Switching Button

How to build and control a series of LEDs on an Arduino with a switch button:

by J.B. Wylzan

Project 11: The Switch

This project teaches how to turn on and off any of your first 10 projects with a switch button.

Hardware:
LEDs
resistors
switch button
wires
breadboard
computer cable
Arduino UNO

Block Diagram:

image designed by Fritzing

Actual Assembly:  

Procedure:
1. Use the same prototype as shown above
2. Run the Arduino Interface
3. Select File > New
4. Copy Code #11  below
5. Paste Code #11
6. Click File > Save
7. Click Verify
8. Click Upload
9. Activate Project Breaker by pressing a switch

Code # 11:  

/* 
    iHackLab The Switch 
    powered by Arduino
    sketched by J.B. Wylzan
    modified by Lawsinium

  Executes Project Breaker when a switch is pressed 
  Turns On Led (#8) when switch is released.
  Initializes values on certain variables.
  This example code is public domain. */
    
//declare variables/constants

int y = 1000;           // y is a variable with a certain value = 1000
int z;                        // z is a variable with uncertain value

void setup() {
  pinMode(3, INPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
}

void loop() {
 z = digitalRead(3);                               // input action: Press or Release ?
 if (z == 0)                                               // if button is in release mode; z == 0 
 {
 digitalWrite(8, HIGH);                          // led#8 turns ON
 }
else                                                         // if button is pressed; z == 1
 {
  digitalWrite(8, LOW);                         // then led#8 turns OFF
      // **project Breaker starts**
  digitalWrite(7, HIGH);                        // turn the LED on
  digitalWrite(9, HIGH);                         // turn the LED on
   delay(y); 
  digitalWrite(7, LOW);                       // turn the LED off 
  digitalWrite(9, LOW);                      // turn the LED off
  
  digitalWrite(6, HIGH);                     // turn the LED on
  digitalWrite(10, HIGH);                   // turn the LED on
  delay(y);
  digitalWrite(6, LOW);                     // turn the LED off
  digitalWrite(10, LOW);                   // turn the LED off
  
  digitalWrite(5, HIGH);                    // turn the LED on
  digitalWrite(11, HIGH);                  // turn the LED on 
   delay(y);
  digitalWrite(5, LOW);                    // turn the LED off
 digitalWrite(11, LOW);                   // turn the LED off  

  digitalWrite(4, HIGH);                    // turn the LED on 
  digitalWrite(12, HIGH);                  // turn the LED on
  delay(y);
  digitalWrite(4, LOW);                      // turn the LED off 
  digitalWrite(12, LOW);                    // turn the LED off 
      // **procedure Breaker ends** 
  }
}

/*    End of Program       */



Serial Monitor Test:
//replace the button with any sensor e.g. motion sensor

byte sensorPin = 3;
byte ledPin= 13;
void setup()
{
pinMode(sensorPin,INPUT);
pinMode(ledPin,OUTPUT);
Serial.begin(9600);
}
void loop()
{
byte state = digitalRead(sensorPin);
digitalWrite(ledPin,state);
if(state == 1)Serial.println("Warning! Intruder!!!!");
else if(state == 0)Serial.println("No one!");
delay(500);

}

Project # 12: The Game of Reflex

Disclaimer:  We shall not be liable for any loss or damage of whatever nature - direct, indirect, consequential, or otherwise - which may arise as a result of your use of any information on this website. However, if you are interested in using any of the projects for personal or educational purposes, please inform the author by email. 

Public Domain Notice: Copyright (c) 2000. All rights reserved. This article is part of a book entitled iHackRobot. Copies are welcome to be shared or distributed publicly as long proper citations are observed. Please cite as follows: Biotronics: The Silver Species, Joey Lawsin, 1988, USA.

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Patent Pending. 2000 © ®

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