clock – Page 3 – Dangerous Prototypes

Binary Burst clock ticks away the time with LEDs

The Binary Burst clock shows the time with LEDs: The clock uses 3 LEDs on each spire to count up to 5 in binary. The hours are displayed by the middle LED in RED (Its a Red/Blue bicolor, the others are just blue). Video, and links to the board and code repository are included in […]

DIY high precision clock synchronized with an atomic clock

Here is a DIY high precision clock that is synced to the DCF77 atomic clock long wave radio signal. The radio signal is broadcast form Frankfurt at 77.5 KHz and has a reach of about 2000 Km. DCF77 is the name of a german radio station on 77.5 KHz, which gives official time and date from […]

RTC and port expander for an Arduino nixie clock

Luca is designing a nixie clock that will be run from an Arduino. In the latest development he shows to to implement a real time clock source and a port expander to drive the nixies. In this third blog post, I’m going to show you the logical view of my Nixie clock and two of […]

Vetinari’s random-tick clock

Mick decided to build Vetinari’s clock based on WaitingForFridays project. Lord Vetinari, from the Discworld book series, has a clock in his office that is designed to make his visitors feel uncomfortable by having the second hand move at irregular intervals while still keeping exact time. The erratic second hand in Mick’s project is driven […]

Turning your Flash Destroyer into a clock

Ok, so you burned all the memory chips you had around, and now a nice 7-digit display is standing on your desktop just taking up space. This hack turns your unused Flash Destroyer into a clock using a real time clock IC and some spare logic. Via the forum.

7400 competition entry: Discrete logic POV clock

Matt’s entry in the Open 7400 Logic competition: Discrete logic POV clock. This persistence-of-vision clock was built entirely out of discrete logic chips. The design consists of three boards, a LED array and a drive motor. The digit board keeps the time while the display board controls the LEDs. The digit board Every second, a pulse increments the […]

7400 competition entry: New earth time (NET) digital clock

Our 7400 competition is heating up, Andrew form Ajax Electronics entered his New Earth Time digital clock into the competition. NET is a new way of telling time using earth’s rotation in degrees and minutes. 24 hours is 360 degrees, and each degree takes 60 NET minutes. The NET system allows for universal time with no time […]

7400 competition entry: RTC with gate IC

DolceVii posted his old clock made with only gate ICs for the 7400 competition. Via the contact form.

Pyro propeller clock POV

Chris from PyroElectro writes:After having seen so many propeller clock POV videos on Youtube, but no real description of how they work or how to build your own, I set out to make one and document how it was built. The Pyro Propeller Clock POV design criteria was short and sweet: be as simple as […]

DOTKLOK: Arduino based digital clock

DOTKLOK by Andrew O’Malley is an open-source, hackable, Arduino-based digital clock that displays a series of unique time-telling animations. The passing of time is depicted with numbers and abstract/geometric patterns, including animations inspired by classic video games such as Pong, Tetris, Pacman, and Space Invaders. An optional “random mode” changes the animation each day at […]

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