Week 7

I was inspired by smart Home Systems, when the room gets dark the lights go on & the alarm goes beep beep, so I tried to create a system that gives a warning & turns the lights on when it gets dark. 

Software

Tools

Materials

Designing 

1- install all materials we are going to use 

• Arduino Uno.

• jumpers.

• USB cable.

• Green LED.

• Resistor.

• breadboard.

• LDR sensor.

• Buzzer.

• ON/OFF Switch.

2- Connect all components on the breadboard (Parallel).

3- start the  STIMULATION .feature to make sure every component is working.

// HERE IS THE EXPLANATION OF EACH PIN 

int LDRInput = 5;  

int LED = 2;

int BUZZER = 3;

int BUTTON = 4;

void setup() {

// HERE IS DECLARING OF INPUT & OUTPUT

  Serial.begin(9600);

  pinMode(LDRInput, INPUT);

  pinMode(BUTTON, INPUT_PULLUP);

  pinMode(LED, OUTPUT);

  pinMode(BUZZER, OUTPUT);

}

void loop() {

  // int value = analogRead(LDRInput);  //Reads the Value of LDR(light).

  Serial.println("LDR value is :");  //Prints the value of LDR to Serial Monitor.

  Serial.println(digitalRead(5));

  Serial.println("BUTTON VAlue is :");  //Prints the value of LDR to Serial Monitor.

  Serial.println(digitalRead(4));

  delay(1000);

  if (digitalRead(BUTTON) == LOW) { // HERE IS THE LOOP START WITH CHECKING IF THE BUTTON IS WORKING OR NOT

    if (digitalRead(5) == HIGH) { // IF THE BUTTON IS ON SYSTEM START WITH THE LDR SENSOR IF IT SENSE DARKNESS 

      digitalWrite(LED, HIGH);     //The LED turns ON in Dark.

      digitalWrite(BUZZER, HIGH);  //The LED turns ON in Dark.

      delay(100);

      digitalWrite(BUZZER, LOW);  //The BUZZER turns OFF in Dark.

    } else {// IF THE BUTTON IS OFF SYSTEM EVERTHING WILL STOP

      digitalWrite(LED, LOW);     //The LED turns OFF in Light.

      digitalWrite(BUZZER, LOW);  //The LED turns ON in Dark.

    }

  }

}

I got a nice problem I thought when I connected both the Analog pin & Digital pin in LDR and then set Analog Read only in Coding it going to help me to turn the lights on/off 

so I Consider only the Analog Read but when I Start verifying everything going good then I uploaded the code on Arduino here comes the problem I could light the LED 

    if (analogRead(5) == HIGH) {

Then Ibrahim and Menna, Helped me with understanding how the LDR Sensor works then we change the code and consider only Digital Read, then it works nice.

    if (digitalRead(5) == HIGH) {

I Wish I had pics of the whole situation but unfortunately  

I Learned how to design a circuit and code it with tinker cad to know how to design & code electrical circuits by using Arduino IDE, it is going to help me to code my final project.