Meter clock

This analog meter clock was built by [Len Bayles]. Its 3 meters are controlled by an AT89c2051. The circuit itself is very simple, and available on the site. The meters are powered from a DAC, with a quad amp in between to keep the meter from drawing too much current.

[via HackedGadgets]


  1. darkore says:

    The op-amps are not for keeping the meter from drawing too much current. On the contrary, they are there to provide enough current to the meters :)

  2. Tomasito says:
  3. walt says:


  4. HackerK says:

    This is WAY better looking than the multi-multimeter clock

  5. wifigod says:

    Those gauges remind me of the water/coolant level gauges in the control room of the reactor in The China Syndrome for some random reason. :-)

    Awesome hack!

  6. MoJo says:

    I think this guys site might be running on an Arduino…

  7. Vonskippy says:

    I think it’s TIME for HAD to stop with the oh so pedestrian clock “hacks”.

    They’re like a preschooler’s finger painting destined to hang on the family refrigerator.

  8. Tandon says:

    I love clocks, and I like these processor-based timepieces with interesting display devices.

    Keep it up.

  9. JB says:

    Cool clock… but does it still qualify as an “analog” clock? :P

  10. darkore says:

    Where can one get some meters like this?

  11. MoJo says:

    I quite like clocks too so I don’t mind these stories.

    Let’s face it, HAD can’t come up with cool high level hacks every day. 30 seconds looking at stuff like this is fine IMHO.

  12. strider_mt2k says:

    clocks are far better than haters

  13. Jake says:


    Lol, there does seem to be an obsession with useless clocks on this site. I am OK with that.

  14. Entropia says:

    I had this same idea over two years ago… Too bad I never got around to actually building it. My idea was to use an ATmega8, three 8-bit R2R DACs and three opamps. Just like this one.

    Here is my concept drawing from two years ago:

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