Subject:
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Re: RC control on Pneumatics, gearboxes and polarity switches
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 7 Aug 2000 18:36:32 GMT
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Viewed:
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1455 times
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On Mon, 7 Aug 2000 07:35:01 GMT, tnt@arnesson.nu (Tobbe Arnesson)
wrote:
> Hi!
>
> [WARNING: Not for the weak hearted LEGO purist ;) ]
>
> I'm planning to build a remote controlled LEGO lumber truck.
>
> What I'm planning to do is to controll all the functions via a remote
> controll (eg. Sanwa 5 channel RC equipment). By all the functions I
> mean:
>
> Move truck forward/revers
> Turn truck left/right
> Rise/lower support legs next to the crane
> Turn crane left/right
> Rise/lower crane
> Bend crane
> Rotate claw
> Open/close claw
>
> The servos is only allowed to move switches and a steering knob. Just
> like if some person would be using the truck.
Okay! Are you planning on renting a garage for it?:)
I can't see a solution to the problem with only 5 controllers (servos
or whatever). But how about splitting the functions up, you need a
channel to Rise/lower support legs next to the crane and a channel to
switch to crane mode, which leaves you with three channels to drive
the thing. You need to build soem circuitry to handle the switching.
In crane mode you use all five channels for the various functions of
the crane, and the switch to drive mode should be done automatically
when you place the crane in its rests.
I would no go with pneumatics, they're difficult enough to control
when you're having direct control of the pneumatic switches, also
because that's exactly what they are . switches. With motors
micromotors and some easily built circuitry, you can achieve much
better control.
Regards.
John
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