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[Haris Andrianakis] just finished building this very clean-looking vacuum fluorescent display clock. It shows six digits using IV-11 tubes, and also has a half-dozen RGB LEDs to spice things up (check out the video after the break for an example). An ATmega168 drives the device, controlling the display and serving as a battery-backed real-time clock. As with [...]

Tags:  six-digit display clock real-time-clock vacuum-fluorescent-display alarm-clock hacks  

[Karl] needed a programmable real-time clock for one of his projects. He considered adding an RTC chip, LCD screen, and some buttons for use with a microcontroller. That’s not necessarily hard, but it takes time and can be considered a project in itself. Instead, he headed to the hardware store to look for a cheap [...]

Tags:  use hacking project karl real-time-clock ac-outlet microcontroller clock hacks  

The guys over at brainwagon just finished up ANGST, the Arduino n’ Gameduinio Satellite Tracker, a build that displays 160 different satellites in Earth orbit on any SVGA monitor. The build is of course based off an Arduino and Gameduino shield. A real-time clock is always needed for a satellite tracker, so a DS1307 RTC [...]

Tags:  arduino tracker satellite real-time-clock satellite-tracker earth-orbit android hacks  

[Frits] has been working on an solar panel heliostat (in Dutch, check out the translated page here). The heliostat uses a small PICAXE to control the motor, along with an DS1307 real-time clock to make sure the motors start at dawn. Instead of using optical encoders or magnetic sensors, the angle of the heliostat is [...]

Tags:  heliostat power panel frits real-time-clock optical-encoders magnetic-sensors solar hacks  

[Giorgos Lazaridis] just finished building a simple clock on a breadboard. It uses a common real time clock chip, the DS1307. This is less expensive that its full-featured older brother, the DS3232. The difference between the two is that the 1307 requires an external 32.768 kHz crystal and it is not temperature compensated. This means [...]

Tags:  clock simple chip real-time-clock clock-chip ds1307 hacks  

When notes stuck to the water heater failed [Ryan] decided to whip up “the world’s most expensive 240V relay” using a servo, a real time clock and of course an Arduino. All in an attempt to save a buck or two thanks to LA’s “Time-of-Use program”. Using a protoshield Ryan soldered up a RTC module [...]

Tags:  real-time-clock arduino water-heater classic hacks  

Like many electronics hobbyists, [Pete] found that he had an overwhelming desire to build a clock for himself. He didn’t want to stick a discrete real time clock IC into a box and call it a day, so he opted to construct his own around a microcontroller instead. After researching the specs on a few [...]

Tags:  building clock time pete real-time-clock overwhelming-desire microcontroller hacks  

This is a multifunction too for measuring radiation (translated). The measurements center around gas discharge tubes that react when ionizing particles pass through them. After reading about the counting circuit for the pair of tubes used in this handheld it’s easy to understand why these are tricky to calibrate. The handheld features a real-time clock [...]

Tags:  test gear radiation gas-discharge-tubes real-time-clock radiation-test tool hacks  

[Andrew] is showing off his latest creation, an LED matrix clock, which he is calling “DOTKLOK”. The clock is powered by an atmega328 micro controller with a real time clock module keeping the time. The display is made out of a grid of 8×8 LED matrices giving it a resolution of 24×16, and is all [...]

Tags:  led dotklok clock andrew real-time-clock matrix-clock clock-module arduino hacks  

[John Boxall] finds himself doing a fair amount of projects that require a realtime clock. He does fast and frequent prototyping, usually using the Freetronics twentyten which is an Arduino alternative that boasts a few features like a nice prototyping area, edge visible LEDs, and Mini USB. What is lacking, however, is a real-time clock. [...]

Tags:  clock twentyten freetronics marcus real-time-clock prototyping-area visible-leds arduino hacks  

The Equinox clock is made up of simple parts but a combination of fine design and precision make it a gem of a timepiece. The guts are made up of an Arduino, a DS1307 real time clock, twelve LED drivers, and sixty RGB LEDs. These combine with a capacitive touch interface to tell the time [...]

Tags:  equinox clock time real-time-clock touch-interface arduino hacks  

[Andrew] built this pong clock over the span of a couple of days. The PIC 18f2520 he used can serve as a real time clock with the addition of an external clock crystal. His project proves the usefulness of an oscilloscope as poor board layout caused interference in the crystal connections, something difficult to troubleshoot [...]

Tags:  clock pic pong andrew real-time-clock pong-clock external-clock hacks  

[Kenneth Finnegan] quenches our clock-a-day compulsion with his Arduino based binary timepiece. The clock uses a 5×7 LED matrix as a display and shows month, day, and time. He sourced a DS3232 real-time clock which automatically compensates for temperature to achieve very accurate time keeping. We like the super-cap circuit he added to keep the [...]

Tags:  clock binary time kenneth-finnegan real-time-clock accurate-time finnegan hacks