Project I - 1. Traffic Light Simulator (Arduino Uno Based)

Traffic Light Simulator

This tool will simulate how traffic light can work with 4 sides of the road. The principle is the same as the existing traffic light on the street, when the green light is lit then 3 other road segment red lights are on. After 30 seconds the green light turns off and replaces the yellow light for 5 seconds and another red light is still on. Then the red light lights up all at the same time for 3 seconds, then change the next segment that turns clockwise. Well because it is still a simulation then the pause of life and the death of lights made faster than the real

This tool is built from Arduino UNO as the main system & controller of the system. Red, yellow and green LEDs are used as a traffic light simulation. The traffic light lighs up on the set time of the program.

Hardware Requirement

•  4 LED with Red Colour
• 4 LED  with Yellow Colour
• 4 LED  with Green Colour
• Arduino
• Power supply +5Volt

Block diagram

           H --> Green LED

           K --> Yellow LED

           M --> Red LED

Schematic

Arduino Uno and LED Wiring

Source Code / Sketch

void setup() {

//------------------pin 2 s/d pin 13 sebagai dig output

for(char i=2;i<14;i++){

pinMode(i, OUTPUT);

}

//------------------Matikan semua LED

for(char i=2;i<14;i++){

digitalWrite(i, 0);

}

//--------Hidupkan H1 + M2 + M3 + M4

digitalWrite(2,1);

digitalWrite(7,1);

digitalWrite(10,1);

digitalWrite(13,1);

}

void loop() {

//-------------H1 + M2 + M3 + M4 ON

digitalWrite(2,1);

digitalWrite(3,0);

digitalWrite(4,0);

delay(5000);

//-------------K1 + M2 + M3 + M4 ON

digitalWrite(2,0);

digitalWrite(3,1);

digitalWrite(4,0);

delay(2000);

//-------------M1 + M2 + M3 + M4 ON

digitalWrite(2,0);

digitalWrite(3,0);

digitalWrite(4,1);

delay(1000);

//-------------M1 + H2 + M3 + M4 ON

digitalWrite(5,1);

digitalWrite(6,0);

digitalWrite(7,0);

delay(5000);

//-------------M1 + K2 + M3 + M4 ON

digitalWrite(5,0);

digitalWrite(6,1);

digitalWrite(7,0);

delay(2000);

//-------------M1 + M2 + M3 + M4 ON

digitalWrite(5,0);

digitalWrite(6,0);

digitalWrite(7,1);

delay(1000);

//-------------M1 + M2 + H3 + M4 ON

digitalWrite(8,1);

digitalWrite(9,0);

digitalWrite(10,0);

delay(5000);

//-------------M1 + M2 + K3 + M4 ON

digitalWrite(8,0);

digitalWrite(9,1);

digitalWrite(10,0);

delay(2000);

//-------------M1 + M2 + M3 + M4 ON

digitalWrite(8,0);

digitalWrite(9,0);

digitalWrite(10,1);

delay(1000);

//-------------M1 + M2 + M3 + H4 ON

digitalWrite(11,1);

digitalWrite(12,0);

digitalWrite(13,0);

delay(5000);

//-------------M1 + M2 + M3 + K4 ON

digitalWrite(11,0);

digitalWrite(12,1);

digitalWrite(13,0);

delay(2000);

//-------------M1 + M2 + M3 + M4 ON

digitalWrite(11,0);

digitalWrite(12,0);

digitalWrite(13,1);

delay(1000);

}

How it works

1. all of the red LED will light up within 1 second.
2. The green LED 1 (H1) will light up within 5 seconds.
3. and the yellow LED (K1) will light up within 2 seconds.
4. After that the system will loop so the red LED lights back on in 1 second.

5. Then it will change on the side of the 2nd lamp continuously with clockwise rotation.



Video for Project I - 1. Traffic Light Simulator (Arduino Uno Based)

Download the required file.