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G'Day
If you are willing to use 'non-pure Lego' parts, then Radio Shack has a
telephone cord 'detangler' that plugs into standard RJ-11 jacks, has 4
conductors, and 360 degree motion. Works rather well, esp. with some
contact enhancer for a cleaner (less 'noisy') electrical path.
Cheers!
Oliver
Jeffrey Hazen <jeffrey.hazen@northmill.net> wrote in message
news:01BF0C69.13794FC0@northmill1...
> I have been working (when I should have been Working) on two things which
> may be of general interest.
>
> The first is a rotary electrical coupling, which allows you to pass 4 wires
> through a rotary joint. I built the prototype tonight, and I think it
> works pretty well IMHO. I developed this because I wanted to be able to do
> a full 360 degree scan with a light sensor, without having to worry about
> winding up the motor and sensor wires. The design is probably limited to 4
> wires, due to the number of grooves on the standard Technic shaft, although
> you could have 8 if you didn't overload them. This would make the thing
> rather long, though.
<snip>
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Message is in Reply To:
| | Rotary electrical coupling
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| I have been working (when I should have been Working) on two things which may be of general interest. The first is a rotary electrical coupling, which allows you to pass 4 wires through a rotary joint. I built the prototype tonight, and I think it (...) (25 years ago, 2-Oct-99, to lugnet.robotics, lugnet.robotics.rcx)
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