Hey guys, newbie in arduino here, I'm following this guide on making an alarm clock (https://marobotic.com/2023/12/09/real-time-clock-with-alarm-using-arduino-and-rtc-ds3231/) but I wanted to add my own spin to it by including a motion sensor to deactivate the alarm by waving my hand. Any suggestions on how I can do that?
I'm planning to use the hc-sr04 ultrasonic sensor
You can modify the code in Arduino and ultrasonic sensor triggers LED tutorial
Hello, I'm following this guide on making an alarm clock (https://marobotic.com/2023/12/09/real-time-clock-with-alarm-using-arduino-and-rtc-ds3231/) but I'm adding an ultrasonic sensor (HC-SR04) so I can deactivate the alarm buzzer when it rings by covering the sensor with my hand.
The sensor is placed on a separate arduino uno board and connected by pins 11(Input), 12(Output), and GRD to the clock arduino uno board.
I have codes for both boards and they work fine independently but I have no idea how to connect the codes to make them work together. Can someone take a look at my code and guide me on what to do?
Alarm Clock Code: Upload files for free - AlarmClockCode.ino - ufile.io
Ultrasonic Sensor Code: Upload files for free - SensorCode.ino - ufile.io
Your two topics on the same subject have been merged. Cross posting wastes peoples time.
Please post your code in a post; do not use a link forcing people to download from some site. You're also missing out on the knowledge of people that are using cell phones.
If your code is more than 120kB, attaching a file here is acceptable.
Sorry I'm still new to this website. Couldn't load my original post so I made another one.
Thanks for merging them! Also, apologies for posting a link, the file isn't big its just a lot of lines of code so I thought people would prefer to download it instead.
Anyways, here is the code for the Alarm Clock:
#include <DS3231.h> // RTC DS3231 Library
#include <Wire.h> // I2C Connection Library
#include <LiquidCrystal.h> // LCD Library
#include <EEPROM.h> // Memory Library
LiquidCrystal lcd(2, 3, 4, 5, 6, 7); // Arduino pins to LCD
#define bt_time A0
#define bt_up A1
#define bt_down A2
#define bt_alarm A3
#define buzzer 8
// Notes for music
#define C4 262
#define CS4 277
#define D4 294
#define DS4 311
#define E4 330
#define F4 349
#define FS4 370
#define G4 392
#define GS4 415
#define A4 440
#define AS4 466
#define B4 494
#define C5 523
#define CS5 554
#define D5 587
#define DS5 622
#define E5 659
#define F5 698
#define FS5 740
#define G5 784
#define GS5 831
#define A5 880
#define AS5 932
#define B5 988
#define C6 1047
#define CS6 1109
#define D6 1175
#define DS6 1245
#define E6 1319
#define F6 1397
#define FS6 1480
#define G6 1568
#define GS6 1661
#define A6 1760
#define AS6 1865
#define B6 1976
// Init DS3231
DS3231 rtc(SDA, SCL);
// Init a Time-data structure
Time t;
int hh = 0, mm = 0, ss = 0, dd = 0, bb = 0, set_day;
int yy = 0;
String Day = " ";
int AlarmHH = 21, AlarmMM = 22, AlarmSS = 23, setMode = 0, setAlarm = 0, alarmMode = 0;
int stop = 0, mode = 0, flag = 0;
// EEPROM Store Variable
uint8_t HH;
uint8_t MM;
byte bell_symbol[8] = {
B00100,
B01110,
B01110,
B01110,
B01110,
B11111,
B01000,
B00100
};
byte thermometer_symbol[8] = {
B00100,
B01010,
B01010,
B01110,
B01110,
B11111,
B11111,
B01110
};
void setup() {
// Setup Serial connection
Serial.begin(9600);
rtc.begin();
pinMode(bt_time, INPUT_PULLUP);
pinMode(bt_up, INPUT_PULLUP);
pinMode(bt_down, INPUT_PULLUP);
pinMode(bt_alarm, INPUT_PULLUP);
pinMode(buzzer, OUTPUT);
lcd.createChar(1, thermometer_symbol);
lcd.createChar(2, bell_symbol);
lcd.begin(16, 2); // Configura LCD numero columnas y filas
lcd.setCursor(0, 0); // Show "TIME" on the LCD
lcd.print(" Real Time Clock ");
lcd.setCursor(0, 1);
lcd.print(" With Alarm ");
delay(2000);
lcd.clear();
stop = EEPROM.read(50);
if (stop == 0) {
// Do nothing
} else {
WriteEeprom();
}
EEPROM.write(50, 0);
ReadEeprom();
// Set RTC for the first time
// rtc.setDOW(2); // Set Day-of-Week to SUNDAY
// rtc.setTime(00, 9, 50);
// rtc.setDate(12, 11, 2017);
}
void loop() {
t = rtc.getTime();
Day = rtc.getDOWStr(1);
if (setMode == 0) {
hh = t.hour, DEC;
mm = t.min, DEC;
ss = t.sec, DEC;
dd = t.date, DEC;
bb = t.mon, DEC;
yy = t.year, DEC;
}
if (hh >= 5 && hh < 12) {
digitalWrite(11, 1);
digitalWrite(13, 0);
}
if (hh >= 12 && hh < 18) {
digitalWrite(11, 0);
digitalWrite(13, 1);
}
if (hh >= 18 && hh < 24) {
digitalWrite(11, 1);
digitalWrite(13, 1);
}
if (hh >= 0 && hh < 5) {
digitalWrite(11, 0);
digitalWrite(13, 0);
}
if (setAlarm == 0) {
lcd.setCursor(0, 0);
lcd.print((hh / 10) % 10);
lcd.print(hh % 10);
lcd.print(":");
lcd.print((mm / 10) % 10);
lcd.print(mm % 10);
lcd.print(":");
lcd.print((ss / 10) % 10);
lcd.print(ss % 10);
lcd.print(" ");
if (mode == 1) {
lcd.write(2);
} else {
lcd.print(" ");
}
lcd.print(" ");
lcd.write(1);
lcd.print(rtc.getTemp(), 0);
lcd.write(223);
lcd.print("C");
lcd.print(" ");
lcd.setCursor(1, 1);
lcd.print(Day);
lcd.print(" ");
lcd.print((dd / 10) % 10);
lcd.print(dd % 10);
lcd.print("/");
lcd.print((bb / 10) % 10);
lcd.print(bb % 10);
lcd.print("/");
lcd.print((yy / 1000) % 10);
lcd.print((yy / 100) % 10);
lcd.print((yy / 10) % 10);
lcd.print(yy % 10);
}
setupClock();
setTimer();
delay(100);
blinking();
// Alarm
if (alarmMode == 1 && mode == 1 && hh == AlarmHH && mm == AlarmMM && ss >= AlarmSS) {
digitalWrite(buzzer, HIGH);
tone(8, B4);
delay(300);
tone(8, E5);
delay(600);
tone(8, G5);
delay(120);
tone(8, FS5);
delay(230);
tone(8, E5);
delay(600);
tone(8, B5);
delay(300);
tone(8, A5);
delay(900);
tone(8, FS5);
delay(900);
tone(8, E5);
delay(600);
tone(8, G5);
delay(130);
tone(8, FS5);
delay(200);
tone(8, DS5);
delay(600);
tone(8, E5);
delay(300);
tone(8, B4);
delay(1530);
tone(8, B4);
delay(300);
tone(8, E5);
delay(600);
tone(8, G5);
delay(120);
tone(8, FS5);
delay(230);
tone(8, E5);
delay(600);
tone(8, B5);
delay(300);
tone(8, D6);
delay(700);
tone(8, CS6);
delay(300);
tone(8, C6);
delay(600);
tone(8, GS5);
delay(300);
tone(8, C6);
delay(600);
tone(8, B5);
delay(130);
tone(8, AS5);
delay(190);
tone(8, AS4);
delay(700);
tone(8, G5);
delay(230);
tone(8, E5);
delay(600);
tone(8, G4);
delay(300);
tone(8, B4);
delay(900);
digitalWrite(buzzer, LOW);
} else {
digitalWrite(buzzer, LOW);
}
delay(100);
}
void blinking() {
// BLINKING SCREEN
if (setAlarm < 2 && setMode == 1) {
lcd.setCursor(0, 0);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 2) {
lcd.setCursor(3, 0);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 3) {
lcd.setCursor(6, 0);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 4) {
lcd.setCursor(1, 1);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 5) {
lcd.setCursor(5, 1);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 6) {
lcd.setCursor(8, 1);
lcd.print(" ");
}
if (setAlarm < 2 && setMode == 7) {
lcd.setCursor(11, 1);
lcd.print(" ");
}
// Alarm
if (setMode == 0 && setAlarm == 1) {
lcd.setCursor(6, 0);
lcd.print(" ");
}
if (setMode == 0 && setAlarm == 2) {
lcd.setCursor(4, 1);
lcd.print(" ");
}
if (setMode == 0 && setAlarm == 3) {
lcd.setCursor(7, 1);
lcd.print(" ");
}
if (setMode == 0 && setAlarm == 4) {
lcd.setCursor(10, 1);
lcd.print(" ");
}
}
void setupClock() {
if (setMode == 8) {
lcd.setCursor(0, 0);
lcd.print(F("Set Date Finish "));
lcd.setCursor(0, 1);
lcd.print(F("Set Time Finish "));
delay(1000);
rtc.setTime(hh, mm, ss);
rtc.setDate(dd, bb, yy);
lcd.clear();
setMode = 0;
}
if (setAlarm == 5) {
lcd.setCursor(0, 0);
lcd.print(F("Set Alarm Finish"));
lcd.setCursor(0, 1);
lcd.print(F("-EEPROM Updated-"));
WriteEeprom();
delay(2000);
lcd.clear();
setAlarm = 0;
alarmMode = 1;
}
if (setAlarm > 0) {
alarmMode = 0;
}
if (digitalRead(bt_time) == 0 && flag == 0) {
flag = 1;
if (setAlarm > 0) {
setAlarm = 5;
} else {
setMode = setMode + 1;
}
}
if (digitalRead(bt_alarm) == 0 && flag == 0) {
flag = 1;
if (setMode > 0) {
setMode = 8;
} else {
setAlarm = setAlarm + 1;
}
lcd.clear();
}
if (digitalRead(bt_time) == 1 && digitalRead(bt_alarm) == 1) {
flag = 0;
}
if (digitalRead(bt_up) == 0) {
if (setAlarm < 2 && setMode == 1) hh = hh + 1;
if (setAlarm < 2 && setMode == 2) mm = mm + 1;
if (setAlarm < 2 && setMode == 3) ss = ss + 1;
if (setAlarm < 2 && setMode == 4) set_day = set_day + 1;
if (setAlarm < 2 && setMode == 5) dd = dd + 1;
if (setAlarm < 2 && setMode == 6) bb = bb + 1;
if (setAlarm < 2 && setMode == 7) yy = yy + 1;
// Alarm
if (setMode == 0 && setAlarm == 1) mode = 1;
if (setMode == 0 && setAlarm == 2 && AlarmHH < 23) AlarmHH = AlarmHH + 1;
if (setMode == 0 && setAlarm == 3 && AlarmMM < 59) AlarmMM = AlarmMM + 1;
if (setMode == 0 && setAlarm == 4 && AlarmSS < 59) AlarmSS = AlarmSS + 1;
if (hh > 23) hh = 0;
if (mm > 59) mm = 0;
if (ss > 59) ss = 0;
if (set_day > 7) set_day = 0;
if (dd > 31) dd = 0;
if (bb > 12) bb = 0;
if (yy > 2030) yy = 2000;
rtc.setDOW(set_day);
}
if (digitalRead(bt_down) == 0) {
if (setAlarm < 2 && setMode == 1) hh = hh - 1;
if (setAlarm < 2 && setMode == 2) mm = mm - 1;
if (setAlarm < 2 && setMode == 3) ss = ss - 1;
if (setAlarm < 2 && setMode == 4) set_day = set_day - 1;
if (setAlarm < 2 && setMode == 5) dd = dd - 1;
if (setAlarm < 2 && setMode == 6) bb = bb - 1;
if (setAlarm < 2 && setMode == 7) yy = yy - 1;
// Alarm
if (setMode == 0 && setAlarm == 1) mode = 0;
if (setMode == 0 && setAlarm == 2 && AlarmHH > 0) AlarmHH = AlarmHH - 1;
if (setMode == 0 && setAlarm == 3 && AlarmMM > 0) AlarmMM = AlarmMM - 1;
if (setMode == 0 && setAlarm == 4 && AlarmSS > 0) AlarmSS = AlarmSS - 1;
if (hh < 0) hh = 23;
if (mm < 0) mm = 59;
if (ss < 0) ss = 59;
if (set_day < 0) set_day = 7;
if (dd < 0) dd = 31;
if (bb < 0) bb = 12;
if (yy < 0) yy = 2030;
rtc.setDOW(set_day);
}
}
void setTimer() {
// Alarm
if (setMode == 0 && setAlarm > 0) {
lcd.setCursor(0, 0);
lcd.print("Alarm ");
if (mode == 0) {
lcd.print("Deactivate");
} else {
lcd.print("Activated ");
}
lcd.setCursor(4, 1);
lcd.print((AlarmHH / 10) % 10);
lcd.print(AlarmHH % 10);
lcd.print(":");
lcd.print((AlarmMM / 10) % 10);
lcd.print(AlarmMM % 10);
lcd.print(":");
lcd.print((AlarmSS / 10) % 10);
lcd.print(AlarmSS % 10);
}
}
void ReadEeprom() {
AlarmHH = EEPROM.read(1);
AlarmMM = EEPROM.read(2);
AlarmSS = EEPROM.read(3);
mode = EEPROM.read(4);
}
void WriteEeprom() {
EEPROM.write(1, AlarmHH);
EEPROM.write(2, AlarmMM);
EEPROM.write(3, AlarmSS);
EEPROM.write(4, mode);
}
And here is the code for the sensor:
const int trig = 9;
const int echo = 10;
void setup() {
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
Serial.begin(9600);
}
void loop()
{
digitalWrite(trig, LOW);
delayMicroseconds(2);
digitalWrite(trig, HIGH);
delayMicroseconds(10);
digitalWrite(trig, LOW);
int Duration = pulseIn(echo, HIGH);
int Distance = (0.0343 * Duration) / 2;
Serial.println(Distance);
delay(1000);
}
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