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Lesson 57: Using Array and Loop with Arduino

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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.

  • 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 (code in this page)
  • 17:34 filling up an array with float data type
  • 18;48 reading and printing each element of array
  • 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 (
 * on Dec 30, 2018 at 11:08 in Ajax, Ontario, Canada
 * watch full explanation:
This code is available at
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 * 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
    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
    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 <>.

void setup() {
  Serial.begin(9600);// initialize serial monitor
  for (int i=0; i<4; i++)
    Serial.println(i);// print value of i
 int age[]={30, 27, 22, 31};
  for (int i=0; i<4; i++)
    Serial.println(age[i]);// prints values from age array

void loop() {



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