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Course

I am Roboscientist Grade 8

Elaborate 2: Scattering Pattern with LEDs

Objective:

Blink Five LED in scattering Pattern

Schematics:

Connections:

Reference Picture:

Ardublock

Click on Ardublock to open the Ardublock window and put the following blocks together.

Arduino Code

void setup(){
    pinMode(2,OUTPUT);  //Set pins D2 to D6 as outputs
    pinMode(3,OUTPUT);
    pinMode(4,OUTPUT);
    pinMode(5,OUTPUT);
    pinMode(6,OUTPUT);
}
void loop(){
    digitalWrite(4,HIGH); //Turn ON middle LED
    delay(1000);    
    digitalWrite(3,HIGH); //Turn ON next 2 LEDs
    digitalWrite(5,HIGH);
    delay(1000);          
    digitalWrite(2,HIGH);  //Turn ON next 2 LEDs
    digitalWrite(6,HIGH); 
    delay(1000);
    digitalWrite(2,LOW);   //Turn OFF all LEDs
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
    digitalWrite(5,LOW);
    digitalWrite(6,LOW);
    delay(1000);
}

Output

Upload the following program on Arduino after connecting the Arduino to laptop and making changes in board and port tab, you will see the 5 LED in scattering pattern

Explanation:

We start by lighting only the center LED. Then we turn on its neighbors. Then we light the end LEDs. The we switch everything off and repeat the step over.

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