Arduino Wifi Shield - Laboratory of Intelligent Networks

Report
Ubiquitous Computing Practice
(Wi-Fi)
Youn-Hee Han, Chan-Myung Kim
{yhhan, [email protected]
Laboratory of Intelligent Networks
Advanced Technology Research Center
Korea University of Technology
http://link.koreatech.ac.kr
Introduction
Arduino – Wifi Shield (Recommended)
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Introduction
Sparkfun Wifly Shield
Arduino Wifi Shield (Recommended)
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Arduino WiFi Shield
http://arduino.cc/en/Main/ArduinoWiFiShield
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Wifi Library
Wifi
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begin()
disconnect()
SSID()
RSSI()
…
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Server
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Client
begin()
available()
write()
println()
…
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connected()
connect()
print()
println()
available()
read()
stop()
…
http://arduino.cc/en/Reference/WiFi
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Post Tweet
.
http://arduino-tweet.appspot.com/
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Setup
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
while(true);
}
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, key);
}
delay(5000);
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Encryption
Open (No Encryption)
char ssid[] = "yourNetwork";
int status = WiFi.begin(ssid);
WPA
char ssid[] = "yourNetwork";
char pw[] = “yourPassword";
int status = WiFi.begin(ssid, pw);
WEP
char ssid[] = "yourNetwork";
char key[] = "D0D0DEADF00DABBADEAFBEADED"; // ascii code
int keyIndex = 0;
int status = WiFi.begin(ssid, keyIndex, key);
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Post Tweet
. server_adr[] = "arduino-tweet.appspot.com";
char
char[] token = “2E6p1VBvd7oA3S9xPjmHYB7fB4xbEvIf8”;
String tweet = “트윗 내용”;
if (twtclient.connect(server_adr, 80)) {
Serial.println("connected");
twtclient.println("POST http://arduinotweet.appspot.com/update HTTP/1.0");
twtclient.print("Content-Length: ");
twtclient.println(tweet.length()+strlen(token)+14);
twtclient.println();
twtclient.print("token=");
twtclient.print(token);
twtclient.print("&status=");
twtclient.println(tweet);
}
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Temperature + humidity
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Temperature + humidity
int indata0;
int indata1;
float RH;
float sRH;
float temperatureC;
indata0 = analogRead(0);
sRH = (indata0 / 1024.0) /0.0062 - 0.16 / 0.0062;
temperatureC = analogRead(1) * 0.004882814;
temperatureC = (temperatureC - 0.5) * 100;
RH = sRH / (1.0546 - 0.00216 * temperatureC);
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Indices
Discomfort Index

1.8 * temperatureC - 0.55 * (1 - RH/100.0) * (1.8 *
temperatureC - 26) + 32
Food Poisoning Index

(1-exp(-exp(4.4946+0.0701*temperatureC+0.0152*RH)))*185.66+26.14
Deterioration Index

((RH-65)/14)*pow(1.054, temperatureC)
http://www.kma.go.kr/weather/lifenindustry/life_01.jsp?JISU_INFO=life3_03
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Post Tweet
.
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Thank You
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