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7 Dec 2010

This project is a meter clock that is styled like a VU meter. The two meters are attached to servo motors and are controlled by a PIC 18F2550. The box is build by y first making a form, then laminating thin sheets of wood. Complete project documentation can be found on the link below. [via]

Meter clock in wooden box – [Link]

5 Dec 2010

spritesmods.com built a clock display using thermochromic paint. This is a kind of paint that changes color when heated. He used this paint to paint some resistors and placed them in seven segment arrangement. When proper resistors are heated they form the digital numbers and the time is shown. The resistors are mounted on protoboard. When the resistors are dissipating around 500mW the corresponding segment is changing his color to light grey. When they are shut off they gradually fade to dark grey in 60 second.

Thermochromic paint clock – [Link]

27 Nov 2010

This project is a Nixie Clock using 4 tubes and common components. This clock is designed to be easy-to-build and it’s build using two boards one over the other. Clock works at voltages from 7.5V to about 14V and consumes around 200mA. The shield board has 4 RGB LEDs under the Nixies that can be turned off if you don’t like how it looks. It shows time, full date and temperature.

Nixie Clock with 4 tubes - [Link]

15 Nov 2010

This project is a clock able to display time on the CRT tube of an oscilloscope. It uses a PIC16F84A and four resistors configured to work like a 2bit R-2R DAC. Bruno Gavand used both timing and Y axis controls to display the numeric values on the scope screen. It also has two push buttons, one for hours and one for minutes configuration. [via]

PicOClock: PIC16F84A Oscilloscope clock – [Link]

2 Nov 2010

This project is a Real time clock shield for Arduino based on DS1307 realtime (RTC) integrated circuit. It is a fairly accurate clock that can keep time when not powered if you add a 3V battery. Data is transfered to microcontroller through I²C  bidirectional interface. It is connected to Arduino at pins 4 and 5. Check schematic on the link below.

Arduino DS1307 Real Time Clock Shield - [Link]

29 Oct 2010

This project is a Digital clock that is able to show time in both a LCD display and in LED display binary output. It also has a thermometer and a hygrometer able to show relative humidity and absolutely humidity. It is build around Microchip PIC16F917, a RealTimeClock Maxim DS1305 and Sensirion SHT11.

Digital & Binary clock with thermometer & hygrometer – [Link]

28 Oct 2010

This project is an alarm clock based on PIC16F877. Time keeping is done using the PIC’s timer0 interrupt and uses a 4×20 hd44780 compatible backlit LCD. It also has computer interface for synchronizing time with the web.

PIC16F877 Alarm clock - [Link]

16 Oct 2010

This project is a 16×2 LCD Clock based on ATTtiny2313 microcontroller. The time is kept using internal counters of the mcu using interrupts and has an accuracy of 1 second / 48 hours. The 16 bit counter of the AVR is set to overflow when a second had lapsed and thus measuring time. Project files can be downloaded here. [via]

Interrupt driven Clock using ATTtiny2313 - [Link]

28 Sep 2010

The National Physics Laboratory broadcasts a time signal, previously known as the Rugby clock but now called “Time from NPL.” Its most commonly known as the MSF signal due to it originally being identified in Morse code those letters. It is broadcast from Anthorn on 60kHz. Many commercial clocks use it to automatically set themselves.

I decided to convert a digital clock I bought into one set by the MSF signal. To make the project more interesting I decided to use the ATtiny2313 microcontroller with only 2k flash ROM and 128 bytes of RAM.

MSF Radio Time Clock - [Link]

27 Sep 2010

This project shows how to build a Digital clock with 32×8 LED matrix display based on ATmega168 microcontroller. It doesn’t use a RTC timer chip but timer interrupt triggered via external crystal at 32.678kHz. It allows generating exact 1sec intervals while AVR is running with internal system clock at 8MHz.

Digital clock with 32×8 LED matrix display - [Link]





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