Introduction: Arduino Led Server
A simple webpage to control your 8 leds.
What you need:
Arduino.
Ethernet shield.
8 x leds.
8 x 1k resistors.
1 x jumper cable.
Attachments
2 People Made This Project!
MohammedT59 made it!- JohnC20 made it!
Recommendations
Battery Powered Contest
Plywood Challenge
Plastic Contest
8 Discussions
5 years ago on Introduction
You only show 7 leds instead of eight. I only could get lines 2-7 to work.
5 years ago on Introduction
Have not tested the electronics part of it yet, but did a little window dressing to make it easier for me to read.
6 years ago on Introduction
I've made this and noticed something... The pins and their respectful outputs don't match up, so after a few "TWEAKS" I've fixed it to work for me.
Here is the changed code below:
#include <Ethernet.h>
#include <SPI.h>
//network NB: Pins 10, 11, 12 and 13 are reserved for Ethernet module.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 2, 200 };
byte gateway[] = { 192, 168, 1, 1 };
byte subnet[] = { 255, 255, 255, 0 };
String inString = String(35);
String Led;
int led[] = {00, 1, 2, 3, 4, 5, 6, 7, }; //Led pins num 0 in arry is not used
int numofleds = 8; //numofleds
String value[] = {"on","on","on","on","on","on","on","on","on"}; //startup all led are off
EthernetServer server(80);
String data;
void setup()
{
Serial.begin(9600);
Ethernet.begin(mac, ip,gateway,subnet);
server.begin();
//set pin mode
for (int j = 0; j < (numofleds + 1); j++){
pinMode(led[j], OUTPUT);
}
Serial.println("Serial READY");
Serial.println("Ethernet READY");
Serial.println("Server READY");
}
void loop()
{
EthernetClient client = server.available();
if(client){
// an http request ends with a blank line
boolean current_line_is_blank = true;
while (client.connected()) {
if(client.available()) {
char c = client.read();
// if we've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so we can send a reply
if (inString.length() < 35) {
inString.concat(c);
}
if (c == '\n' && current_line_is_blank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
client.println("<html><body><form method=get>");
client.println("<p>Led controller</p>");
for(int i=1;i < (numofleds + 1) ;i++){
Led = String("led") + i;
if(inString.indexOf(Led+"=on")>0 || inString.indexOf("all=on")>0){
Serial.println(Led+"on");
digitalWrite(led[i], HIGH);
value[i] = "off";
}else if(inString.indexOf(Led+"=off")>0 || inString.indexOf("all=off")>0 ){
Serial.println(Led+"on");
digitalWrite(led[i], LOW);
value[i] = "on";
}
client.println("<br>"+Led+" <input type=submit name="+Led+" value="+value[i]+">");
}
client.println("<br>All <input type=submit name=all value=on><input type=submit name=all value=off>");
client.println("</form>r<html></body>");
break;
}
if (c == '\n') {
// we're starting a new line
current_line_is_blank = true;
} else if (c != '\r') {
// we've gotten a character on the current line
current_line_is_blank = false;
}
}
}
// give the web browser time to receive the data
delay(10);
inString = "";
client.stop();
}
}
Reply 6 years ago on Introduction
For some reason its got a " r" at the end of the page any ideas?
Reply 6 years ago on Introduction
The line of code that cantains the invalid "r" is as follows
client.println("</form>r<html></body>");
Just find and remove the "r" in your copy of the code and it shouldn't be displayed anymore.
A simple typo was all it was.
6 years ago on Introduction
Good job, i want to use relay for lamps, the code working? Or must to do something else with the code? Thanks in advance!
6 years ago on Introduction
Would there be a way to eliminate the Ethernet cable and do this over wifi?
8 years ago on Introduction
Nicely done.