LEGO robot lays dominoes not eggs

[Mattias] brings the awesome once more with his LEGO robot that sets up dominoes. You’ll remember his work from the wooden keyboard case and the mechanical binary adder. This time around he’s still exercising those woodworking skills by making his own domino tiles, but it’s the robot that makes this interesting. In the must-see video after the break the device lays perfectly straight, perfectly spaced dominoes just begging to be upset by a spoiled toddler. The robot is nothing more than handful of LEGO parts powered by a tape deck motor. The parts may be meager, but there’s an abundance of ingenuity tied up in the design.

[Thanks Sion via The Awesomer]


  1. monkeyslayer56 says:

    step 2 now should be to make it be able to lay in different patterns and a larger storage capacity :D

  2. jan says:

    man thats awesome

  3. anon1234 says:

    Add a uC and bluetooth and control it with wiimote/iphone/younameit

  4. andrew says:

    Nice writeup and build. Add a bigger hopper and use an IR sensor to find the table edge and turn automatically. Then, let them loose in parks and cities.

    Next, build a robot that picks up the fallen legos and puts them in the first robot.

  5. Gilliam says:

    file this under great stuff lego can do that you never did when you had them.
    store them turned 90* and rotate them into place, like a P90 does :P
    setup for a second shelf of dominoes with a worm/reduction gearing to pull the shelf bottom out to reload, timed for when the last couple are about to leave the pusher.

  6. jay vaughan says:

    Yeah, if we had the retrieval-reloader built we would have the compiler needed to build a domino computer.

  7. jay vaughan says:

    BTW, I will build one of these with my nearly-3 year old when he’s ready. Great post Hackaday.

  8. supershwa says:


    Nice ingenuity with such simple everyday parts!

    Good job Mattias!

  9. medix says:

    Ah yes.. saw this the other day. Most definitely sweet. I would’ve killed to have one of these as a kid.. ;)

  10. That is so cool.

  11. Michael says:

    This has been done so many times before. For proof, search youtube. I, in fact, have one sitting right next to me right now.

  12. Davo says:

    op well done, it looks cool. Now all we need is a model that resets itself to the next row and can take massive numbers of dominos

  13. Alan Parekh says:

    This brings back memories. :)

    I remember getting something similar for Christmas one year. It stored the plastic pieces in a vertical magazine and dropped and aligned them as you slowly pulled the machine backwards. It was filled with a bunch of plastic gears that did everything (no electronics or motors).

  14. Cyphus says:

    Nice project, the only thing I can’t quite tell is how the domino supply automatically moves down the magazine. Any help?

  15. andrew says:

    Cyphus, he says it in the video. The friction from the table surface keeps the dominos toward the back of the machine as it rolls forward.

  16. Paul Potter says:


  17. wrightc01 says:

    it’s an automaton not a robot

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


Get every new post delivered to your Inbox.

Join 96,380 other followers