8. LED Blink

How do you plan to solve it?

 connect resistor with 320 ohm, in series with LED with voltage drop of 1.8V.

then write following code

void setup(){

pinMode(4,OUTPUT);

}
void loop(){

digitalWrite(4,HIGH);

delay(400);

digitalWrite(4,LOW);

delay(800);

}

/*Paste your code here*/
void setup(){

pinMode(4,OUTPUT);

}
void loop(){

digitalWrite(4,HIGH);

delay(400);

digitalWrite(4,LOW);

delay(800);

}

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