void loop() myRTC.updateTime();
Enter the library. For many hobbyists, this is the go-to, lightweight solution for interfacing with the popular DS1302 and DS1307 RTC chips. In this comprehensive guide, we will dissect everything you need to know about this library—from installation and basic wiring to advanced coding and troubleshooting. What is the VirtuabotixRTC Library? The VirtuabotixRTC.h library is an Arduino library written to simplify communication with low-cost RTC modules, specifically the DS1302 (3-wire interface) and the DS1307 (I2C interface).
#include <virtuabotixRTC.h> virtuabotixRTC myRTC(7, 6, 5); int alarmPin = 13; // Built-in LED bool alarmTriggered = false; virtuabotixrtc.h arduino library
void loop() // Nothing to do here
void loop() // This is the most important line. It reads the RTC's current time // into the library's variables. myRTC.updateTime(); void loop() myRTC
// Reset alarm at midnight (optional) if (myRTC.hours == 0 && myRTC.minutes == 0 && myRTC.seconds == 0) alarmTriggered = false; digitalWrite(alarmPin, LOW);
delay(1000); // Update every second
// 4. Day of week (as number) Serial.print("Day of week (1-7): "); Serial.println(myRTC.dayofweek);