We see so many clocks here at Hackaday, and among those we see our fair share of binary clocks. But to see one that at first sight looks as though it might be a commercial product when it is in fact a one-off project is something special. That’s just what [Tobi4sDE] has done though, with his desktop BCD binary LED clock.
The front panel is a black PCB on which sit the LEDs that form the binary display, and its back holds an ATMega328P microcontroller and DS3231 real-time clock. A smart desktop case is 3D-printed, and while the clock is USB-powered it features a CR2032 coin cell as a backup to hold the time while the USB is disconnected.
Unexpectedly he’s used a mini USB socket rather than the expected micro USB, but the rest of the clock is one we’d probably all have on our desks given the chance. We’d even go so far as to say we’d have this one as a kit if it were available.
Of course, regular readers will notice that this isn’t the only high-standard BCD timepiece you’ll have seen recently, though the other one was a wristwatch.
I’m sold. Where do I buy the kit?
Me too! I would buy this immediately!
Nice work. But I think I do prefer Mr David Watts “Binary Crap Clock Kit”, primarily because it’s built using CMOS logic chips, which makes for a more #Retro digital hardware based BCD clock design. :) https://www.tindie.com/products/mrdavidjwatts/binary-crap-clock-kit
The famous(?) KuDammUhr had the ingenious idea of adding color to make reading it easier.
https://kmio.de/seiten/elektronik/berlinuhr.jpg (1975 that was …)
Just to clarify, the image shows a “rebuild” on a photo with LEDs, but the clock as such actually worked in Berlin
Ha! finally a wise guy using the mini usb connector. just threw out a couple of broken micro-usb cables this morning…
A back up battery would be a fine addition to my Anelace LED BCD Clock
http://www.anelace.com/Classic.html
why use a quartz?