempC = (voltage - .5) * 100;

float tempF = (tempC * 1.8) + 32;

Serial.print("temp: ");

Serial.print(tempF);

If(tempF > 45){

digitalWrite(9, HIGH);

delay(1000);

digitalWrite(10, HIGH);

delay(2000);

digitalWrite(11, HIGH);

delay(1000);

digitalWrite(9, LOW);

digitalWrite(10, LOW);

digitalWrite(11, LOW);

Delay(500);

digitalWrite(9, HIGH);

digitalWrite(10, HIGH);

digitalWrite(11, HIGH);

delay(60000);

digitalWrite(9, LOW);

digitalWrite(10, LOW);

digitalWrite(11, LOW);

}

else

{
digitalWrite(11, HIGH);

delay(180000);

digitalWrite(11, LOW);

delay(1000);

}