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	<id>https://onnocenter.or.id/wiki/index.php?action=history&amp;feed=atom&amp;title=Arduino%3A_DS1307_RTC_I2C_Clock_Serial</id>
	<title>Arduino: DS1307 RTC I2C Clock Serial - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://onnocenter.or.id/wiki/index.php?action=history&amp;feed=atom&amp;title=Arduino%3A_DS1307_RTC_I2C_Clock_Serial"/>
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	<updated>2026-04-08T02:21:00Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.35.4</generator>
	<entry>
		<id>https://onnocenter.or.id/wiki/index.php?title=Arduino:_DS1307_RTC_I2C_Clock_Serial&amp;diff=68279&amp;oldid=prev</id>
		<title>Onnowpurbo: Created page with &quot; #include &quot;Arduino.h&quot;  #include &quot;uRTCLib.h&quot;    // uRTCLib rtc;  uRTCLib rtc(0x68);    char daysOfTheWeek[7][12] = {&quot;Sunday&quot;, &quot;Monday&quot;, &quot;Tuesday&quot;, &quot;Wednesday&quot;, &quot;Thursday&quot;, &quot;Fri...&quot;</title>
		<link rel="alternate" type="text/html" href="https://onnocenter.or.id/wiki/index.php?title=Arduino:_DS1307_RTC_I2C_Clock_Serial&amp;diff=68279&amp;oldid=prev"/>
		<updated>2023-04-01T20:50:34Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot; #include &amp;quot;Arduino.h&amp;quot;  #include &amp;quot;uRTCLib.h&amp;quot;    // uRTCLib rtc;  uRTCLib rtc(0x68);    char daysOfTheWeek[7][12] = {&amp;quot;Sunday&amp;quot;, &amp;quot;Monday&amp;quot;, &amp;quot;Tuesday&amp;quot;, &amp;quot;Wednesday&amp;quot;, &amp;quot;Thursday&amp;quot;, &amp;quot;Fri...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt; #include &amp;quot;Arduino.h&amp;quot;&lt;br /&gt;
 #include &amp;quot;uRTCLib.h&amp;quot;&lt;br /&gt;
 &lt;br /&gt;
 // uRTCLib rtc;&lt;br /&gt;
 uRTCLib rtc(0x68);&lt;br /&gt;
 &lt;br /&gt;
 char daysOfTheWeek[7][12] = {&amp;quot;Sunday&amp;quot;, &amp;quot;Monday&amp;quot;, &amp;quot;Tuesday&amp;quot;, &amp;quot;Wednesday&amp;quot;, &amp;quot;Thursday&amp;quot;, &amp;quot;Friday&amp;quot;, &amp;quot;Saturday&amp;quot;};&lt;br /&gt;
 // char cMonth[12][12] = {&amp;quot;Jan&amp;quot;, &amp;quot;Feb&amp;quot;, &amp;quot;Mar&amp;quot;, &amp;quot;Apr&amp;quot;, &amp;quot;May&amp;quot;, &amp;quot;Jun&amp;quot;, &amp;quot;Jul&amp;quot;, &amp;quot;Aug&amp;quot;, &amp;quot;Sep&amp;quot;, &amp;quot;Oct&amp;quot;, &amp;quot;Nov&amp;quot;, &amp;quot;Dec&amp;quot; };&lt;br /&gt;
 &lt;br /&gt;
 void setup() {&lt;br /&gt;
   Serial.begin(9600);&lt;br /&gt;
   // delay(3000); // wait for console opening &lt;br /&gt;
 &lt;br /&gt;
   URTCLIB_WIRE.begin();  &lt;br /&gt;
 &lt;br /&gt;
   // Comment out below line once you set the date &amp;amp; time.&lt;br /&gt;
    // Following line sets the RTC with an explicit date &amp;amp; time&lt;br /&gt;
   // for example to set January 13 2022 at 12:56 you would call:&lt;br /&gt;
   // rtc.set(0, 56, 12, 5, 13, 1, 22);&lt;br /&gt;
   // rtc.set(second, minute, hour, dayOfWeek, dayOfMonth, month, year)&lt;br /&gt;
   // set day of week (1=Sunday, 7=Saturday)&lt;br /&gt;
 }&lt;br /&gt;
 &lt;br /&gt;
 void loop() {&lt;br /&gt;
   rtc.refresh();&lt;br /&gt;
 &lt;br /&gt;
   Serial.print(daysOfTheWeek[rtc.dayOfWeek()-1]);&lt;br /&gt;
   Serial.print(&amp;quot; , &amp;quot;);&lt;br /&gt;
   Serial.print(rtc.day());&lt;br /&gt;
   Serial.print(' ');&lt;br /&gt;
   Serial.print(rtc.month());&lt;br /&gt;
   // Serial.print(cMonth[rtc.month()-1]);&lt;br /&gt;
   Serial.print(' ');&lt;br /&gt;
   Serial.print(2000+rtc.year());&lt;br /&gt;
 &lt;br /&gt;
   print2digits(rtc.hour());&lt;br /&gt;
   Serial.print(':');&lt;br /&gt;
   print2digits(rtc.minute());&lt;br /&gt;
   Serial.print(':');&lt;br /&gt;
   print2digits(rtc.second());&lt;br /&gt;
   Serial.print('\n');&lt;br /&gt;
     &lt;br /&gt;
   delay(1000);&lt;br /&gt;
 }&lt;br /&gt;
 &lt;br /&gt;
 void print2digits(int number) {&lt;br /&gt;
   if (number &amp;gt;= 0 &amp;amp;&amp;amp; number &amp;lt; 10) {&lt;br /&gt;
     Serial.write('0');&lt;br /&gt;
   }&lt;br /&gt;
   Serial.print(number);&lt;br /&gt;
 }&lt;/div&gt;</summary>
		<author><name>Onnowpurbo</name></author>
	</entry>
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