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Thread: My singing and dancing pumpkins

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    This space for rent. Al in Raleigh's Avatar
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    Default My singing and dancing pumpkins

    These were my singing and dancing pumpkins for 2010. It was done with a couple ServoDogs, a couple LOR controllers, and a ton of servos. It really is a lot more involved than it looks. The video sucks. The TASL folks get to see how it works at one of the meetings next year. It takes a couple people about an hour or two to set up.

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    Space rented from Al SWood's Avatar
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    Default Re: My singing and dancing pumpkins

    Man thats cool!
    Shannon Wood
    XLights 4 User with 40,000 channels and 60,000 lights.
    Facebook | Vimeo | Twitter

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    Site Admin robb3369's Avatar
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    Default Re: My singing and dancing pumpkins

    That is pretty damn cool! Are the servos mounted inside each pumpkin or mounted below? I was thinking of something similar, using mini-director and DC controllers for RGB lights and mounting the servos under each board to speed up prep time and allow for the pumpkins to be swapped out.
    Rob

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    This space for rent. Al in Raleigh's Avatar
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    Default Re: My singing and dancing pumpkins

    The servos are mounted on a turntable which is mounted to a board. The pumpkin is velcroed to the turntable top for ease in removal. If you notice carefully, the big pumpkin doesn't ever move. The big pumpkin's mass is too great for the servo. The inertia dampening properties of the servo were compromised after about 20 seconds of the big pumpkin moving.

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    Burn baby burn.... melwelch's Avatar
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    Default Re: My singing and dancing pumpkins

    Wow it looks great... I know you been working on it for a long time..

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    Site Admin robb3369's Avatar
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    Default Re: My singing and dancing pumpkins

    Velcro was good idea. Yea, I can imagine the large one having issues due to its size.
    Rob

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    Blowmold Elite Brad Caudill's Avatar
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    Default Re: My singing and dancing pumpkins

    You have been holding out on us Al! I expect a full demo at the next convention or atleast a slideshow on how you did this. That should be in a store display somewhere for thousands to see.

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    This space for rent. Al in Raleigh's Avatar
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    Default Re: My singing and dancing pumpkins

    Brad, I wanted to bring it to the convention, but I was so pressed for time. I promise to demo it at another convention. I did demo it for a TASL meeting a long while ago.

    You know Brad, I originally made the pumpkins for church and the kids were enthralled the first year. The next year I added the servos and the kids didn't pay it any attention. The parents thought it was fantastic but the same kids thought it was old news even though the pumpkins moved. So, I thought about mounting little squirt guns in them and squirting them when they were not looking. I would like that part. I did have the pumpkins in the front yard for Halloween night the second year (after the servos were added) and my neighbor's kids refused to come to the house because, "Pumpkins are not supposed to move."

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    Member davecw's Avatar
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    Default Re: My singing and dancing pumpkins

    I've been wanting to get into using servos in my display but just haven't made the jump yet. If you don't mind spending a little more money - there are big servos out there that I'm sure could move the big pumpkin. I use servos in my model airplane that are rated at 300 oz/in at just 6 volts. I thought about using them for bigger items like a waving santa wire-frame and the like.

    Take a look: http://www3.towerhobbies.com/cgi-bin/wti0093p?&C=MAG

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    This space for rent. Al in Raleigh's Avatar
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    Default Re: My singing and dancing pumpkins

    Hi Dave, the servo that I used was about 200 oz/in. The problem was stopping the mass not accelerating it. The big pumpkin needs a far heftier servo with some sort of external gearing. I looked into offset gear motors but shelved the entire project. I have something that I want to do similar to this that will require a massive amount of torque, so the project may be resumed soon. The problem with servos is the cost. I bought my servos from China directly and paid $20 for what was $50-$100 here.

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    New Member Tim Keenan's Avatar
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    Default Re: My singing and dancing pumpkins

    Al,

    I am new to the group. Would you mind sharing your video? Currently the link indicates it is a private video
    Thanks Tim in Denver

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    Havin fun ! kidcole's Avatar
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    Default Re: My singing and dancing pumpkins

    Quote Originally Posted by Tim Keenan View Post
    Al,

    I am new to the group. Would you mind sharing your video? Currently the link indicates it is a private video
    Thanks Tim in Denver
    Al has not posted on the site for well over a year.
    Thanks,

    Denny Cole
    https://www.facebook.com/groups/Cole...ristmasLights/

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