// the setup function runs once when you press reset or power the boardvoid setup() { // initialize digital pin 13 as an output. pinMode(13, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second }
Coding for blinking LED is so simple.
If you have any questions you can ask me in the comment section below. ^_^
In this tutorial, I have shown that how can you program Nano via Uno. As you can see in the above image, my Arduino Nano's USB female pin is broken. So I have to find a way to upload the sketch to it some way. One day I was Google-ing, I have read somewhere that an Arduino board can also be programmed via another Arduino board.
Attach your Arduino Uno to PC. & go to File > Examples > ArduinoISP > ArduinoISP.
#include <avr/io.h> // header file file for input output pins #include <util/delay.h> // header file for delay. int main (void) { /* set pin 5 of PORTB for output*/ DDRB |= _BV(DDB5); while(1) { /* set pin 5 high to turn led on */ PORTB |= _BV(PORTB5); _delay_ms(1000); //delay 1 second /* set pin 5 low to turn led off */ PORTB &= ~_BV(PORTB5); _delay_ms(1000); //delay 1 second. } }
Understanding of some code.
