The first rudimentary methods of telling time involved simple observations of the natural world, perhaps by wedging sticks in the ground and monitoring the movements of the shadows. This particular experiment would have evoked the most fundamental part of a sundial, the gnomon (pronounced nom-on), which is the component that casts the shadow. It’s easy […]
How did ancient civilizations use sundials to tell time? Read More »
Wind-up alarm clocks have been around a long time, but they are still fun to explore. For more information on clocks in general, please see the article entitled How Pendulum Clocks Work. Here is the clock we will be exploring today: Removing the winding knobs and the back of the clock reveals the inside of
The Clock of the Long Now, as it’s officially dubbed, is meant to be an artifact capable of connecting our generation with generations to come. Nobody can predict with any accuracy what the world will look like in 10,000 years. Because there are so many variables, Hillis and his team had to take into consideration
Its a digial clock which make use of AT89C4051 to work as a Real time clock. Figure 1 shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). As you can see there is not
The Network Time Protocol (NTP) has revolutionized the world. Suddenly one could have anywhere in the world accurate time and date. NTP is a simple UDP based protocol and can be implemented in a Microcontroller. Using the tuxgraphics ethernet board and a LCD display we build a nice clock which gets time and date via
The great adventure that is building clocks continues. Points of interest in this build is that it was the first chance I got to play with the dot matrix display I picked up over winter break, and it’s the first time I’ve soldered and used a surface mount package (albeit I soldered it to a
If your school, or kids school, or other location relies on a central master clock that is broken, you may have a use for this device. New master clocks are available of course, but school budgets are under extreme pressures, and it really is a satisfying project if you have the necessary skills. This master
Arduino-based master clock for schools using ATmega128 Read More »
Based on the Atmel ATtiny12L-4PI microcontroller -A real Time Clock/Calendar for less than US$1.50 in moderate quantity. This is the timekeeping test circuit. It includes a one-transistor circuit to switch in the 5V power supply when present and drop back to the 3v battery the rest of the time. That loop of blue wire-wrapping wire
Introduction: This is the hardware and source code for an Atmel ATmega48 based four digit Nixie Tube Clock. Description: This was my second Nixie clock project. I wanted something a little smaller / cheaper / simpler then my rather large B-7971 clock. I will post the design for that one of these days. Trying to
Nixie Clock with AVR using ATmega48 microcontroller Read More »
Previously called ” Corrupted HDD Evaluate under the heading “corrupted hard disks to evaluate the application, I mentioned a couple of hours on the web projects I had used it with emery hardisk hours now, but quite professional and all of the shared resources, shared project Circuit atmel ATMEGA 128 rtc ds1307 based on the time and is integrated with other active tda5410 dc
Atmel atmega128 clock ds1307 tda5410 hard disk using atmega128 microcontroller Read More »
