พอดีตอนนี้ผมได้ทำโครงงานทำนาฬิกาจากบอร์ดอะอะครับแล้วผมเขียนโค๊ดลงไปแล้วมันเอเร่ออะครับโคดตัวนี้อะครับ[Spoil] คลิกเพื่อดูข้อความที่ซ่อนไว้#include <Wire.h>
#include <Time.h>
#include <DS1307RTC.h>
#include <TM1637Display.h>
#define CLK 2
#define DIO 3
unsigned long previousMillis;
bool showdot = false;
String SerialGET = "";
TM1637Display display(CLK, DIO);
void setup() {
  Serial.begin(9600);
}
void loop() {
  tmElements_t tm;
  if (!RTC.read(tm)) {
    tm.Hour = 0;
    tm.Minute = 0;
    tm.Second = 0;
    RTC.write(tm);
  }
  display.write(tm.Hour / 10, 0);
  display.write(tm.Hour % 10, 1);
  display.write(tm.Minute / 10, 2);
  display.write(tm.Minute % 10, 3);
  // Dot blink
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis > 500) {
    previousMillis = currentMillis;
    display.dotShow(showdot = !showdot);
  }
  while (Serial.available()) {
    char c = Serial.read();
    if (c == '\n') {
      int Hour, Min, Sec;
      if (sscanf(SerialGET.c_str(), "%d:%d:%d", &Hour, &Min, &Sec) == 3) {
        tm.Hour = Hour;
        tm.Minute = Min;
        tm.Second = Sec;
        RTC.write(tm);
        Serial.print("Set to ");
        Serial.print(Hour);
        Serial.print(":");
        Serial.print(Min);
        Serial.print(":");
        Serial.print(Sec);
        Serial.println();
      } else {
        Serial.println("Invalid format, Please enter Hour:Min:Sec");
      }
      SerialGET = "";
    }
    else
      SerialGET += c;
  }
}
แล้วมันก็เตือนตัวนี้อะครับ [Spoil] คลิกเพื่อดูข้อความที่ซ่อนไว้In file included from C:\Users\Administrator.XPGVFZN0PO9TS3M\Documents\Arduino\libraries\DigitalClockRTC1307\DigitalClockRTC1307.ino:3:0:

C:\Users\Administrator.XPGVFZN0PO9TS3M\Documents\Arduino\libraries\DS1307RTC/DS1307RTC.h:19:22: error: 'tmElements_t' has not been declared

     static bool read(tmElements_t &tm);

                      ^

C:\Users\Administrator.XPGVFZN0PO9TS3M\Documents\Arduino\libraries\DS1307RTC/DS1307RTC.h:20:23: error: 'tmElements_t' has not been declared

     static bool write(tmElements_t &tm);

                       ^

C:\Users\Administrator.XPGVFZN0PO9TS3M\Documents\Arduino\libraries\DigitalClockRTC1307\DigitalClockRTC1307.ino: In function 'void loop()':

DigitalClockRTC1307:15: error: 'tmElements_t' was not declared in this scope

   tmElements_t tm;

   ^

DigitalClockRTC1307:16: error: expected primary-expression before ')' token

   if (!RTC.read(tm)) {

                   ^

DigitalClockRTC1307:17: error: expected unqualified-id before '.' token

     tm.Hour = 0;

       ^

DigitalClockRTC1307:18: error: expected unqualified-id before '.' token

     tm.Minute = 0;

       ^

DigitalClockRTC1307:19: error: expected unqualified-id before '.' token

     tm.Second = 0;

       ^

DigitalClockRTC1307:20: error: expected primary-expression before ')' token

     RTC.write(tm);

                 ^

DigitalClockRTC1307:22: error: expected primary-expression before '.' token

   display.write(tm.Hour / 10, 0);

                   ^

DigitalClockRTC1307:23: error: expected primary-expression before '.' token

   display.write(tm.Hour % 10, 1);

                   ^

DigitalClockRTC1307:24: error: expected primary-expression before '.' token

   display.write(tm.Minute / 10, 2);

                   ^

DigitalClockRTC1307:25: error: expected primary-expression before '.' token

   display.write(tm.Minute % 10, 3);

                   ^

DigitalClockRTC1307:37: error: expected unqualified-id before '.' token

         tm.Hour = Hour;

           ^

DigitalClockRTC1307:38: error: expected unqualified-id before '.' token

         tm.Minute = Min;

           ^

DigitalClockRTC1307:39: error: expected unqualified-id before '.' token

         tm.Second = Sec;

           ^

DigitalClockRTC1307:40: error: expected primary-expression before ')' token

         RTC.write(tm);

                     ^

exit status 1
'tmElements_t' was not declared in this scope จะแก้ยังไงอะครับงานครูก็เร่งให้ส่งแล้วอะครับ