Besides, when you first power up the DS1307, the default date and time will be 1/1/2000 0:00 which is not right. So to set the DS1307 to the current time, simply add the line RTC.adjust(DateTime(DATE, ...

The most popular RTC for the Arduino is the DS1307. However, it does have some drawbacks, the most notable of which is that its operating voltage is 5v, which means it cannot be used with 3.3v ...

“he new CANADUINO MEGA 2560 PLC 500 is based on an Arduino MEGA 2560 compatible computing module and comes in two versions for 100-240V AC line power (model 500 AC) or 12-24V DC power supply ...