Arduino uno User Manual

it checks whether the line begins with GET . If yes, it calls handle_command ; oth-
erwise, it checks whether the line is empty, because all HTTP messages are
terminated by an empty line. In this case, receive_from_server sends back an
“OK” response, waits for a millisecond to give the client some time to process
the response, and then disconnects from the client by calling stop .
Admittedly, that was a lot of code, but the effort was well worth it. Using the
InfraredProxy is really simple now:
RemoteControl/InfraredProxy/InfraredProxy.ino
#include <SPI.h>
#include <Ethernet.h>
#include <IRremote.h>
#include "infrared_proxy.h"
const unsigned int PROXY_PORT = 80;
const unsigned int BAUD_RATE = 9600;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 2, 42);
EthernetServer server(PROXY_PORT);
InfraredProxy ir_proxy;
void setup() {
Serial.begin(BAUD_RATE);
Ethernet.begin(mac, ip);
server.begin();
}
void loop() {
ir_proxy.receive_from_server(server);
}
As usual, we define the MAC and IP addresses we’d like to use. Then we define
an EthernetServer object, passing it the port it should listen to, 80 (the standard
HTTP port). Also, we initialize a new InfraredProxy object.
In the setup method, we initialize the serial port for debugging purposes. We
also initialize the Ethernet shield, and we call EthernetServer ’s begin method to
start our server’s listener. In loop , we call only the InfraredProxy ’s
receive_from_server method, passing it our EthernetServer instance.
Let’s finally test the code! Attach the Ethernet shield to your Arduino, and
attach the infrared LED circuit to the shield. Configure the MAC and IP
addresses, compile the InfraredProxy sketch, and upload it to your Arduino.
Point your web browser to http://192.168.2.42/SAMSUNG/32/E0E040BF (adjust the URL
to your local settings!) and see what happens to your TV set or whatever
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Arduino uno Specifications

General

Form factor	Arduino
Certification	RoHS, FC, CE
Processor model	-
Processor frequency	- MHz
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Flash memory	0.032 MB
Maximum internal memory	- GB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Wi-Fi	No
Number of analog I/O pins	6
Number of digital I/O pins	14

Weight and Dimensions

Board dimensions	53.4 x 68.6 mm