Description
Step 1: NXP Rapid IoT Studio
Step 2: NXP Rapid IoT Prototype Kit
Step 2.1: Without docker station
Step 3: NodeMCU
Step 4: Google Firebase
Step 5: Android Studio
Step 6: Testing project
Step 7: Conclusion

Published January 29, 2019 © GPL3+

Smart Plant House

NXP Rapid IoT Prototype Kit + NodeMCU + Google Firebase + Android Studio.

ExpertFull instructions providedOver 1 day746

Things used in this project

Hardware components

NXP Rapid IoT Prototyping Kit

NodeMCU ESP8266 Breakout Board

SparkFun Soil Moisture Sensor (with Screw Terminals)

Water pump

Telecontrolli Ceramic Capacitive Rain Sensor

HC-05 Bluetooth Module

OpenBuilds NEMA 17 Stepper Motor

SparkFun Dual H-Bridge motor drivers L298

Relay (generic)

HC-06 Bluetooth Module

Software apps and online services

NXP Rapid IOT

Google Firebase

Arduino IDE

Android Studio

Story

My free NXP Rapid IoT Prototype Kit has arrived. Thanks for the product and quick delivery. Images show device testing for the basic model "Rapid IoT Kit Out Of Box Demo firmware.bin"

1 / 3 • NXP Rapid IoT Prototype Kit

Description:

I made communication with Rapid IoT Prototype Kit and Android application. This communication is realized through the connection between NodeMCU and Google Firebase. Rapid IoT Prototype Kit sends data via BLE to NodeMCU. NodeMCU this data sends to Google Firebase via WiFi. My Android application picks up data of Google Firebase and sends control button value to Firebase. If button in application is active, this will trigger the opening of the window and/or activate water pump. The complete communication between certain devices of my project is shown in the following picture:

Communication system

Step 1: NXP Rapid IoT Studio

Create design of project in NXP Rapid IoT Studio. Bellow photo is schematic in this Studio.

NXP Rapid IoT Studio Project

NXP Rapid IoT Studio project is added on attachmenth. We see that NXP Rapid IoT Prototype will send sensor data (temperature, humidity, air quality, pressure, ambient light) using BLE. The way of loading.bin file on NXP Rapid Prototype Kit is specified in NXP documentation.

Step 2: NXP Rapid IoT Prototype Kit

Connecting additional components to the NXP Rapid IoT Prototype Kit is achieved using the docker station.

This components include:

Water pump,
Window control motor,
Soil moisture,
Rain sensor (optional).

The way the connection is made is shown on photo:

Schema (NXP Rapid IoT+Docker Station+Sensors)

Step 2.1: Without docker station

If you don't have a docker station for the NXP Rapid Prototype Kit, the scheme with NodeMCU that will receive data from the NXP Rapid Prototype Kit via BLE and control other components, is listed below.

Schema (with out docker station)

Step 3: NodeMCU

Now that connection is made, it is necessary to connect, via BLE, NXP Rapid IoT Kit and NodeMCU. The schematic below illustrates the connection of HC-05 (HC-06) and NodeMCU. Code needed to upload on NodeMCU is added as nodemcu_code_for_ble_senddata_to_firebase.ino.

Schema (Connect NodeMCU and BLE HC-05)

NodeMCU also connects to a Wi-Fi that is defined at the beginning by the name wifi_name and password wifi_password. The code also stated that the data that is present on NodeMCU is sent to Google Firebase.

Step 4: Google Firebase

Google Firebase serves to store data collected on the NodeMCU and NXP Rapid IoT Prototype Kit. These datas can be further used on websites, mobile applications and anywhere they can access the Internet. Sign in using your Google Account and follow the steps below.

After login follow the next steps:

1. Click on "+ Add project"

2. Fill information and click "Create"

3. After loading, click "Develop" in left navigation bar. Then click "Database"

4. Click "Create database" then chack "Start in test mode" and click "Enable"

5. Next of "Database" title in the drop-down menu, select "Realtime Database"

6. Click on "Roles" tab. In code delete "false" and add "true".

7. Back to "Data" tab. Copy link of your database and insert in Arduino code.

8. Click on icon gear (left navigation bar) choose "Projects settings" and click on "Service accounts" choose "Database secrets".

9. On right copy "Secret" code and insert in Arduino code.

Now, we've connected NodeMCU and Google Firebase. After upload Arduino code in NodeMCU in Google Firebase will appear variables as on this photo:

Google Firebase (Realtime Database)

- "S1" is control for Servo motor.

S1 = 0 - servo motor is OFF,
S1 = 1 - servo motor is turn ON for OPEN window,
S1 = 2 - sevo motor is turn ON for CLOSE window.

- "S2" is control for water pump.

S2 = 0 - Water pump is OFF,
S2 = 1 - Water pump is ON.

- airquality, ambientlight, hum (humidity), pressure, soilmoisture, temp (temperature) is sensor data from NXP Rapid IoT Prototype.

Names for this variables in FireBase come from NXP Rapid IoT Prototype Kit. There names are defined in NXP Rapid IoT studio.

Example for temperature:

Temperature name in NXP Rapid IoT Studio

Step 5: Android Studio

In activity_main.xml is presented implementation appearance of the application. For each variable, RelativeLayout and background color are defined. A title is also placed within RelativeLayout and the TextView of the models for entering the value of the obvious is added. Buttons for controlling the servo motor and water pump are added. Model for this Andriod application is shown on photo.

Android Studio application

MainActivity.java is the way to link TextView plugins to an XML file with Google Firebase data.

Step 6: Testing project

I don't have a docker station, but I managed to make the entire system that will be controlled by NodeMCU for window control and water pump (yellow LED).

1 / 3

And at the end of video functionality:

Step 7: Conclusion

Styrofoam is set as an example of a construction (which should be metal), covered with transparent nylon or glass windows. The roof would also be transparent (nylon or window).

In conclusion, with more investment, a smart greenhouse (Smart Plant House) could be built with using the NXP Rapid IoT Prototype Kit as basic system for communicating around the environment.

Schematics

Code

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:background="@drawable/bckg">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:gravity="center"
        android:background="@color/background1"
        android:alpha="0.5"></RelativeLayout>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:text="Smart Plant House"
        android:textColor="#d9d9d9"
        android:textSize="30dp"
        android:gravity="center"
        android:textStyle="bold" />


    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="75dp"
        android:layout_marginLeft="22dp"
        android:layout_marginRight="20dp"
        android:layout_marginBottom="50dp">

<!---TEMPERATURE-->
        <RelativeLayout
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#475385"
            android:textAlignment="center"
            android:gravity="top">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Temperature"
                android:textSize="12dp"
                android:textColor="#d9d9d9"
                android:textAlignment="center"/>

            <TextView
                android:id="@+id/text_temp"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="NaN"
                android:textSize="25dp"
                android:textColor="#d9d9d9"
                android:gravity="center"/>




        </RelativeLayout>
        <!---HUMIDITY-->
        <RelativeLayout
            android:layout_marginLeft="107dp"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#465B76"
            android:textAlignment="center"
            android:gravity="top">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Humidity"
                android:textSize="12dp"
                android:textColor="#d9d9d9"
                android:textAlignment="center"/>

            <TextView
                android:id="@+id/text_hum"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="NaN"
                android:textColor="#d9d9d9"
                android:textSize="25dp"
                android:gravity="center"/>


        </RelativeLayout>

        <!---SOIL MOISTURE-->
        <RelativeLayout
            android:layout_marginLeft="215dp"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#456683"
            android:textAlignment="center"
            android:gravity="top">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Soil Moisture"
                android:textSize="12dp"
                android:textColor="#d9d9d9"
                android:textAlignment="center"/>
            <TextView
                android:id="@+id/text_soil"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="NaN"
                android:textColor="#d9d9d9"
                android:textSize="25dp"
                android:gravity="center"/>


        </RelativeLayout>


        <!---AMBIENT LIGHT-->
        <RelativeLayout
            android:layout_marginTop="120dp"
            android:layout_marginLeft="215dp"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#848448"
            android:textAlignment="center"
            android:gravity="top">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Ambient Light"
                android:textSize="12dp"
                android:textColor="#d9d9d9"
          android:textAlignment="center"/>
            <TextView
                android:id="@+id/text_light"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="NaN"
                android:textColor="#d9d9d9"
                android:textSize="25dp"
                android:gravity="center"/>


        </RelativeLayout>


        <!---AIR QUALITY-->
            <RelativeLayout
                android:layout_marginTop="120dp"
                android:layout_marginLeft="107dp"
                android:layout_width="100dp"
                android:layout_height="100dp"
                android:background="#847959"
                android:textAlignment="center"
                android:gravity="top">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="Air Quality"
                    android:textSize="12dp"
                    android:textColor="#d9d9d9"
                    android:textAlignment="center"/>

                <TextView
                    android:id="@+id/text_air"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:text="NaN"
                    android:textColor="#d9d9d9"
                    android:textSize="25dp"
                    android:gravity="center"/>


            </RelativeLayout>

        <!---PRESSURE-->
        <RelativeLayout
            android:layout_marginTop="120dp"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#846062"
            android:textAlignment="center"
            android:gravity="top">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Pressure"
                android:textSize="12dp"
                android:textColor="#d9d9d9"
                android:textAlignment="center"/>
            <TextView
                android:id="@+id/text_press"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:text="NaN"
                android:textColor="#d9d9d9"
                android:textSize="25dp"
                android:gravity="center"/>



        </RelativeLayout>

        <RelativeLayout
            android:layout_width="315dp"
            android:layout_height="80dp"
            android:layout_marginTop="260dp"
            android:background="@color/background1"
            android:alpha="0.7">
            </RelativeLayout>

<RelativeLayout
    android:layout_width="315dp"
    android:layout_height="80dp"
    android:layout_marginTop="260dp"
    >

    <TextView
        android:layout_marginLeft="5dp"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="Window control:"
        android:gravity="center"
        android:textColor="#d9d9d9"
        android:textSize="25dp"/>

    <Button
        android:id="@+id/btn_windowOPEN"
        android:layout_width="70dp"
        android:layout_height="40dp"
        android:text="OPEN"
        android:layout_marginLeft="210dp"
        android:gravity="center"
        android:layout_marginTop="2dp"/>
    <Button
        android:id="@+id/btn_windowCLOSE"
        android:layout_width="70dp"
        android:layout_height="40dp"
        android:text="CLOSE"
        android:layout_marginLeft="210dp"
        android:gravity="center"
        android:layout_marginTop="38dp"/>



</RelativeLayout>

        <RelativeLayout
            android:layout_width="315dp"
            android:layout_height="50dp"
            android:layout_marginTop="370dp"
            android:background="@color/background1"
            android:alpha="0.7"
            ></RelativeLayout>
<RelativeLayout
            android:layout_width="315dp"
            android:layout_height="50dp"
            android:layout_marginTop="370dp"
            >

    <TextView
        android:layout_marginLeft="5dp"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="Water Pump:"
        android:textColor="#d9d9d9"
        android:gravity="center"
        android:textSize="25dp"/>

    <Button
        android:id="@+id/btn_waterpumpOFF"
        android:layout_width="50dp"
        android:layout_height="40dp"
        android:text="OFF"
        android:layout_marginLeft="200dp"
        android:gravity="center"
        android:layout_marginTop="5dp"
        />
    <Button
        android:id="@+id/btn_waterpumpON"
        android:layout_width="50dp"
        android:layout_height="40dp"
        android:text="ON"
        android:layout_marginLeft="250dp"
        android:gravity="center"
        android:layout_marginTop="5dp"/>



</RelativeLayout>

</RelativeLayout>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_marginTop="510dp"
        android:gravity="center"
        android:background="@color/background1"
        android:alpha="0.5"
        ></RelativeLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_marginTop="510dp"
        android:gravity="center">
        <ImageView
            android:layout_width="120dp"
            android:layout_height="60dp"
            android:src="@drawable/nxprapid"
            />
    </RelativeLayout>



   </RelativeLayout>

package com.example.elmin.smartplanthouse;

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Switch;
import android.widget.TextView;

import com.google.firebase.FirebaseApp;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.messaging.FirebaseMessaging;

public class MainActivity extends AppCompatActivity {


    DatabaseReference dref;
    TextView text_temperature, text_humidity, text_airquality, text_soilmoisture, text_pressure, text_ambientlight;
    String temperature, humidity, airquality, soilmoisture, pressure, ambientlight;
    Button btn_on1, btn_on2, btn_off2, btn_on12;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        btn_on1 = (Button) findViewById(R.id.btn_windowOPEN);
        btn_on2 = (Button) findViewById(R.id.btn_waterpumpON);
        btn_on12 = (Button) findViewById(R.id.btn_windowCLOSE);
        btn_off2 = (Button) findViewById(R.id.btn_waterpumpOFF);


        text_temperature = (TextView) findViewById(R.id.text_temp);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                temperature = dataSnapshot.child("temp").getValue().toString();
                text_temperature.setText(temperature + "°C");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

        text_humidity = (TextView) findViewById(R.id.text_hum);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                humidity = dataSnapshot.child("hum").getValue().toString();
                text_humidity.setText(humidity + "%");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

        text_airquality = (TextView) findViewById(R.id.text_air);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                airquality = dataSnapshot.child("airquality").getValue().toString();
                text_airquality.setText(airquality + "ppb");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });


        text_pressure = (TextView) findViewById(R.id.text_press);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                pressure = dataSnapshot.child("pressure").getValue().toString();
                text_pressure.setText(pressure + "hPa");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

        text_soilmoisture = (TextView) findViewById(R.id.text_soil);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                soilmoisture = dataSnapshot.child("soilmoisture").getValue().toString();
                text_soilmoisture.setText(soilmoisture + "rh");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });

        text_ambientlight = (TextView) findViewById(R.id.text_light);
        dref = FirebaseDatabase.getInstance().getReference();
        dref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                ambientlight = dataSnapshot.child("ambientlight").getValue().toString();
                text_ambientlight.setText(ambientlight + "lx");

            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {

            }
        });


        btn_on2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("S2");

                myRef.setValue(1);
            }
        });

        btn_off2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("S2");

                myRef.setValue(0);
            }
        });



        btn_on1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("S1");

                myRef.setValue(1);
            }
        });


        btn_on12.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("S1");

                myRef.setValue(2);
            }
        });

    }
}

#include <PubSubClient.h>
#include <FirebaseArduino.h>
#include  <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <ArduinoJson.h>
#include <Firebase.h>
#include <FirebaseCloudMessaging.h>
#include <FirebaseError.h>
#include <FirebaseHttpClient.h>
#include <FirebaseObject.h>



#define FIREBASE_HOST "firebase_link"
#define FIREBASE_AUTH "firebase_id"

#define WIFI_SSID "wifi_name"
#define WIFI_PASSWORD "wifi_password"



void setup() {  

  
       WiFi.begin (WIFI_SSID, WIFI_PASSWORD);
        while (WiFi.status() != WL_CONNECTED) {
           delay(500);
            Serial.print(".");
  
         }
          Serial.println ("");
          Serial.println ("WiFi Connected!");
          Serial.println(WiFi.localIP());
     Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

 
}

void loop() {

//BLE read data
if (Serial.available()) {;}
float temp = Serial.read(); 
Firebase.setFloat("temp", temp);
delay(100);

float hum = Serial.read();
Firebase.setFloat("hum", hum);
delay(100);

int pressure = Serial.read();
Firebase.setInt("pressure", pressure);
delay(100);

int ambientlight = Serial.read();
Firebase.setInt("ambientlight", ambientlight);
delay(100);

int airquality = Serial.read();
Firebase.setInt("airqualtiy", airquality);
delay(100);

int soil = Serial.read();
Firebase.setInt("soilmoisture", soil);
delay(100);

int S1 = Firebase.getInt("S1");
Serial.write(S1);
delay(100);

int S2 = Firebase.getInt("S2");
Serial.write(S2)
delay(100);

}

#include <PubSubClient.h>
#include <FirebaseArduino.h>
#include <ESP8266WiFi.h>
#include <ArduinoJson.h>


#define FIREBASE_HOST "firebase_link"
#define FIREBASE_AUTH "firebase_id"

#define WIFI_SSID "wifi_name"
#define WIFI_PASSWORD "wifi_password"


int IN1 = 12, IN2 = 13, IN3 = 14, IN4 = 15, water_out = 5; //16,5,4,0
#define x 5000

void setup() {  

      pinMode(water_out, OUTPUT);
      pinMode(IN1, OUTPUT);
      pinMode(IN2, OUTPUT);
      pinMode(IN3, OUTPUT);
      pinMode(IN4, OUTPUT);


  
       WiFi.begin (WIFI_SSID, WIFI_PASSWORD);
        while (WiFi.status() != WL_CONNECTED) {
           delay(500);
            Serial.print(".");
  
         }
          Serial.println ("");
          Serial.println ("WiFi Connected!");
          Serial.println(WiFi.localIP());
     Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

 
}

void loop() {

//!!!!!!!!!!!!!!!!!!BLE read data!!!!!!!!!!!!!!!!!!!!!!
if (Serial.available()) {;}
float temp = Serial.read(); 
Firebase.setFloat("temp", temp);
delay(100);

float hum = Serial.read();
Firebase.setFloat("hum", hum);
delay(100);

int pressure = Serial.read();
Firebase.setInt("pressure", pressure);
delay(100);

int ambientlight = Serial.read();
Firebase.setInt("ambientlight", ambientlight);
delay(100);

int airquality = Serial.read();
Firebase.setInt("airqualtiy", airquality);
delay(100);

// !!!!!!!!!!!!!!!!!!!!Window control!!!!!!!!!!!!!!!!!!!!!

int window = Firebase.getInt("S1");

if (window == 1) {  
for (int i=0; i<50; i++) {
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);
  delay(5);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);
  delay(5);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
  delay(5);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
  delay(5);
  }
  Firebase.setInt("S1", 0);}
  
if (window == 2) {

  for (int i=0; i<50; i++) {
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
  delay(5);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
  delay(5);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);
  delay(5);
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);
  delay(5);
  }
  Firebase.setInt("S1", 0);
} else {
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);
  }

// !!!!!!!!!!!!!!!!!!water pump!!!!!!!!!!!!!!!!!!!!!!
int water_pump = Firebase.getInt("S2");

if (water_pump > 0) {
  digitalWrite(water_out, HIGH);
} else {
  digitalWrite(water_out, LOW);
}

// !!!!!!!!!!!!!!!!!!Soil Moisture!!!!!!!!!!!!!!!!!!!
float soil = digitalRead(A0);
Firebase.setFloat("soilmoisture", soil);

}

Credits

Elmin Delibašić

12 projects • 81 followers

Bachelor of Electrical Engineering || Enthusiast for AI and IoT || Master Student at Faculty of Electrical Engineering