This is a clock based on AVR Attiny2313 and works in 24 hour period. The time is displayed in the format “hh: mm: ss” on the alphanumeric display of size 16 x 2 (columns x rows) with driver HD44780.
Clock based on the chip AVR Attiny2313 – [Link]
An Alarm clock with 6 CD jewel boxes mounted as a cube, using 2 X 12 leds as display and the ringer made with a spinning motor and a glass. It is based on the ATtiny2313 micro from Atmel and the schematic diagram and the ‘C’ sources for the project are freely downloadable.
Roboclock. 2 x 12 leds alarm clock with glass ringer - [Link]
TeenyChron project is a clock that pulls time from a NTP server and uses a Garmin GPS module, a TS-7400 single board and two displays to display both UTC and local time. The heart of the system is a single board computer based upon an ARM processor running Linux. This project is well documented and you can find more information on the link below. [via]
TeenyChron: A Linux-based GPS-synched NTP server – [Link]
Kenneth Finnegan build a Bicolor LED clock based on MSP430. Project is developed using low cost Launchpad development platform from TEXAS Instruments. The MSP430 microcontroller is designed for low-power battery applications. The clock is controlled using a push button and a toggle switch. To display the time the LED is flashing in two different colors. Green flashes mean 10, yellow 5, and red 1, so the time 5:28 would be displayed as YELLOW [PAUSE] GREEN GREEN YELLOW RED RED RED (5:10+10+5+1+1+1) [via]
MSP430 Bicolor LED Clock – [Link]
“John Boxall” design and build this clock that has no digits. It displays time by blinking each digit in different color using an RGB led. Clock is being run from an ATmega328 Microcontroller and a DS1307 Real Time Clock. Check design files and schematics in the link below. [via]
For example, if the time is 12:45, the clock will blink red 12 times, then show blue for a second (think of this as the colon on a digital clock) then blink four times in green (for forty minutes), then blink three times in red for the individual minutes. If there is a zero, blink blue quicklyl.
RGB LED Blink Clock – [Link]
Lolo’s Alarm Clock is an alarm clock project that do a lot more than wakes you up. It is build around an Arduino board and is able to keep track of time, it measures temperature, humidity, dew point, light level, air quality, and sleep patterns and wakes you up the right moment. All data is logged wirelessly to a base station connected to the computer for latter analysis. Read more about this project on the link below. [via]
Lolo’s alarm clock tracks your sleep – [Link]
In this tutorial learn how to use Maxim DS1307 Real Time Clock with an ATMega168 AVR microcontroller to build your own multi featured LCD clock.
Using Maxim DS1307 Real Time Clock with Atmel AVR - [Link]
This should be one the the most hard to ready binary clocks as it uses different color to display hour, minutes and seconds in binary form. Check description on the link below to find out how to read it.
CoMBi Clock: RGB binary clock - [Link]
This project is a clock using AVR mcu and 7 segments displays to display hours and minutes. The clock is using a frequency divider as timer source. Schematic and source code is available on the link below.
AVR 7-segment clock - [Link]