Overview

This project uses the DS1307 Real Time Clock with an Arduino to display the time as a series of colored arcs.

With the new NeoPixel 60 Ring, we have a perfect display for presenting the time with RGB LEDs!

Hours are represented by red, minutes by green, seconds by blue. The arcs overlap and the colors mix. Minutes and seconds are each represented by a single green or blue LED, respectively. In the 12 hour version, a single red LED represent 24 minutes. The image above represents 3:48.

To build this project you will need:

If you are new to microcontrollers and Arduino, I would recommend starting out by building the circuit using the Arduino Uno and a breadboard.

If you are more familiar with Arduino, you can use a Trinket 5V and perfboard to build a more permanent electronics project.

NeoPixel 1/4 60 Ring - 5050 RGB LED w/ Integrated Drivers

PRODUCT ID: 1768
The biggest NeoPixel Ring yet! With four of these you can make a huge ring with 60 ultra bright smart LED NeoPixels are arranged in a circle with a 6.2" diameter. Each...
$9.95
IN STOCK

Adafruit DS1307 Real Time Clock Assembled Breakout Board

PRODUCT ID: 3296
This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for...
$7.50
IN STOCK

Adafruit Trinket M0 - for use with CircuitPython & Arduino IDE

PRODUCT ID: 3500
The Adafruit Trinket M0 may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATSAMD21, a little chip with a lot...
OUT OF STOCK
This guide was first published on Jul 01, 2014. It was last updated on Jul 01, 2014.
This page (Overview) was last updated on Jun 03, 2020.