.

Membuat Simulasi Komunikasi 2 Mikrokontroller Menggunakan 2 Serial UART Master Slave / kirim terima BASCOM AVR

Pada kesempatan yang berbahagia kali ini saya akan menjelaskan mengenai sebuah simulasi dari 2 buah mikrokontroller yang saling berhubungan menggunakan 2 buah serial UART yang mana masing masing mikrokontroller bertindak sebagai master dan slave. jadi saat tombol ditekan pada mikro 1 maka led yang berada pada mikro 2 akan menyala begitu juga jika tombol yang ada pada mikro 2 ditekan maka led pada mikro 1 akan menyala. kemudian pada mikro 1 terdapat sensor yang mana nilai sensor ditampilkan ke 2 buah mikrokontroller yaitu mikro 1 dan mikro 2. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Skema Alat

b. Program Mikro 1

$regfile = "m128def.dat"

$crystal = 12000000

$baud = 9600

Config Lcdpin = Pin , Rs = Portd.0 , E = Portd.1 , Db4 = Portd.6

Config Lcdpin = Pin , Db5 = Portd.7 , Db6 = Portd.4 , Db7 = Portd.5

Config Lcd = 16 * 2

Config Com1 = 9600 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Config Com2 = 9600 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Open "com1:" For Binary As #1

Open "Com2:" For Binary As #2

Cls

Cursor Off

On Urxc Getchar

Dim Wtime As Word

Dim Inchar As String * 1

Dim Inchar2 As Word

Dim A As Byte

Enable Interrupts

Enable Urxc

Config Pinb.0 = Output

Config Pinb.1 = Output

Config Pine.2 = Input

Config Pine.3 = Input

Config Pine.4 = Input

Config Pine.5 = Input

Config Pine.6 = Input

Porte.2 = 1

Porte.3 = 1

Porte.4 = 1

Porte.5 = 1

Porte.6 = 1

A = Waitkey(#2)

Upperline

Lcd A

If Pine.2 = 1 And Pine.3 = 1 And Pine.4 = 1 And Pine.5 = 1 And Pine.6 = 1 Then

Print #1 , "9"

End If

If Pine.2 = 0 And Pine.3 = 1 And Pine.4 = 1 And Pine.5 = 1 And Pine.6 = 1 Then

Print #1 , "0"

End If

If Pine.2 = 0 And Pine.3 = 0 Then

Print #1 , "1"

End If

If Pine.2 = 0 And Pine.4 = 0 Then

Print #1 , "2"

End If

If Pine.2 = 0 And Pine.5 = 0 Then

Print #1 , "3"

End If

If Pine.2 = 0 And Pine.6 = 0 Then

Print #1 , "4"

End If

If Pine.2 = 1 And Pine.3 = 0 Then

Print #1 , "5"

End If

If Pine.2 = 1 And Pine.4 = 0 Then

Print #1 , "6"

End If

If Pine.2 = 1 And Pine.5 = 0 Then

Print #1 , "7"

End If

If Pine.2 = 1 And Pine.6 = 0 Then

Print #1 , "8"

End If

Loop

Getchar:

Inchar = Inkey(#1)

Select Case Inchar

Case "1" :

Portb.0 = 1

Portb.1 = 1

Case "2" :

Portb.0 = 0

Portb.1 = 1

Case "3" :

Portb.0 = 1

Portb.1 = 0

Case "4" :

Portb.0 = 0

Portb.1 = 0

End Select

Return

End

c. Program Mikro 2

$regfile = "m128def.dat"

$crystal = 12000000

$baud = 9600

Config Lcdpin = Pin , Rs = Porte.2 , E = Portd.7 , Db4 = Porte.3

Config Lcdpin = Pin , Db5 = Porte.4 , Db6 = Porte.5 , Db7 = Porte.6

Config Lcd = 16 * 2

Config Adc = Single , Prescaler = Auto , Reference = Avcc

Config Com1 = 9600 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Config Com2 = 9600 , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Open "com1:" For Binary As #1

Open "Com2:" For Binary As #2

On Urxc Getchar

Dim Dataadc As Word

Dim Wtime As Word

Dim Inchar As String * 1

Enable Interrupts

Enable Urxc

Cls

Cursor Off

Config Pinb.2 = Output

Config Pinb.3 = Output

Config Pinb.5 = Output

Config Pinb.6 = Output

Config Pinb.7 = Output

Config Pinf.0 = Input

Config Pinf.1 = Input

Portf.0 = 1

Portf.1 = 1

Start Adc

Dataadc = Getadc(3)

Locate 1 , 1

Lcd "ADC="

Locate 2 , 1

Lcd Dataadc

Printbin #2 , Dataadc

If Pinf.0 = 0 And Pinf.1 = 0 Then

Print "1"

End If

If Pinf.0 = 0 And Pinf.1 = 1 Then

Print "2"

End If

If Pinf.0 = 1 And Pinf.1 = 0 Then

Print "3"

End If

If Pinf.0 = 1 And Pinf.1 = 1 Then

Print "4"

End If

Loop

Getchar:

Inchar = Inkey(#1)

Select Case Inchar

Case "1" :

Portb.2 = 1

Portb.3 = 1

Portb.5 = 0

Portb.6 = 0

Portb.7 = 0

Case "2" :

Portb.2 = 1

Portb.3 = 0

Portb.5 = 1

Portb.6 = 0

Portb.7 = 0

Case "3" :

Portb.2 = 1

Portb.3 = 0

Portb.5 = 0

Portb.6 = 1

Portb.7 = 0

Case "4" :

Portb.2 = 1

Portb.3 = 0

Portb.5 = 0

Portb.6 = 0

Portb.7 = 1

Case "5" :

Portb.2 = 0

Portb.3 = 1

Portb.5 = 0

Portb.6 = 0

Portb.7 = 0

Case "6" :

Portb.2 = 0

Portb.3 = 0

Portb.5 = 1

Portb.6 = 0

Portb.7 = 0

Case "7" :

Portb.2 = 0

Portb.3 = 0

Portb.5 = 0

Portb.6 = 1

Portb.7 = 0

Case "8" :

Portb.2 = 0

Portb.3 = 0

Portb.5 = 0

Portb.6 = 0

Portb.7 = 1

Case "9" :

Portb.2 = 0

Portb.3 = 0

Portb.5 = 0

Portb.6 = 0

Portb.7 = 0

Case "0" :

Portb.2 = 1

Portb.3 = 0

Portb.5 = 0

Portb.6 = 0

Portb.7 = 0

End Select

Return

End

d. VIDEO HASILNYA

Membuat Alat Monitoring Gas Polutan ( CO / Co2 / NO ) dan Debu Menggunakan Data Logger SD Card / Micro SD ARDUINO

Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang bisa digunakan untuk monitor gas polutan yaitu CO, CO2, NO dll. dan juga debu. alat ini dilengkapi dengan data logger berupa micro SD atau SD card sehingga data akan disimpan kedalam memori. alat ini memang sengaja tidak menggunakan LCD untuk interfacenya. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Arduino Uno

b. Sensor Gas Polutan MQ-7 dan MQ-135

c. Sensor Debu

d. Modul Micro SD

e. Program Arduino IDE

//https://github.com/R2D2-2017/R2D2-2017/wiki/MQ-7-gas-sensor

#include <Wire.h>

#include <SPI.h>

#include <SD.h>

#include "MQ135.h"

#define ANALOGPIN A1 // Define Analog PIN on Arduino Board

#define RZERO 206.85 // Define RZERO Calibration Value

MQ135 gasSensor = MQ135(ANALOGPIN);

float RS_air; // Get the value of RS via in a clear air

float R0 = 0.25; // Get the value of R0 via in H2

float sensorValue;

float sensor_volt;

float RS_gas;

float ratio;

//mosi - 11

//miso - 12

//clk - 13

//cs - 4

int cacah = 0;

File myFile;

int ledx = 2;

float Dustval;

float ppm;

float ppm2;

void setup(){

Serial.begin(9600);

pinMode(ledx,OUTPUT);

float rzero = gasSensor.getRZero();

delay(3000);

Serial.print("MQ135 RZERO Calibration Value : ");

Serial.println(rzero);

}

void loop(){

gasmq135();

gasmq7();

debu();

Serial.print(ppm);

Serial.print(" ");

Serial.print(ppm2);

Serial.print(" ");

Serial.println(Dustval);

delay(200);

cacah++;

if(cacah > 10){

cacah = 0;

simpan();

}

void gasmq135(){

ppm = gasSensor.getPPM();

delay(1000);

//Serial.print("CO2 ppm value : ");

//Serial.println(ppm);

}

void gasmq7(){

analogWrite(A5, 1023);

//Heather 1.4 V 90 s

analogWrite(A5, (1023/5)*1.4 );

for(int i = 0; i<90; i++){

sensorValue = analogRead(A2);

sensor_volt = sensorValue/1024*5.0;

RS_gas = (5.0-sensor_volt)/sensor_volt;

ratio = RS_gas/R0; //Replace R0 with the value found using the calibration code

float kal = 83.39 / ratio;

ppm2 = pow(kal , 0.63);

delay(100);

}

void debu(){

//aktif low

//GP2Y1010AU0F_SAMPLEDELAY should be 280us to perform the correct reading

//this delay should consider that ADC conversion takes 13 ADC clock cycles

//ADCtime(s) = (1/ADCclock)*13 = (1/FCPU/ADCprescaler)*13

// es (1/(8000000/64))*13 = 0.000104s = 104us

//so to perform reading at correct time

//280 - (1/FCPU/ADCprescaler)*13*1000000 , 1000000 is the conversion factor from s to us

// es. 280 - 104 = 176

digitalWrite(ledx,LOW); //on

delayMicroseconds(176);

int dataadc = analogRead(A0);

delayMicroseconds(40);

digitalWrite(ledx,HIGH); //off

delayMicroseconds(9680);

float v = dataadc * (5.0 / 1023.0);

//y = 0.166x - 0.129

Dustval = (v * 0.166) - 0.129;

}

void simpan(){

while (!Serial) {

; // wait for serial port to connect. Needed for Leonardo only

}

Serial.print("Initializing SD card...");

// On the Ethernet Shield, CS is pin 4. It's set as an output by default.

// Note that even if it's not used as the CS pin, the hardware SS pin

// (10 on most Arduino boards, 53 on the Mega) must be left as an output

// or the SD library functions will not work.

pinMode(10, OUTPUT);

if (!SD.begin(4)) {

Serial.println("initialization failed!");

return;

}

Serial.println("initialization done.");

// open the file. note that only one file can be open at a time,

// so you have to close this one before opening another.

myFile = SD.open("test.txt", FILE_WRITE);

// if the file opened okay, write to it:

if (myFile) {

myFile.print("CO2= ");

myFile.println(ppm);

myFile.print("CO= ");

myFile.println(ppm2);

myFile.print("Debu= ");

myFile.println(Dustval);

// close the file:

myFile.close();

Serial.println("done.");

} else {

// if the file didn't open, print an error:

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

}

// re-open the file for reading:

myFile = SD.open("test.txt");

if (myFile) {

Serial.println("test.txt:");

// read from the file until there's nothing else in it:

while (myFile.available()) {

Serial.write(myFile.read());

}

// close the file:

myFile.close();

} else {

// if the file didn't open, print an error:

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

}

f. VIDEO HASILNYA

Membuat Alat Pasien Monitor ( Suhu Tubuh, Heart Beat / HB, GSR / keringat tubuh, Respirasi) Menggunakan Arduino dan Monitor via Android Smartphone

Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat alat yang berfungsi untuk monitor kesehatan pasien mengenai suhu tubuh, heart beat atau detak jantung / HB, GSR atau keringat tubuh, dan respirasi atau laju pernafaan, semua dimonitor dengan waktu satu menit, jadi lama pengambilan HB dan respirasi adalah 1 menit kemudian untuk GSR dan suhu sudah otomatis mendeteksi ketika alat dihidupkan. alat ini bisa mengirimkan hasil ke smartphone android terkait hasil 4 parameter tersebut dan juga terdapat kesimpulan dan saran yang harus dilakukan. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Arduino Uno

b. Bluetooth HC-05

c. Sensor Suhu DS18b20

d. Sensor Pulse / Heart Beat

e. Sensor GSR / Keringat

f. Sensor Suara / Hembusan

g. LCD 16x2 + I2C

h. Program Android

i. Program Arduino

#include "Wire.h"

#include <LiquidCrystal_I2C.h>

#include <OneWire.h>

LiquidCrystal_I2C lcd(0x27,16,2);

OneWire ds(10); // on pin 10 (a 4.7K resistor is necessary)

int n = 0;

int bpm = 0;

int x = 0;

int m = 0;

int resp = 0;

int w = 0;

int suhux = 0;

int bpmx = 0;

int ledgsr = 6;

int ledbpm = 7;

int ledrespirasi = 8;

int ledsuhu = 9;

int bt1 = 2;

int bt2 = 3;

int bt3 = 4;

int bt4 = 5;

int bt1x = 0;

int bt2x = 0;

int bt3x = 0;

int bt4x = 0;

byte i;

byte present = 0;

byte type_s;

byte data[12];

byte addr[8];

float celsius, fahrenheit;

float voltgsr;

void setup() {

Serial.begin(9600);

lcd.begin();

lcd.clear();

lcd.noCursor();

pinMode(ledgsr,OUTPUT);

pinMode(ledbpm,OUTPUT);

pinMode(ledrespirasi,OUTPUT);

pinMode(ledsuhu,OUTPUT);

pinMode(bt1,INPUT_PULLUP);

pinMode(bt2,INPUT_PULLUP);

pinMode(bt3,INPUT_PULLUP);

pinMode(bt4,INPUT_PULLUP);

digitalWrite(ledsuhu,HIGH);

digitalWrite(ledgsr,HIGH);

lcd.setCursor(0, 0);

lcd.print("WELLCOME");

delay(3000);

lcd.clear();

}

void loop() {

n = 0;

m = 0;

lcd.setCursor(0, 0);

lcd.print("Tekan Tombol");

lcd.setCursor(0, 1);

lcd.print("HIJAU");

bt1x = digitalRead(bt1);

bt2x = digitalRead(bt2);

bt3x = digitalRead(bt3);

bt4x = digitalRead(bt4);

if(bt3x == 0){

lcd.clear();

delay(2000);

digitalWrite(ledsuhu,LOW);

digitalWrite(ledgsr,LOW);

digitalWrite(ledbpm,LOW);

digitalWrite(ledrespirasi,LOW);

bpm = 0;

resp = 0;

tampilbpm();

digitalWrite(ledbpm,LOW);

tampilrespirasi();

digitalWrite(ledrespirasi,LOW);

tampilsuhu();

tampilgsr();

kirimbt();

}

digitalWrite(ledbpm,LOW);

digitalWrite(ledrespirasi,LOW);

}

void tampilbpm(){

n = n + 1;

int dataadc1 = analogRead(A1);

lcd.setCursor(0, 0);

lcd.print("n = ");

lcd.print(n);

lcd.setCursor(0, 1);

lcd.print("BPM = ");

lcd.print(bpm);

if ((dataadc1 > 512) && (x > 1)) {

digitalWrite(ledbpm, HIGH);

x = 0;

bpm = bpm + 1;

}

else if ((dataadc1 < 512) && (x < 1)) {

x = 2;

digitalWrite(ledbpm, LOW);

}

delay(200);

if ( n > 300 ) {

lcd.clear();

return;

}

tampilbpm();

}

void tampilrespirasi(){

m = m + 1;

int dataadc2 = analogRead(A2);

lcd.setCursor(0, 0);

lcd.print("m = ");

lcd.print(m);

lcd.setCursor(0, 1);

lcd.print("RESP = ");

lcd.print(resp);

if ((dataadc2 > 512) && (w > 1)) {

digitalWrite(ledrespirasi, HIGH);

w = 0;

resp = resp + 1;

}

else if ((dataadc2 < 512) && (w < 1)) {

w = 2;

digitalWrite(ledrespirasi, LOW);

}

delay(200);

if ( m > 300 ) {

lcd.clear();

return;

}

tampilrespirasi();

}

void tampilsuhu(){

if ( !ds.search(addr)) {

//Serial.println("No more addresses.");

//Serial.println();

ds.reset_search();

delay(250);

return;

}

//Serial.print("ROM =");

for( i = 0; i < 8; i++) {

//Serial.write(' ');

//Serial.print(addr[i], HEX);

}

if (OneWire::crc8(addr, 7) != addr[7]) {

//Serial.println("CRC is not valid!");

return;

}

//Serial.println();

//the first ROM byte indicates which chip

switch (addr[0]) {

case 0x10:

//Serial.println(" Chip = DS18S20"); // or old DS1820

type_s = 1;

break;

case 0x28:

//Serial.println(" Chip = DS18B20");

type_s = 0;

break;

case 0x22:

//Serial.println(" Chip = DS1822");

type_s = 0;

break;

default:

//Serial.println("Device is not a DS18x20 family device.");

return;

}

ds.reset();

ds.select(addr);

ds.write(0x44, 1); // start conversion, with parasite power on at the end

delay(1000); // maybe 750ms is enough, maybe not

// we might do a ds.depower() here, but the reset will take care of it.

present = ds.reset();

ds.select(addr);

ds.write(0xBE); // Read Scratchpad

//Serial.print(" Data = ");

//Serial.print(present, HEX);

//Serial.print(" ");

for ( i = 0; i < 9; i++) { // we need 9 bytes

data[i] = ds.read();

//Serial.print(data[i], HEX);

//Serial.print(" ");

}

//Serial.print(" CRC=");

//Serial.print(OneWire::crc8(data, 8), HEX);

//Serial.println();

// Convert the data to actual temperature

// because the result is a 16 bit signed integer, it should

// be stored to an "int16_t" type, which is always 16 bits

// even when compiled on a 32 bit processor.

int16_t raw = (data[1] << 8) | data[0];

if (type_s) {

raw = raw << 3; // 9 bit resolution default

if (data[7] == 0x10) {

// "count remain" gives full 12 bit resolution

raw = (raw & 0xFFF0) + 12 - data[6];

}

} else {

byte cfg = (data[4] & 0x60);

// at lower res, the low bits are undefined, so let's zero them

if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms

else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms

else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms

//// default is 12 bit resolution, 750 ms conversion time

}

celsius = (float)raw / 16.0;

// lcd.setCursor(0,0);

// lcd.print("SUHU = ");

// lcd.print(celsius);

// lcd.print(" C ");

return;

}

void tampilgsr(){

int dataadc0 = analogRead(A0);

voltgsr = dataadc0 * (4.2 / 1023);

return;

}

void kirimbt(){

bt1x = digitalRead(bt1);

bt2x = digitalRead(bt2);

bt3x = digitalRead(bt3);

bt4x = digitalRead(bt4);

lcd.setCursor(0,0);

lcd.print("SUHU =");

lcd.print(celsius);

if(bt1x == 0){

delay(200);

lcd.setCursor(0,1);

lcd.print("BPM =");

lcd.print(bpm);

lcd.print(" ");

}

if(bt2x == 0){

delay(200);

lcd.setCursor(0,1);

lcd.print("Resp =");

lcd.print(resp);

lcd.print(" ");

}

if(bt4x == 0){

delay(200);

lcd.setCursor(0,1);

lcd.print("GSR =");

lcd.print(voltgsr);

lcd.print(" ");

}

if(bt3x == 0){

lcd.clear();

delay(3000);

return;

}

Serial.print("suhu = ");

Serial.print(celsius);

Serial.println(" c");

Serial.print("BPM = ");

Serial.println(bpm);

Serial.print("Resp = ");

Serial.print(resp);

Serial.println(" kali/menit");

Serial.print("GSR = ");

Serial.print(voltgsr);

Serial.println(" v");

Serial.println(" ");

if ( bpm >= 100 ) {

Serial.println("perbanyak istirahat dan ");

}

else if ( bpm < 60 ) {

Serial.println("segera hubungi dokter ");

}

if ( celsius >= 37.5 ) {

Serial.println("kompres dengan air dingin");

}

else if ( celsius < 34.0 ) {

Serial.println("perbanyak aktifitas ");

}

if ( voltgsr >= 4 ) {

Serial.println("Perbanyak menghibur diri");

}

if (( bpm > 100 ) && ( celsius > 37.5 ) && ( voltgsr > 4 )) {

Serial.println("Terdeteksi STRESS");

Serial.println("hibur diri dan konsul ke psikiater");

}

kirimbt();

}

j. VIDEO HASILNYA

Membuat Alat Pengukur Jarak Benda dan Pengukur Kecepatan Gerakan Benda sensor HC-SRF04 dan HB100 ARDUINO

Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang menggunakan Arduino untuk mengukur jarak benda dan kecepatan gerakan benda, alat ini menggunakan dua buah sensor yaitu HC-SRF04 dan HB100. alat ini dilengkapi dengan LCD untuk penampilnya atau interface. untuk aplikasi dari alat ini sangatlah banyak salah satunya untuk mengukur kecepatan mobil dan sensor jarak saat mundur parkir. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Arduino Mega

b. Sensor Jarak HC-SRF04

c. Sensor HB100

d. LCD + I2C

e. Program Arduino IDE

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "FreqMeasure.h"
LiquidCrystal_I2C lcd(0x3F, 16, 2);

#define trigPin 2
#define echoPin 3

void setup()
{
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
lcd.begin();
lcd.clear();
Serial.begin(9600);
lcd.print("Dist:");
lcd.setCursor(10,0);
lcd.print("Speed:");
FreqMeasure.begin();
}

double sum=0;
int count=0;

void loop(){

    long duration, distance;
digitalWrite(trigPin, LOW); // Added this line
delayMicroseconds(2); // Added this line
digitalWrite(trigPin, HIGH);
// delayMicroseconds(1000); - Removed this line
delayMicroseconds(10); // Added this line
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;


if (FreqMeasure.available()) {
    // average 30 readings together
    sum = sum + FreqMeasure.read();
    count = count + 1;
    if (count > 30) {
      float frequency = FreqMeasure.countToFrequency(sum / count);
      float spd = frequency / 19.49; //conversion from frequency to kilometers per hour (sorry, imperial guys :)
      //to improve speed, we update only the bottom row of the LCD

if(spd > 2.5){
spd = 0;
}
      lcd.setCursor(0, 1);
      lcd.print("                ");
      lcd.setCursor(0, 1);
      lcd.print(distance);
      lcd.print("cm");
      //lcd.print("       ");
      lcd.setCursor(8,1);
      lcd.print(spd);
      lcd.print("km/h");

//      Serial.println(distance);
//      Serial.println(spd);

      sum = 0;
      count = 0;
    }
}
}

f. VIDEO HASILNYA

Membuat Alat Monitoring Polusi Udara via Internet Webserver Arduino (IOT)

Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang dapat memonitor polusi udara menggunakan Arduino sebagai kontrollernya serta internet sebagai media pengiriman datanya (IOT). alat ini terdiri dari beberapa bagian yaitu bagian sensor, bagian pengolah data dan bagian pengiriman data, untuk interface menggunakan server dari www.idhostinger.com. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Arduino Uno + Ethernet Shield

b. Sensor Gas Polutan

c. Router + Modem USB

d. Program Arduino IDE

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <SPI.h>
#include <Ethernet.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

String txData2="";

byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
char server[] = "www.monitoring-udara.hol.es";
IPAddress ip(192,168,0,99);

EthernetClient client;

void setup()
{
lcd.begin();
Serial.begin(9600);
while (!Serial) {
    ;
}

if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    Ethernet.begin(mac, ip);
}

    delay(1000);
    Serial.println("connecting...");
    kirim ();
}

void loop()
{
kirim ();
}

void kirim()
{

   int voltage0 = analogRead(A0); //mq135
   int voltage1 = analogRead(A1); //mq9
   int voltage2 = analogRead(A2); //gasamonia
   int voltage3 = analogRead(A3); //gasco2

EthernetClient client;

if (client.connect(server, 80)){
    txData2 = "voltage0="+ (String (voltage0)) + "&voltage1="+ (String (voltage1)) + "&voltage2="+ (String (voltage2)) + "&voltage3="+ (String (voltage3));
    Serial.println("connected");
    Serial.print(txData2);
    client.println("POST /updatex.php HTTP/1.1");
    client.println("Host: www.monitoring-udara.hol.es");
    client.println("Connection: close");
    client.print("Content-Type: application/x-www-form-urlencoded\n");
    client.print("Content-Length: ");
    client.print(txData2.length());
    client.print("\n\n");
    client.print(txData2);
    Serial.println(txData2);
    delay (1000);

}
else{
    Serial.println("Connection Failed.");
    Serial.println();
    delay (1500);
}


lcd.setCursor(0,0);
lcd.print("1=");
lcd.print(voltage0);
lcd.print(" ");

lcd.setCursor(0,1);
lcd.print("2=");
lcd.print(voltage1);
lcd.print(" ");

lcd.setCursor(7,0);
lcd.print("3=");
lcd.print(voltage2);
lcd.print("    ");

lcd.setCursor(7,1);
lcd.print("4=");
lcd.print(voltage3);
lcd.print("    ");

delay(5000);

}

e. updatex.php

<?php
require("configx.php");

$query = "UPDATE tbudara SET voltage0='$_POST[voltage0]', voltage1='$_POST[voltage1]', voltage2='$_POST[voltage2]', voltage3='$_POST[voltage3]' WHERE no=1";

if(!@mysql_query($query))
{
    echo "&Answer; SQL Error - ".mysql_error();
    return;
}
?>

f. index.php

<html>
<head>
<meta http-equiv="refresh" content="3">
<style>
.bordered { border-style:solid; }
</style>
<link rel="stylesheet" type="text/css" href="latweb.css" />
<title >AIR QUALITY CONTROL</title>
</head>

<center>
<p><h2>AIR QUALITY CONTROL</h2></p>

<script type='text/javascript'>

</script>

<br>

<script type="text/javascript">

</script>

</center>

<body>

<CENTER>

<br>
<input type="button" onclick="location.href='http://monitoring-udara.hol.es/dbshow.php';" value="Lihat Database" />
<br><br>
</CENTER>

<CENTER>
<p><h3>
Konsentrasi GAS CO2 =
<?php
include "configx.php";
$tampil = @mysql_query("SELECT * FROM tbudara WHERE no IN (SELECT MAX(no) FROM tbudara)");

    while ($r=mysql_fetch_array($tampil)){
       echo $r[voltage0];
   }
?>
<br>
Konsentrasi GAS SnO2 =
<?php
include "configx.php";
$tampil = @mysql_query("SELECT * FROM tbudara WHERE no IN (SELECT MAX(no) FROM tbudara)");

    while ($r=mysql_fetch_array($tampil)){
       echo "$r[voltage1]";
   }
?>

<br>
Konsentrasi GAS NH3 =
<?php
include "configx.php";
$tampil = @mysql_query("SELECT * FROM tbudara WHERE no IN (SELECT MAX(no) FROM tbudara)");

    while ($r=mysql_fetch_array($tampil)){
       echo "$r[voltage2]";
   }
?>

<br>
Konsentrasi GAS CO =
<?php
include "configx.php";
$tampil = @mysql_query("SELECT * FROM tbudara WHERE no IN (SELECT MAX(no) FROM tbudara)");

    while ($r=mysql_fetch_array($tampil)){
       echo "$r[voltage3]";
   }
?>

</CENTER>
<br><br><br>

</body>

</html>

g. dbshow.php

<html>
<head>
<meta http-equiv="refresh" content="3">
<style>
.bordered { border-style:solid; }
</style>
<title >DATABASE</title>
</head>
<body bgcolor = #ffffff>

<CENTER>
<p><h2>AIR QUALITY CONTROL DATABASE</h2></p>

<center>
<script type='text/javascript'>

</script>

<br>

<script type="text/javascript">

</script>

</center>

<br>
<input type="button" onclick="location.href='http://monitoring-udara.hol.es/index.php';" value=" HOME " />
<br>
<input type="button" onclick="location.href='http://monitoring-udara.hol.es/downloadExcel.php';" value=" Download Data" />
<br>

<?php
include "configx.php";

//$id=mysql_fetch_array(mysql_query("SELECT * FROM tbudara ORDER BY no desc LIMIT 1 "))[no];

//mysql_query("UPDATE `u761553243_udara`.`tbudara` SET `waktu` = (SELECT CONVERT_TZ(CURRENT_TIMESTAMP,'+00:00','+07:00')) WHERE `tbudara`.`no` =$id;");

$tampil = mysql_query("SELECT * FROM tbudara ORDER BY `tbudara`.`no` DESC");

echo "<table border = '0'>
          <tr><th bgcolor = #F0F011>GAS CO2</th><th bgcolor = #F0F011>GAS SnO2</th><th bgcolor = #F0F011>GAS NH3</th><th bgcolor = #F0F011>GAS CO</th></tr>";

    while ($r=mysql_fetch_array($tampil)){
       echo "<tr>
             <td bgcolor = #FFC848>$r[voltage0]</td>
            <td bgcolor = #FFC848>$r[voltage1]</td>
            <td bgcolor = #FFC848>$r[voltage2]</td>
             <td bgcolor = #FFC848>$r[voltage3]</td></tr>";
    }
    echo "</table>";

@mysql_close($con);

?>

</CENTER>

</body>
</html>

h. configx.php

<?php

$dbhost = 'mysql.idhostinger.com';
$dbuser = 'u76xxxx_local';
$dbpass = '19986876';
$dbname = 'u76xxx_udara';

$conn = @mysql_connect($dbhost,$dbuser,$dbpass) or die ('Error connecting to mysql');
mysql_select_db($dbname);
if(!$conn){
        echo "database gak konek";
    }else{

    }
?>

i. VIDEO HASILNYA

Membuat Alat Monitor Gas Secara Wireless Modul HC-12 Logger Komputer ARDUINO

Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang bisa digunakan untuk monitor gas secara wireless, jadi alat ini memang difungsikan untuk memonitor gas pada suatu udara kemudian akan mengirimkan datanya ke server yang berada cukup jauh dari alat, kemudian terdapat data logger menggunakan software VB pada komputer untuk recod data gas. untuk lebih jelasnya berikut adalah skema dan programnya.

a. Arduino Uno

b. Sensor Gas

c. Modul Wireless HC-12

d. Program Arduino Transmitter

#include <SoftwareSerial.h>

SoftwareSerial HC12(10, 11); // HC-12 TX Pin, HC-12 RX Pin

void setup() {
Serial.begin(9600);             // Serial port to computer
HC12.begin(9600);               // Serial port to HC12

}

void loop() {

int dataadc = analogRead(A0);
int ppm = 1.953125*dataadc;

    HC12.write(ppm);      // Send that data to HC-12
delay(1000);

}

e. Program Arduino Receiver

#include <SoftwareSerial.h>

SoftwareSerial HC12(10, 11); // HC-12 TX Pin, HC-12 RX Pin

void setup() {
Serial.begin(9600);             // Serial port to computer
HC12.begin(9600);               // Serial port to HC12

}

void loop() {
while (HC12.available()) {        // If HC-12 has data
    Serial.println(HC12.read());      // Send the data to Serial monitor
}

}

f. Cara Penggunaan Alat

Pertama hubungkan modul wireless HC-12 ke arduino transmitter dan receiver, kemudian pasangkan sensor gas di bagian arduino transmitter pada pin ADC. setelah itu hubungkan arduino receiver ke komputer dan aktifkan serial monitor, maka data PPM gas akan tampil pada serial monitor secara realtime dan data tersebut adalah data hasil kiriman dari arduino transmiter.

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