KS0310 Keyestudio Traffic Light Module (Black and Eco-friendly)

Keyestudio Traffic Light Module (Black and Eco-friendly)

Introduction

When learning the microcontroller, you may usually use three LEDs, namely red, green and yellow light to simulate the traffic light blinking via external connection. So we specially design this module which is very convenient for wiring, and on the module you can see the red, yellow and green LED. This module is fully compatible with Arduino microcontroller and raspberry pi system.

Specification

• Working Voltage: 3.3-5v
• Interface Type: digital
• PH2.54 Socket
• Enable interaction with light-related works

Connection Diagram

Sample Code

int redled =5; // initialize digital pin 5.
int yellowled =4; // initialize digital pin 4.
int greenled =3; // initialize digital pin 3.
void setup()
{
pinMode(redled, OUTPUT);// set the pin with red LED as “output”
pinMode(yellowled, OUTPUT); // set the pin with yellow LED as “output”
pinMode(greenled, OUTPUT); // set the pin with green LED as “output”
}
void loop()
{
digitalWrite(greenled, HIGH);//// turn on green LED
delay(5000);// wait 5 seconds
digitalWrite(greenled, LOW); // turn off green LED
for(int i=0;i<3;i++)// blinks for 3 times
{
delay(500);// wait 0.5 seconds
digitalWrite(yellowled, HIGH);// turn on yellow LED
delay(500);// wait 0.5 seconds
digitalWrite(yellowled, LOW);// turn off yellow LED
} 
delay(500);// wait 0.5 seconds
digitalWrite(redled, HIGH);// turn on red LED
delay(5000);// wait 5 seconds
digitalWrite(redled, LOW);// turn off red LED
}

Test Result

Done uploading the code, powered up, three LEDs on the module will automatically simulate the traffic light running.