The iHacklab Binary Counter

How to build a Binary Counter on an Arduino:

by J.B. Wylzan

Project 7:  Binary Counter:

This project teaches you how to count in Binary. 

Four LEDs - yellow, green, red, blue - are used as a binary counter. 

The binary and decimal clock below will be your final project as we progress.

In the table below, the four circles in each row represent the four Leds. A black circle means the led is On. The white circle means the led is Off. Study the lights in the prototype and compare them with the table. In few minutes, you will be able to count in binary. 

Hardware:
4 LEDs
4 resistors, 200 ohms
connecting wires
breadboard
computer cable
Arduino UNO

Schematic Diagram:

image created by fritzing

Block Diagram:

image created by fritzing

Code # 7:  

/*
  iHackLab Binary Counter
  powered by Arduino
  sketched by J.B. Wylzan
  modified by Lawsinium

  Four Leds will count in Binary .
  This example code is public domain.
 */

// Setup pins 4 to 12
void setup() 
{
  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);
  pinMode(13, OUTPUT);
}

// Count Binary from 1 to 9
void loop() 
{
  digitalWrite(4, HIGH);           // count 0ne 
  delay(1000);
  digitalWrite(4, LOW);
  delay(1000);
  
   digitalWrite(5, HIGH);          // count Two
   delay(1000);
  digitalWrite(5, LOW);
 delay(1000); 

 digitalWrite(4, HIGH);           // count Three
 digitalWrite(5, HIGH);
   delay(1000);
   digitalWrite(4, LOW);
   digitalWrite(5, LOW);
 delay(1000); 

 digitalWrite(6, HIGH);           // count Four 
  delay(1000);
  digitalWrite(6, LOW);
  delay(1000);
  
  digitalWrite(4, HIGH);           // count Five
 digitalWrite(6, HIGH);
   delay(1000);
   digitalWrite(4, LOW);
   digitalWrite(6, LOW);
 delay(1000); 

 digitalWrite(5, HIGH);           // count six
 digitalWrite(6, HIGH);
   delay(1000);
   digitalWrite(5, LOW);
   digitalWrite(6, LOW);
 delay(1000); 

 digitalWrite(4, HIGH);           // count seven
 digitalWrite(5, HIGH);
 digitalWrite(6, HIGH);
   delay(1000);
   digitalWrite(4, LOW);
   digitalWrite(5, LOW);
   digitalWrite(6, LOW);
 delay(1000); 

  digitalWrite(7, HIGH);           // count eight 
  delay(1000);
  digitalWrite(7, LOW);
  delay(1000);
  
  digitalWrite(4, HIGH);           // count nine
 digitalWrite(7, HIGH);
   delay(1000);
   digitalWrite(4, LOW);
   digitalWrite(7, LOW);
 delay(1000);  
}

Actual Layout :  

Procedure:
1. Use the same prototype as shown above
2. Run the Arduino Interface
3. Select File > New
4. Copy Code #7 above
5. Paste Code #7
6. Click File > Save
7. Click Verify
8. Click Upload
9. The four leds connected to pins 8 to 11 will count in binary (see binary table above)

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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