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Have your clock tell you the time in full written sentences by lighting up hidden words in a grid of random letters. The face can also be easily swapped once complete to give it almost any style or look you like. The Word Clock uses a Real Time Clock module to read the current time & toggle individual LEDs within an LED Matrix. Each individual LED corresponds to specific written sentence.

Full Step-by-Step Guide: Word Clock by DIY Machines


  • Arduino Compatible & Requires only a Single LED 8x8 Matrix.
  • Full Customizable Clock Face & Sentences.

Prerequisites & Dependencies


  1. Arduino Nano
  2. NeoPixel NeoMatrix 8x8 64 RGB LED
  3. Adafruit DS3231 Precision RTC Breakout

Software: You will need to install the following libraries:

  1. RTC Libraries: RTClib
  2. Daylight Saving RTC Library: DST_RTC
  3. Adafruit Core Graphics Library: Adafruit_GFX
  4. Adafruit NeoPixel Library: Adafruit_NeoPixel
  5. Adafruit_GFX-compatible Library for NeoPixel Grids: Adafruit_NeoMatrix

Learn how to Install Additional Arduino Libraries


Are you a programmer, engineer or designer who has a great idea for a new feature in the World Clock? Maybe you have a good idea for a bug fix? Feel free to grab the code, schematics & CAD files from Github and tinker with it. Contributor List

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