Published January 30, 2018

Simple Plants Monitoring System

With this Simple Plants Monitoring System you no need to worry about your garden anymore.

BeginnerWork in progress2 hours2,951

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

SparkFun Soil Moisture Sensor (with Screw Terminals)

DHT22 Temperature Sensor

LED (generic)

Breadboard (generic)

Jumper wires (generic)

Software apps and online services

Arduino IDE

Blynk

Story

Background project

When a family wanna take a overseas holiday for a week. They have some problems that they can’t left their garden just like that in the summer season or the plants will die. Meanwhile, the garden is already have an automatic watering system but, they seems still too worry about their garden.

With this simple plant monitoring system they no need to worry about their garden anymore. By using the Internet Of Things (IoT) Plant Monitoring system for the garden they can always monitoring the garden anytime and anywhere they want through Mobile Apps called Blynk.

How the tool works

Soil moisture sensor works by pluging the sensor into theplant pot or soil then the sensor will read the soil moisture. Meanwhile, DHT 22is for calculating the air temperature and air humidity.

Required Equipment

Hardware Component

ESP8266 module

USB Cable

DHT 22

Soil Moisture Sensor

3 leds ( RGB )

Bread board

Jumper Wires

Software Os and Apps

Arduino IDE

Blynk

Schematics

The schematic is simple, follow the instructions below.

Pin D5 to LED1

Pin D6 toLED2

Pin D7 toLED3

Pin A0 toA0 on Soil Moisture Sensor

GNDto GNDon Soil Moisture Sensor

3V3to VCC on Soil Moisture Sensor

Pin D1 tomiddle side of DHT 22

GNDto right side of DHT 22

3V3to left side of DHT 22

GND to groundside of Breadboard

Soil moisture sensor using Analog pin (A0), DHT 22 usingGPIO 5 pin, and 3 Leds using GPIO 14 for RED, GPIO 12 for GREEN, and GPIO 13for BLUE on ESP8266. Setup the ESP8266 board to connect to Wifi by define yourSSID, Password and Auth Code for Blynk. For the Auth Code you need to download Blynk Apps on your Mobile Phone then create a new project on Blynk Apps and find your Auth Code in project setting.

Code

Plant Monitoring System Code

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
#define DHTPIN 5
#define DHTTYPE DHT22

char auth[] = "82a1d1d9d23d40e9aa4f4650b46eb1a6";
char ssid[] = "Andrew";
char pass[] = "Andrew8266";

int LED1 = 14;
int LED2 = 12;
int LED3 = 13;
int m=0;
float h=0;
float t=0;
float mf=0;
int pinMoist=A0;

DHT dht(DHTPIN, DHTTYPE);


void setup()
{
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);
  pinMode(LED1,OUTPUT);
  pinMode(LED2,OUTPUT);
  pinMode(LED3,OUTPUT);
  dht.begin();
}

void loop()
{
  Blynk.run();
  h = dht.readHumidity();
  t = dht.readTemperature();
  Blynk.virtualWrite(V5, t);                                 
  Blynk.virtualWrite(V6, h);  
  m = analogRead(pinMoist);
  Blynk.virtualWrite(V7, m);
  if (m <= 341)
  {
   digitalWrite(LED3,HIGH);
   digitalWrite(LED1,LOW);
   digitalWrite(LED2,LOW);
  }

  else if (m >= 342 && m <= 500)
  {
   digitalWrite(LED2,HIGH);
   digitalWrite(LED1,LOW);
   digitalWrite(LED3,LOW);
  }

    else if (m >=700)
  {
   digitalWrite(LED1,HIGH);
   digitalWrite(LED2,LOW);
   digitalWrite(LED3,LOW);
  }
}

Credits

Andrew Wie

1 project • 2 followers

Simple Plants Monitoring System

Things used in this project

Hardware components

Software apps and online services

Story

Background project

How the tool works

Required Equipment

Schematics

Schematics

001

001_wdJk1sEI9B.jpeg

Code

Plant Monitoring System Code

Plant Monitoring System

Credits

Andrew Wie

Comments

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Simple Plants Monitoring System

Simple Plants Monitoring System

Things used in this project

Hardware components

Software apps and online services

Story

Background project

How the tool works

Required Equipment

Schematics

Schematics

001

001_wdJk1sEI9B.jpeg

Code

Plant Monitoring System Code

Plant Monitoring System

Credits

Andrew Wie

Comments

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