Smart Signal Light System By Arduino Mega 2560

Introduction:

• In this article I have explained about the Smart Signal Light System using Arduino Mega 2560.
• It is used to generate light correctly.
• It will automatically generate the signals. 

Parts Of Lists:

• Arduino Mega 2560
• Led-3
• Bread Board
• Push Button
• Hookup Wires

Connetions:

Step 1: Connection From LED To Board:

• Connect the LED1 of positive pin to the 03 of the Arduino board.
• Connect the LED2 of positive pin to the 04 of the Arduino board.
• Connect the LED3 of positive pin to the 05 of the Arduino board.
• Connect the LEDS negative pin to the GND commonly. 

Step 2: Connection From PUSHBUTTON To Board:

• Connect the positive pin to the 7 of the Arduino board with the positive side. Connect the 5v of the board.
• Connect the negative side to the GND of the board. 

Programming

int one = 03;
int two = 04;
int three = 05;
int btn = 7;
int state = 0;
void setup()
{
    pinMode(one, OUTPUT);
    pinMode(two, OUTPUT);
    pinMode(three, OUTPUT);
}
void loop()
{
    if (digitalRead(btn))
    {
        if (state == 0)
        {
            setLights(HIGH, LOW, LOW);
            state = 1;
        } else if (state == 1)
        {
            setLights(HIGH, HIGH, LOW);
            state = 2;
        } else if (state == 2)
        {
            setLights(LOW, LOW, HIGH);
            state = 3;
        } else if (state == 3)
        {
            setLights(LOW, HIGH, LOW);
            state = 0;
        }
        delay(1000);
    }
}
void Traffic(int red, int yellow, int green)
{
    digitalWrite(one, red);
    digitalWrite(two, yellow);
    digitalWrite(three, green);
}

Explanation:

• It can glow the lights automatically with the delay times.
• We can set the delay time and watch the LEDs/lights, it changes automatically.
• When the first light glows, the second and third remains off.
• Second light glows the third and first is off.
• Third light glows the first and second is off. 

Output:

  
                                                     Figure 1: Output

 

Read more articles on Arduino:

• Introducing Arduino Nano
• Control The Arduino Board With Windows 10 PC or Mobile