Ingredients :
1- LED – RED # 2
2- LED – GREEN # 1
3- Switch #1
4- Wire
5- Resistor 220Ω #3
6- Resistor 10KΩ #1
BUILD THE CIRCUIT
Code:
int KeyState=0;
void setup() {
// put your setup code here, to run once:
pinMode(2, INPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
KeyState=digitalRead(2);
if (KeyState==0){
digitalWrite(3,HIGH);
digitalWrite(4,LOW);
digitalWrite(5,LOW);
}else{
digitalWrite(3,LOW);
digitalWrite(4,HIGH);
digitalWrite(5,LOW);
delay(250);
digitalWrite(4,LOW);
digitalWrite(5,HIGH);
delay(250);
}
}