Lesson 57: Using Array and Loop with Arduino

Please select other codes for this lecture from the links below.

Part 6: Arduino Practial Programming

In this lesson we learn how what an array is and how to define it. Please watch full details video. list of tipcs listed below.
This code: 4 LED with different turn ON and OFF.

00:00 what is array?
02:52 Reading Array values
04:41 Updating array values
06:44 Defining empty array : integer
08:31 Defining empty array: float
10:58 Working with loops
15:30 Reading values of array
16:51 Demo: Reading values
17:34 filling up an array with float data type
18;48 reading and printing each element of array (code in this page)
19:55 Project: 4 LEDs with array
21:22 Project: wiring
23:26 demo: 4 LEDs
23:46 demo 2: 4 LEDs
24:05 code: 2
24:51 Comparing two codes


  /*
 * Lesson 57: What is Array and "for" loop? | Arduino Step By Step Course
 * this code: reading values of array
 
 * Written by Ahmad Shamshiri for Robojax (Robojax.com)
 * on Dec 30, 2018 at 11:08 in Ajax, Ontario, Canada
 * watch full explanation: https://youtu.be/OgDZIP3VBK8
 
This code is available at http://robojax.com/course1/?vid=lecture67
 
with over 100 lectures Free On  YouTube Watch it here http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339  


or make donation using PayPal http://robojax.com/L/?id=64
 
 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been download from Robojax.com
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

int led1 = 2;// pin defined for LED 1
int led2 = 3;// pin defined for LED 2
int led3 = 4;// pin defined for LED 3
int led4 = 5;// pin defined for LED 4

void setup() {
  pinMode(led1, OUTPUT);// Define a pin for LED 1
  pinMode(led2, OUTPUT);// Define a pin for LED 2
  pinMode(led3, OUTPUT);// Define a pin for LED 3
  pinMode(led4, OUTPUT);// Define a pin for LED 4   

  Serial.begin(9600);// initialize serial monitor

}

void loop() {
  digitalWrite(led1,LOW); // turn LED1 OFF
  digitalWrite(led2,LOW); // turn LED2 OFF
  digitalWrite(led3,LOW); // turn LED3 OFF
  digitalWrite(led4,LOW); // turn LED4 OFF  
  delay(1000);// wait for 1 secdond
    //Robojax.com
  digitalWrite(led1,HIGH); // turn LED1 ON
  delay(1000);// wait for 1 secdond
  
  digitalWrite(led2,HIGH); // turn LED2 ON
  delay(1000);// wait for 1 secdond

  digitalWrite(led3,HIGH); // turn LED3 ON
  delay(1000);// wait for 1 secdond


  digitalWrite(led4,HIGH); // turn LED4 ON
  delay(1000);// wait for 1 secdond
       

}