Nano Sumo robot takes on all comers

nano_sumo_bot

While most Sumo-style robots are fairly sizable, there is a subsection of the Sumo robot movement that focuses on making small robots. Really small robots.

[Patrick] wrote in to share his latest creation, a Nano Sumo robot measuring a scant 1 in. x 1 in. The Nano Sumo is operated by an ATMega 328 micro controller housed on a custom-built PCB. The board was designed to interface directly with the 1A Dual Motor Driver from SparkFun, which provides all of the PWM signaling to the motors for speed control and braking. A small 50mAh Li-poly battery is attached to the robot, which can be charged using 4 AA batteries via a custom charging circuit. The mechanical components of the bot were handled by his friend [Gary], which you can read about here.

As you can see in the video below, the bot does its job pretty well. It does seem like the object detection gets confused every once in awhile, but that can likely be remedied with a few software tweaks.

Check out his page for additional build videos, including the PCB construction and programming processes.

If you’re interested in learning more about Sumo bots, check out this slightly larger robot we covered a short while back.

Comments

  1. wosser says:

    Damn, that’s dinky!

    Very nice construction, looks pretty solid.

    Could this be done even smaller with a 8-pin PIC and a coin cell?

  2. Jack says:

    That’s simply adorable. It sure hates those boxes getting into its circle…

    “Why do they keep coming back?!”

  3. Gilliam V. says:

    Is it pushing with its little lithium battery pack on the front?
    Sumo-mini-bot mk2: “sumo ninja assassin” could have a little li-po piercing sword/lance.

  4. notmyfault2000 says:

    Just watching the video, I think the reason it has trouble sometimes is because the center of gravity is in just the wrong spot. If it were a little shorter or a little longer it would be more stable, so that when it accelerates it doesn’t pop a wheelie and therefore the circle detection sensors don’t misfire.

  5. Can you pit two against each other?

  6. florinzgtrst says:

    One of these little guys (or even smaller) would be awesome as a keychain toy.

  7. IJ Dee-Vo says:

    too sweet! Just don’t lose it!

  8. Scott says:

    This is rather cool, but I have two negative things to say.

    1. the video is 4 minutes too long.

    2. “Made on a Mac” graphic with hyperlink to apple.com/mac … why don’t you try to be a bit more of a douchebag?

    Otherwise I thought the robot was cool because of it’s size and how well it worked.
    Fuck those paper cubes.

  9. swighton says:

    @Scott

    I’m fairly certain the the “Made on a Mac” is placed automatically when using iWeb (apples web authoring software) – the same way the iPhone automatically signs emails “sent from my iPhone” so it probably wasn’t the pompous move that it appears.

  10. Annon says:

    @Swighton
    Apple does not automatically put sent from iPhone, its an option that everyone should know how to change.

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