Virtuabotixrtch Arduino Library Instant

Use VirtuabotixRTC for 90% of hobbyist projects. Switch to RTClib only if you need alarms, temperature sensing, or powermanagement features. Conclusion The VirtuabotixRTC Arduino Library is a testament to the principle that good tools should be simple. By hiding the complexity of I2C and BCD conversion behind seven intuitive functions, it empowers beginners to add reliable timekeeping to their projects in under 10 lines of code.

void setup() Serial.begin(9600); lcd.init(); lcd.backlight(); virtuabotixrtch arduino library

| RTC Module Pin | Arduino Uno/Nano | Arduino Mega 2560 | ESP8266 (NodeMCU) | | :------------ | :--------------- | :---------------- | :---------------- | | | 5V | 5V | 3.3V | | GND | GND | GND | GND | | SCL | A5 | 21 | D1 (GPIO5) | | SDA | A4 | 20 | D2 (GPIO4) | Use VirtuabotixRTC for 90% of hobbyist projects

Note: The Virtuabotix library automatically uses the Wire library under the hood, so you don't need to define pins unless using software I2C. By hiding the complexity of I2C and BCD

Note: For heavy timestamp math, consider switching to RTClib. On tiny chips without hardware I2C, you can use any two digital pins: