Membuat Alat Kendali Relay dengan Timer Countdown (ON OFF Relay berdasarkan waktu yang diset)

Membuat Alat Kendali Relay dengan Timer Countdown (ON OFF Relay berdasarkan waktu yang diset)

        Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang dapat mengendalikan relay berdasarkan input waktu yang kita tentukan sendiri atau setting time, jadi alat ini hanya ON / OFF relay seperti biasa namun relay akan ON sesuai dengan input waktu yang kita inginkan dalam satuan detik, jadi setelah waktu ON relay melebihi dari setting time yang kita tentukan maka relay akan OFF secara otomatis. untuk lebih jelasnya berikut adalah skema dan programnya. 

a. Arduino Uno

b. Relay 5v

c. LCD 20x4 + I2C

d. Program Arduino IDE

#include <Wire.h>

#include <LiquidCrystal_I2C.h>  //i2C LCD Library

LiquidCrystal_I2C lcd(0x3F, 20, 4); //library i2c lcd

int btok = 8;

int btup = 10;

int btdown = 9;

int btset = 13;

int mode = 1;

int passwd;

int btokx = 0;

int btupx = 0;

int btdownx = 0;

int btsetx = 0;

int relay1 = 3;

int relay2 = 4;

int relay3 = 5;

int relay4 = 6;

int relay5 = 7;

int relay6 = 2;

int x1;

int x2;

int x3;

int x4;

int x5;

int x6;

int x7;

int x8;

int x9;

int x10;

int x11;

int x12;

int x13;

int x14;

int x15;

int x16;

int x17;

int x18;

int x19;

int x20;

int x21;

int x22;

int x23;

int x24;

int relay1p = 1;

int relay2p = 0;

int relay3p = A3;

int relay4p = A2;

int relay5p = A1;

int relay6p = A0;

int relay1px = 0;

int relay2px = 0;

int relay3px = 0;

int relay4px = 0;

int relay5px = 0;

int relay6px = 0;

int timer1;

int timer2;

int timer3;

int timer4;

int timer5;

int timer6;

int timer7;

int timer8;

int timer9;

int timer10;

int timer11;

int timer12;

int timer13;

int timer14;

int timer15;

int timer16;

int timer17;

int timer18;

int timer19;

int timer20;

int timer21;

int timer22;

int timer23;

int timer24;

int timer1x;

int timer2x;

int timer3x;

int timer4x;

int timer5x;

int timer6x;

int timer7x;

int timer8x;

int timer9x;

int timer10x;

int timer11x;

int timer12x;

int timer13x;

int timer14x;

int timer15x;

int timer16x;

int timer17x;

int timer18x;

int timer19x;

int timer20x;

int timer21x;

int timer22x;

int timer23x;

int timer24x;

void setup() {

  lcd.begin(); 

  lcd.noCursor(); 

  lcd.clear(); 

pinMode(btok,INPUT_PULLUP);

pinMode(btup,INPUT_PULLUP);

pinMode(btdown,INPUT_PULLUP);

pinMode(btset,INPUT_PULLUP);

pinMode(relay1p,INPUT_PULLUP);

pinMode(relay2p,INPUT_PULLUP);

pinMode(relay3p,INPUT_PULLUP);

pinMode(relay4p,INPUT_PULLUP);

pinMode(relay5p,INPUT_PULLUP);

pinMode(relay6p,INPUT_PULLUP);

pinMode(relay1,OUTPUT);

pinMode(relay2,OUTPUT);

pinMode(relay3,OUTPUT);

pinMode(relay4,OUTPUT);

pinMode(relay5,OUTPUT);

pinMode(relay6,OUTPUT);

}

void loop() {

lcd.setCursor(0,0); 

lcd.print("MENU PILIHAN");

lcd.setCursor(0,1); 

lcd.print("1.START");

lcd.setCursor(0,2); 

lcd.print("2.SETTING");

btsetx = digitalRead(btset);

btokx = digitalRead(btok);

x1 = 0;

x2 = 0;

x3 = 0;

x4 = 0;

x5 = 0;

x6 = 0;

x7 = 0;

x8 = 0;

x9 = 0;

x10 = 0;

x11 = 0;

x12 = 0;

x13 = 0;

x14 = 0;

x15 = 0;

x16 = 0;

x17 = 0;

x18 = 0;

x19 = 0;

x20 = 0;

x21 = 0;

x22 = 0;

x23 = 0;

x24 = 0;

timer1 = timer1x;

timer2 = timer2x;

timer3 = timer3x;

timer4 = timer4x;

timer5 = timer5x;

timer6 = timer6x;

timer7 = timer7x;

timer8 = timer8x;

timer9 = timer9x;

timer10 = timer10x;

timer11 = timer11x;

timer12 = timer12x;

timer13 = timer13x;

timer14 = timer14x;

timer15 = timer15x;

timer16 = timer16x;

timer17 = timer17x;

timer18 = timer18x;

timer19 = timer19x;

timer20 = timer20x;

timer21 = timer21x;

timer22 = timer22x;

timer23 = timer23x;

timer24 = timer24x;

if(btokx == 0){

lcd.clear();

delay(1000);

mulai();

counter();

btsetx = 1;

}

if(btsetx == 0){

delay(200);

lcd.clear();

passwd = 0;

password();

lcd.clear();

delay(1000);

satu();

lcd.clear();

delay(1000);

dua();

lcd.clear();

delay(1000);

tiga();

lcd.clear();

delay(1000);

empat();

lcd.clear();

delay(1000);

lima();

lcd.clear();

delay(1000);

enam();

lcd.clear();

delay(1000);

tujuh();

lcd.clear();

delay(1000);

delapan();

lcd.clear();

delay(1000);

sembilan();

lcd.clear();

delay(1000);

sepuluh();

lcd.clear();

delay(1000);

sebelas();

lcd.clear();

delay(1000);

duabelas();

lcd.clear();

delay(1000);

tigabelas();

lcd.clear();

delay(1000);

empatbelas();

lcd.clear();

delay(1000);

limabelas();

lcd.clear();

delay(1000);

enambelas();

lcd.clear();

delay(1000);

tujuhbelas();

lcd.clear();

delay(1000);

delapanbelas();

lcd.clear();

delay(1000);

sembilanbelas();

lcd.clear();

delay(1000);

duapuluh();

lcd.clear();

delay(1000);

duapuluhsatu();

lcd.clear();

delay(1000);

duapuluhdua();

lcd.clear();

delay(1000);

duapuluhtiga();

lcd.clear();

delay(1000);

duapuluhempat();

lcd.clear();

}

}

void counter(){

lcd.setCursor(10,3); 

lcd.print("  CUCIAN="); 

lcd.print(mode); 

btdownx = digitalRead(btdown);

if(btdownx == 0){

lcd.clear();

delay(1000);

return;

}

relay1px = digitalRead(relay1p);

relay2px = digitalRead(relay2p);

relay3px = digitalRead(relay3p);

relay4px = digitalRead(relay4p);

relay5px = digitalRead(relay5p);

relay6px = digitalRead(relay6p);

if((relay1px == 0)&&(mode == 1)&&(timer1 > 0)&&(x1 == 0)){

 x1 = 1;

digitalWrite(relay1,HIGH);

}

if(x1 == 1){

lcd.setCursor(0,0); 

lcd.print(timer1); 

lcd.print("          "); 

timer1--;

if(timer1 <= 0){

timer1 = 0;

digitalWrite(relay1,LOW);

}

}

if((relay2px == 0)&&(mode == 1)&&(timer2 > 0)&&(x2 == 0)){

x2 = 1;

digitalWrite(relay2,HIGH);

}

if(x2 == 1){

lcd.setCursor(0,1); 

lcd.print(timer2); 

lcd.print("          "); 

timer2--;

if(timer2 <= 0){

timer2 = 0;

digitalWrite(relay2,LOW);

}

}

if((relay3px == 0)&&(mode == 1)&&(timer3 > 0)&&(x3 == 0)){

x3 = 1;

digitalWrite(relay3,HIGH);

}

if(x3 == 1){

lcd.setCursor(0,2); 

lcd.print(timer3); 

lcd.print("          ");

timer3--;

if(timer3 <= 0){

timer3 = 0;

digitalWrite(relay3,LOW);

}

}

if((relay4px == 0)&&(mode == 1)&&(timer4 > 0)&&(x4 == 0)){

x4 = 1;

digitalWrite(relay4,HIGH);

}

if(x4 == 1){

lcd.setCursor(0,3); 

lcd.print(timer4); 

lcd.print("          ");

timer4--;

if(timer4 <= 0){

timer4 = 0;

digitalWrite(relay4,LOW);

}

}

if((relay5px == 0)&&(mode == 1)&&(timer5 > 0)&&(x5 == 0)){

x5 = 1;

digitalWrite(relay5,HIGH);

}

if(x5 == 1){

lcd.setCursor(10,0); 

lcd.print(timer5); 

lcd.print("          ");

timer5--;

if(timer5 <= 0){

timer5 = 0;

digitalWrite(relay5,LOW);

}

}

if((relay6px == 0)&&(mode == 1)&&(timer6 > 0)&&(x6 == 0)){

x6 = 1;

digitalWrite(relay6,HIGH);

}

if(x6 == 1){

lcd.setCursor(10,1); 

lcd.print(timer6); 

lcd.print("          ");

timer6--;

if(timer6 <= 0){

timer6 = 0;

digitalWrite(relay6,LOW);

}

}

//============================================================

if((relay1px == 0)&&(mode == 2)&&(timer7 > 0)&&(x7 == 0 )){

x7 = 1;

digitalWrite(relay1,HIGH);

}

if(x7 == 1){

lcd.setCursor(0,0); 

lcd.print(timer7); 

lcd.print("          ");

timer7--;

if(timer7 <= 0){

timer7 = 0;

digitalWrite(relay1,LOW);

}

}

if((relay2px == 0)&&(mode == 2)&&(timer8 > 0)&&(x8 == 0)){

x8 = 1;

digitalWrite(relay2,HIGH);

}

if(x8 == 1){

lcd.setCursor(0,1); 

lcd.print(timer8); 

lcd.print("          ");

timer8--;

if(timer8 <= 0){

timer8 = 0;

digitalWrite(relay2,LOW);

}

}

if((relay3px == 0)&&(mode == 2)&&(timer9 > 0)&&(x9 == 0)){

x9 = 1;

digitalWrite(relay3,HIGH);

}

if(x9 == 1){

lcd.setCursor(0,2); 

lcd.print(timer9); 

lcd.print("          ");

timer9--;

if(timer9 <= 0){

timer9 = 0;

digitalWrite(relay3,LOW);

}

}

if((relay4px == 0)&&(mode == 2)&&(timer10 > 0)&&(x10 == 0)){

x10 = 1;

digitalWrite(relay4,HIGH);

}

if(x10 == 1){

lcd.setCursor(0,3); 

lcd.print(timer10); 

lcd.print("          ");

timer10--;

if(timer10 <= 0){

timer10 = 0;

digitalWrite(relay4,LOW);

}

}

if((relay5px == 0)&&(mode == 2)&&(timer11 > 0)&&(x11 == 0)){

x11 = 1;

digitalWrite(relay5,HIGH);

}

if(x11 == 1){

lcd.setCursor(10,0); 

lcd.print(timer11); 

lcd.print("          ");

timer11--;

if(timer11 <= 0){

timer11 = 0;

digitalWrite(relay5,LOW);

}

}

if((relay6px == 0)&&(mode == 2)&&(timer12 > 0)&&(x12 == 0)){

x12 = 1;

digitalWrite(relay6,HIGH);

}

if(x12 == 1){

lcd.setCursor(10,1); 

lcd.print(timer12); 

lcd.print("          ");

timer12--;

if(timer12 <= 0){

timer12 = 0;

digitalWrite(relay6,LOW);

}

}

//====================================================================

if((relay1px == 0)&&(mode == 3)&&(timer13 > 0)&&(x13 == 0)){

x13 = 1;

digitalWrite(relay1,HIGH);

}

if(x13 == 1){

lcd.setCursor(0,0); 

lcd.print(timer13); 

lcd.print("          ");  

timer13--;

if(timer13 <= 0){

timer13 = 0;

digitalWrite(relay1,LOW);

}

}

if((relay2px == 0)&&(mode == 3)&&(timer14 > 0)&&(x14 == 0)){

x14 = 1;

digitalWrite(relay2,HIGH);

}

if(x14 == 1){

lcd.setCursor(0,1); 

lcd.print(timer14); 

lcd.print("          "); 

timer14--;

if(timer14 <= 0){

timer14 = 0;

digitalWrite(relay2,LOW);

}

}

if((relay3px == 0)&&(mode == 3)&&(timer15 > 0)&&(x15 == 0)){

x15 = 1;

digitalWrite(relay3,HIGH);

}

if(x15 == 1){

lcd.setCursor(0,2); 

lcd.print(timer15); 

lcd.print("          ");

timer15--;

if(timer15 <= 0){

timer15 = 0;

digitalWrite(relay3,LOW);

}

}

if((relay4px == 0)&&(mode == 3)&&(timer16 > 0)&&(x16 == 0)){

x16 = 1;

digitalWrite(relay4,HIGH);

}

if(x16 == 1){

lcd.setCursor(0,3); 

lcd.print(timer16); 

lcd.print("          ");

timer16--;

if(timer16 <= 0){

timer16 = 0;

digitalWrite(relay4,LOW);

}

}

if((relay5px == 0)&&(mode == 3)&&(timer17 > 0)&&(x17 == 0)){

x17 = 1;

digitalWrite(relay5,HIGH);

}

if(x17 == 1){

lcd.setCursor(10,0); 

lcd.print(timer17); 

lcd.print("          ");

timer17--;

if(timer17 <= 0){

timer17 = 0;

digitalWrite(relay5,LOW);

}

}

if((relay6px == 0)&&(mode == 3)&&(timer18 > 0)&&(x18 == 0)){

x18 = 1;

digitalWrite(relay6,HIGH);

}

if(x18 == 1){

lcd.setCursor(10,1); 

lcd.print(timer18); 

lcd.print("          ");

timer18--;

if(timer18 <= 0){

timer18 = 0;

digitalWrite(relay6,LOW);

}

}

//==================================================================

if((relay1px == 0)&&(mode == 4)&&(timer19 > 0)&&(x19 == 0)){

x19 = 1; 

digitalWrite(relay1,HIGH);

}

if(x19 == 1){

lcd.setCursor(0,0); 

lcd.print(timer19); 

lcd.print("          ");

timer19--;

if(timer19 <= 0){

timer19 = 0;

digitalWrite(relay1,LOW);

}

}

if((relay2px == 0)&&(mode == 4)&&(timer20 > 0)&&(x20 == 0)){

x20 = 1;

digitalWrite(relay2,HIGH);

}

if(x20 == 1){

lcd.setCursor(0,1); 

lcd.print(timer20); 

lcd.print("          ");

timer20--;

if(timer20 <= 0){

timer20 = 0;

digitalWrite(relay2,LOW);

}

}

if((relay3px == 0)&&(mode == 4)&&(timer21 > 0)&&(x21 == 0)){

x21 = 1;

digitalWrite(relay3,HIGH);

}

if(x21 == 1){

lcd.setCursor(0,2); 

lcd.print(timer21); 

lcd.print("          ");

timer21--;

if(timer21 <= 0){

timer21 = 0;

digitalWrite(relay3,LOW);

}

}

if((relay4px == 0)&&(mode == 4)&&(timer22 > 0)&&(x22 == 0)){

x22 = 1;

digitalWrite(relay4,HIGH);

}

if(x22 == 1){

lcd.setCursor(0,3); 

lcd.print(timer22); 

lcd.print("          ");

timer22--;

if(timer22 <= 0){

timer22 = 0;

digitalWrite(relay4,LOW);

}

}

if((relay5px == 0)&&(mode == 4)&&(timer23 > 0)&&(x23 == 0)){

x23 = 1;

digitalWrite(relay5,HIGH);

}

if(x23 == 1){

lcd.setCursor(10,0); 

lcd.print(timer23); 

lcd.print("          ");

timer23--;

if(timer23 <= 0){

timer23 = 0;

digitalWrite(relay5,LOW);

}

}

if((relay6px == 0)&&(mode == 4)&&(timer24 > 0)&&(x24 == 0)){

x24 = 1;

digitalWrite(relay6,HIGH);

}

if(x24 == 1){

lcd.setCursor(10,1); 

lcd.print(timer24); 

lcd.print("          ");

timer24--;

if(timer24 <= 0){

timer24 = 0;

digitalWrite(relay6,LOW);

}

}

delay(1000);  

counter();

}

void mulai(){

  

  btsetx = digitalRead(btset);

  

  if(btsetx == 0){

  lcd.clear();

  delay(1000);  

  return;

  }

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

lcd.setCursor(0,0); 

lcd.print("CUCIAN=");

lcd.print(mode);

if(btupx == 0){

  delay(200);

mode++;

}

if(btdownx == 0){

  delay(200);

mode--;

}

if(mode < 1){

mode = 1;

}

if(mode > 4){

mode = 4;

}

if(mode == 1){

lcd.setCursor(0,1); 

lcd.print(timer1);

lcd.print(" ");

lcd.print(timer2);

lcd.print(" ");

lcd.print(timer3);

lcd.print(" ");

lcd.print(timer4);

lcd.print(" ");

lcd.print(timer5);

lcd.print(" ");

lcd.print(timer6);

lcd.print("           ");

}

if(mode == 2){

lcd.setCursor(0,1); 

lcd.print(timer7);

lcd.print(" ");

lcd.print(timer8);

lcd.print(" ");

lcd.print(timer9);

lcd.print(" ");

lcd.print(timer10);

lcd.print(" ");

lcd.print(timer11);

lcd.print(" ");

lcd.print(timer12);

lcd.print("           ");

}

if(mode == 3){

lcd.setCursor(0,1); 

lcd.print(timer13);

lcd.print(" ");

lcd.print(timer14);

lcd.print(" ");

lcd.print(timer15);

lcd.print(" ");

lcd.print(timer16);

lcd.print(" ");

lcd.print(timer17);

lcd.print(" ");

lcd.print(timer18);

lcd.print("           ");

}

if(mode == 4){

lcd.setCursor(0,1); 

lcd.print(timer19);

lcd.print(" ");

lcd.print(timer20);

lcd.print(" ");

lcd.print(timer21);

lcd.print(" ");

lcd.print(timer22);

lcd.print(" ");

lcd.print(timer23);

lcd.print(" ");

lcd.print(timer24);

lcd.print("           ");

} 

mulai();

}

void satu(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 1/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer1);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer1++;

}

if(btdownx == 0){

delay(200);

timer1--;

}

if(timer1 < 0){

timer1 = 0;

}

if(btokx == 0){

delay(200);

timer1x = timer1;

return;

}

satu();

}

void dua(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 2/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer2);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer2++;

}

if(btdownx == 0){

delay(200);

timer2--;

}

if(timer2 < 0){

timer2 = 0;

}

if(btokx == 0){

delay(200);

timer2x = timer2;

return;

}

dua();

}

void tiga(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 3/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer3);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer3++;

}

if(btdownx == 0){

delay(200);

timer3--;

}

if(timer3 < 0){

timer3 = 0;

}

if(btokx == 0){

delay(200);

timer3x = timer3;

return;

}

tiga();

}

void empat(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 4/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer4);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer4++;

}

if(btdownx == 0){

delay(200);

timer4--;

}

if(timer4 < 0){

timer4 = 0;

}

if(btokx == 0){

delay(200);

timer4x = timer4;

return;

}

empat();

}

void lima(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 5/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer5);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer5++;

}

if(btdownx == 0){

delay(200);

timer5--;

}

if(timer5 < 0){

timer5 = 0;

}

if(btokx == 0){

delay(200);

timer5x = timer5;

return;

}

lima();

}

void enam(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 6/1");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer6);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer6++;

}

if(btdownx == 0){

delay(200);

timer6--;

}

if(timer6 < 0){

timer6 = 0;

}

if(btokx == 0){

delay(200);

timer6x = timer6;

return;

}

enam();

}

//================================================================================

void tujuh(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 1/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer7);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer7++;

}

if(btdownx == 0){

delay(200);

timer7--;

}

if(timer7 < 0){

timer7 = 0;

}

if(btokx == 0){

delay(200);

timer7x = timer7;

return;

}

tujuh();

}

void delapan(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 2/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer8);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer8++;

}

if(btdownx == 0){

delay(200);

timer8--;

}

if(timer8 < 0){

timer8 = 0;

}

if(btokx == 0){

delay(200);

timer8x = timer8;

return;

}

delapan();

}

void sembilan(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 3/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer9);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer9++;

}

if(btdownx == 0){

delay(200);

timer9--;

}

if(timer9 < 0){

timer9 = 0;

}

if(btokx == 0){

delay(200);

timer9x = timer9;

return;

}

sembilan();

}

void sepuluh(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 4/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer10);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer10++;

}

if(btdownx == 0){

delay(200);

timer10--;

}

if(timer10 < 0){

timer10 = 0;

}

if(btokx == 0){

delay(200);

timer10x = timer10;

return;

}

sepuluh();

}

void sebelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 5/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer11);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer11++;

}

if(btdownx == 0){

delay(200);

timer11--;

}

if(timer11 < 0){

timer11 = 0;

}

if(btokx == 0){

delay(200);

timer11x = timer11;

return;

}

sebelas();

}

void duabelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 6/2");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer12);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer12++;

}

if(btdownx == 0){

delay(200);

timer12--;

}

if(timer12 < 0){

timer12 = 0;

}

if(btokx == 0){

delay(200);

timer12x = timer12;

return;

}

duabelas();

}

//===========================================================================

void tigabelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 1/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer13);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer13++;

}

if(btdownx == 0){

delay(200);

timer13--;

}

if(timer13 < 0){

timer13 = 0;

}

if(btokx == 0){

delay(200);

timer13x = timer13;

return;

}

tigabelas();

}

void empatbelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 2/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer14);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer14++;

}

if(btdownx == 0){

delay(200);

timer14--;

}

if(timer14 < 0){

timer14 = 0;

}

if(btokx == 0){

delay(200);

timer14x = timer14;

return;

}

empatbelas();

}

void limabelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 3/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer15);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer15++;

}

if(btdownx == 0){

delay(200);

timer15--;

}

if(timer15 < 0){

timer15 = 0;

}

if(btokx == 0){

delay(200);

timer15x = timer15;

return;

}

limabelas();

}

void enambelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 4/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer16);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer16++;

}

if(btdownx == 0){

delay(200);

timer16--;

}

if(timer16 < 0){

timer16 = 0;

}

if(btokx == 0){

delay(200);

timer16x = timer16;

return;

}

enambelas();

}

void tujuhbelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 5/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer17);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer17++;

}

if(btdownx == 0){

delay(200);

timer17--;

}

if(timer17 < 0){

timer17 = 0;

}

if(btokx == 0){

delay(200);

timer17x = timer17;

return;

}

tujuhbelas();

}

void delapanbelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 6/3");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer18);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer18++;

}

if(btdownx == 0){

delay(200);

timer18--;

}

if(timer18 < 0){

timer18 = 0;

}

if(btokx == 0){

delay(200);

timer18x = timer18;

return;

}

delapanbelas();

}

//===========================================================================

void sembilanbelas(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 1/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer19);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer19++;

}

if(btdownx == 0){

delay(200);

timer19--;

}

if(timer19 < 0){

timer19 = 0;

}

if(btokx == 0){

delay(200);

timer19x = timer19;

return;

}

sembilanbelas();

}

void duapuluh(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 2/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer20);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer20++;

}

if(btdownx == 0){

delay(200);

timer20--;

}

if(timer20 < 0){

timer20 = 0;

}

if(btokx == 0){

delay(200);

timer20x = timer20;

return;

}

duapuluh();

}

void duapuluhsatu(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 3/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer21);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer21++;

}

if(btdownx == 0){

delay(200);

timer21--;

}

if(timer21 < 0){

timer21 = 0;

}

if(btokx == 0){

delay(200);

timer21x = timer21;

return;

}

duapuluhsatu();

}

void duapuluhdua(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 4/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer22);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer22++;

}

if(btdownx == 0){

delay(200);

timer22--;

}

if(timer22 < 0){

timer22 = 0;

}

if(btokx == 0){

delay(200);

timer22x = timer22;

return;

}

duapuluhdua();

}

void duapuluhtiga(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 5/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer23);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer23++;

}

if(btdownx == 0){

delay(200);

timer23--;

}

if(timer23 < 0){

timer23 = 0;

}

if(btokx == 0){

delay(200);

timer23x = timer23;

return;

}

duapuluhtiga();

}

void duapuluhempat(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("SET TIMER RELAY 6/4");

lcd.setCursor(0,1); 

lcd.print("Detik: ");

lcd.print(timer24);

lcd.print("        ");

if(btupx == 0){

delay(200);

timer24++;

}

if(btdownx == 0){

delay(200);

timer24--;

}

if(timer24 < 0){

timer24 = 0;

}

if(btokx == 0){

delay(200);

timer24x = timer24;

return;

}

duapuluhempat();

}

//===========================================================================

void password(){

btsetx = digitalRead(btset);

btupx = digitalRead(btup);

btdownx = digitalRead(btdown);

btokx = digitalRead(btok);

lcd.setCursor(0,0); 

lcd.print("PASSWORD= "); 

lcd.print(passwd);

lcd.print("        ");

if(btupx == 0){

delay(200);

passwd++;

}

if(btdownx == 0){

delay(200);

passwd--;

}

if(passwd < 0){

passwd = 0;

}

if((btokx == 0)&&(passwd == 125)){

delay(200);

return;

}

password();

}

e. VIDEO HASILNYA

Membuat Alat Monitor Gas Polutan Udara dan Debu Serta Suhu - Kelembaban Menggunakan DHT22 sensor MQ135 MQ7 dan data logger SDcard dilengkapi RTC ds3231

Membuat Alat Monitor Gas Polutan Udara dan Debu Serta Suhu - Kelembaban Menggunakan DHT22 sensor MQ135 MQ7 dan data logger SDcard dilengkapi RTC ds3231

         Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang dapat memonitoring gas polutan menggunakan sensor MQ135 dan MQ7 kemudian debu dan suhu - kelembaban, alat ini dilengkapi dengan data logger berupa sd card dan juga ada tampilan waktu, untuk tampilan waktu menggunakan modul RTC ds3231 dan juga waktu dan tanggal disimpan ke dalam sd card. untuk mengetahui program dan skemanya yaitu seperti berikut.  

a. Arduino Uno

b. Sensor Gas Mq135 dan MQ7

c. Sensor Debu

d. Sensor suhu dan kelembaban DHT22

e. Data Logger SD Card

f. Modul RTC ds3231

g. 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 <LiquidCrystal_I2C.h>  //i2C LCD Library

LiquidCrystal_I2C lcd(0x27, 20, 4); //library i2c lcd

#include "DHT.h"

#define DS3231_I2C_ADDRESS 0x68

#include "MQ135.h"

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

#define RZERO 206.85    //  Define RZERO Calibration Value

MQ135 gasSensor = MQ135(ANALOGPIN);

#define DHTPIN 7    

#define DHTTYPE DHT22   

DHT dht(DHTPIN, DHTTYPE);

  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;

int suhu;

int hum;

float Dustval;

float ppm;

float ppm2;

byte second;

byte minute;

byte hour;

byte dayOfWeek; 

byte dayOfMonth; 

byte month; 

byte year;

byte decToBcd(byte val)

{

  return( (val/10*16) + (val%10) );

}

// Convert binary coded decimal to normal decimal numbers

byte bcdToDec(byte val)

{

  return( (val/16*10) + (val%16) );

}

void setup(){

  Wire.begin();

  lcd.begin(); //set lcd i2c

  lcd.noCursor(); //biar gak ada cursor di lcd

  lcd.clear(); //clear lcd

  dht.begin();

  Serial.begin(9600);

 pinMode(ledx,OUTPUT);

   // set the initial time here:

  // DS3231 seconds, minutes, hours, day, date, month, year

  // setDS3231time(0,45,22,4,9,5,18);

  float rzero = gasSensor.getRZero();

  delay(3000);

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

  Serial.println(rzero);

    

}

void setDS3231time()

{

  // sets time and date data to DS3231

  Wire.beginTransmission(DS3231_I2C_ADDRESS);

  Wire.write(0); // set next input to start at the seconds register

  Wire.write(decToBcd(second)); // set seconds

  Wire.write(decToBcd(minute)); // set minutes

  Wire.write(decToBcd(hour)); // set hours

  Wire.write(decToBcd(dayOfWeek)); // set day of week (1=Sunday, 7=Saturday)

  Wire.write(decToBcd(dayOfMonth)); // set date (1 to 31)

  Wire.write(decToBcd(month)); // set month

  Wire.write(decToBcd(year)); // set year (0 to 99)

  Wire.endTransmission();

}

void readDS3231time(byte *second,

byte *minute,

byte *hour,

byte *dayOfWeek,

byte *dayOfMonth,

byte *month,

byte *year)

{

  Wire.beginTransmission(DS3231_I2C_ADDRESS);

  Wire.write(0); // set DS3231 register pointer to 00h

  Wire.endTransmission();

  Wire.requestFrom(DS3231_I2C_ADDRESS, 7);

  // request seven bytes of data from DS3231 starting from register 00h

  *second = bcdToDec(Wire.read() & 0x7f);

  *minute = bcdToDec(Wire.read());

  *hour = bcdToDec(Wire.read() & 0x3f);

  *dayOfWeek = bcdToDec(Wire.read());

  *dayOfMonth = bcdToDec(Wire.read());

  *month = bcdToDec(Wire.read());

  *year = bcdToDec(Wire.read());

}

void displayTime()

{

  byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;

  // retrieve data from DS3231

  readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,

  &year);

  // send it to the serial monitor

  lcd.setCursor(10,0);

  lcd.print(hour, DEC);

  // convert the byte variable to a decimal number when displayed

  lcd.print(":");

  if (minute<10)

  {

    lcd.print("0");

  }

  lcd.print(minute, DEC);

  lcd.print(":");

  if (second<10)

  {

    lcd.print("0");

  }

  lcd.print(second, DEC);

  lcd.print(" ");

  

  lcd.setCursor(10,1);

  lcd.print(dayOfMonth, DEC);

  lcd.print("/");

  lcd.print(month, DEC);

  lcd.print("/");

  lcd.print(year, DEC);

   /*

  lcd.print(" Day of week: ");

  switch(dayOfWeek){

   

  case 1:

    lcd.println("Sunday");

    break;

  case 2:

    lcd.println("Monday");

    break;

  case 3:

    lcd.println("Tuesday");

    break;

  case 4:

    lcd.println("Wednesday");

    break;

  case 5:

    lcd.println("Thursday");

    break;

  case 6:

    lcd.println("Friday");

    break;

  case 7:

    lcd.println("Saturday");

    break;

  

  }

    */

}

void loop(){

displayTime();

gasmq135();

gasmq7();

debu();

 float h = dht.readHumidity();

 float t = dht.readTemperature();

 float f = dht.readTemperature(true);

  hum = h;

  suhu = t;

  if (isnan(h) || isnan(t) || isnan(f)) {

    Serial.println("Failed to read from DHT sensor!");

    return;

  }

  float hif = dht.computeHeatIndex(f, h);

  float hic = dht.computeHeatIndex(t, h, false);

  

lcd.setCursor(0,0); 

lcd.print("Gas1=");

lcd.print(ppm);

lcd.print("   ");

lcd.setCursor(0,1); 

lcd.print("Gas2=");

lcd.print(ppm2);

lcd.print("   ");

lcd.setCursor(0,2); 

lcd.print("debu=");

lcd.print(Dustval);

lcd.print("   ");

lcd.setCursor(0,3); 

lcd.print("T/H=");

lcd.print(suhu);

lcd.print("/");

lcd.print(hum);

lcd.print("    ");

lcd.setCursor(10,2); 

lcd.print(cacah);

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(A3, 1023);

//Heather 1.4 V 90 s

    analogWrite(A3, (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(){

 byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;

  // retrieve data from DS3231

  readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,

  &year);

  

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("waktu=");

    myFile.print(hour); 

    myFile.print(":");

    myFile.print(minute); 

    myFile.print(":");

    myFile.println(second);

    myFile.print("Tanggal=");

    myFile.print(dayOfWeek); 

    myFile.print("/");

    myFile.print(dayOfMonth); 

    myFile.print("/");

    myFile.print(month);

    myFile.print("/");

    myFile.println(year); 

    myFile.print("CO2= ");

    myFile.println(ppm);

    myFile.print("CO= ");

    myFile.println(ppm2);

    myFile.print("Debu= ");

    myFile.println(Dustval);

    myFile.print("Suhu= ");

    myFile.println(suhu);

    myFile.print("Kelembaban= ");

    myFile.println(hum); 

    // 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");

  }

}

h. VIDEO HASILNYA