Introduction In the world of embedded electronics and DIY projects, keeping accurate time is a surprisingly difficult challenge. The Arduino’s internal clock (millis() or delay()) is notoriously inaccurate for long-term projects, drifting by several seconds per day. To solve this, makers turn to Real-Time Clock (RTC) modules. Among the most popular and affordable of these is the DS1307 or DS3231 chip, typically found on a breakout board with a coin cell battery. However, navigating the code to interface with these chips can be tricky. That’s where the VirtuabotixRTC Arduino Library comes in.
void setup() // Wake up Wire.begin(); myRTC.updateTime(); Serial.println(myRTC.minutes); // Enter deep sleep for 1 minute ESP.deepSleep(60e6); virtuabotixrtch arduino library
void setup() Serial.begin(9600); lcd.init(); lcd.backlight(); Introduction In the world of embedded electronics and
Note: The Virtuabotix library automatically uses the Wire library under the hood, so you don't need to define pins unless using software I2C. Among the most popular and affordable of these
void loop() // 1. Read the current time from the chip myRTC.updateTime();