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/diy/ - Do It Yourself

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611055 No.611055 [Reply] [Original]

Is there any good motion tracking system that just measures between two different connected pieces? I need a mechanical arm that I can move and it needs to know where it is in realtime. I'm not sure if anything that requires to be too close to the joint would work and I'd prefer it to be wired so I don't have to recharge anything wireless.

>> No.611059

>>611055
I'm not sure I followed your question, but if I did then I suggest looking into rotary encoders.

>> No.611067

Faro Arm

http://www.youtube.com/watch?v=aAbFti298-c

>> No.611099
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611099

>>611055
Stepper motor?

>> No.611105

>>611059
>roatary encoders
I think these will work, is there a hinge version of this?

>>611067
They don't list the price of thoes on the site, which means it's way the fuck out of my price range

>> No.611156

>>611105
Other than prebuilt rotary encoders, you can built your own using opaque disc with hole (eg: Gray code disc).

Or you can use encoder from broken mouse, and count the light on/off to get the degrees.

>> No.611160

>>611105
you mean ball joint sensor? yes.
it's called a joy stick and it will work in two dimensions and allow 4D, 5D, whatever articulation and sensing you require if you chain them enough.

here's one made with lego http://www.elecbrick.com/joy/