: Used once in the setup() function to initialize the clock.
While the library supports it, the DS1307 uses SDA/SCL pins (A4/A5 on Uno). However, the library name is historically tied to the DS1302.
Because virtuabotixrtc.h is often hosted outside the official Arduino Library Manager, manual installation is standard.
delay(60000); // Log every minute
void setup() Serial.begin(9600);
Operates on less than 300nA at 2.0V, making it highly energy efficient.
void loop() Time t = myRTC.getTime(); Date d = myRTC.getDate(); Serial.print(d.day); Serial.print('/'); Serial.print(d.month); Serial.print('/'); Serial.print(d.year); Serial.print(' '); Serial.print(t.hour); Serial.print(':'); Serial.print(t.minute); Serial.print(':'); Serial.println(t.second); delay(1000); virtuabotixrtc.h arduino library
To use the library, you define the object with the pins connected to your module. A common setup involves connecting to digital pins 6, 7, and 8. // Creation of the Real Time Clock Object (CLK, DAT, RST) virtuabotixRTC myRTC( setup() { Serial.begin(
Combine the RTC with a 16x2 I2C LCD for a stand-alone desk clock.
Setting and fetching time requires just a few intuitive function calls. : Used once in the setup() function to initialize the clock
// Check if current time matches alarm time if (!alarmTriggered && myRTC.hours == alarmHour && myRTC.minutes == alarmMinute && myRTC.seconds == 0)
An RTC module like the DS1302 solves this by using an external crystal oscillator and a backup coin-cell battery. The virtuabotixRTC library provides the specific communication protocol needed to talk to this hardware easily.
While the VirtuabotixRTC library excels at its core task, the Arduino ecosystem offers other robust options, particularly . Because virtuabotixrtc
The Arduino library is a popular, lightweight solution designed specifically for interfacing with the DS1302 Real-Time Clock (RTC) module. While Arduinos can track elapsed time using internal functions like millis() , they lack a built-in "wall clock" that persists through power cycles. This library allows makers to easily integrate date and time functionality into their projects, from automated home systems to simple digital clocks. Key Features and Capabilities
virtuabotixRTC myRTC(7, 6, 5); int tempPin = A0; File dataFile;