Simon Inns created a secure USB time stamp device: [via]
This project implements a USB device which provides a real-time clock for the purpose of time-stamping events in an non-networked embedded computer environment. For embedded applications where a periodic time-stamp is required (such as entry-system logs, configuration audit logs, etc.) it is necessary to have a fairly accurate real-time clock (better than that typically provided by a PC’s motherboard) to generate time-stamps in logging and audit trails. Furthermore, it is preferable to have a method of confirming that the log/audit files have not been tampered with in anyway. The secure USB time-stamp device solves many of these issues in a very small form factor using minimal components .
Secure usb time stamp – [Link]
Symmetricom has rolled out what it bills as the world’s smallest and lowest-power atomic oscillator. The newest member of Symmetricom’s QUANTUM™ family of atomic oscillators, the SA.45s Chip Scale Atomic Clock (CSAC), provides the accuracy and stability of atomic clock technology with dramatically reduced size, weight and power. It is ideal for is ideal for portable applications requiring precise synchronisation and timekeeping, especially in environments where GPS reception is poor or impossible. [via]
Atomic clock oscillator module – [Link]
This project is a binary LED clock using logic chips and it gets timing from mains frequency. [via]
Binary clock using logic chips and mains frequency – [Link]
A circuit made for displaying the time using 7 segment display (for decimal display) and LEDs (for binary display). I used an Atmega16 microcontroller and shift registers in the schematic. For more details contact me.
Binary and Decimal Clock - [Link]
Oscar Gonzalez from BricoGeek has build a nice clock using 7 segment displays and LED matrix. The clock uses and Arduino MEGA with a Real time clock module and an SHT15 board from SFE. Six digits 10 cm tall shows the current hour and date. 4 LED display matrix are used to show temperature, humidity and an RSS feed from the Internet. [via]
A cool clock made of marble – [Link]
Nick Hall builds a LED Pong clock, project files and source code is included. [via]
This project uses the classic video game Pong to tell the time. The 2 players automatically win and lose so their scores reflect the hours and minutes. The clock can also show the time written in words, or with large or small digits. Two buttons allow you to set the time and change the clock mode via a menu screen. The project uses 2 LED matrix panels from Sure Electronics, an Arduino, and a DS1307 clock chip.
LED Pong Clock – [Link]
This project shows how to build a GPS based clock. This clock is able to display accurate time received from a cheap GPS module. The clock is based on PIC18F1320 and uses MAX6951 LED display drivers.
Time Display unit for a GPS module – [Link]
This project is and alarm and wake up light based on MSP430 microcontroller by TI. This alarm clock displays time via 7 segment displays and there’s also a feature to adjust the color based on ambient room temperature. Check construction details on the link below. [via]
Msp430 Alarm and wake up light – [Link]
This project shows how to modify an old hard drive to make a LED clock based on PIC16F628 microcontroller to control clock operation. The clock is using 12 high power LEDs to display the clock hands. There is also a slot cut into upper drive platter and white tape on center drive platter provides a slot that when illuminated by the LEDs will represent a clock hand. Three micro switches set hours, minutes and seconds.
Hard Drive Clock - [Link]