This library is specifically designed for the chip (often sold in a module with a battery and crystal oscillator). Unlike the more common DS1307 (I2C) or DS3231, the DS1302 uses a 3-wire interface similar to SPI.
Because this library is often not found in the official Arduino Library Manager, it must be installed manually: Arduino Forum : Obtain the ZIP file from a reputable repository like the chrisfryer78 GitHub : In the Arduino IDE, go to Sketch > Include Library > Add .ZIP Library and select the downloaded file. : Look for examples under File > Examples > virtuabotixRTC to confirm successful installation. Arduino Project Hub Example Usage Snippet // Creation of the Real Time Clock Object // SCLK -> 6, I/O -> 7, CE -> 8 virtuabotixRTC myRTC( setup() { Serial.begin( virtuabotixrtch arduino library
/* Virtuabotix RTC DS1302 Example */
In the world of embedded electronics, keeping accurate time is surprisingly difficult. While your Arduino runs flawlessly at 16MHz, its internal clock is a poor timekeeper—drifting by seconds per minute. The standard solution is a Real-Time Clock (RTC) module. But while the ubiquitous DS1307 and DS3231 RTCs have excellent hardware, their software ecosystem is fragmented. This library is specifically designed for the chip
The Virtuabotix RTC Arduino Library offers several key features that make it a popular choice among Arduino developers: : Look for examples under File > Examples