arduino+php+sinacloud+微信监控led及室温

前言：生命不息，折腾不止。这是一种对生命的认知及态度。吾本是学软件的，但由于大学期间接触到的社团有搞硬件的，看到他们搞的遥控小车，小四轴。。。觉得他们好geek，于是也对硬件愈发的感兴趣。业余时间研究一下硬件，积累了一点硬件知识。一直期盼着做一个小项目来实战一下。某日在arduino论坛发现了一位大神的作品是用微信控制arduino的，于是在他的作品上演译了一番。

硬件：

arduino uno(￥25/一块，原谅我穷B只能用山寨的了)，

enc28j60(￥13/一块，以太网模块)，DHT11（温湿度传感器，便宜），MQ-2（烟雾传感器，也不贵）

led（在废弃家电上扒下来的），

杜邦线（若干根，焊工好的话，可以从废弃家电上扒下来再用来焊接）。

帐号准备：微信公众号或测试号，新浪云帐号（新浪云免费的空间足够使用，由于最近学了springmvc,想用java写，但java环境初期都要收费，无奈只好用原文的php）。

硬件接线：arduino uno 与 enc28j60

Enc28j60	Arduino UNO
VCC	3.3V
GND	GND
SCK	Pin 13
SO	Pin 12
SI	Pin 11
CS	Pin 10

arduino uno与DHT11接线说明

arduino uno与MQ-2接线说明

实物：

一切线路okay！下面准备烧录程序：(使用arduino ide将下面代码烧录进uno板，两个库文件需要放进ide的libraries下：文件)

//   
//   FILE:  dht_test.pde  
// PURPOSE: DHT library test sketch for Arduino  
//  


#include 
 #include     
#define DHT11_PIN 6//put the sensor in the digital pin 6
 
EthernetClient client;
signed long next;
char server[] = "1.smarthousetest.applinzi.com";
char state = '0';
char c;
unsigned long lastConnectionTime = 0;          
boolean lastConnected = false;                 
const unsigned long postingInterval = 200*1000; 
double temperature=0;
double humidity=0;
double smoke=0;
int ledPin=2; //设定控制LED的数字IO脚
dht DHT;  
  
  
void setup()  
{  
  Serial.begin(9600);  
  Serial.println("DHT TEST PROGRAM ");  
  Serial.print("LIBRARY VERSION: ");  
  Serial.println(DHT_LIB_VERSION);  
  Serial.println();  
  Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)");  

 // 设置串口通信波特率
  uint8_t mac[6] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xE1};
  IPAddress myIP(192,168,0,110);
  Serial.println("*****");
  Ethernet.begin(mac,myIP);
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());

  pinMode(5,OUTPUT);
  
}  
  
void loop()  
{  
  
  // READ DATA  
  Serial.print("DHT11, \t");  
 int chk = DHT.read11(DHT11_PIN);  
  switch (chk)  
  {  
    case 0:  Serial.print("OK,\t"); break;  
    case -1: Serial.print("Checksum error,\t"); break;  
    case -2: Serial.print("Time out error,\t"); break;  
    default: Serial.print("Unknown error,\t"); break;  
  }  
 // DISPLAT DATA  
  Serial.print(DHT.humidity,1);  
  Serial.print(",\t");  
  Serial.println(DHT.temperature,1);  

temperature=DHT.temperature;
humidity=DHT.humidity;
temperature=DHT.temperature;


 if(state == '0'){
    digitalWrite(5, LOW);      
  }else if(state == '1'){
    digitalWrite(5, HIGH);
  }

    smoke=analogRead(0);
    Serial.println(smoke,DEC);

if(smoke>=300){//烟雾浓度值大于300时，自动亮
   digitalWrite(ledPin,HIGH); //设定PIN5脚为LOW = 0V
}else{
   digitalWrite(ledPin,LOW); //设定PIN5脚为LOW = 0V
}
    

  while(client.available()) {
    c = client.read();
    if (c == '{'){
      state = client.read();
    }
    Serial.println(state);
   
  }


 
  if (!client.connected() && lastConnected) {
    Serial.println("disconnecting**.");
    client.stop();
  }
 
  if(!client.connected()) {
 Serial.println("!client.connected()");
    
    if (client.connect(server, 80)) {
  Serial.println(client.connect(server, 80));
      // send the HTTP PUT request:
      client.print("GET /update.php?token=smarthouse&temperature=");
      client.print(temperature);
      client.print("&humidity=");
      client.print(humidity);
      client.print("&smoke=");
      client.print(smoke);
      client.println(" HTTP/1.1");
      client.println("Host: 1.smarthousetest.applinzi.com");//项目url
      client.println("Connection: close");
      client.println();
 
      lastConnectionTime = millis();
    }else {
      Serial.println("connection failed");
      Serial.println("disconnecting.////");
      client.stop();
    }
  }
  lastConnected = client.connected();
  
  
  delay(1000);  
}  
//  
// END OF FILE  
//

烧录完成，则将服务器端的项目部署上去。部署步骤省略

index.php:

FromUserName;
$toUserName = $xmlObj->ToUserName;
$msgType = $xmlObj->MsgType;
 
 
if($msgType == 'text'){
        $content = $xmlObj->Content;
}else{
        $retMsg = '只支持文本和语音消息';
}
 
if (strstr($content, "温度")) {
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
        mysql_select_db("app_smarthousetest", $con);
 
        $result = mysql_query("SELECT * FROM sensor_data");
        while($arr = mysql_fetch_array($result)){
          if ($arr['ID'] == 0) {
                  $tempr = $arr['temperature'];
          }
        }
        mysql_close($con);
 
    $retMsg = "亲爱的主人，你的房间的温度为".$tempr."℃。";
}else if(strstr($content, "湿度")) {
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
        mysql_select_db("app_smarthousetest", $con);
 
        $result = mysql_query("SELECT * FROM sensor_data");
        while($arr = mysql_fetch_array($result)){
          if ($arr['ID'] == 0) {
                  $tempr = $arr['humidity'];
          }
        }
        mysql_close($con);
 
    $retMsg = "亲爱的主人，你的房间的湿度为".$tempr."%";
}else if(strstr($content, "烟雾浓度")) {
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
        mysql_select_db("app_smarthousetest", $con);
 
        $result = mysql_query("SELECT * FROM sensor_data");
        while($arr = mysql_fetch_array($result)){
          if ($arr['ID'] == 0) {
                  $tempr = $arr['smoke'];
          }
        }
        mysql_close($con);
 
    $retMsg = "亲爱的主人，你的房间的烟雾浓度值为".$tempr;
}else if (strstr($content, "开灯")) {
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
 
 
        $dati = date("h:i:sa");
        mysql_select_db("app_smarthousetest", $con);
 
        $sql ="UPDATE led_data SET create_time='$dati',status = '1'  WHERE ID = '0'";//修改开关状态值
 
        if(!mysql_query($sql,$con)){
            die('Error: ' . mysql_error);
        }else{
                mysql_close($con);
                $retMsg = "好的";
        }
}else if (strstr($content, "关灯")) {
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
 
 
        $dati = date("h:i:sa");
        mysql_select_db("app_smarthousetest", $con);
 
        $sql ="UPDATE led_data SET create_time='$dati',status = '0'
        WHERE ID = '0'";//修改开关状态值
 
        if(!mysql_query($sql,$con)){
            die('Error: ' . mysql_error());
        }else{
                mysql_close($con);
                $retMsg = "好的";
        }        
}else{
        $retMsg = "暂时不支持该命令";
}
 
//XML信息
$retTmp = "<xml>
                <ToUserName><![CDATA[%s]]></ToUserName>
                <FromUserName><![CDATA[%s]]></FromUserName>
                <CreateTime>%s</CreateTime>
                <MsgType><![CDATA[text]]></MsgType>
                <Content><![CDATA[%s]]></Content>
                <FuncFlag>0</FuncFlag>
                </xml>";
$resultStr = sprintf($retTmp, $fromUserName, $toUserName, time(), $retMsg);
 
//反馈到微信服务器
echo $resultStr;
?>

update.php

<?php 
if (($_GET['temperature'] || $_GET['humidity'] || $_GET['smoke'] )&& ($_GET['token'] == "smarthouse")) {//可以改token,这相当于密码，在Arduino端改成相应的值即可
        $con = mysql_connect(SAE_MYSQL_HOST_M.':'.SAE_MYSQL_PORT,SAE_MYSQL_USER,SAE_MYSQL_PASS); 
        $temperature = $_GET['temperature'];
        $humidity = $_GET['humidity'];
        $smoke = $_GET['smoke'];
        mysql_select_db("app_smarthousetest", $con);//要改成相应的数据库名
 
        $result = mysql_query("SELECT * FROM led_data");
        while($arr = mysql_fetch_array($result)){//找到需要的数据的记录，并读出状态值
                if ($arr['ID'] == 0) {
                        $status = $arr['status'];
                }
        }
        $dati = date("h:i:sa");//获取时间
        $sql ="UPDATE sensor_data SET create_time='$dati',temperature = '$temperature',humidity = '$humidity',smoke = '$smoke'
        WHERE ID = '0'";//更新相应的传感器的值
        if(!mysql_query($sql,$con)){
            die('Error: ' . mysql_error());//如果出错，显示错误
        }
        mysql_close($con);
        echo "{".$status."}";//返回状态值，加“{”是为了帮助Arduino确定数据的位置
}else{
        echo "Permission Denied";//请求中没有type或data或token或token错误时，显示Permission Denied
}
?>

数据库：

sensor_data