Alt-BEAM Archive

Message #12760



To: beam@corp.sgi.com
From: Justin JAF60@student.canterbury.ac.nz
Date: Thu, 30 Mar 2000 14:10:25 +1200
Subject: [alt-beam] Re: Active Feeler


This is cool.
I was wondering if it's not too much trouble e to take a picture of the
piezo and how the wire is attached - I've never played with these before
and I don't even know what the parts should look like or how they go
together.

Also, you say the feeler connects to the ground side, but the diagram
shows it on the other side - have you reversed the piezo?



12761 Wednesday, March 29, 2000 6:17 PM Spam! beam@sgiblab.sgi.com Mike Kulesza
>>Sometimes it is as simple as looking in the header of the email, the
>>detailed one that is. Sometimes >the true source can be find in their as
it
>>traces the complete route the >email takes. It might not work for
everyone.
>>Good luck.
>
>
>Taking the Cisco Networking Course, perhaps I should know this, but how do
>you get an email's header frames?
>
>
>
>____________________________________
>Mike Kulesza
>website: www.geocities.com/beambotix
>email: beambotix@hotmail.com
>ICQ#: 23333229
>
>______________________________________________________
>


12762 Thu, 30 Mar 2000 14:32:51 +1200 [alt-beam] Re: glider. A blimp is easier :-) beam@corp.sgi.com Justin >This maybe a 'cool' idea, but its also a bad idea.
>An automated R/C aircraft falls under the FAA rules if operating out of the
>pilot's' sight.

Methinks that having the necessary RC gear onboard but choosing not to
use probably gets around this, because this means the plane is never out
of your control - even if you're not controlling it :-)

Personally, I'd be more interested in making a miniature helium blimp
that navigates around the house, and it's a hell of a lot simpler to
build (you could even use an off-the-shelf photopopper circuit if you
really wanted to). "TPM" motors with tiny propellers put out a lot of
thrust for their minuscule weight. (Unfortunately not _more_ thrust than
their weight though, as far as I can tell...)

Problem - actual balloons are no good for lift - they deflate after a
while. The expelling pressure the rubber exerts on the gas is obviously
a big factor, but as well as escaping through the knot, I wonder if the
rubber itself might not be completely helium-proof. The first problem
(rubber trying to expel the gas) is easily solved by using a slack
bladder (reminds me of a Blackadder joke...), but if helium can actually
pass through rubber, what else can it pass through - what material
should we use that is helium proof?
(I don't want to have to refill the thing will helium every few weeks).

Waaay down the track, an outdoors unit that uses the sun to extract
hydrogen from rainwater could act as a refilling station for any leaks,
but that's not really plausible right now, and hydrogen gas has some
er... drawbacks... :-)



12763 Wednesday, March 29, 2000 6:32 AM Re: G.S.O.A.I.T. and possible RJP market. beam@corp.sgi.com Justin
if you where able to get the bot to remeber things and recall those memories
it could learn and get better times. you could have the outputs lead to the
memory along to the other parts then the memory lead to the in put of the
brain. try to motivate the bot by calling stupid and short it out for a
second when it gets slower times.

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