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December 19, 2012 16:44
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iPhone controlled / Arduino Powered Christmas rgb LED Strip
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// iPhone controlled / Arduino Powered Christmas rgb LED Strip | |
/* https://github.com/adafruit/LPD8806 */ | |
/* https://github.com/sirleech/Webduino */ | |
/* Web_AjaxRGB_mobile.pde - example sketch for Webduino library */ | |
/* - offers web-based slider controllers for RGB led - */ | |
#include "SPI.h" | |
#include "Ethernet.h" | |
#include "WebServer.h" | |
#include "LPD8806.h" | |
// Number of RGB LEDs in strand: | |
int nLEDs = 160; | |
// Chose 2 pins for output; can be any valid output pins: | |
int dataPin = 2; | |
int clockPin = 3; | |
// First parameter is the number of LEDs in the strand. The LED strips | |
// are 32 LEDs per meter but you can extend or cut the strip. Next two | |
// parameters are SPI data and clock pins: | |
LPD8806 strip = LPD8806(nLEDs, dataPin, clockPin); | |
// You can optionally use hardware SPI for faster writes, just leave out | |
// the data and clock pin parameters. But this does limit use to very | |
// specific pins on the Arduino. For "classic" Arduinos (Uno, Duemilanove, | |
// etc.), data = pin 11, clock = pin 13. For Arduino Mega, data = pin 51, | |
// clock = pin 52. For 32u4 Breakout Board+ and Teensy, data = pin B2, | |
// clock = pin B1. For Leonardo, this can ONLY be done on the ICSP pins. | |
//LPD8806 strip = LPD8806(nLEDs); | |
// LED array: | |
int led[20][4]; | |
// Current LED: | |
int c=0; | |
// CHANGE THIS TO YOUR OWN UNIQUE VALUE | |
static uint8_t mac[6] = { 0x02, 0xAA, 0xBB, 0xCC, 0x00, 0x22 }; | |
// CHANGE THIS TO MATCH YOUR HOST NETWORK | |
static uint8_t ip[4] = { 192, 168, 17, 250 }; // area 51! | |
/* all URLs on this server will start with /rgb because of how we | |
* define the PREFIX value. We also will listen on port 80, the | |
* standard HTTP service port */ | |
#define PREFIX "/rgb" | |
WebServer webserver(PREFIX, 80); | |
int red = 0; //integer for red darkness | |
int blue = 0; //integer for blue darkness | |
int green = 0; //integer for green darkness | |
/* This command is set as the default command for the server. It | |
* handles both GET and POST requests. For a GET, it returns a simple | |
* page with some buttons. For a POST, it saves the value posted to | |
* the red/green/blue variable, affecting the output of the speaker */ | |
void rgbCmd(WebServer &server, WebServer::ConnectionType type, char *, bool) | |
{ | |
if (type == WebServer::POST) | |
{ | |
bool repeat; | |
char name[16], value[16]; | |
do | |
{ | |
/* readPOSTparam returns false when there are no more parameters | |
* to read from the input. We pass in buffers for it to store | |
* the name and value strings along with the length of those | |
* buffers. */ | |
repeat = server.readPOSTparam(name, 16, value, 16); | |
/* this is a standard string comparison function. It returns 0 | |
* when there's an exact match. We're looking for a parameter | |
* named red/green/blue here. */ | |
if (strcmp(name, "red") == 0) | |
{ | |
/* use the STRing TO Unsigned Long function to turn the string | |
* version of the color strength value into our integer red/green/blue | |
* variable */ | |
red = strtoul(value, NULL, 10); | |
} | |
if (strcmp(name, "green") == 0) | |
{ | |
green = strtoul(value, NULL, 10); | |
} | |
if (strcmp(name, "blue") == 0) | |
{ | |
blue = strtoul(value, NULL, 10); | |
} | |
} while (repeat); | |
// after procesing the POST data, tell the web browser to reload | |
// the page using a GET method. | |
server.httpSeeOther(PREFIX); | |
// Serial.print(name); | |
// Serial.println(value); | |
return; | |
} | |
/* for a GET or HEAD, send the standard "it's all OK headers" */ | |
server.httpSuccess(); | |
/* we don't output the body for a HEAD request */ | |
if (type == WebServer::GET) | |
{ | |
/* store the HTML in program memory using the P macro */ | |
P(message) = | |
"<!DOCTYPE html><html><head>" | |
"<meta charset=\"utf-8\"><meta name=\"apple-mobile-web-app-capable\" content=\"yes\" /><meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge,chrome=1\"><meta name=\"viewport\" content=\"width=device-width, user-scalable=no\">" | |
"<title>Keeward LED</title>" | |
"<link rel=\"stylesheet\" href=\"http://code.jquery.com/mobile/1.0/jquery.mobile-1.0.min.css\" />" | |
"<script src=\"http://code.jquery.com/jquery-1.6.4.min.js\"></script>" | |
"<script src=\"http://code.jquery.com/mobile/1.0/jquery.mobile-1.0.min.js\"></script>" | |
"<style> body, .ui-page { background: black; } .ui-body { padding-bottom: 1.5em; } div.ui-slider { width: 88%; } #red, #green, #blue { display: block; margin: 10px; } #red { background: #f00; } #green { background: #0f0; } #blue { background: #00f; } </style>" | |
"<script>" | |
// causes the Arduino to hang quite frequently (more often than Web_AjaxRGB.pde), probably due to the different event triggering the ajax requests | |
"$(document).ready(function(){ $('#red, #green, #blue').slider; $('#red, #green, #blue').bind( 'change', function(event, ui) { jQuery.ajaxSetup({timeout: 110}); /*not to DDoS the Arduino, you might have to change this to some threshold value that fits your setup*/ var id = $(this).attr('id'); var strength = $(this).val(); if (id == 'red') $.post('/rgb', { red: strength } ); if (id == 'green') $.post('/rgb', { green: strength } ); if (id == 'blue') $.post('/rgb', { blue: strength } ); });});" | |
"</script>" | |
"</head>" | |
"<body>" | |
"<div data-role=\"header\" data-position=\"inline\"><h1>KEEWARD led</h1></div>" | |
"<div class=\"ui-body ui-body-a\">" | |
"<input type=\"range\" name=\"slider\" id=\"red\" value=\"0\" min=\"0\" max=\"127\" />" | |
"<input type=\"range\" name=\"slider\" id=\"green\" value=\"0\" min=\"0\" max=\"127\" />" | |
"<input type=\"range\" name=\"slider\" id=\"blue\" value=\"0\" min=\"0\" max=\"127\" />" | |
"</div>" | |
"</body>" | |
"</html>"; | |
server.printP(message); | |
} | |
} | |
void setup() | |
{ | |
// Start up the LED strip | |
strip.begin(); | |
for(int i=0;i<20;i++) { | |
for(int j=0;j<4;j++) { | |
led[i][j]=0; | |
} | |
} | |
// Update the strip, to start they are all 'off' | |
strip.show(); | |
// Serial.begin(9600); | |
// setup the Ehternet library to talk to the Wiznet board | |
Ethernet.begin(mac, ip); | |
/* register our default command (activated with the request of | |
* http://x.x.x.x/rgb */ | |
webserver.setDefaultCommand(&rgbCmd); | |
/* start the server to wait for connections */ | |
webserver.begin(); | |
} | |
void loop() | |
{ | |
// process incoming connections one at a time forever | |
webserver.processConnection(); | |
//Calculates LED values | |
for(int i=0;i<20;i++){ | |
if(i==c){ | |
led[i][0]=random(0, strip.numPixels()); | |
led[i][1]=red; | |
led[i][2]=blue; | |
led[i][3]=green; | |
} else if(((i+1)%10) == c) { | |
led[i][1]=0; | |
led[i][2]=0; | |
led[i][3]=0; | |
} else { | |
led[i][1]/=2; | |
led[i][2]/=2; | |
led[i][3]/=2; | |
} | |
// Set LED value: | |
strip.setPixelColor(led[i][0],strip.Color(led[i][1],led[i][2],led[i][3])); | |
} | |
// Refresh LED states: | |
strip.show(); | |
// Next LED: | |
c=(c+1) % 20; | |
} |
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