The most popular RTC for the Arduino is the DS1307. However, it does have some drawbacks, the most notable of which is that its operating voltage is 5v, which means it cannot be used with 3.3v ...

The Smart Timer Relay Controller is an Arduino-based project designed to automate the control of an LED (or other electronic devices) based on specific hours of the day. By utilizing a Real-Time Clock ...

The device has a fixed I2C address of 0x51 (81) so only one RTC per I2C bus can be used. The I2C communication supports 0.9-5.0 V so any 3.3V MCU should be able to connect. Do not forget appropriate ...

A highly accurate clock made using Arduino, which displays even Temperatures. The clock blinks the colon as well while displaying the time. Even after a power cut the clock displays the current time ...

Posted in cnc hacks, Misc Hacks Tagged 1307 RTC, arcade machine, bluetooth, DHT22 humidity sensor, Nokia 5110 LCD display, PIC 18F2520 ...

Continue reading “Light Duty Timekeeping: Arduino Berlin Clock”→ Posted in Arduino Hacks, clock hacks Tagged 1307 RTC, arduino nano, Berlin clock, blinkenlights, clock, set theory, set ...