Project Cards

Touch LCD Breakout Game

it's a small gaming device. this can make even the kids. it is very simple and easy project

Components Needed:

LCD display buzzer microsd-card

View Example Code

#include "SD.h"
#include "adafruit_1947_Obj.h"
#include "screen.h"
#include "ourOSObj.h"

ourOSObj  ourOS;

void setup() {
   
   Serial.begin(57600);                                           //  Fire up serial for debugging.
   if (!initScreen(ADAFRUIT_1947,ADA_1947_SHIELD_CS,PORTRAIT)) {  // Init screen.
      Serial.println("NO SCREEN!");                               // Screen init failed. Tell user.
      Serial.flush();                                             // Make sure the message gets out.
      while(true);                                                // Lock the process here.
   }
   if (!SD.begin(ADA_1947_SHIELD_SDCS)) {                         // With icons, we now MUST have an SD card.
      Serial.println("NO SD CARD!");                              // Tell user we have no SD card.
      Serial.flush();                                             // Make sure the message gets out.
      while(true);                                                // Lock the process here.
   }
   ourEventMgr.begin();                                           // Startup our event manager.
   ourOS.begin();                                                 // Boot OS manager.
   nextPanel = breakoutApp;                                       // <<-- URISH LOOK HERE!!
}


void loop() {     // During loop..
   
  idle();         // Idlers get their time.
  ourOS.loop();   // ourOS gets time to pass on to the current panel.
}

        

Eletronic Safe

it is small eletronic safe. the user can only open with a specific password

Components Needed:

servo lcd1602 Reference membrane-keypad

View Example Code

#include "LiquidCrystal.h"
#include "Keypad.h"
#include "Servo.h"
#include "SafeState.h"
#include "icons.h"

/* Locking mechanism definitions */
#define SERVO_PIN 6
#define SERVO_LOCK_POS   20
#define SERVO_UNLOCK_POS 90
Servo lockServo;

/* Display */
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

/* Keypad setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

/* SafeState stores the secret code in EEPROM */
SafeState safeState;

void lock() {
  lockServo.write(SERVO_LOCK_POS);
  safeState.lock();
}

void unlock() {
  lockServo.write(SERVO_UNLOCK_POS);
}

void showStartupMessage() {
  lcd.setCursor(4, 0);
  lcd.print("Welcome!");
  delay(1000);

  lcd.setCursor(0, 2);
  String message = "ArduinoSafe v1.0";
  for (byte i = 0; i < message.length(); i++) {
    lcd.print(message[i]);
    delay(100);
  }
  delay(500);
}

String inputSecretCode() {
  lcd.setCursor(5, 1);
  lcd.print("[____]");
  lcd.setCursor(6, 1);
  String result = "";
  while (result.length() < 4) {
    char key = keypad.getKey();
    if (key >= '0' && key <= '9') {
      lcd.print('*');
      result += key;
    }
  }
  return result;
}

void showWaitScreen(int delayMillis) {
  lcd.setCursor(2, 1);
  lcd.print("[..........]");
  lcd.setCursor(3, 1);
  for (byte i = 0; i < 10; i++) {
    delay(delayMillis);
    lcd.print("=");
  }
}

bool setNewCode() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Enter new code:");
  String newCode = inputSecretCode();

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Confirm new code");
  String confirmCode = inputSecretCode();

  if (newCode.equals(confirmCode)) {
    safeState.setCode(newCode);
    return true;
  } else {
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print("Code mismatch");
    lcd.setCursor(0, 1);
    lcd.print("Safe not locked!");
    delay(2000);
    return false;
  }
}

void showUnlockMessage() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.write(ICON_UNLOCKED_CHAR);
  lcd.setCursor(4, 0);
  lcd.print("Unlocked!");
  lcd.setCursor(15, 0);
  lcd.write(ICON_UNLOCKED_CHAR);
  delay(1000);
}

void safeUnlockedLogic() {
  lcd.clear();

  lcd.setCursor(0, 0);
  lcd.write(ICON_UNLOCKED_CHAR);
  lcd.setCursor(2, 0);
  lcd.print(" # to lock");
  lcd.setCursor(15, 0);
  lcd.write(ICON_UNLOCKED_CHAR);

  bool newCodeNeeded = true;

  if (safeState.hasCode()) {
    lcd.setCursor(0, 1);
    lcd.print("  A = new code");
    newCodeNeeded = false;
  }

  auto key = keypad.getKey();
  while (key != 'A' && key != '#') {
    key = keypad.getKey();
  }

  bool readyToLock = true;
  if (key == 'A' || newCodeNeeded) {
    readyToLock = setNewCode();
  }

  if (readyToLock) {
    lcd.clear();
    lcd.setCursor(5, 0);
    lcd.write(ICON_UNLOCKED_CHAR);
    lcd.print(" ");
    lcd.write(ICON_RIGHT_ARROW);
    lcd.print(" ");
    lcd.write(ICON_LOCKED_CHAR);

    safeState.lock();
    lock();
    showWaitScreen(100);
  }
}

void safeLockedLogic() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.write(ICON_LOCKED_CHAR);
  lcd.print(" Safe Locked! ");
  lcd.write(ICON_LOCKED_CHAR);

  String userCode = inputSecretCode();
  bool unlockedSuccessfully = safeState.unlock(userCode);
  showWaitScreen(200);

  if (unlockedSuccessfully) {
    showUnlockMessage();
    unlock();
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Access Denied!");
    showWaitScreen(1000);
  }
}

void setup() {
  lcd.begin(16, 2);
  init_icons(lcd);

  lockServo.attach(SERVO_PIN);

  /* Make sure the physical lock is sync with the EEPROM state */
  Serial.begin(115200);
  if (safeState.locked()) {
    lock();
  } else {
    unlock();
  }

  showStartupMessage();
}

void loop() {
  if (safeState.locked()) {
    safeLockedLogic();
  } else {
    safeUnlockedLogic();
  }
}


        

Mini piano

You can control the colorful buttons with your keyboard: After starting the simulation, click anywhere in the diagram to focus it. Then press any key between 1 and 8 to play the piano.

Components Needed:

pushbutton buzzer

View Example Code

#include "SD.h"
#include "adafruit_1947_Obj.h"
#include "screen.h"
#include "ourOSObj.h"

ourOSObj  ourOS;

void setup() {
   
   Serial.begin(57600);                                           //  Fire up serial for debugging.
   if (!initScreen(ADAFRUIT_1947,ADA_1947_SHIELD_CS,PORTRAIT)) {  // Init screen.
      Serial.println("NO SCREEN!");                               // Screen init failed. Tell user.
      Serial.flush();                                             // Make sure the message gets out.
      while(true);                                                // Lock the process here.
   }
   if (!SD.begin(ADA_1947_SHIELD_SDCS)) {                         // With icons, we now MUST have an SD card.
      Serial.println("NO SD CARD!");                              // Tell user we have no SD card.
      Serial.flush();                                             // Make sure the message gets out.
      while(true);                                                // Lock the process here.
   }
   ourEventMgr.begin();                                           // Startup our event manager.
   ourOS.begin();                                                 // Boot OS manager.
   nextPanel = breakoutApp;                                       // <<-- URISH LOOK HERE!!
}


void loop() {     // During loop..
   
  idle();         // Idlers get their time.
  ourOS.loop();   // ourOS gets time to pass on to the current panel.
}

        

Digital Alarm Clock

this project is small alaram system, we can adjust the minute and houre and aleram, when the time reach the aleram should ring

Components Needed:

pushbutton buzzer ds1307 7segment

View Example Code

#include "SevSeg.h"
#include "Button.h"
#include "AlarmTone.h"
#include "Clock.h"
#include "config.h"

const int COLON_PIN = 13;
const int SPEAKER_PIN = A3;

Button hourButton(A0);
Button minuteButton(A1);
Button alarmButton(A2);

AlarmTone alarmTone;
Clock clock;
SevSeg sevseg;

enum DisplayState {
  DisplayClock,
  DisplayAlarmStatus,
  DisplayAlarmTime,
  DisplayAlarmActive,
  DisplaySnooze,
};

DisplayState displayState = DisplayClock;
long lastStateChange = 0;

void changeDisplayState(DisplayState newValue) {
  displayState = newValue;
  lastStateChange = millis();
}

long millisSinceStateChange() {
  return millis() - lastStateChange;
}

void setColon(bool value) {
  digitalWrite(COLON_PIN, value ? LOW : HIGH);
}

void displayTime() {
  DateTime now = clock.now();
  bool blinkState = now.second() % 2 == 0;
  sevseg.setNumber(now.hour() * 100 + now.minute());
  setColon(blinkState);
}

void clockState() {
  displayTime();

  if (alarmButton.read() == Button::RELEASED && clock.alarmActive()) {
    // Read alarmButton has_changed() to clear its state
    alarmButton.has_changed();
    changeDisplayState(DisplayAlarmActive);
    return;
  }

  if (hourButton.pressed()) {
    clock.incrementHour();
  }
  if (minuteButton.pressed()) {
    clock.incrementMinute();
  }
  if (alarmButton.pressed()) {
    clock.toggleAlarm();
    changeDisplayState(DisplayAlarmStatus);
  }
}

void alarmStatusState() {
  setColon(false);
  sevseg.setChars(clock.alarmEnabled() ? " on" : " off");
  if (millisSinceStateChange() > ALARM_STATUS_DISPLAY_TIME) {
    changeDisplayState(clock.alarmEnabled() ? DisplayAlarmTime : DisplayClock);
    return;
  }
}

void alarmTimeState() {
  DateTime alarm = clock.alarmTime();
  sevseg.setNumber(alarm.hour() * 100 + alarm.minute(), -1);

  if (millisSinceStateChange() > ALARM_HOUR_DISPLAY_TIME || alarmButton.pressed()) {
    changeDisplayState(DisplayClock);
    return;
  }

  if (hourButton.pressed()) {
    clock.incrementAlarmHour();
    lastStateChange = millis();
  }
  if (minuteButton.pressed()) {
    clock.incrementAlarmMinute();
    lastStateChange = millis();
  }
  if (alarmButton.pressed()) {
    changeDisplayState(DisplayClock);
  }
}

void alarmState() {
  displayTime();

  if (alarmButton.read() == Button::RELEASED) {
    alarmTone.play();
  }
  if (alarmButton.pressed()) {
    alarmTone.stop();
  }
  if (alarmButton.released()) {
    alarmTone.stop();
    bool longPress = alarmButton.repeat_count() > 0;
    if (longPress) {
      clock.stopAlarm();
      changeDisplayState(DisplayClock);
    } else {
      clock.snooze();
      changeDisplayState(DisplaySnooze);
    }
  }
}

void snoozeState() {
  sevseg.setChars("****");
  if (millisSinceStateChange() > SNOOZE_DISPLAY_TIME) {
    changeDisplayState(DisplayClock);
    return;
  }
}

void setup() {
  Serial.begin(115200);

  clock.begin();

  hourButton.begin();
  hourButton.set_repeat(500, 200);

  minuteButton.begin();
  minuteButton.set_repeat(500, 200);

  alarmButton.begin();
  alarmButton.set_repeat(1000, -1);

  alarmTone.begin(SPEAKER_PIN);

  pinMode(COLON_PIN, OUTPUT);

  byte digits = 4;
  byte digitPins[] = {2, 3, 4, 5};
  byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12};
  bool resistorsOnSegments = false;
  bool updateWithDelays = false;
  bool leadingZeros = true;
  bool disableDecPoint = true;
  sevseg.begin(DISPLAY_TYPE, digits, digitPins, segmentPins, resistorsOnSegments,
               updateWithDelays, leadingZeros, disableDecPoint);
  sevseg.setBrightness(90);
}

void loop() {
  sevseg.refreshDisplay();

  switch (displayState) {
    case DisplayClock:
      clockState();
      break;

    case DisplayAlarmStatus:
      alarmStatusState();
      break;

    case DisplayAlarmTime:
      alarmTimeState();
      break;

    case DisplayAlarmActive:
      alarmState();
      break;

    case DisplaySnooze:
      snoozeState();
      break;
  }
}

        