Arduino Binary LED Project

My LED work-in-progress has manifested itself as a binary counter, with 100 ms accuracy. Like so…

binary

217

Images only tell part of the story, so I have included a video for your perusal…after the bump


Video of a video, for the win.

So, basically I have put together a counter that will gauge time from 0 to 25.5 seconds…i.e. 100 ms to 25600 ms. Cite the snippet:

//LED Sandbox v2

// Joseph Swanson | 2011
// http://swantron.com

// Setup… LEDs connected to digi 1-8, grounded

// Pin assignment
const int ledPin1 = 1;
const int ledPin2 = 2;
const int ledPin3 = 3;
const int ledPin4 = 4;
const int ledPin5 = 5;
const int ledPin6 = 6;
const int ledPin7 = 7;
const int ledPin8 = 8;

// Create variables to store LED states
int ledState1 = LOW;
int ledState2 = LOW;
int ledState3 = LOW;
int ledState4 = LOW;
int ledState5 = LOW;
int ledState6 = LOW;
int ledState7 = LOW;
int ledState8 = LOW;
// Create timestamp holder

long timeStore1 = 0;
long timeStore2 = 0;
long timeStore3 = 0;
long timeStore4 = 0;
long timeStore5 = 0;
long timeStore6 = 0;
long timeStore7 = 0;
long timeStore8 = 0;
// Configure interval for off/on
long interval1 = 100;
long interval2 = 200;
long interval3 = 400;
long interval4 = 800;
long interval5 = 1600;
long interval6 = 3200;
long interval7 = 6400;
long interval8 = 12800;

void setup() {

//Define pins 1-6 as output
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
pinMode(ledPin4, OUTPUT);
pinMode(ledPin5, OUTPUT);
pinMode(ledPin6, OUTPUT);
pinMode(ledPin7, OUTPUT);
pinMode(ledPin8, OUTPUT);
}
void loop()
{
// Loop area…compare config for time to current
// time…write when config time is reached
if (millis() – timeStore1 > interval1) {
// re-write timestore
timeStore1 = millis();

// if the LED is off turn it on and vice-versa:
if (ledState1 == LOW)
ledState1 = HIGH;
else
ledState1 = LOW;}

if (millis() – timeStore2 > interval2) {
// re-write timestore
timeStore2 = millis();

if (ledState2 == LOW)
ledState2 = HIGH;
else
ledState2 = LOW; }

if (millis() – timeStore3 > interval3) {
// re-write timestore
timeStore3 = millis();

if (ledState3 == LOW)
ledState3 = HIGH;
else
ledState3 = LOW; }

if (millis() – timeStore4 > interval4) {
// re-write timestore
timeStore4 = millis();

if (ledState4 == LOW)
ledState4 = HIGH;
else
ledState4 = LOW; }

if (millis() – timeStore5 > interval5) {
// re-write timestore
timeStore5 = millis();

if (ledState5 == LOW)
ledState5 = HIGH;
else
ledState5 = LOW; }

if (millis() – timeStore6 > interval6) {
// re-write timestore
timeStore6 = millis();

if (ledState6 == LOW)
ledState6 = HIGH;
else
ledState6 = LOW; }

if (millis() – timeStore7 > interval7) {
// re-write timestore
timeStore7 = millis();

if (ledState7 == LOW)
ledState7 = HIGH;
else
ledState7 = LOW; }

if (millis() – timeStore8 > interval8) {
// re-write timestore
timeStore8 = millis();

if (ledState8 == LOW)
ledState8 = HIGH;
else
ledState8 = LOW; }

// digi-write LED state
digitalWrite(ledPin1, ledState1);
digitalWrite(ledPin2, ledState2);
digitalWrite(ledPin3, ledState3);
digitalWrite(ledPin4, ledState4);
digitalWrite(ledPin5, ledState5);
digitalWrite(ledPin6, ledState6);
digitalWrite(ledPin7, ledState7);
digitalWrite(ledPin8, ledState8);
}

Where to next with this effort? I’m thinking that I need to focus on doing this exact thing with fewer pins, and see if I can make that work. I have a few tactile switches around…perhaps some sort of dual-output. Could be cool…stay tuned.

One thought on “Arduino Binary LED Project

  1. Waiting for my Arduino kit in the mail. Nice project!