A look at another item from the Matt collection of hardware, this one is an aviation style BCD thumb wheel encoder with a plunger action and incandescent illumination. Enjoy!
Fun With BCD Switches - https://www.youtube.com/watch?v=5_oUEVFN6Tw
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By Fran

13 thoughts on “Cool aircraft bcd encoders!”
  1. Avataaar/Circle Created with python_avatars Solarbird says:

    That looks very printable. I'm pretty confident you could totally print this.

  2. Avataaar/Circle Created with python_avatars Larry Scott says:

    So if it’s aviation then it’s probably 28v

  3. Avataaar/Circle Created with python_avatars Charles Kinzer says:

    If anybody wants to go a bit into the weeds on binary coding, "BCD" or 8. 4. 2. 1 isn't the only way. There is also 2, 4, 2, 1, "excess -3", and "8, 4, -2, -1". These are all called "self complementing" codes because of you if you complement any number the result is the 9's complement of the decimal number you are trying to represent.

  4. Avataaar/Circle Created with python_avatars Legofreak says:

    if the C pin doesn't connect to other pins you might try reading its capacitance.

  5. Avataaar/Circle Created with python_avatars GordieGii says:

    Maybe the C terminal connects to A while the button is pressed?

  6. Avataaar/Circle Created with python_avatars Arnaud MEURET says:

    I can’t believe it’s 12V. I think 7V looks already overloaded (glare and bleeding) and too bright compared to the LEDs.

  7. Avataaar/Circle Created with python_avatars Lake Nipissing says:

    Depending on application this came from…
    General aviation, typically 14 VDC
    Commercial aircraft, 28 VDC

  8. Avataaar/Circle Created with python_avatars Rob Mckennie says:

    I wonder if you could lend one of these to Ben krasnow to do some x-ray analysis to try to figure out if that last pin does anything

  9. Avataaar/Circle Created with python_avatars DadofScience says:

    Love these videos, Fran!

  10. Avataaar/Circle Created with python_avatars Jay Murphy says:

    Does Fran have a Discord?

  11. Avataaar/Circle Created with python_avatars Bill Lance says:

    I really wish that I had found you years ago. We have many similar interests and now begins the binge watching of your channel. Thank you.

  12. Avataaar/Circle Created with python_avatars B. Buster says:

    super cool

  13. Avataaar/Circle Created with python_avatars Salad Greens says:

    We really take LED's for granted. That much voltage for that little amount of light. Wild.

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