วันนี้จะมาสอนใช้งาน
Arduino Shield Ethernet W5100 แสดงค่าอุณหภูมิและความชื้น ภายในบ้าน
โดยผมใช้ sensor dht11 เป็นตัวอ่านค่าอุณหภูมิและความชื้น
มาดูวงจรแบบง่ายกันเลยครับ สำหรับการต่อ
dht11
จากนั้นนำโค้ดนี้ upload ลง arduio เพื่อหา IP Address ก่อน
#include "SPI.h"
#include "Ethernet.h"
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte server[] = { 173,194,126,119 }; // www.google.co.th
EthernetClient client;
void setup()
{
Serial.begin(9600);
if(Ethernet.begin(mac) == 0) { // start ethernet using mac & DHCP
Serial.println("Failed to configure Ethernet using DHCP");
while(true) // no point in carrying on, so stay in endless loop:
;
}
delay(1000); // give the Ethernet shield a second to initialize
Serial.print("This IP address: ");
IPAddress myIPAddress = Ethernet.localIP();
Serial.print(myIPAddress);
if(client.connect(server, 80)>0) {
Serial.println(" connected");
client.println("GET /search?q=arduino HTTP/1.0");
client.println();
} else {
Serial.println("connection failed");
}
}
void loop()
{
if (client.available()) {
char c = client.read();
// uncomment the next line to show all the received characters
// Serial.print(c);
}
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
for(;;)
;
}
}
เมื่อได้ IP ดังรูป
จากนั้นแก้ IP Address ใน Code ด้านล่างให้ตรงกับที่เรา FIND IP มา
*/
#include
#include
#include "DHT.h"
#define DHTPIN 2 // what pin we're connected to
#define DHTTYPE DHT11 // DHT 11
DHT dht(DHTPIN, DHTTYPE);
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,100,146);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
//IPAddress myIPAddress = Ethernet.localIP();
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
dht.begin();
}
void loop() {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("");
client.println("");
client.print("WWW.ELEC2YOU.COM");
client.println("
");
client.print("Humidity: ");
client.print(dht.readHumidity());
client.print(" Temperature: ");
client.print(dht.readTemperature());
client.println("
");
client.println("");
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}
upload ลง บอร์ด arduion uno r3
RSS Feed
Twitter
21:37
Unknown
