Binary clock

[Walter] sent in his version of a PIC binary clock. It’s a nice alternative If you don’t want one that runs off TTL logic, This one runs on a PIC 16F628 (Microchip is great for samples) and displays hours in 5 bits and minutes in 6. His blog also features a decent looking programmer, and he shows off his version of the Suunto dive computer interface that’s been around for quite a while.


  1. olliestyles says:

    first post again w00t

  2. dotmike says:

    enough with the binary clocks. as hack-o-riffic as it is… it’s old. death to all binary clocks.

  3. ed3 says:


  4. nickjohnson says:

    the ‘628 is overkill for this project; save money and use a smaller pic!

  5. steve says:

    @nickjohnson: agreed about the 628 in terms of cost; however, as our ever helpful mr. o’brien mentioned, you can get them in samples from parts suppliers. samples, i.e. free, including shipping, often in quantities >= 10! what’s better than free? …if you’ve not tried this, i highly, highly suggest this route for any hobbyist.

  6. Binome says:

    heh, my buddy did the same 2 days ago.

  7. Zencyde says:

    Slow day on Hackaday, eh?

  8. Jon says:

    I would like to look as it it your friend has made

  9. agent420 says:

    no offense to the project, but binary clocks are kind of old hat. it wouldn’t be any more technically adavnced, but i’d be more impressed with a less common numbering system like octal or some convoluted system like base 3 or 5…

  10. Good show ed3

  11. Adam Maras says:

    I like the analog binary clocks they showed somewhere in there… I may just have to build one!

  12. Walter says:

    I put the schematic online too.

    It costs (including 16f628 or 627 is also good) about 7 dollars in parts including 628.

    It is different from the commercial binary clocks (and thus original):
    will be shown as
    10000 010111

    Whereas on the commercial binclocks it is shown as
    00001 01010 00010 00011

    The commercial ones only teach you binary numbers from 0 to 9.
    This one teaches you binary numbers from 0 to 59

  13. Meico Tenkawa says:

    This could easly be done for the Hackaday design challange…

  14. andrew says:

    “analog binary clocks”…. almost sounds like an oxymoron! ;)

  15. steve says:

    I might actually do this one, or a modification of it. I’ve always wanted a binary clock that reads the time in true binary, (ie first bit representing am/pm, second bit representing after or before 6, third bit after/ or before 3, and so on… 8 LEDs would get you down to around 5 minutes accuracy, plenty enough for my purposes.

    Has anyone else ever though of time as a binary concept rather than the arbitrary 24x60x60?

    A single byte could represent that ~5 minute accurate time unit. We could call it a binute. :)

  16. grim factor says:

    I don’t mind if they show a different binary clock a day. It’s still ingenuity. If you don’t like it, why not build something better? I bet most of the people criticizing can’t even follow directions to make one if they had someone hold their hand the entire process.

  17. required says:


  18. OG Style says:

    Does anyone know where I can get the hex for this clock. I am kinda new to pics and I only know how to program a hex file to the chips.

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