Analog Meter Clock

Discussion in 'General Electronics Chat' started by Glenn Holland, Apr 21, 2015.

  1. Glenn Holland

    Thread Starter Member

    Dec 26, 2014
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  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    That is a nice idea.

    It would be an interesting challenge to achieve the same function but without a micro-controller.
     
  3. AnalogKid

    Distinguished Member

    Aug 1, 2013
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    Totally agree. Back when I worked nights in a TV station, we were young, restless, and bored. It is possible to do the entire clock with nothing but a few LM324 quad opamps. Timebase oscillator, two 60-step integrators, one 12-step integrator, and three comparators. Large value polypropylene film capacitors were mil surplus.

    ak
     
  4. RichardO

    Well-Known Member

    May 4, 2013
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    A friend recently bought an old, large (maybe 6" wide) meter that happened to have scales with full scale ranges of 12 and 60! His intent is to do a clock that switches between minutes and hours on the single meter. It will be interesting to see how he indicates the hours versus minutes...
     
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