Arduino Traffic Light Controller Project with Circuit Diagram and Code PDF

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Arduino Based 3-Way Traffic Light Controller (/microcontroller-projects/arduino-traffic-light-controllerproject) By (page_author.html)Antony Jackson (/users/antony-jackson)  Aug 08, 2017

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Arduino Based 3-Way Trac Light Controller

We all know about Arduino. It is one of the most popular open source micro controller board which is highly useful for doing DIY projects. This Arduino based 3-Way Trac Light Controller is a simple Arduino DIY project (https://circuitdigest.com/arduinoprojects) which is useful to understand the working of trac lights which we see around us. We have covered a more simpler version of trac lights in this trac light circuit (https://circuitdigest.com/electronic-circuits/four-way-trac-light-circuit). demonstrated it for 3 sides or ways. Now let’s get into the project… This website uses cookies to improve user experience. By using the website you are giving OK, I Understand  your consent to set cookies. For more information, read our cookie policy (https://circuitdigest.com/cookie-policy) and privacy policy (http://circuitdigest.com/privacy-policy).

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Components Required: 1. 3*Red LED Lights 2. 3*Green LED Lights 3. 3*Yellow LED Lights 4. 3*220ohm Resistors 5. Breadboard 6. Male To Male Connectors 7. Arduino Uno With Ide Cable 

Circuit Explanation: The circuit Diagram for Arduino Trac Light Controllerproject is given below:

(/fullimage?

i=circuitdiagram_mic/Arduino-based-3-way-Trac-light-controller-circuit-diagram.png) It’s pretty simple and can be easily built on bread board as explained in below steps: 1. Connect the LEDs in the order as Red, Green, and Yellow in the breadboard. 2. Place the negative terminal of the LEDs in common and connect the 220ohm resistor in series. 3. Connect the connector wires accordingly. 4. Connect the other end of the wire to the Arduino Uno in the consecutive pins(2,3,4…10)



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Program and Working Explanation: The code for this Arduino Trac Light Controller Project is simple and can be easily understood. Here we have demonstrated Trac lights for the 3 ways road and the code glows LED’s on all the three sides in a particular sequence, in which the actual Trac Lights works. Like, at a time, there will be two Red signals on any of the two sides and one Green light on the remaining side. And yellow light will also glow, for 1 second each time, in between transition from Red to Green, means rst red light glows for 5 second then yellow light glows for 1 second and then nally green light will be turned on.  In the program, rst we have declared pins (2,3…10) as output in void setup() for 9 LEDs (three on each side i.e. forward, right and left side).            }

void setup() { // configure the output pins pinMode(2,OUTPUT); pinMode(3,OUTPUT); pinMode(4,OUTPUT); pinMode(5,OUTPUT); pinMode(6,OUTPUT); pinMode(7,OUTPUT); pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT);

 Then in void loop() function we have written the code for trac lights to be turned on and off in sequence as mentioned above. void loop() { digitalWrite(2,1); //enables the 1st set of signals digitalWrite(7,1); digitalWrite(10,1); digitalWrite(4,0); digitalWrite(3,0); digitalWrite(6,0); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(5,0); delay(5000); ..... .... ..... ....

 This process is well demonstrated in the Video Below. First the upside/forward side is opened (green), while the other two sides (i.e. left side and right side) remains closed with Red signal, with a delay of 5 seconds. Then the yellow light gets turned on at the right side for 1sec followed by the Green light, leaving other two sides (i.e. upside and left side is red) closed with Red Light and 5seconds delay. Then yellow on the left side glows for 1sec followed by green one, leaving upside and right side Red with 5sec delay. This process is looped in void loop() function for continuous process. Here we can modify delays for which the Red, yellow and Green light remain on and Thisoff. website uses cookies to improve user experience. By using the website you are giving your consent to set For more information, read our cookie policybelow. The complete Arduino code andcookies. Video for this Arduino Trac Light Project is given (https://circuitdigest.com/cookie-policy) and privacy policy Code (http://circuitdigest.com/privacy-policy).

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 void setup() {  // congure the output pins  pinMode(2,OUTPUT);  pinMode(3,OUTPUT);  pinMode(4,OUTPUT);  pinMode(5,OUTPUT);  pinMode(6,OUTPUT);  pinMode(7,OUTPUT);  pinMode(8,OUTPUT);  pinMode(9,OUTPUT);  pinMode(10,OUTPUT); }  void loop() {  digitalWrite(2,1); //enables the 1st set of signals  digitalWrite(7,1);  digitalWrite(10,1);  digitalWrite(4,0);  digitalWrite(3,0);  digitalWrite(6,0);  digitalWrite(8,0);  digitalWrite(9,0);  digitalWrite(5,0);  delay(5000);   digitalWrite(3,1); //enables the yellow lights  digitalWrite(6,1);  digitalWrite(2,0);  digitalWrite(7,0);  delay(1000);   digitalWrite(4,1); //enables the 2nd set of signals  digitalWrite(5,1);  digitalWrite(10,1);  digitalWrite(2,0);  digitalWrite(3,0);  digitalWrite(6,0);  digitalWrite(8,0);  digitalWrite(9,0);  digitalWrite(7,0);  delay(5000);This website uses cookies to improve user experience. By using the website you are giving

your consent to set cookies. For more information, read our cookie policy (https://circuitdigest.com/cookie-policy) and privacy policy  digitalWrite(9,1); //enables the yellow lights (http://circuitdigest.com/privacy-policy). 

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 digitalWrite(6,1);  digitalWrite(10,0);  digitalWrite(5,0);  digitalWrite(4,0);  delay(1000);   digitalWrite(8,1); //enables the 3rd set of signals  digitalWrite(4,1);  digitalWrite(7,1);  digitalWrite(2,0);  digitalWrite(3,0);  digitalWrite(5,0);  digitalWrite(6,0);  digitalWrite(9,0);  digitalWrite(10,0);  delay(5000);   digitalWrite(9,1); //enables the yellow lights  digitalWrite(3,1);  digitalWrite(7,0);  digitalWrite(8,0);  digitalWrite(4,0);  delay(1000);  }

Video Arduino Based 3-Way Trac Light Controller

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ARDUINO UNO (/TAGS/ARDUINO-UNO)

ARDUINO (/TAGS/ARDUINO)

TRAFFIC LIGHT (/TAGS/TRAFFIC-LIGHT)

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COMMENTS Jen Oct 15, 2017 I have an HCS12 microcontroller. Can I use my board to make this? How would I adjust the code or does it Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments even need to be adjusted?

Aswinth Raj (/users/aswinth-raj) Oct 16, 2017 (/users/aswinth-raj)

HCS12 is very different from Arduino the whole code has to be changed

Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments sakthi Feb 25, 2018

This website uses cookies to improve user experience. By using the website you are giving your consent to set cookies. For more information, read our cookie policy i have nucleoF030R8 embedded.can I apply this idea on it? (https://circuitdigest.com/cookie-policy) and privacy policy (http://circuitdigest.com/privacy-policy).

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Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments Aswinth Raj (/users/aswinth-raj) Feb 26, 2018 (/users/aswinth-raj)

Sure you can

Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments Sumanth P Mar 02, 2018 Hey can I interface lcd with trac light controller using arduino(without using I2C lcd module) so that I can Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments display the comments.Stop-when red leds are on,Go- when green leds are on,Ready-when orange leds are on(this things should be displayed simultaneously on the lcd).I tried this experiment but the pins are not enough to connect the lcd pins as 9 leds has occupied from 3 to 10 digital pins.If I connect the lcd pins to analog pins it's not working. So my question is can I connect the lcd pins to to analog pins on the arduino board to display the comments as I mentioned above? If it's not possible ,then how can I connect lcd pins to arduino? Plz reply me a.s.a.p

Aswinth Raj (/users/aswinth-raj) Mar 05, 2018 (/users/aswinth-raj)

Yes you can use the analog pins on arduino as digital pins and so you can also

Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments interface LCD with it

Malay Mohapatra Mar 21, 2018 Can we make the program quite short by using the Ports in program ? Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments Aswinth Raj (/users/aswinth-raj) Mar 22, 2018 (/users/aswinth-raj) Ofcourse yes port manipulation will save a lot of digitalWrite functions. Here is a Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments link which tells how to use port handling in Arduino This website uses cookies to improve user experience. By using the website you are giving

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Neo Apr 10, 2018 pls can an Arduino Nano be used for this circuit Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments Aswinth Raj (/users/aswinth-raj) Apr 15, 2018 (/users/aswinth-raj)

Yes Arduino nano can be used

Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments zak May 26, 2018 if pins are not enough to connect lcd pins try to connect shift register to extend pins instead of connecting Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments digital pins on arduino to analog pins

rajesh Jun 15, 2018 hello can these codes be modied to work with a ultrasonic sensor so as to change the lights based on trac Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments density?

AISHA (/users/aisha-0) Jun 18, 2018 (/users/aisha-0) Yes it can be Log in (/user/login?destination=node/1001%23comment-form) or register (/user/register? destination=node/1001%23comment-form) to post comments

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