For the most part, the build is what you would expect: a 16×8 LED Matrix display driven by a TLC5920 LED driver, with an Arduino that uses a DS1307 RTC (real-time clock) with a coin cell battery ...

The other is a DS3231 real time clock with built-in crystal. A CR2032 keeps it all running. The main body, the outer ring, the bottom, ... an Arduino Nano runs 13 LEDs, ...

Dejan Nedelkovski has built a stylish DIY touchscreen Arduino music player and alarm clock which has been ... it uses the BY8001 MP3 Player module and for the alarm clock it uses the DS3231 Real ...

The Arduino binary clock shield has been made available via the Crowd Supply website with preorders starting from $33 and worldwide shipping available from $6, ... RTC model – DS3231 ...

Build Your Own Arduino-Based Laser Clock with a Salad Bowl, Laser Pointers, and Some Spare Time. Alan Henry. March 5, 2012 ...

Okay, I knew this would happen - one Arduino clock leads to another. Take a look at a clock that tells the time in terms of the first 192 digits of Pi, via a 32 x 8 LED matrix... Dubbed the Pi Day ...