128x64 LCD를 활용한 디지털 시계 및 온도계

하드웨어 구성품

아두이노 나노 R3, 10k옴 가변저항, 푸시버튼, W031 128x64 LCD, DS3231 RTC 리얼타임 클럭 모듈

회로 구성도

"이 포스팅은 쿠팡 파트너스 활동의 일환으로, 이에 따른 일정액의 수수료를 제공받습니다."

https://link.coupang.com/a/b2vSOT

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https://link.coupang.com/a/b2E2vk

TFT 디스플레이 1.3인치 IPS 풀컬러 LCD 모듈 - 액세서리 | 쿠팡

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아두이노 LCD1602 16x2 4핀 디스플레이 모듈/ Arduino LCD1602 Module - 액세서리 | 쿠팡

 

 

코딩 : 

#include <U8glib.h>
#include <DS3232RTC.h>
#include <Streaming.h>
#include <Time.h>
#include <Wire.h>

U8GLIB_ST7920_128X64_1X u8g(6, 5, 4 , 7); //Enable, RW, RS, RESET

int X2 = 0;
int Y2 = 0;
int X3 = 0;
int Y3 = 0;
float angulo = 0;
int posicao = 0;
int posicaoh = 0;
int temperatura =0;
int min_temp = 500;
int max_temp = -500;

int ScreenWith = 128;
int ScreenWithC = 96;
int ScreenHeight = 64;
int ScreenHeightC = 32;
#define botao 3

int estado_botao = 0;

char* dia_da_semana[]={
  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};

void tela_1()
{
  u8g.drawRFrame(0, 0, 128, 64, 3);
  u8g.setPrintPos(20, 30);
  u8g.print(temperatura);
  u8g.drawStr( 42, 30, "C");
  u8g.drawCircle(37, 34, 2);
  mostra_relogio_digital();
  fundo_relogio();
  desenha_ponteiro(hour()-1, 12.0, 10);
  desenha_ponteiro(minute()-5, 60.0, 19);
  desenha_ponteiro(second()-5, 60, 21);
}
void tela_2()
{
  u8g.drawRFrame(0, 0, 128, 64, 3);
  u8g.drawRFrame(68, 4, 55, 56, 2);
  mostra_relogio_digital();
  u8g.setFont(u8g_font_5x8);
  u8g.drawStr( 78, 35, "MIN");
  u8g.drawStr( 78, 53, "MAX");
  u8g.setFont(u8g_font_6x13);
  u8g.setPrintPos(25, 41);
  u8g.print(dia_da_semana[(weekday()-1)]);
  u8g.setPrintPos(83, 19);
  u8g.print(temperatura);
  u8g.drawStr( 105, 19, "C");
  u8g.drawCircle(100, 12, 2);
  u8g.setPrintPos(98, 36);
  u8g.print(min_temp);
  u8g.drawCircle(113, 29, 2);
  u8g.setPrintPos(98, 54);
  u8g.print(max_temp);
  u8g.drawCircle(113, 47, 2);
}

void desenha_ponteiro(float valor, float rotacao, int Radius)
{
  angulo = valor * 2.0 * 3.1415 / rotacao - 1,5707;
  X2 = ScreenWithC + Radius * cos(angulo);
  Y2 = ScreenHeightC + Radius * sin(angulo);
  u8g.drawLine(ScreenWithC, ScreenHeightC, X2, Y2);
}
void fundo_relogio()
{
  u8g.drawCircle(ScreenWithC, ScreenHeightC, 27);
  u8g.drawCircle(ScreenWithC, ScreenHeightC, 1);
  u8g.setFont(u8g_font_6x13);
  u8g.setFontPosTop();
  u8g.drawStr(90, 9, "12");
  u8g.drawStr(114, 25, "3");
  u8g.drawStr(94, 44, "6");
  u8g.drawStr(74, 25, "9");

  for(int traco_minuto = 0; traco_minuto<12; traco_minuto++)
  {
    angulo = traco_minuto / 12.0 * 2 * 3.1415;
    X2 = ScreenWithC + 25 * cos(angulo);
    Y2 = ScreenHeightC + 25 * sin(angulo);
    X3 = ScreenWithC + 25 * cos(angulo);
    Y3 = ScreenHeightC + 25 * sin(angulo);
    u8g.drawLine(X2, Y2, X3, Y3);
  }
}


void mostra_relogio_digital()
{
  u8g.setFont(u8g_font_5x8);
  u8g.setPrintPos(8, 55);
  u8g.print(day());
  u8g.drawStr( 19, 55, "/");
  u8g.setPrintPos(24, 55);
  u8g.print(month());
  u8g.drawStr( 35, 55, "/");
  u8g.setPrintPos(41, 55);
  u8g.print(year());
  u8g.drawRBox(3, 4, 62, 21,2);
  u8g.setColorIndex(0);
  u8g.setFont(u8g_font_fub17);
  u8g.drawStr(29,21,":");
  if (hour() < 10)
  {
    u8g.drawStr(3,23,"0");
    posicaoh = 16;
  }
  else posicaoh = 3;
  u8g.setPrintPos(posicaoh, 23);
  u8g.print(hour());
  if (minute() < 10)
  {
    u8g.drawStr(38,23,"0");
    posicao = 51;
  }
  else posicao = 38;
  u8g.setPrintPos(posicao ,23);
  u8g.print(minute());
  u8g.setColorIndex(1);
}
void setup()
{
  pinMode(3, INPUT_PULLUP);
  Serial.begin(9600);
  if ( u8g.getMode() == U8G_MODE_R3G3B2 )
    u8g.setColorIndex(255);     // white
  else if ( u8g.getMode() == U8G_MODE_GRAY2BIT )
    u8g.setColorIndex(3);         // max intensity
  else if ( u8g.getMode() == U8G_MODE_BW )
    u8g.setColorIndex(1);         // pixel on
  setSyncProvider(RTC.get);
  Serial << F("RTC Sync");
  if (timeStatus() != timeSet) Serial << F(" FAIL!");
  Serial << endl;
}

void loop()
{
  temperatura = RTC.temperature() / 4.;
  if (temperatura >= max_temp)
  {
    max_temp = temperatura;
  }
  if (temperatura <= min_temp)
  {
    min_temp = temperatura;
  }
  static time_t tLast;
  time_t t;
  tmElements_t tm;

  if (Serial.available() >= 12) {
    int y = Serial.parseInt();
    if (y >= 100 && y < 1000)
      Serial<<F("Erro: Ano deve ter dois ou quatro digitos!") <<endl;
    else {
      if (y >= 1000)
        tm.Year = CalendarYrToTm(y);
      else    //(y < 100)
      tm.Year = y2kYearToTm(y);
      tm.Month = Serial.parseInt();
      tm.Day = Serial.parseInt();
      tm.Hour = Serial.parseInt();
      tm.Minute = Serial.parseInt();
      tm.Second = Serial.parseInt();
      t = makeTime(tm);
      RTC.set(t);
      setTime(t);
      Serial << F("Horario modificado para: ");
      printDateTime(t);
      Serial << endl;
      while (Serial.available() > 0) Serial.read();
    }
  }
  t = now();
  if (t != tLast) {
    tLast = t;
    printDateTime(t);
    Serial << endl;
  }

  boolean valor_botao = digitalRead(3);
  if (valor_botao != 1)
  {
    while(digitalRead(3) != 1)
    {
      delay(100);
    }
    estado_botao = !estado_botao;
  }

  u8g.firstPage();
  do {
    if (estado_botao == 0)
    {
      tela_1();
    }
    if (estado_botao == 1)
    {
      tela_2();
    }
  }
  while( u8g.nextPage() );
  delay(10);
}

void printDateTime(time_t t)
{
  printI00(day(t), 0);
  Serial << monthShortStr(month(t)) << _DEC(year(t));
  Serial << ' ';
  printI00(hour(t), ':');
  printI00(minute(t), ':');
  printI00(second(t), ' ');
}

void printI00(int val, char delim)
{
  if (val < 10) Serial << '0';
  Serial << _DEC(val);
  if (delim > 0) Serial << delim;
  return;
}