PHYSIs Beacon 모듈 - iBeacon 예제

Beacon 모듈의 경우, 아두이노와 모듈 간의 소프트웨어 통신을 활용하여 설정합니다.

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#include <PHYSIs_Master.h>                  // PHYSIs_Master 라이브러리 추가
 
PHYSIs_Beacon beacon(6, 5);                // 비콘 객체 선언 (Rx, Tx)
 
void setup() {
  Serial.begin(115200);
 
  if (beacon.begin()) {                     // 비콘 모듈 연결    
    beacon.init();                                  // 모듈 고장 초기화
    delay(1000);
    beacon.reboot();                                // 모듈 재시작
    delay(1000);
    if (beacon.isConnected()) {                     // 모듈 연결 확인      
      delay(1000);
      Serial.print("iBeacon Address : ");
      Serial.println(beacon.getAddress());          // 모듈 MAC 주소 출력
      delay(1000);
      beacon.setADInterval('5');                    // 신호 출력 간격 설정 ( '1 '~ 'F' )
      delay(1000);
      beacon.setDeviceName("P_Beacon");             // 디바이스 이름 설정
      delay(1000);
      beacon.setBeaconMode();                       // 비콘 모드 설정
      delay(1000);
      beacon.setOnlyBroadcast();                    // 단일 신호 출력 모드 설정
      delay(1000);
      beacon.setAutoSleepStatus(true);              // 오토 슬립 모드 설정
      delay(1000);
      beacon.reboot();                              // 모듈 재시작
    }
  }
}
 
void loop() {
 
}
 cs

PHYSIs 메이커보드 - Beacon Scanner(도난 방지기) 예제

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#include <PHYSIs_Master.h>
#include <Adafruit_NeoPixel.h>        // LED 라이브러리 추가
 
#define BUZZER_PIN    4               // 부저 연결 Pin 번호
#define LED_PIN       2               // LED Ring 연결 Pin 번호
#define LED_PIXELs_SIZE   12          // LED Ring 픽셀 수
 
// 객체 선언
PHYSIs_Beacon beacon(10, 9); // Rx, Tx
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(LED_PIXELs_SIZE, LED_PIN, NEO_GRB + NEO_KHZ800);
 
String targetAddr = "C8FD198E4D15";          // 탐색 대상 비콘 주소값
uint32_t distColor;                          // 거리 상태 색상
int nonfindCnt = 0;                          // 검색 오류 카운트
 
long waringTime = 0;
 
void setup() {
  Serial.begin(115200);
  pixels.begin();                                      // LED 링 모듈 활성화
  pixels.setBrightness(75);
 
  if (beacon.begin()) {                                // 비콘 모듈 연결
    beacon.init();                                        // 모듈 고장 초기화
    delay(1000);
    beacon.reboot();                                      // 모듈 재시작
    delay(1000);
    if (beacon.isConnected()) {                           // 모듈 연결 확인
      beacon.setBeaconScanner();                          // 비콘 스캔 모드 설정
      beacon.beaconScanResult = &beaconScanResult;        // 비콘 검색 결과 콜백 함수 지정
    }
  }
}
 
void loop() {
  beacon.beaconDiscovery();                     // 비콘 검색
 
 
  if (nonfindCnt > 5)                           // 대상 비콘이 5회 이상 검색되지 않으면
  {
    if (millis() - waringTime > 1000) {                               // 1초 마다 부저음 출력
      digitalWrite(BUZZER_PIN, !digitalRead(BUZZER_PIN));
      waringTime = millis();
    }
  }
}
 
// 비콘 검색 결과 콜백 함수
void beaconScanResult(String addr, int rssi) {
  Serial.print(addr);
  Serial.print(", ");
  Serial.println(rssi);
  if (addr.equals(targetAddr)) {                      // 대상 비콘이 검색될 경우,
    nonfindCnt = 0;                                         // 검색 오류 카운트 초기화
    showStatusLed(rssi);                                    // 비콘 거리 상태 LED 출력
  } else {                                            // 대상 비콘이 아닌 경우,
    nonfindCnt++;                                           // 검색 오류 카운트 증가
  }
}
 
// 비콘 거리 상태 LED 출력
void showStatusLed(int rssi) {
  distColor = rssi > -50 ? pixels.Color(0, 255, 0) : pixels.Color(255, 255, 0);
  for (int i = 0; i < pixels.numPixels(); i++) {
    pixels.setPixelColor(i, distColor);
  }
  pixels.show();
}
 
 cs

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#include <PHYSIs_Master.h>
#include <DHT.h>                      // 온습도 센서 라이브러리 사용 
#include <Adafruit_NeoPixel.h>
 
#define DUST_PIN        2             // 미세먼지 연결 Pin 번호 
#define DHT_PIN         4             // 온습도 센서 연결 Pin 번호
#define DHT_TYPE        DHT22         // 온습도 센서 타입
#define LED_PIN         5
 
 
PHYSIs_WiFi physisWiFi;
DHT dht(DHT_PIN, DHT_TYPE);
Adafruit_NeoPixel strip = Adafruit_NeoPixel(12, LED_PIN, NEO_GRB + NEO_KHZ800);
 
const String WIFI_SSID     = "your wifi";             // WiFi 명
const String WIFI_PWD      = "your password";         // WiFi 비밀번호
const String SERIAL_NUMBER = "your serial number";    // PHYSIs KIT 시리얼번호
const String PUB_TOPIC     = "Sensing";               // Publish Topic
 
unsigned long sensingTime = 0;                // 센서 측정 시간
unsigned long sensingInterval = 2000;         // 센서 측정 간격
unsigned long dustStartTime = 0;              // 미세먼지 측정 시작 시간
unsigned long sampletimeMS = 10000;           // 미세먼지 샘플링 설정 시간
unsigned long lowPulseOccupancy = 0;          // 미세먼지 Pulse 합계
int humidity, temperature;                    // 온습도 값
int dustugm3;                                 // 미세먼지 농도값
uint32_t ledColor;
 
void setup() {
  Serial.begin(115200);
  dht.begin();                                // 온습도 센서 활성화
  strip.begin();
  
  physisWiFi.enable();                             // WiFi 모듈 활성화
 
  physisWiFi.connectWiFi(WIFI_SSID, WIFI_PWD);     // 지정 WiFi에 대한 연결 요청
  Serial.print("# WiFi Connecting..");
  delay(1000);
  while (!physisWiFi.isWiFiStatus()) {             // WiFi가 연결될때 까지 반복해서 연결상태를 확인
    Serial.print(".");
    delay(1000);
  }
  Serial.println(F("Connected..."));
 
  Serial.print("# MQTT Connecting..");
  if (physisWiFi.connectMQTT()) {                  // PHYSIs 플랫폼의 MQTT Broker와 연결
    Serial.println("Success...");
  } else {
    Serial.print("Fail...");
  }
 
  strip.setBrightness(50);
  strip.show();                                   // LED 초기화
}
 
void loop() {
  if (millis() - sensingTime >= sensingInterval) {        // 센서 측정 시간이 측정 간격을 초과하였을 경우,
    measureDust();                                            // 미세먼지 측정
    measureDHT();                                             // 온습도 측정
    setDustLedColor();                                        // 미세먼지 상태 LED 색상 설정
    sendSensingData();                                        // 미세먼지, 온습도 정보 전송
    sensingTime = millis();                                   // 센서 측정 시간 재설정
  }
  
  showLedEffect();                                      // 미세먼지 상태 LED 출력
}
 
 
// 미세먼지 농도에 따른 LED 색상 설정 함수
void setDustLedColor(){
  if(dustugm3 > 35){
    ledColor = strip.Color(255, 0, 0);
  }else if (dustugm3 < 15){    
    ledColor = strip.Color(0, 0, 255);
  }else{    
    ledColor = strip.Color(0, 255, 0);
  }
}
 
// LED 효과 출력 함수 
void showLedEffect() {
  for (int i = 0; i < 3; i++) {                            
    for (int j = 0; j < strip.numPixels(); j = j + 3) {    
      strip.setPixelColor(j + i, ledColor);                // LED 색상 출력
    }
    strip.show();
    delay(100);
    for (int j = 0; j < strip.numPixels(); j = j + 3) {
      strip.setPixelColor(j + i, 0);                       // 이전 LED 색상 초기화
    }
  }
}
 
 
// 센싱(미세먼지, 온/습도) 정보 전송 함수
void sendSensingData() {
  String data = String(dustugm3) + "," + String(temperature) + "," + String(humidity);
  physisWiFi.publish(SERIAL_NUMBER, PUB_TOPIC, data);       // MQTT 메시지 전송
}
 
// 온습도 측정 함수
void measureDHT() {
  humidity = (int)dht.readHumidity();                  // 습도 측정
  temperature = (int)dht.readTemperature();            // 온도 측정
 
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("DHT sensor error!");
    return;
  }
  Serial.print("DHT : (Temp) ");
  Serial.print(temperature);
  Serial.print("\t (Humi) ");
  Serial.println(humidity);
}
 
 
// 미세먼지 측정 함수
void measureDust() {
  // 미세먼지 센서(Grove-Dust Sensor) 측정 참조 - https://wiki.seeedstudio.com/Grove-Dust_Sensor/
  lowPulseOccupancy += pulseIn(DUST_PIN, LOW);
  if (millis() - dustStartTime >= sampletimeMS) {
    float ratio = lowPulseOccupancy / (sampletimeMS * 10.0);
    float concentration = 1.1 * pow(ratio, 3) - 3.8 * pow(ratio, 2) + 520 * ratio + 0.62;
    dustugm3 = (int)(concentration * 100 / 1300);
    Serial.print("Dust(ug/m3) : ");
    Serial.println(dustugm3);
    lowPulseOccupancy = 0;
    dustStartTime = millis();
  }
}
 cs

PHYSIs_Dust_Monitor.aia
0.12MB

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#include <PHYSIs_Master.h>            // Physis 전용 라이브러리 추가
 
#define C_PIN       2                 // 터치 센서 핀 번호
#define D_PIN       3
#define E_PIN       4
#define F_PIN       5
#define G_PIN       A0
#define A_PIN       A1
#define B_PIN       A2
#define C_H_PIN     A4
 
PHYSIs_BLE physisBLE;                 // Physis BLE 객체 선언
 
String oldData;                       // 기존 입력 정보 값
 
void setup() {
  Serial.begin(115200);
 
  if (!physisBLE.enable()) {                  // BLE 모듈 활성화 시도
    while (1) {
      delay(1000);                            // 모듈 활성화 실패 시, 다음 단계 진행 X
    }
  }
 
  Serial.print(F("# BLE Address : "));
  Serial.println(physisBLE.getAddress());     // Physis 메이커보드의 주소정보 호출 & 출력
 
  pinMode(C_PIN, INPUT);                      // 디지털 핀을 사용하는 터치 센서 핀 모드 설정
  pinMode(D_PIN, INPUT);
  pinMode(E_PIN, INPUT);
  pinMode(F_PIN, INPUT);
}
 
void loop() {
  inputReader();                              // 터치 입력 검출 함수 호출
  delay(50);
}
 
 
void inputReader() {
  // 터치 센서의 각각의 입력 상태를 확인
  bool c = digitalRead(C_PIN);                    
  bool d = digitalRead(D_PIN);
  bool e = digitalRead(E_PIN);
  bool f = digitalRead(F_PIN);
  bool g = analogRead(G_PIN) == 1023;
  bool a = analogRead(A_PIN) == 1023;
  bool b = analogRead(B_PIN) == 1023;
  bool ch = analogRead(C_H_PIN) == 1023;
 
  // 현재 입력에 대한 상태 문자열 생성
  String newData = String(c) + String(d) + String(e) + String(f) +
                   String(g) + String(a) + String(b) + String(ch);
 
  // 상태정보와 기존 입력 정보를 비교
  if (!newData.equals(oldData)) {           // 입력상태가 변경되었을 경우,
    physisBLE.sendMessage(newData);             // 현재 상태를 블루투스 메시지로 전송.
    oldData = newData;                          // 기존 입력 정보 갱신.
  }
}
 cs

 

 

Physis_Piano.aia
0.35MB

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#include <DHT.h>                      // 온습도 센서 라이브러리 사용 
#include <Adafruit_NeoPixel.h>        // LED 링 라이브러리 사용
#include <U8glib.h>                   // OLED 디스플레이 라이브러리 사용
 
 
#define DHT_PIN         4             // 온습도 센서 연결 Pin 번호
#define DHT_TYPE        DHT22         // 온습도 센서 타입
#define LED_PIN         2             // LED Ring 연결 Pin 번호
#define CDS_PIN         A0            // 조도 센서 연결 Pin 번호
#define LVL_PIN         A1            // 수위(레벨) 센서 연결 Pin 번호
 
#define LED_PIXELs_SIZE   12          // LED Ring 픽셀 수
 
 
// 객체 선언
DHT dht(DHT_PIN, DHT_TYPE);
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(LED_PIXELs_SIZE, LED_PIN, NEO_GRB + NEO_KHZ800);
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST);
 
int lux;                                      // 조도 값
float humidity, temperature;                  // 온습도 값
int waterLvl;                                 // 수위 값
uint32_t levelColor;                          // 수위(레벨) 상태 색상
int ledStep = 0;
int oledStage = 0;
int measureCnt = 0;                           // 센서 측정 카운트
 
void setup() {
  Serial.begin(115200);
  dht.begin();                                // 온습도 센서 활성화
  pixels.begin();                             // LED 링 모듈 활성화
  u8g.begin();                                // OLED 모듈 활성화
 
  measureCnt = 10;
 
}
 
void loop() {
  if (measureCnt == 10) {
    setLevelColor();
    measureSensors();
    showOLED();
    measureCnt = 0;
  }
  measureCnt++;
  showDotLed();
  delay(200);
}
 
 
void showOLED() {
  u8g.firstPage();
  do {
    u8g.setFont(u8g_font_unifont);
    u8g.undoScale();
    switch (oledStage) {
      case 0:
        u8g.drawStr(8, 16, "Water Level(%)");                    // 텍스트(Title) 출력
        u8g.setScale2x2();                                        // 폰트 스케일 증가
        u8g.drawStr(24, 26, String(waterLvl).c_str());
        break;
      case 1:
        u8g.drawStr(8, 16, "Temperature('C)");                    // 텍스트(Title) 출력
        u8g.setScale2x2();                                        // 폰트 스케일 증가
        u8g.drawStr(24, 26, String(temperature).c_str());
        break;
      case 2:
        u8g.drawStr(8, 16, "Humidity(%)");                    // 텍스트(Title) 출력
        u8g.setScale2x2();                                        // 폰트 스케일 증가
        u8g.drawStr(24, 26, String(humidity).c_str());
        break;
      default:
        u8g.drawStr(8, 16, "Light(Lux)");                    // 텍스트(Title) 출력
        u8g.setScale2x2();                                        // 폰트 스케일 증가
        u8g.drawStr(24, 26, String(lux).c_str());
    }
  } while ( u8g.nextPage() );
  oledStage = oledStage == 3 ? 0 : oledStage + 1;
}
 
void measureSensors() {
  humidity = dht.readHumidity();                  // 습도 측정
  temperature = dht.readTemperature();            // 온도 측정
  lux = analogRead(CDS_PIN);                      // 조도 측정
}
 
void setLevelColor() {
  int val = analogRead(LVL_PIN);
  waterLvl = map(val, 0, 1023, 0, 100);
 
  levelColor = waterLvl < 20 ? pixels.Color(255, 0, 0) :
               (waterLvl < 80 ? pixels.Color(0, 255, 0) : pixels.Color(0, 0, 255));
}
 
void showDotLed() {
  for (int i = 0; i < pixels.numPixels(); i++) {
    if (i % 3 == ledStep)
      pixels.setPixelColor(i, levelColor);
    else
      pixels.setPixelColor(i, 0);
  }
  pixels.show();
  ledStep = ledStep == 2 ? 0 : ledStep + 1;
}
 cs

 

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#include <IRremote.h>                 // IR Remote (ver 2.5.0) 라이브러리 사용
#include <Servo.h>                    // Servo 라이브러리 사용
#include <U8glib.h>                   // OLED 디스플레이 라이브러리 사용
 
#define IR_PIN      2                 // IR 수신 센서 Pin 번호
#define SERVO_PIN   3                 // 서보모터 Pin 번호
#define BUZZER_PIN  4                 // 피에조 부저 Pin 번호
 
#define EFFECT_WAKE_UP    1           // 부저 효과음 - 입력 활성화
#define EFFECT_UNLOCK     2           // 잠금해제
#define EFFECT_KEY_ERR    3           // 키 오류
#define EFFECT_INPUT_NUM  4           // 키 입력
 
// 객체 선언
IRrecv ir(IR_PIN);
Servo servo;
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK | U8G_I2C_OPT_FAST);
 
// IR 리모컨 신호 리스트
long irSignalList[] = {
  16712445, 16728765, 16732845,
  16738455, 16750695, 16756815, 16724175, 16718055,
  16743045, 16716015, 16726215, 16734885, 16730805,
};
 
// IR 신호별 문자 리스트
String irCharList[] = {
  "OK", "*", "#",
  "1", "2", "3", "4", "5", "6", "7", "8", "9", "0",
};
 
 
bool isWakeup, isLock;            // 입력 활성화, 잠금 상태 값
String receiveStr = "";           // IR 신호 문자 값
String inputStr = "";             // 입력 키 값
long inputTime;                   // 입력 동작 시간
long timeOut = 1000 * 10;         // 입력 종료 시간
 
String unlockStr = "2021";        // 잠금해제 키 값
 
void setup() {
  Serial.begin(115200);
  u8g.begin();                                // OLED 모듈 활성화
  servo.attach(SERVO_PIN, 0, 180);            // 서보 모터 초기화
 
  pinMode(BUZZER_PIN, OUTPUT);                // 부저 모듈 Pin 모드 설정
 
  servo.write(0);                             // 서보모터 초기 각도 제어
  ir.enableIRIn();                            // IR 수신 활성화
 
  showLockState();                            // 잠금상태 OLED 출력
}
 
void loop() {
  irReceiver();                               // IR 신호 수신
  setLockStatus();                            // 잠금 상태 설정
 
  // 입력 가능 시간 체크
  if (isWakeup && millis() - inputTime > timeOut) {           // 입력이 활성화된 상태에서 지정 시간만큼 시간이 지나면
    isWakeup = false;                                               // 입력 비활성화 상태로 전환
    inputStr = "";                                                  // 입력 키 정보 초기화
    showLockState();                                                // 잠금상태 OLED 출력
  }
  delay(50);
}
 
// 잠금 상태 설정 함수
void setLockStatus() {
  if (receiveStr != "") {                                 // 지정된 문자에 대한 IR 신호 수신 시,
    if (receiveStr.equals("*")) {                                     // "*" 문자 수신 시, 입력 활성화 설정                        
      isWakeup = !isWakeup;                                                     // 입력 활성화 상태 변경
      inputStr = "";                                                            // 입력 키 정보 초기화              
      isWakeup ? showInputNumber() : showLockState();                           // 활성화 상태에 따른 OLED 정보 출력
      soundEffect(EFFECT_WAKE_UP);                                              // 입력 활성화 효과음 출력
      
    } else if (receiveStr.equals("#") && isLock) {                    // "#" 문자 수신 및 잠금해제 상태 시, 잠금 설정    
      servo.write(0);                                                           // 서보 모터 각도 초기화
      isLock = isWakeup = false;                                                // 잠금 상태, 입력 비활성화 상태 설정
      showLockState();                                                          // 잠금상태 OLED 출력
      
    } else if (isWakeup) {                                            // 입력 활성화 상태 시,
      inputStr += receiveStr;                                                   // 입력 키 정보에 IR 신호 문자 추가
      showInputNumber();                                                        // 입력 키 정보 OLED 출력
      soundEffect(EFFECT_INPUT_NUM);                                            // 키 입력 효과음 출력
      
      if (inputStr.length() == 4) {                                             // 4자리 키 정보 입력 시,
        delay(300);
        if (inputStr.equals(unlockStr)) {                                               // 잠금해제 키 정보와 일치할 경우,
          isLock = true;                                                                      // 잠금 해제 상태로 설정
          isWakeup = false;                                                                   // 입력 비활성화 설정
          soundEffect(EFFECT_UNLOCK);                                                         // 잠금 해제 효과음 출력
          showLockState();                                                                    // 잠금상태 OLED 출력
          servo.write(180);                                                                   // 서보 모터 각도 제어
          
        } else {                                                                        // 잠금해제 키 정보와 불일치할 경우,
          inputStr = "";                                                                      // 입력 키 정보 초기화
          soundEffect(EFFECT_KEY_ERR);                                                        // 키 오류 효과음 출력
          showInputNumber();                                                                  // 입력 키 정보 OLED 출력
        }
      }
    }
    inputTime = millis();                                    // 입력 시작 시간 초기화
    receiveStr = "";                                         // IR 수신 문자 초기화
  }
}
 
// 입력 키 정보 OLED 출력 함수
void showInputNumber() {
  u8g.firstPage();
  do {
    u8g.setFont(u8g_font_unifont);                            // 폰트 설정
    u8g.undoScale();                                          // 폰트 스케일 초기화
    u8g.drawStr(14, 16, "INPUT NUMBER");                      // 텍스트(Title) 출력
    u8g.setScale2x2();                                        // 폰트 스케일 증가
    String showNum = "";
    for (int i = 0; i < inputStr.length(); i++) {                         // 입력 키 문자열 길이만큼 반복문 실행
      showNum += i > 0 ? " " + String(inputStr[i]) : inputStr[i];             // 첫번째 문자 이후부터 공백 " " 추가 
    }
    u8g.drawStr(3, 26, showNum.c_str());                      // 입력 키 정보 출력
  } while ( u8g.nextPage() );
}
 
// 잠금 상태 정보 OLED 출력 함수
void showLockState() {
  u8g.firstPage();
  do {
 
    u8g.setFont(u8g_font_unifont);                            // 폰트 설정
    u8g.undoScale();                                          // 폰트 스케일 초기화
    u8g.drawStr(38, 16, "IR LOCK");                           // 텍스트(Title) 출력
    u8g.setScale2x2();                                        // 폰트 스케일 증가
    if (isLock) {                                             // 잠금 상태에 따른 텍스트 출력
      u8g.drawStr(16, 26, "OPEN");
    } else {
      u8g.drawStr(12, 26, "CLOSE");
    }
  } while ( u8g.nextPage() );
}
 
// IR 신호 수신 함수
void irReceiver() {
  decode_results res;
  if (ir.decode(&res))                                          // IR 신호 수신 시,
  {
    if (res.decode_type == 3 && res.bits == 32) {                        // 지정 IR 타입 및 크기(32Bit)의 신호 수신 시,
      int irPos = -1;
      for (int i = 0; i < sizeof(irSignalList); i++) {                   // IR 리모컨 신호 리스트에서 해당 신호의 인덱스 검출
        if (res.value == irSignalList[i]) {
          irPos = i;
          break;
        }
      }
      receiveStr = irPos != -1 ? irCharList[irPos] : "";                 // IR 신호 리스트의 인덱스 기준 IR 문자 호출 및 저장 
    }
    ir.resume();                                                // IR 신호 수신 대기
  }
}
 
// 피에조 부저 효과음 출력 함수
void soundEffect(int type) {
  if (type == EFFECT_WAKE_UP) {                                 // 입력 활성화 효과음
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
    delay(50);
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
  } else if (type == EFFECT_UNLOCK) {                           // 잠금 해제 효과음
    digitalWrite(BUZZER_PIN, HIGH);
    delay(300);
    digitalWrite(BUZZER_PIN, LOW);
    delay(50);
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
    delay(50);
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
  } else if (type == EFFECT_KEY_ERR) {                           // 입력 키 오류 효과음
    digitalWrite(BUZZER_PIN, HIGH);
    delay(500);
    digitalWrite(BUZZER_PIN, LOW);
  } else {                                                       // 키 입력 효과음
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
  }
}
 cs

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#define BTN_PIN         5               // 버튼 연결 Pin 번호
#define BTN_LED_PIN     4               // 버튼 LED 연결 Pin 번호
#define DIODE_LED_PIN   3               // 다이오드 LED 연결 Pin 번호
 
bool enable = false;
 
void setup() {
  Serial.begin(115200);
 
  pinMode(BTN_PIN, INPUT);              // 버튼 Pin을 입력모드로 설정
  pinMode(BTN_LED_PIN, OUTPUT);         // 버튼 LED Pin을 출력모드로 설정
  pinMode(DIODE_LED_PIN, OUTPUT);       // 다이오드 LED Pin을 출력모드로 설정
}
 
void loop() {
  if(digitalRead(BTN_PIN) == HIGH){                   // 버튼 클릭 상태일 때,
      while(digitalRead(BTN_PIN) == HIGH){                // 버튼이 클릭이 종료될 때까지 대기.
        delay(100);
      }
      enable = !enable;                               // 다이오드 LED 상태 전환 
  }
 
  digitalWrite(DIODE_LED_PIN, enable);                // 다이오드 LED 상태 설정  
  digitalWrite(BTN_LED_PIN, !enable);                 // 다이오드 LED 상태와 반대로 버튼 LED 상태 제어
  
  delay(50);
}
 cs

 

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#define CDS_PIN   A0                          // 조도 센서 아닐로그 Pin 번호
#define LED_PIN   3
 
float cdsValue;                              
 
void setup() {
  pinMode(LED_PIN, OUTPUT);       // LED 핀 모드 설정
}
 
void loop() {
  float cdsValue = analogRead(CDS_PIN);                 // 조도 센서 저항값(세기) 읽기
  int ledLux = map(cdsValue, 0, 1023, 255, 0);          // 조도 세기를 기준으로 LED 출력 세기(0~255) 환산
 
  analogWrite(LED_PIN, ledLux);                         // LED PWM 제어
  
  delay(1000);
}
 cs

 

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<주의> 아두이노 업로드를 위해 IDE에 <DHT.h>와 <LiquidCrystal_I2C.h> 라이브러리가 추가되어 있어야합니다.

 

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#include <DHT.h>                                  // DHT 라이브러리 추가
#include <LiquidCrystal_I2C.h>                    // I2C LCD 라이브러리 추가
 
#define DHT_PIN   2                               // 온습도 센서 연결 디지털 핀 번호
#define DHT_TYPE  DHT22                           // DHT 센서 종류
#define LCD_ADDR  0x3F                            // I2C LCD 주소 0x3F or 0x27
 
DHT dht(DHT_PIN, DHT_TYPE);                       // DHT 객체 선언
LiquidCrystal_I2C lcd(LCD_ADDR, 16, 2);           // 16 * 2 LCD 객체 선언
 
void setup() {
  dht.begin();                                // DHT 센서 활성화
  lcd.init();                                 // LCD 초기화
  lcd.backlight();                            // LCD 백라이트 ON
}
 
void loop() {
  float humidity = dht.readHumidity();            // 습도값 읽기 & 저장
  float temperature = dht.readTemperature();      // 온도값 읽기 & 저장
 
  lcd.setCursor(0, 0);        // x, y 커서 좌표 설정
  lcd.print("Temp:");         // 설정 좌표에 데이터 출력
  lcd.setCursor(0, 1);
  lcd.print("Humi:");
 
  lcd.setCursor(6, 0);        
  lcd.print(temperature);
  lcd.setCursor(6, 1);
  lcd.print(humidity);
 
  delay(2000);
}
 cs

 

 

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