描述

傳感器描述-

硬件連接的-

在這個項目中，PIR 傳感器以這樣一種方式連接到 NodeMCU 板：

• vcc 引腳到 NodeMCU 的 3.3v
• gnd 引腳到 NodeMCU 的 gnd
• 輸出引腳到 NodeMCU D8 的數(shù)字引腳，或者您可以連接任何數(shù)字引腳……由您決定。

Arduino uno代碼-

int pirpin = 8;
int ledpin = 12;
void setup() {
 // put your setup code here, to run once:
pinMode(pirpin,INPUT);
pinMode(ledpin,OUTPUT);
}
void loop() {
 // put your main code here, to run repeatedly:
if(digitalRead(pirpin) == HIGH)
  digitalWrite(ledpin,HIGH);
else
  digitalWrite(ledpin,LOW);
}

thingsio.ai流程-

1) 谷歌thingsio.ai

2）自己注冊（或）注冊一個賬戶

3) 單擊頂部菜單上的新建項目按鈕

4) 轉到示例代碼選項 --> nodemcu -->LM35 --> 復制

5）將其粘貼到arduino ide

6）聲明要發(fā)送到服務器的變量

    int t; //comment the line "int t,t1,t2,t3;"

7) 提供您的 SSID 和密碼

  if(!wifiManager.autoConnect("abcd","*****"))    
               //wifiManager.autoConnect("AP-NAME", "AP-PASSWORD"); (OR) wifiManager.autoConnect("AP-NAME"); only ID no password (OR) wifiManager.autoConnect(); this will
 generate a ID by itself 
 {    Serial.println("failed to connect and hit timeout");     //control comes here after long time of creating Access point "NodeMCU" by NodeMCU and still it has not connected //reset and try again, or maybe put it to deep sleep    ESP.reset();    delay(1000);  } 
//here in place of abcd give your ssid and in place of ******* give your password

8）計算部分

t=digitalRead(D8);//t1=(analogValue/1024.0) * 5000;       // Serial.print("temp: ");  comment line's     Serial.println(t);       //t2=(t1/10);        //Serial.print("celc: ");     //   Serial.println(t2);       // t3=((t2 * 9)/5 + 32);        //Serial.print("fhrn: ");        //Serial.println(t3); 

9) 將 celc 更改為您的參數(shù)名稱(ALERT)，將 t2 更改為 t，刪除其他

String PostValue = "{"device_id":  61121695818, "slave_id": 2";         PostValue = PostValue + ","dts":" +timestamp;   PostValue = PostValue +","data":{"celc":" + t2 +","fahr":" + t3 +"}"+"}";//+","fahr":" + t3 <----- delete this part from above line

10) 這就是我們現(xiàn)在需要做的將它上傳到 nodemcu 板。

打開你的串口監(jiān)視器，看看http狀態(tài)是否為200，如果是，這意味著數(shù)據(jù)已成功上傳到云端，然后在云端檢查并分析它。

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