第 3 步：代碼 [.ino]

將以下代碼復(fù)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(shè)置 Internet 連接

在 Arduino 編輯器的“秘密”選項(xiàng)卡中，設(shè)置您的無(wú)線網(wǎng)絡(luò) ID 和密碼。測(cè)試并確保您的設(shè)備正確連接到云。

風(fēng)險(xiǎn)

運(yùn)行這個(gè)項(xiàng)目有幾個(gè)風(fēng)險(xiǎn)。

• 短路的可能性：該項(xiàng)目中用水會(huì)造成危險(xiǎn)，因此可能會(huì)以“試運(yùn)行”的形式進(jìn)行測(cè)試。

• 項(xiàng)目結(jié)果可能無(wú)法準(zhǔn)確工作，因?yàn)?a target='_blank' class='arckwlink_none'>傳感器讀數(shù)可能不一致或結(jié)果解釋不準(zhǔn)確。