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Secret Box Project

Discussion in 'General Electronics Discussion' started by dreadnaught, Feb 26, 2013.

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  1. dreadnaught

    dreadnaught

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    Feb 26, 2013
    Hey, i was just getting into electronics, and i saw something really wanted to make, so i was wondering if i could get some help/ guidance on how to make it.

    I was trying to make this. I was having trouble figuring out what type of sensor i would you to determine which direction the box is facing. I think i have a basic plan, ill upload more, as i figure out more.

    Also any and all advice is welcomed.
     
  2. BobK

    BobK

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    1,688
    Jan 5, 2010
    If you watched the whole video you would know.

    If you are still puzzled, what do you think is the function of the brass ball in the cage?

    Bob
     
  3. dreadnaught

    dreadnaught

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    Feb 26, 2013
    I understand the basics of how the box works, for example the ball is used as a direction sensor, im just confused about how to replicate it.
     
  4. BobK

    BobK

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    Jan 5, 2010
    It looks to me like there are 4 contacts (brass bars) arranged such that a unique set of 2 of them are connected for each orientation of the cube.

    A more modern way would be to use a 3-axis accelerometer, like phones and tablets use.

    Bob
     
    Last edited: Feb 26, 2013
  5. dreadnaught

    dreadnaught

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    Feb 26, 2013
    Ok that was my question, i looked up some 3-axis accelerometer. Most of them seem to be made for audunio boards. I was hoping to use a low power micro-controller, so that i could minimize the power consumption, since it's meant to be sealed away. Any suggestions on what microcontroller or accelerometer to use?
     
  6. BobK

    BobK

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    Jan 5, 2010
    Personally I would use a PIC, probably a PIC12F1840, but that is because that is what I am experienced with. I have no experience with accelerometers. Sparkfun sells several of them either as chips or modules.

    Bob
     
  7. BobK

    BobK

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    Jan 5, 2010
    If you look on ebay for 3-axis accelerometer you find many little modules that say "for Arduino" but there is nothing making it specific to Arduiono. The simple ones just seem to have 5 pins, power, ground, and 3 analog outputs. You could use these on any micro that has at least 3 analog input channels.

    Bob
     
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