Electronic, battery-less dice


Dhananjaygadre writes –

A Microcontroller, AVR Tiny13 based electronic dice, that does not use any battery or any normal power source. Instead it derives its power from a voltage generator based on the Faraday principle using a coil wound over a tube and a magnet inside the tube. To use the dice, just shake the circuit a few times and it produces a random number between 1 and 6 and displays it on the LEDs.

12 thoughts on “Electronic, battery-less dice

  1. saehn says:

    ZOMG it’s a bomb!!!

    Sorry, just can’t get over that.

  2. dragonphyre says:

    are you from Boston?

  3. Personman says:

    What…… No link to instructions?

  4. paulsw says:

    That’s a very funny and very creative project. I love how it rattles too, duplicating some of the tactile experience of shaking real dice.

  5. acidrain69 says:

    Excellent! And it mimics the action of shaking dice too. For the sequel, may I suggest a 2-dice model? Would a 7-segment LED work (the ones shaped like an 8 that can display 0-9)? You might be able to get 2 of those side by side, turned 90 degrees in the end of a slightly longer tube, with the micro on the other side (maybe sandwich some breadboard)

  6. dvgadre says:

    Thanks everyone.

    dragonphyre: I am from New Delhi, but if you go to SETC Fablab in Boston, the folks there can help you to build this. Ed Baafi is putting this and other related projects in kit form: http://mod-kit.com/make

    I am trying to find a publisher to print this project as an article. Perhaps Make?

    The Faraday generator can easily handle current for two 7-segment displays. Perhaps I will build and post that too in the near future.

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