Arduino Uno; DS3231 RTC Module; LCD Display 16*2; Jumper Wire; 10K Preset; 3V coin cell (CR2032) Arduino Digital Clock Circuit Diagram . Connect SCL of RTC module to the Arduino A5; Connect SDA of RTC ...

Using an RTC module for Alarm-based projects may leverage this memory to save time. For example, we wish to wake up every day at 8:00 a.m. We may record this time value in EEPROM, and an alarm will ...

Connect the alarm pin (named SQW) of the DS3231 module to a pin on the Arduino that can be used for interrupts. Set an alarm on the DS3231 clock. Enable the Arduino's main loop to ignore the clock ...

Connect SCL on the RTC to SCL on the Arduino (Uno A5) Set the time on the RTC module (currently not implemented) After those steps, the leds should light up, representing in binary the current time in ...

$24 Winkel Arduino Compatible Board Includes WiFi, Bluetooth, 2.4 GHz RF, and an RTC (Crowdfunding) There are plenty of Arduino compatible boards with WiFi based on ESP8266 WiSoC going for around $5 ...