Virtuabotixrtc.h Arduino Library |verified| -

: Sets the clock. It takes parameters in the order: seconds, minutes, hours, dayofweek, dayofmonth, month, year .

In the loop() , you must call updateTime() before reading the variables. This pulls the latest data from the hardware chip into the software variables.

Mastering the VirtuabotixRTC Arduino Library: A Complete Guide to Real-Time Clocks

: Used once in the setup() function to initialize the clock. virtuabotixrtc.h arduino library

Important: The DS1302 requires a backup battery (usually a CR2032) to keep time when the Arduino is unplugged. Ensure the battery is installed and has a charge above 2.5V.

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#include // Creation of the RTC Object (CLK, DAT, RST) virtuabotixRTC myRTC(6, 7, 8); void setup() Serial.begin(9600); // Set time once: (sec, min, hr, day of week, day of month, month, year) // Day of week: 1=Sunday, 2=Monday, etc. myRTC.setDS1302Time(00, 30, 15, 2, 21, 4, 2026); void loop() // Update time variables from the chip myRTC.updateTime(); // Access individual elements Serial.print("Current Time: "); Serial.print(myRTC.hours); Serial.print(":"); Serial.print(myRTC.minutes); Serial.println(); delay(1000); Use code with caution. Copied to clipboard Problem with code for Arduino using an RTC - Programming : Sets the clock

void loop() // Nothing to do here

This is a rare but reported symptom where the RTC module appears to be counting time several times faster than normal. This typically indicates a hardware issue with the DS1302 module itself, such as a faulty crystal oscillator, rather than a software or library problem. If you experience this with different libraries, try replacing the RTC module.

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The official documentation for the VirtuabotixRTC library is minimal. However, the Arduino community has created a wealth of resources:

The VirtuabotixRTC library is designed for the DS1302 chip, a real-time clock/calendar from Maxim Integrated (formerly Dallas Semiconductor). This chip is a popular choice for several reasons:

void printDigits(int digits) if(digits < 10) Serial.print("0"); Serial.print(digits);