Week 8

The idea of the assignment for this week is to communicate wirelessly with a Smart Circuit via a Graphical User Interface (GUI) on 

The idea is to make a circuit with two components. I choose to make a simple circuit with led and buzzer.

 This circuit  maybe can be on a large scale in a waking system that controls all lights in the room and makes a buzz to wake the person by Bluetooth.

Software

Materials

Designing 

1- install all materials we are going to use 

• Arduino Uno.

• jumpers.

• USB cable.

• Green LED.

• Resistor.

• breadboard.

• Bluetooth sensor.

• Buzzer.

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

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

Coding

char recData = '0';

#define LED 13 // definition of pin number for LED.

#define BUZZER 12// definition of pin number for BUZZER.

void setup() {

  Serial.begin(9600);

  pinMode(LED, OUTPUT);

  pinMode(BUZZER, OUTPUT);

}

void loop() { //To light the LED with mobile 

  while (Serial.available() == 0)

    ;

  recData = Serial.read();

  Serial.println(recData);

  if (recData == '1') { //  TO light the LED ONLY

    digitalWrite(LED, HIGH);

    digitalWrite(BUZZER, LOW);

  } else if (recData == '2') {//  TO light the BUZZER ONLY

    digitalWrite(LED, LOW);

    digitalWrite(BUZZER, HIGH);

  } else {//  TO TURN OFF ALL when I click any other buttons // To stop the loop if no signal is sent from mobile

    digitalWrite(LED, LOW);

    digitalWrite(BUZZER, LOW);

  }

}

I connect the +ve wire of LED to pin 13 & -ve wire of LED to pin GND on a GND of Arduino, +ve wire of buzzer to pin 12 & -ve wire of buzzer to pin GND on a GND of Arduino, and As in the previous pic, I connect Bluetooth sensor.

circuit after connecting it

char recData = '0';

#define LED 13 // definition of pin number for LED.

#define BUZZER 12// definition of pin number for BUZZER.

void setup() {

  Serial.begin(9600);

  pinMode(LED, OUTPUT);

  pinMode(BUZZER, OUTPUT);

}

void loop() { 

  while (Serial.available() == 0)

    ;

  recData = Serial.read();

  Serial.println(recData);

  if (recData == '1') { //  TO light the LED ONLY

    digitalWrite(LED, HIGH);

    digitalWrite(BUZZER, LOW);

  } else if (recData == '2') {//  TO light the BUZZER ONLY

    digitalWrite(LED, LOW);

    digitalWrite(BUZZER, HIGH);

  } else {//  TO TURN OFF ALL when I click any other buttons

    digitalWrite(LED, LOW);

    digitalWrite(BUZZER, LOW);

  }

}

I didn't remember that I should remove TX (transmission) and RX (receiver) pinouts the Bluetooth sensor from the Arduino and upload the code then connect it to the Arduino, my colleague mina who helped me to remember that.

I Learned how to control any component with Bluetooth, it is going to help me to control my final project with Bluetooth.