Membuat Jam Digital Lengkap Dengan Set Alarm Dan Stopwatch, ~
Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang memiliki fitur jam digital, setting alarm dan stopwatch, sistem kerjanya yaitu alat ini menggunakan Arduino sebagai kendali atau kontroller yang akan mengakses RTC, buzzer dan tombol. terdapat 5 buah tombol yang akan digunakan sebagai selektor menu dan kendali tampilan, buzzer sebagai output alarmnya dan RTC sebagai pemberi data jam dan tanggal. Untuk tampilan display menggunakan LCD 16x2 dengan backlight warna kuning. untuk lebih jelasnya berikut program dan skema alatnya.
Alat yang di butuhkna:
- Arduino uno atau bisa juga pake yang nano
- LCD dispalay 16x2
- RTC DS1307
- Papan PCB matirx
- Push button 5 buah
- Buzzer
- Kable jumper secukupnya
Berikut ini skema diagramnya
 |
| Skema LCD16x2 |
 |
| Skema buzzer |
 |
| Skema RTC DS1307 |
 |
| Skema Push Button |
Selanjutnya adalah memasukan sketch code pada Arduino IDE
Klik show untuk melihat sketch
#include "Wire.h"
#include
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
#define DS3231_I2C_ADDRESS 0x68
// Convert normal decimal numbers to binary coded decimal
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) );
}
const int buttonPin1 = A0; // the number of the pushbutton pin
const int buttonPin2 = A1; // the number of the pushbutton pin
const int buttonPin3 = A2; // the number of the pushbutton pin
const int buttonPin4 = 9; // the number of the pushbutton pin
const int buttonPin5 = 10; // the number of the pushbutton pin
int buttonState1 = 0;
int buttonState2 = 0;
int buttonState3 = 0;
int buttonState4 = 0;
int buttonState5 = 0;
int a = 0;
int mmz = 0;
int detz = 0;
int menz = 0;
int jamz = 0;
int stm = 0;
int stj = 0;
int savestj = 0;
int savestm = 0;
void setup()
{
lcd.begin(16, 2);
lcd.clear();
lcd.noCursor();
Wire.begin();
pinMode(8, OUTPUT);
pinMode(buttonPin1, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(buttonPin4, INPUT);
pinMode(buttonPin5, INPUT);
//Serial.begin(9600);
// set the initial time here:
// DS3231 seconds, minutes, hours, day, date, month, year
// setDS3231time(0,12,02,2,5,1,16);
}
void setDS3231time(byte second, byte minute, byte hour, byte dayOfWeek, byte dayOfMonth, byte month, byte year)
{
// 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(0, 0);
lcd.print(hour, DEC);
// convert the byte variable to a decimal number when displayed
lcd.print(":");
if (minute<10 br="">
{
lcd.print("0");
}
lcd.print(minute, DEC);
lcd.print(":");
if (second<10 br="">
{
lcd.print("0");
}
lcd.print(second, DEC);
lcd.setCursor(0, 1);
lcd.print(dayOfMonth, DEC);
lcd.print("/");
lcd.print(month, DEC);
lcd.print("/");
lcd.print(year, DEC);
if ((hour == savestj) && (minute == savestm)) {
digitalWrite(8, HIGH);
}
}
void loop()
{
digitalWrite(8, LOW);
mmz = 0;
detz = 0;
menz = 0;
jamz = 0;
stj = savestj;
stm = savestm;
buttonState1 = digitalRead(buttonPin1);
buttonState2 = digitalRead(buttonPin2);
buttonState3 = digitalRead(buttonPin3);
buttonState4 = digitalRead(buttonPin4);
buttonState5 = digitalRead(buttonPin5);
if ( buttonState2 == LOW ){
delay(200);
a = a + 1;
if ( a > 2 ) {
a = 0;
} else if (a < 0) {
a = 2;
}
}
else if ( buttonState3 == LOW ) {
delay(200);
a = a - 1;
if ( a > 2 ) {
a = 0;
} else if (a < 0) {
a = 2;
}
}
if ( a == 0 ) {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("PILIH MENU");
lcd.setCursor(0, 1);
lcd.print(" JAM ");
delay(500);
}
else if ( a == 1 ) {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("PILIH MENU");
lcd.setCursor(0, 1);
lcd.print(" SET ALARM ");
delay(500);
}
else if ( a == 2 ) {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("PILIH MENU");
lcd.setCursor(0, 1);
lcd.print(" STOPWATCH ");
delay(500);
}
if (( buttonState5 == LOW ) && ( a == 0 )) {
lcd.clear();
while ( buttonState1 == HIGH )
{
delay(200);
buttonState1 = digitalRead(buttonPin1);
displayTime();
}
}
if (( buttonState5 == LOW ) && ( a == 1 )) {
lcd.clear();
while ( buttonState1 == HIGH )
{
buttonState1 = digitalRead(buttonPin1);
buttonState2 = digitalRead(buttonPin2);
buttonState3 = digitalRead(buttonPin3);
buttonState4 = digitalRead(buttonPin4);
buttonState5 = digitalRead(buttonPin5);
lcd.setCursor(0, 0);
lcd.print("Set Jam : ");
lcd.print(stj);
lcd.setCursor(0, 1);
lcd.print("Set Menit : ");
lcd.print(stm);
delay(200);
if ( buttonState3 == LOW ){
stj = 0;
stm = 0;
lcd.clear();
}
else if ( buttonState4 == LOW ){
stj = stj + 1;
lcd.clear();
}
else if ( buttonState5 == LOW ){
stm = stm + 1;
lcd.clear();
}
else if ( buttonState1 == LOW ){
savestm = stm;
savestj = stj;
}
}
}
if (( buttonState5 == LOW ) && ( a == 2 )) {
lcd.clear();
while ( buttonState1 == HIGH )
{
buttonState1 = digitalRead(buttonPin1);
buttonState2 = digitalRead(buttonPin2);
buttonState3 = digitalRead(buttonPin3);
buttonState4 = digitalRead(buttonPin4);
buttonState5 = digitalRead(buttonPin5);
mmz = mmz + 1;
delay(10);
if (mmz == 100) {
detz = detz + 1;
mmz = 0;
}
if (detz == 60) {
menz = menz + 1;
detz = 0;
}
if (menz == 60) {
jamz = jamz + 1;
menz = 0;
}
lcd.setCursor(0, 0);
lcd.print(jamz);
lcd.print(":");
lcd.print(menz);
lcd.print(":");
lcd.print(detz);
lcd.print(":");
lcd.print(mmz);
if ( buttonState4 == LOW ){
delay(200);
while (buttonState3 == HIGH)
{
lcd.setCursor(0, 0);
lcd.print(jamz);
lcd.print(":");
lcd.print(menz);
lcd.print(":");
lcd.print(detz);
lcd.print(":");
lcd.print(mmz);
delay(1000);
buttonState3 = digitalRead(buttonPin3);
buttonState1 = digitalRead(buttonPin1);
}
}
}
}
}
}
BERIKUT INI ADALAH VIDEO HASILNYA
Salam Arduino Indonesia
