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Gadget Freak

Gadget Freak Case #264: Drink Delivery Vehicle Inverted Pendulum

Doug Swift
10/17/2014  
18 comments
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oortiz
User Rank
Iron
Re: Build information
oortiz   10/22/2014 1:41:44 PM
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Totally agree. Without complete information this is just an interesting article to read instead of a real freak case to build and enjoy

rcheetham
User Rank
Iron
Build information
rcheetham   10/22/2014 12:07:05 PM
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I'd love to build this but in addition to the missing schematic the parts list is imcomplete, the build instructions also refer to a wiring diagram that is missing. We could also do with a PCB layout and a link to the code. A drawing for the complete machine would be nice too.

aryldo
User Rank
Iron
Documentation
aryldo   10/22/2014 10:15:54 AM
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If we have the schematics it should be easy to make one and upgrade the project.

Without it, no need for the part list or instructions.

mrdon
User Rank
Gold
Re: Need the schematic and code
mrdon   10/21/2014 5:56:08 PM
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rcheetham

I agree. This information would help tremendously for anyone wanting to build their own DDV-IP bot.

rcheetham
User Rank
Iron
Need the schematic and code
rcheetham   10/21/2014 4:29:45 PM
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We really need the schematic, code and drawings for this. The whole point is to be able to make these clever gadgets without having to do it from scratch.

mrdon
User Rank
Gold
Re: More info needed.
mrdon   10/21/2014 11:24:57 AM
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Nugent_56

I totally agree. Not quite sure what happen in the review process for this Gadget Freak but critical build information is missing. When will the full project documentation be made available for downloading?

mrdon
User Rank
Gold
Re: More info needed.
mrdon   10/21/2014 11:20:16 AM
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78RPM

I thought it was just me being somewhat saddend the circuit schematics and program code are missing from the Build Instructions. The point behind the Build Instructions is to allow the Design News community to review and possibly build the device for further hands-on exploration.

Elizabeth M
User Rank
Blogger
Re: I like it.
Elizabeth M   10/21/2014 7:29:59 AM
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I'm with you, Daniyal_Ali. When I first looked at the robot I thought for sure that thing would topple over with a couple of drinks on top but the video was really helpful in demonstrating stability and how it works.

armorris
User Rank
Platinum
Re: Way cool project
armorris   10/20/2014 4:24:14 PM
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Thanks, 78 RPM. Your explanation is much clearer and makes a lot of sense.

78RPM
User Rank
Gold
Re: Way cool project
78RPM   10/20/2014 3:47:31 PM
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Yes, amorris, you figured it out yourself.  That's a good question for a high school physics class.  It obviously took you only seconds to think it through.  The heavy battery is placed at the top, along with the drinks.  To put it simply, the rotation occurs around the center of mass. If the center of mass is near the top, very little angular momentum takes place.  If the battery were near the bottom, the motors would have to accelerate the mass of the battery which uses more power.

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