// Define connections: CLK, DAT, RST // Change these pin numbers based on your wiring #define CLK 6 #define DAT 7 #define RST 8
// Create an instance of the VirtuabotixRTC class VirtuabotixRTC myRTC(rtcClockPin, rtcDataPin, rtcCsPin);
Real-time tracking is essential for Arduino projects like data loggers, automated feeding systems, and smart clocks. The virtuabotixrtc.h library provides a straightforward interface to control popular, budget-friendly Real-Time Clock (RTC) modules. 🛠️ Supported Hardware
Because virtuabotixrtc.h is often hosted outside the official Arduino Library Manager, manual installation is standard. virtuabotixrtc.h arduino library
function to initialize the clock with the current date and time. Automatic Time Update: updateTime()
Choose VirtuabotixRTC for its uncompromising simplicity and low resource usage when your project specifically uses a DS1302 RTC module. Choose RTClib for larger, more complex projects where flexibility and advanced features are a priority.
: No interrupt support. The library does not latch time on an external event (like a pulse-per-second input). For high-precision timestamping, consider a DS3231 with hardware interrupt. // Define connections: CLK, DAT, RST // Change
: RAM addresses 0–30 are valid. Address 31 is the trickle charger register, which the library does not natively expose but can be accessed via writeRegister(0x90 | 0x01, value) . The trickle charger is essential for supercapacitor-backed RTCs.
This occurs if you leave the setDS1302Time() command active in your code. Once the time is initially saved to the module's battery-backed memory, that line should be deleted or commented out.
// Create the myRTC object virtuabotixRTC myRTC(RST, DAT, CLK); function to initialize the clock with the current
The first step is to create an instance of the virtuabotixRTC object. In the global scope of your sketch, before the setup() function, you declare the object and specify the three Arduino pins connected to the DS1302 module's CLK, DAT, and RST pins.
void setup() Serial.begin(9600);
// Your wiring: (CLK, DAT, RST) virtuabotixRTC myRTC(4, 3, 2);
The Virtuabotix RTC library offers several features that make it a popular choice among Arduino users: