Subject:
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Re: SSClagorpion
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 21 Apr 2004 19:09:37 GMT
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Viewed:
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8355 times
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In lugnet.technic, Steve Hassenplug wrote:
> In lugnet.technic, Kevin L. Clague wrote:
> > In lugnet.technic, Steve Hassenplug wrote:
> > > In lugnet.technic, Kevin L. Clague wrote:
-snip-
Good Read.
> Do the legs need to be in a known position when switching from forward to
> backward? Or walking to turning? If so, we need sensors for that...
>
>
> Here's my current bill of materials:
> 1 Spybot, for IR direction control. This is mostly used as a sensor.
> 2 RCXs. I really haven't counted I/O, but two sounds like enough.
> 1 Battery box for compressor(s)
Question please.
The Spybot. That's for Directional Control.
Can you eloborate? I find this interesting.
I have conceived of possible contrivences, I'm interested in dicussing a method.
What would the Spybot's two motors trigger exactly?...to aid in directional
control?
It also needs to be in a line of sight with the RCX right?
What possible arrangement set ups could there be? /are best?
Where in/on the body is best?
What main factors need to be in play in order to utilize the Spybot?
ie, what main valve switches, sensors, motor/polarity/pnuematic reversors need
to be in alignment so the functions can be triggered or guided by the Spybot.
Does it come down to having the said controls ending up at the outputs of the
Sypbot? So ultimately, what should those master controls be?
Strictly in the sense of, oh wait, could it just be two simple sensors that send
feedback to the RCX to trigger the Master Gait seqences? For turning, and moving
about?
Thoughts?
> All those should be installed in the body of the beast. The Spybot/RCXs will
> need to communicate via IR. (there are other options, but we'll start there)
>
> The Spybot has two motors, but very limited sensor feedback. It would be good
> to use the Spybot motors to activate something like claws (open & close), where
> it won't be critical if they work exactly right.
Just a thought. Having them in the Claws would be cool. It does alter the scale.
Or more so, it sets a certain scale range minimum.
btw, I have three Spybots.
> We can use the Spybot remote
> to send it commands, like "follow me" or "attack anything in front of you"
Refer to above, like I was asking, if you'll indulge me, what would you say in
your opinion is/are these funtions. What do they exactly refer to in the actual
design set up?
> All the outputs from 1 RCX control movement. 1=Activate, 2=function
> (turn/straight), 3=forward/backward
>
> Two inputs would be used for sensing the edge-of-table. That's one input for
> each front leg. Each leg would have one sensor to detect when the leg is in
> it's "down" position, and one sensor to detect the ground. The two sensors in
> each leg can be connected together, to use one input. This could be two touch
> sensors, or a touch+light sensor combination.
>
> Two inputs can be used for the arm "feelers". Maybe several touch sensors per
> arm, or one rotation sensor for each.
>
>
> I'm not sure the RCXs really need to "know" when the SSClagorpion is actually
> walking. It can assume if it runs the motors, then the switches are set, and it
> is going.
>
> Beyond that, there is one motor to set the switch for curling the tail.
>
> That leaves 2 motor outputs, and 2 sensor inputs, for further expansion. Plus a
> touch sensor & light sensor built into the Spybot. The outputs from the second
> RCX can be connected to a gearbox, like Eric was suggesting, if we want to
> control more things, but I think that may just make things more complex than
> they need to be.
Hey, that's up to you. If we need strength, either multiplex the pistons force
output with levers or other fulcrum advantages or go mechanical an gear it. If
the digits of this project prove wimpy. I'll mechanize it.
Ain't nothin a couple of 8 and 40 tooth gears and motors with my homie; wormie
can't fix.
>
> It would be nice to mount the Spybot in the end of the tail, but it needs to
> communicate with the RCXs via IR, so I don't think that will work well, unless
> we connect a fiber-optic line. No, I don't think that will work, either.
>
>
> So, SSClagorpion will walk forward & backward, turn right & left, open & close
> two claws, and move it's tail. It can stay on a table/stage, detect when it
> bumps into something (going forward), follow the "controller" or be driven
> around like an RC car.
>
> Is that enough cool functionality?
>
> Steve
Excellent. Somebody dare us to add Clikits.
we da meign.
e
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Message has 1 Reply:
 | | Re: SSClagorpion
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| (...) Ok, so first of all, the Spybots, although limited, have one VERY cool feature. It's their IR capability. They have three IR sensors, so they can detect the direction of an IR signal from a controller, and/or another Spybot. So, if you set a (...) (20 years ago, 21-Apr-04, to lugnet.technic)
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Message is in Reply To:
| | Re: SSClagorpion
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| (...) Ok, so what's required for walking sideways? One switch (= single set of switches, all activated at once) to switch from forward/back/turn to side-to-side? I'm sure that comes to about 16 reverser switches, or something. :) I just happened to (...) (20 years ago, 19-Apr-04, to lugnet.technic)
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