描述

介紹

農業和糧食生產是社會的一個主要方面，日常生活直接受到它的影響。我們正在尋求創建一個小型模型監測和抽水系統，以幫助維持家庭種植的植物的水位。未來的補充可以是大氣水和溫度監測。該項目旨在通過仔細平衡植物內的水位以確保不會因澆水過多或澆水不足而造成作物損失，至少是在小范圍內解決作物損失問題。

流程/步驟

第 1 步：創建電路

按照鏈接的 Fritzing 圖或面包板圖像將電路放在一起。

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1 / 2 ?設備面包板接線示意圖

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第 2 步：云交互

在 IoT Cloud 上創建東西以設置用于云連接的儀表板

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1 / 2 ?變量列表

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首先在 Arduino IoT Cloud 上創建“事物”。然后創建你的三個變量；給出了信息。查看儀表板圖像以查看變量是“只讀”還是“讀/寫”。最后創建儀表板并將變量鏈接到適當的小部件。

第 3 步：代碼 [.ino]

將以下代碼復制到 Arduino IDE 中...

/* 
 Sketch generated by the Arduino IoT Cloud Thing "AutoGarden"
 https://create.arduino.cc/cloud/things/36881e31-0b15-4ae9-ad3d-c0bee1f0ea06 
 Arduino IoT Cloud Variables description
 The following variables are automatically generated and updated when changes are made to the Thing
 int moisture;
 bool RunPump;
 Variables which are marked as READ/WRITE in the Cloud Thing will also have functions
 which are called when their values are changed from the Dashboard.
 These functions are generated with the Thing and added at the end of this sketch.
*/
#include "thingProperties.h"
#define PumpRunner 0 // set the pin for the pump
int val = 0; // returned value from soil moisture sensor
int soilPin = A0; // pin for reading from the soil moisture sensor
int soilPower = 7; // pin for powering the the soil moisture sensor.
int setMLevel;
void setup() {
 // Initialize serial and wait for port to open:
 Serial.begin(9600);
 // This delay gives the chance to wait for a Serial Monitor without blocking if none is found
 delay(1500); 
 // Defined in thingProperties.h
 initProperties();
 // Connect to Arduino IoT Cloud
 ArduinoCloud.begin(ArduinoIoTPreferredConnection);
 /*
    The following function allows you to obtain more information
    related to the state of network and IoT Cloud connection and errors
    the higher number the more granular information you’ll get.
    The default is 0 (only errors).
    Maximum is 4
*/
 setDebugMessageLevel(2);
 ArduinoCloud.printDebugInfo();
 pinMode(PumpRunner, OUTPUT);
 pinMode(soilPower, OUTPUT);
 digitalWrite(soilPower, LOW);
}
void loop() {
 ArduinoCloud.update();
 // Your code here 
 moisture = readSoil();
 moisture = map(moisture, 0, 700, 0, 100);
 Serial.println(moisture);
 digitalWrite(PumpRunner, LOW);
 delay(1000);
 if(moisture <= setMLevel && moisture >= 10){
   RunPump = true;
 }
 if(RunPump){
   digitalWrite(PumpRunner, HIGH);
   delay(1000); // pump takes a second or two to start up
   digitalWrite(PumpRunner, LOW);
   delay(1000); // one second delay so water can settle
   RunPump = false;
 }
 delay(1000);// remaining delay, go to value minus 3010
}
int readSoil(){
 digitalWrite(soilPower, HIGH);
 delay(10);
 val = analogRead(soilPin);
 digitalWrite(soilPower, LOW);
 return val;
}

第 4 步：屬性代碼

// Code generated by Arduino IoT Cloud, DO NOT EDIT.
#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>
const char THING_ID[] = "36881e31-0b15-4ae9-ad3d-c0bee1f0ea06";
const char SSID[]     = SECRET_SSID;    // Network SSID (name)
const char PASS[]     = SECRET_PASS;    // Network password (use for WPA, or use as key for WEP)
void onSetMLevelChange();
void onRunPumpChange();
int moisture;
int setMLevel;
bool RunPump;
void initProperties(){
 ArduinoCloud.setThingId(THING_ID);
 ArduinoCloud.addProperty(moisture, READ, ON_CHANGE, NULL);
 ArduinoCloud.addProperty(setMLevel, READWRITE, ON_CHANGE, onSetMLevelChange);
 ArduinoCloud.addProperty(RunPump, READWRITE, ON_CHANGE, onRunPumpChange);
}
WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);

第 5 步：設置 Internet 連接

在 Arduino 編輯器的“秘密”選項卡中，設置您的無線網絡 ID 和密碼。測試并確保您的設備正確連接到云。

風險

運行這個項目有幾個風險。

• 短路的可能性：該項目中用水會造成危險，因此可能會以“試運行”的形式進行測試。

• 項目結果可能無法準確工作，因為傳感器讀數可能不一致或結果解釋不準確。