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 ...

Meanwhile perhaps it is time for the Arduino folks to re-appraise their documentation. The subject of entropy and generating random numbers is one that has appeared on these pages many times.

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...

The DIY word clock can display time by spelling it out as you expect, or can use the letters as a matrix in order to show the time in digital format. The LEDs on the word clock face can also be ...

Arduino Touchscreen Music Player, Alarm Clock (video) 10:25 am October 6, 2016 By Julian Horsey ...

Our project is infact an Arduino with Serially Interfaced MAX7219 Operates an 8X8 LED Matrix to display a heart pattern. The MAX7219 IC is a serial input/output common-cathode display driver that ...

Just when you thought you’ve seen every strange variation of clock there is to see, we find one based on an Arduino that tracks the phases of the moon.

Sick of telling time the old way? Spice up your time-telling time with the open-source, hackable and Arduino -based DOTKLOK. Basically, you can get a bunch of different ways to tell time.

One Arduino clock leads to another.Take a look at the Pi Day clock that tells the time in terms of the first 192 digits of Pi, via a 32 x 8 LED matrix ...

If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino. The alarm clock is made using a Arduino Mini and a TFT screen.