CHAPTER V IMPLEMENTATION AND TESTING 5.1 Implementation 5.1.1 Arduino IDE

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5.1 Implementation

5.1.1 Arduino IDE

This project uses the arduino IDE application. This application

used to compile and to upload the program. The program can be seen

as below:

1. Libraries.

#include <ESP8266WiFi.h>

#include "ThingSpeak.h"

#include <Time.h>

#include <TimeAlarms.h>

#include <Servo.h>

#include <SPI.h>

#include <SD.h>

2. Setting the name and the password of WiFi.

const char* ssid = "redmiku";

const char* password = "123456789";

3. Setting the name of server (thingspeak and IP laptop/PC), setting

channel of IoT, and setting API of IoT.

unsigned long myChannelNumber = 156758;

const char * myWriteAPIKey = "R9VHNWY87JFE23QW";

const char* server = "api.thingspeak.com";

const char* server1 = "192.168.43.171"; //ip laptop

4. Declaring variable and pinout will be used.

const int chipSelect = D4; //pin of micro SD module

int trigAir =D0; // pin trigger of the HC-SR04

int echoAir =D1; // pin echo of HC-SR04

int tinggiAir; //used to save the water level

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int tinggiEmber=21; // set the height of aquarium

int trigPin =D2; // pin trigger of the HC-SR04

int echoPin =D3; // pin echo of HC-SR04

float volume; // used to save the volume of fish feed can

int tinggiPenampung=15; // set the height of fish feed can

int tinggiPakan; // used to save the height of fish feed

int buzzer =D2; // pin of buzzer

5. Setting transfer rate to serial and setting sensor as input/output.

Serial.begin(115200);

6. Declaring micro servo variable and pin will be used. Setting the

angle of micro servo.

myservo1.attach(D8); //servo penampung

myservo1.write(0);

7. Connecting to WiFi.

Serial.println();

Serial.print("Connecting");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

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8. Detecting micro sd memory.

if (!SD.begin(chipSelect))

{

Serial.println("Card does not exists");

// don't do anything more:

return;

}

Serial.println("card initialized.");

9. Detecting file jam.txt. The time.txt used to setting the clock.

File dataFile3 = SD.open("time.txt");

// if the file is available, write to it:

Serial.println(data1);

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setTime(data1,data2,data3,data4,data5,data6); //setting the

clock

}

// if the file isn't open, pop up an error:

else {

Serial.println("error opening time.txt");

}

dataFile3.close();

10. Detecting alarm.txt. The alarm.txt used to schedule. The schedule

used to open and to close the door of fish feed can.

File dataFile = SD.open("alarm.txt");

// if the file is available, write to it:

if (dataFile) {

while (dataFile.available()) {

int dataalarm1 = dataFile.parseInt(); // ambil data ke-1

dan parsing ke int

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int dataalarm1 = dataalarm1;

Serial.println(dataalarm1);

Alarm.alarmRepeat(dataalarm1,dataalarm2,dataalarm3,

Penampung); /*alarm tiap hari*/

Alarm.alarmRepeat(dataalarm4,dataalarm5,dataalarm6,

Penampung); /*alarm tiap hari*/

}

else {

Serial.println("error opening alarm.txt");

}

dataFile.close();

11. Setting count of micro servo when opened and closed.

void Penampung()

{

Serial.println("SERVO BUKAA");

myservo1.write(70);

delay(550); //DELAY 0.5 DETIK

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delay(550);

12. The measurement of the volume of fish feed can and the water

level.

void loop() {

long duration, distance;

long durationAir, distanceAir;

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

digitalWrite(trigPin, HIGH);

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

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volume = 3.14*8.6*8.6*tinggiPakan;

digitalWrite(trigAir, LOW);

digitalWrite(trigAir, HIGH);

digitalWrite(trigAir, LOW);

durationAir = pulseIn(echoAir, HIGH);

distanceAir = (durationAir/2) / 29.1;

tinggiAir = tinggiEmber-distanceAir;

Serial.print("\n");

if (distance>=16){

distance=0;

tone(buzzer,1000);

}

if (distance >= 30 || distance <= 0){

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Serial.println("Jarak diluar jangkauan!");

}

else {

Serial.print("jarak= ");

Serial.print(distance);

Serial.println(" cm");

Serial.print("Tinggi Pakan= ");

Serial.print(tinggiPakan);

Serial.print(" cm");

Serial.print("Volume= ");

Serial.print(volume);

Serial.println("cm3");

noTone(buzzer);

}

if (distanceAir > 21 || distanceAir <= 0){

distanceAir = 0;

Serial.println("Jarak diluar jangkauan!");

}

else {

Serial.print("jarak= ");

Serial.print(distanceAir);

Serial.println(" cm");

Serial.print("Tinggi Air= ");

Serial.print(tinggiAir);

Serial.println(" cm\n");

}

13. Setting the field will be sent to IoT server.

ThingSpeak.setField(1,volume);

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14. Sending data (volume, date, month, year, hour, minute, second,

the water level) to a computer using HTTP protocol.

if (client.connect(server1, 80)) {

client.print("GET /tes/coba.php?"); // the address file to save in

txt file

client.print("volume=");

client.print(volume);

client.print("&&");

client.print("tanggal=");

client.print(day());

client.print("&&");

client.print("bulan=");

client.print(month());

client.print("&&");

client.print("tahun=");

client.print(year());

client.print("&&");

client.print("jam=");

client.print(hour());

client.print("&&");

client.print("menit=");

client.print(minute());

client.print("&&");

client.print("detik=");

client.print(second());

client.print("&&");

client.print("tinggiAir=");

client.print(tinggiAir);

client.println(" HTTP/1.1"); // Part of the GET request

client.println("Host: 192.168.43.171"); // IP address laptop

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telling the server that we are over transmitting the message

// If Arduino can't connect to the server (your computer or web

page)

Serial.println("--> connection failed\n");

}

15. Sending data (volume and the water level) to IoT server.

ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

delay(15000); // ThingSpeak will only accept updates every 15

seconds.

5.1.2 PHP File

In this project PHP file use to get the data (volume, date, month,

year, hour, minute, second, the water level) from sensor. After that,

save the data to txt file.

<html>

<body>

<?php

if(isset($_GET["volume"]) && isset($_GET["tanggal"]) &&

isset($_GET["bulan"])&& isset($_GET["tahun"]) && isset($_GET["jam"])

&& isset($_GET["menit"]) && isset($_GET["detik"]) &&

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$jam = $_GET["jam"];

$menit = $_GET["menit"];

$detik = $_GET["detik"];

$tinggiAir = $_GET["tinggiAir"];

$file = fopen("coba.txt","a"); //a untuk menambah data,

w untuk menulis baru

if($file)

{

fputs($file,$tanggal."-".$bulan."-".$tahun."\n");

fputs($file,$jam.":".$menit.":".$detik."\n");

fputs($file,"Volume Pakan=".$volume."\n");

fputs($file,"Tinggi Air=".$tinggiAir."\n\n");

}

fclose($file);

}

else{

echo "data tidak ada ";

}

echo "Isi dari file coba.txt sekarang: ";

$file = fopen("coba.txt","r");

while(! feof($file))

{

echo fgets($file). " ";

}

fclose($file);

?>

</body>

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5.2 Testing

The figure below shows how the nodeMCU connected to the WiFi,

the nodeMCU detected the micro SD memory, the nodeMCU detected

the time.txt and the alarm.txt, the nodeMCU reading the HC-SR04

sensor in measuring the distance, the nodeMCU reading the volume,

the nodeMCU reading the water level, the volume and the water level

in txt file, the volume and the water level in IoT server.

1. Connecting to the WiFi.

When the nodeMCU connected to the WiFi, the nodeMCU

will get an IP address. The IP address will be print in serial monitor.

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2. Detecting the micro SD Memory.

When the micro SD memory detected, the serial monitor will

be print “card initialized”.

Figure 9: Detecting Micro SD Memory

3. Detecting the time.txt and the alarm.txt.

The time.txt used to set the time in nodeMCU. The alarm.txt

used to set the schedule to open and to close the door of fish feed

can. When the time.txt and the alarm.txt detected, the serial monitor

will be print the contain of time.txt and the contain of the alarm.txt.

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4. Setting the time.

After detected the time.txt in micro SD memory, the time will

be set. The time will be loop in this program.

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5. Measuring the distance using HC-SR04 sensor.

The HC-SR04 sensor will read the distance of fish feed can

and read the distance of the water level. The distance will be print in

serial monitor (jarak). The height of fish feed will be print too in

serial monitor. To determine the height of fish feed, this program

setting the height of canned fish feed beforehand. After that, the

height of canned fish feed minus the distance. To calculating

volume of fish feed can, this program using tube volume formula.

After that the volume will be print in serial monitor.

The distance and the water level will be print in serial

monitor. But to know the water level this program set the height of

aquarium. After that the height if aquarium minus the distance.

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6. Saving the volume and the water level in txt file.

The volume and the water level will be saving in txt file via

XAMPP every 25 second.

Figure 13: Saving the volume and the water level in txt file

7. Saving the volume and the water level in IoT server (thingspeak).

The volume and the water level will be saving in IoT server

every 25 second.