Ball Balance Machine


This is an impressive use of Arduino, two servos, a webcam and Processing to tilt a ball platform. I was pretty sure I saw a copy of Make: magazine under the platform…

In the Maker Shed



Arduino Duemilanove

What will you make with yours?

9 thoughts on “Ball Balance Machine

  1. vbnicolau says:

    It is like this one with a touchscreen as sensor:

  2. cyenobite2 says:

    I wonder if you could program repeating patterns into processing to get the ball to travel in different patterns (sine waves, diags, ovals, 8’s etc…)

  3. 0zimbra0 says:

    I’ve justed posted some more details about this, including the code, to:
    @cyenobite2 – yeah, you can program any pattern you want into it, and it wouldn’t take much to have it automatically respond to any real-world data

    1. John Park says:

      Thanks so much for posting the added details on your blog, this is a wonderful project!

  4. long nguyen says:

    CHRIS SMALLING: Another night on which keo ca cuoc bong da anh Smalling continued a redemption that has been mirrored at club level. Was unfortunate to be booked for a fine challenge with 15 minutes remaining, and dealt well with everything asked of him. There are still doubts about his distribution from the back (good teams will just close off the options and make him knock it long), but quite possibly England’s first-choice centre-back at keo ca cuoc bong da truc tuyennext year’s Euros.

  5. Thai Nguyen says:

    Thayden, you’re doing xem tỷ lệ cá cược bóng đá hôm nay exactly what you’re criticising other people for but just the other way round mate.

    Secondly, also, I think that it’s not that ca cuoc bong da ngoai hang anh everyone is jealous of Wayne Rooney, just that they don’t like him for a variety of reasons.

  6. nhan says:

    Make Sensible Bets of Amounts You Can Afford

    One of the dangers ca do bong da m88 inherent in any sort of gambling is for the gambler to overextend themselves. Player transfer betting is no different than any other type cách chơi cá cược bóng đá in this aspect. As long as the bettor becomes savvy about the process of betting, is aware of the odds of winning or losing a bet, and bets sensible amounts of money they should have few problems. It is usually when a bettor bets more than they can afford to lose and cannot stop themselves from betting, especially when losing, that they often run into problems.

    One of the most important things to remember when placing a bet on football transfers is that the bet will only be won if the transfer actually takes place during the transfer window. As long as rules are observed and the bettor is aware of how things work, he can enjoy the process and also be successful at it.

  7. nhan says:

    The word on Tuesday was that 20 different ti le keo da bong clubs want to take Manchester United striker James Wilson on loan when that particular window opens. Louis van Gaal has evidently decided that Wayne Rooney and Anthony Martial doth a strikeforce make.

    The Daily Mail say that Louis van Gaal was prepared to loan Wilson out with a view to a permanent move on Deadline Day, which seems like a blow to the young striker. Still, United changed their mind after letting Javier Hernandez and Adnan Januzaj leave.

    Wilson has played just 17 minutes of first-team football ty so ca cuoc bong da since January, and is thought to be pretty disillusioned with Old Trafford life. A successful move to the Championship would give him some vital minutes and goals. He has only scored four times at club level.

  8. nhan says:

    Bookies adjust Favourite & Underdog Odds to Public Expectations

    To reiterate: Falling odds for an outcome is a hướng dẫn chơi cá độ bóng đá clear indicator that this is a favourite. Warning! Dropping odds do not indicate that the statistical probability for the favourite winning the game is improving; purely the fact that the outcome is becoming more and more favoured by bettors. This is a betting fundamental, which many gamblers are totally unaware of.

    Falling odds mean bookmakers are effectively raising the price for the product! The product itself does not change in the slightest (i.e. betting on the favourite), but it becomes more expensive to buy. The bettor has to risk more money in order to win the same amount. In this case, you do not get ‘more for your money’, but considerably less!

    Let’s use a different example. A confectionery company launches a new chocolate bar, which becomes an instant success. Demand increases; the company naturally takes advantage of the situation by raising the price. You can certainly make the ti le bóng đá statement that if the price of the chocolate increases it is a ‘favourite’, but the product itself never changes – it’s still a 100g chocolate bar!

    The last word here is that since the books have to be ‘balanced’ (i.e. the payout of all three 1×2 bets combined needs to add up to around 100%), whilst the ‘prices’ for favourites are lowered to take advantage of the demand, on the opposite side, the odds for the underdogs rise.

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John Edgar Park likes to make things and tell people about it. He builds project for Adafruit Industries. You can find him at and twitter/IG @johnedgarpark

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