Alat yang kalian perlu persiapkan adalah aplikasi yang mensupport arduino uno seperti Arduino IDE, atau kalian bisa coding online di wokwi
nahhh, berikut adalah code yang bisa kalian coba untuk membuat alarm kalian sendiri, kalian juga bisa memodifikasi sesuai kebutuhan kalian
#include <Adafruit_LiquidCrystal.h>
Adafruit_LiquidCrystal lcd(0);
unsigned long previousMillis = 0;
const long interval = 1000;
void setup()
{
Serial.begin(9600);
pinMode(1, OUTPUT);
pinMode(2, OUTPUT);
pinMode(4, OUTPUT);
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("TEMP SENSOR SUHU");
delay(1000);
lcd.clear();
}
void loop()
{
String message;
long frequency;
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
float tegangan, degC, input,degF;
input = (analogRead(A3) - 20) * 3.04;
tegangan = input* 5/1024;
degF= (degC*1.8)+32;
degC = map(input, 0, 1023, -40, 125);
//lcd.clear();
int value = map(analogRead(A3), 0, 1023, 0, 1000);
if (degC<15) {
digitalWrite(1, LOW);
digitalWrite(2, LOW);
digitalWrite(4, HIGH);
lcd.setCursor(0,0);
lcd.print("SUHU DINGIN");
}
else if (degC >= 15 && degC <= 25) {
digitalWrite(1,LOW);
digitalWrite(2,LOW);
digitalWrite(4,HIGH);
lcd.setCursor(0,0);
lcd.print("SUHU SEJUK");
}
else if (degC >= 26 && degC <= 40) {
digitalWrite(1,HIGH);
digitalWrite(2,LOW);
digitalWrite(4,LOW);
lcd.setCursor(0,0);
lcd.print("SUHU PANAS");
}
else if (degC >= 41 && degC <= 55) {
digitalWrite(1,LOW);
digitalWrite(2,HIGH);
digitalWrite(4,LOW);
lcd.setCursor(0,0);
lcd.print("SUHU SGT PANAS");
}
else {
digitalWrite(1,LOW);
digitalWrite(2,HIGH);
digitalWrite(4,LOW);
lcd.setCursor(0,0);
lcd.print("AWAS KEBAKARAN");
}
lcd.setCursor(0,1);
lcd.print(degC);
lcd.print("\xB0\C/");
lcd.print(degF);
lcd.print("\xB0\F");
}
}