做法很简单，就是用 Arduino 通过物联网 Yeelink 来控制 LED 灯的开关。
基本参考官方教程做的 http://blog.yeelink.net/?p=94
http://blog.yeelink.net/?p=94 。我为了方便调整数字端口，只加了一行代码而已。注意，不要使用10，11，12，13数字端口，会有数据从这几个端口流入流出，导致控制失效。
开关可以在网页端控制，也可以在手机app控制。手机app下载地址：http://www.yeelink.net/product/mobile 也许下载链接失效了，我下载不了，不过我在其他应用商店下载到了，直接搜索 yeelink 应该就能找到。
我的成品图：
这是终端链接：http://www.yeelink.net/devices/3414/
点开全文获取全部代码：
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/* Yeelink sensor client power switch example */ #include #include #include #include byte buff[2]; // for yeelink api #define APIKEY "e825dbce4840这里换成你的API1e5a27e" // replace your yeelink api key here #define DEVICEID 3这里换成你的设备号4 // replace your device ID #define SENSORID 5这里换成你的端口号4 // replace your sensor ID // assign a MAC address for the ethernet controller. byte mac[] = { 0x00, 0x1D, 0x72, 0x82, 0x35, 0x9D}; // initialize the library instance: EthernetClient client; char server[] = "api.yeelink.net"; // name address for yeelink API unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds boolean lastConnected = false; // state of the connection last time through the main loop const unsigned long postingInterval = 3*1000; // delay between 2 datapoints, 30s String returnValue = ""; boolean ResponseBegin = false; int PINNUM = 7; void setup() { pinMode(PINNUM, OUTPUT); Wire.begin(); // start serial port: Serial.begin(57600); // start the Ethernet connection with DHCP: if (Ethernet.begin(mac) == 0) { Serial.println("Failed to configure Ethernet using DHCP"); for(;;) ; } else { Serial.println("Ethernet configuration OK"); } } void loop() { // if there's incoming data from the net connection. // send it out the serial port. This is for debugging // purposes only: if (client.available()) { char c = client.read(); // Serial.print(c); if (c == '{') ResponseBegin = true; else if (c == '}') ResponseBegin = false; if (ResponseBegin) returnValue += c; } if (returnValue.length() !=0 && (ResponseBegin == false)) { Serial.println(returnValue); if (returnValue.charAt(returnValue.length() - 1) == '1') { Serial.println("turn on the LED"); digitalWrite(PINNUM, HIGH); } else if(returnValue.charAt(returnValue.length() - 1) == '0') { Serial.println("turn off the LED"); digitalWrite(PINNUM, LOW); } returnValue = ""; } // if there's no net connection, but there was one last time // through the loop, then stop the client: if (!client.connected() && lastConnected) { Serial.println(); Serial.println("disconnecting."); client.stop(); } // if you're not connected, and ten seconds have passed since // your last connection, then connect again and send data: if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) { // read sensor data, replace with your code //int sensorReading = readLightSensor(); Serial.print("yeelink:"); //get data from server getData(); } // store the state of the connection for next time through // the loop: lastConnected = client.connected(); } // this method makes a HTTP connection to the server and get data back void getData(void) { // if there's a successful connection: if (client.connect(server, 80)) { Serial.println("connecting..."); // send the HTTP GET request: client.print("GET /v1.0/device/"); client.print(DEVICEID); client.print("/sensor/"); client.print(SENSORID); client.print("/datapoints"); client.println(" HTTP/1.1"); client.println("Host: api.yeelink.net"); client.print("Accept: *"); client.print("/"); client.println("*"); client.print("U-ApiKey: "); client.println(APIKEY); client.println("Content-Length: 0"); client.println("Connection: close"); client.println(); Serial.println("print get done."); } else { // if you couldn't make a connection: Serial.println("connection failed"); Serial.println(); Serial.println("disconnecting."); client.stop(); } // note the time that the connection was made or attempted: lastConnectionTime = millis(); } |
