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Author Topic: hexapod dof  (Read 3090 times)

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Offline izuaTopic starter

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hexapod dof
« on: May 06, 2008, 05:38:35 PM »
At some point around 2:20 the front legs do something nice :)
But I don't understand how the servos are connected to the chassis. The builder was saying in comments that he used 18, so that's either 3 per leg, or some weird combination in the front legs (5?). So, how the heck can the legs rotate like that? What is the servo arrangment?

Anyway. This guy makes a cool sound when walking around (although via R/C)
[youtube]http://youtube.com/watch?v=vMSHBRI3skQ[/youtube]
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Offline Private Reid

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Re: hexapod dof
« Reply #1 on: May 07, 2008, 03:10:22 AM »
lol

funny creature...

it sound almost like a army marching...
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Offline izuaTopic starter

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Re: hexapod dof
« Reply #2 on: May 07, 2008, 10:48:32 AM »
Heh, yeah.
But still, how can the legs move like that, with only 3 servos?
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Offline Private Reid

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Re: hexapod dof
« Reply #3 on: May 08, 2008, 03:06:36 AM »
Only 3!

Man, i thought there was like 12!
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Offline izuaTopic starter

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Re: hexapod dof
« Reply #4 on: May 08, 2008, 01:57:08 PM »
2 will give you the stance (and leg liftup), while the other 1 rotates the leg on the chassis' plane (which allows actual movement)
The thing is, this guy uses 18 servos (6legs x 3 i guess), yet still has stance and perpendicular leg rotation.

How the heck is that done?  :-\
« Last Edit: May 08, 2008, 01:57:47 PM by izua »
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Re: hexapod dof
« Reply #5 on: May 14, 2008, 08:02:24 PM »
Yeap each leg has 3 servos. The 'hip' one rotates the leg left and right, and the other two bend the 'knee' and 'ankle'.

Not sure where that sound comes from . . . speakers?

Offline Private Reid

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Re: hexapod dof
« Reply #6 on: May 16, 2008, 06:09:53 PM »
i thought the sound was mechanical sound?
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