This Arduino Pro Mini powered clock syncs the current time via GPS, with a temperature compensated DS3231 RTC to keep it on the straight and narrow between satellite downlinks.

Synchronization a 100-Year-Old Clock with GPS For a while I was subscribed to Hackerboxes to force myself to learn how to use Ardunio and other easy-to-use embedded controllers.

With the cheap GPS module that arrived from aliexpress.com, I leaped into action and on the couple of weekend afternoons I built upon this GPS clock. Parts required: 01. Ublox GPS Module with antenna ...

GRA & AFCH : IN-12 Arduino : Nixie clock kit with NTP V2 While the build in GPS works well, it can be an issue within well insulated home to receive GPS/ DCF signals from the outside. Hence the wish ...

Alarm clocks are cheap and abundant, but they’re pretty boring. If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino.

We have feature quite a few cool clocks here at Geeky Gadgets, the latest one is the work of Andrew O'Malley, the DOTKLOK, which is an open source Arduino digital clock.

You have a timer and clock in just about every single device out there these days, but if you want to build you own, Instructables user GeraldF6 shows you how to do so with a Arduino.

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.