This is a simple circuit of a traffic light controller , this is designed using the tinkerCAD software .

This is a simple working model for the beginners who are learning Robotics . This is my 2nd working model , it is easy to design and work in it .

Step 1: Required Components

Below the following are the components required to make a Traffic Light Controller :

1] Breadboard 1No.

2] Arduino 1No.

3] RGB LEDs 3 No.

4] Resistors 3 No.

5] Connecting Wires 4 No.

Step 2: Assembling

First take 1 Breadboard small and Arduino , now rotate the Breadboard 180 degrees .

Step 3: Connecting Resistors

Take 3 Resistors and rotate it to 90 degree

Now connect it to the breadboard ,Terminal Strips 4th Hole Row [d] to 2nd Terminal Strips 1st Hole Row

Connect the 3 Resistors as shown in the images .

Step 4: Connecting LED Bulbs

Take 3 LED Bulbs in RED , YELLOW and REEN in colors , and rotate it in 90 degrees towards right .

Connect the LED bulbs to the Breadboard as shown in the second image .

Step 5: Connecting Wires

Now, here we are going to connect the wires .

Follow the given video for connecting the wires .

Step 6: Coding

In the whole process coding is the most important one and the last step . Now you to code the program and run them .

This is the code done me to run the Arduino IDE.

// variables

int YELLOW = 9;

int GREEN= 10;

int RED = 8;

int DELAY GREEN = 5000;

int DELAY YELLOW = 2000;

int DELAY RED = 5000;

// basic functions void setup()

{

pinMode(GREEN, OUTPUT);

pinMode(YELLOW, OUTPUT);

pinMode(RED, OUTPUT);

}

void loop()

{

red_light();

delay(DELAY_RED);

yellow_light();

delay(DELAY_YELLOW); delay(DELAY_GREEN);

green_light();

delay(DELAY_GREEN);

}

void green light()

{ digitalWrite(GREEN, HIGH);

digitalWrite(YELLOW, LOW);

digitalWrite(RED, LOW);

}

void yellow_light()

digitalWrite(GREEN, LOW);

digitalWrite(YELLOW, HIGH);

digitalWrite(RED, LOW); }

{

void red_light()

{