Lesson 62: Time control without delay, LED blink with millis()

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

• Lesson 62-1: Basic time measurment with millis()
• Lesson 62-2: Allowing push button switch to be pushed after specific time
• Lesson 62-3: LED blink with different ON and OFF time using millis()

Part 6: Arduino Practial Programming

This code is for to use millis function to achieve different ON and OFF time in creating LED blink.

This is example 3. Please watch the video for full details.

Millis reference page

• 00:00 Introduction
• 04:41 millis() example one
• 07:14 millis() example two
• 11:12 millis(0 example three
• 16:11 LED blink using millis
• 17:08 Wiring for LED explained
• 18:06 Code explained
• 22:36 LED blink demonstration

 /*
 * Lesson 62: Time control without delay, LED blink with millis() | Arduino Step By Step Course
 /*
 * LED Blink with millis() with different time interval of ON and OFF time
 * Written by Ahmad Shamshiri for Robojax.com and Robojax YouTube channel
 * written on Aug 05, 2019 in Ajax, Ontario, Canada at 12:41
 * Watch video instruction:https://youtu.be/obBX9hyH5mM
 
 This video is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8

 
Get this code and other Arduino codes from Robojax.com

If you found this tutorial helpful, please support me so I can continue creating 
content like this. You can support me on Patreon http://robojax.com/L/?id=63

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/>.
 */
const int LEDpin = 3;
const long onDuration = 100;// OFF time for LED
const long offDuration = 500;// ON time for LED
int LEDState =HIGH;// initial state of LED

long rememberTime=0;// this is used by the code

void setup() {
  pinMode(LEDpin,OUTPUT);// define LEDpin as output
  digitalWrite(LEDpin,LEDState);// set initial state
}

void loop() {
  // Robojax LED blink with millis()

 if( LEDState ==HIGH )
 {
    if( (millis()- rememberTime) >= onDuration){   
    LEDState = LOW;// change the state of LED
    rememberTime=millis();// remember Current millis() time
    }
 }
 else
 {   
    if( (millis()- rememberTime) >= offDuration){     
    LEDState =HIGH;// change the state of LED
    rememberTime=millis();// remember Current millis() time
    }
 }

 // Robojax LED blink with millis()
 digitalWrite(LEDpin,LEDState);// turn the LED ON or OFF

}// loop ends

   

The least I expect from you is to thumb up the video and subscribe to my channel. I appriciate that. .I have spent months making these lectures and writing code. You don't lose anything by subscribging to my channel. Your subscription is stamp of approval to my videos and more people can find them and in it turn it helps me. Thank you

If you found this tutorial helpful, please support me so I can continue creating content like this. support me via PayPal

**** AFFILIATE PROGRAM **** We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Right Side