Arduino Flowing Light

Arduino Flowing Light Demonstration

Hardware equipment

arduino uno,led10,220 ohm resistor10,several DuPont wires

Circuit connection:

The circuit connection is shown in the figure:

Code display:

The code for flowing light is as follows:

int a,b,i;
void setup() 
{                
for(i=3;i<=12;i++)
  pinMode(i, OUTPUT);//Declare 10 LED lights as outputs
}
void loop() 
{
  for(a=3;a<=12;a++)
  {
  digitalWrite(a, HIGH);  
  delay(50);
  digitalWrite(a, LOW);  
  delay(50);
  }
  // Forward flow
  for(b=12;b>=3;b--)
  {
  digitalWrite(b, HIGH); 
  delay(50);
  digitalWrite(b, LOW);  
  delay(50);
  }//Reverse flow
}

Physical display