Alt-BEAM Archive

Message #11109



To: beam@sgiblab.sgi.com
From: "Richard Caudle" rwcaudle@hpamonon.com
Date: Tue, 29 Feb 2000 14:11:16 -0500
Subject: [alt-beam] Hey! What's this thingy?



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Hello all,

I took this chip out of an old feed-through scanner that I had laying aroun=
d. I can't find a datasheet at NEC for it. This is what it looks like on =
the bottom of the chip.

NEC Japan

D3734CY-1
9528KD011

Any of you old-timers out have a heads up on this? I'd like to use it as a=
form of vision.

Richard


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>
sontrary to all teh complaints, I found I actualy liked the mouse! Haha!
Me and the other dozen round mouse fans! :)

The surgery was poping off a blue plate and switching it with the red
ones from my mother's iMac (she's the one with the iMac).

I do run Windows under emulation though, but only occasionaly. I get a
decent speed though. I can do internet over it.


Anyway, I installed leg stops and am thinking of modifying the frame to
fit the major henry coils.

What I need to know though, is the strongest point of the magnetic field
in the center where the hole is, or is it over the wire area?

I want to know how far in I need to modify the frame.

Can the large (not solarbotics super large) solar panel run a bicore
directly? What's the current consumption of a HCT based bicore? Also,
how much current do the major henry coilds pull when powered at around 5
volts? Do I need to worry about back EMF if it's attached to a bicore? I
need it to reverse polarity, so I don't think a diode will work on the
circuit. I also don't want to drop voltage accross a resistor. I need
every little fraction of current. I'll probably have a small rechargabel
battery and a switch to select off, solar and battery opperation. I want
the solar panel to charge the battery in Off position (prefereably be
able to provide power as an assist, if at all possible during battery opperation).

Also, if I have an iron core for the electromagnet and the magnet on the
leg sticks to teh core, will reversing the polarity of the electromagnet
make it release the iron core, or will the magnetic bond between the
magnet and core be too much. if that's so, I could run the coils off
timed SEs and pulse it, that way, it'd only need to switch the leg
positons, and it'd hold it's position. Just another idea.


William Cox wrote:
>
> No! It looks like (gasp) an I MAC!
> -William
>
> BTW, what happened to your mouse? Did you perform surgery?

--


Richard Piotter The Richfiles Robotics & TI web page:
richfile@rconnect.com http://richfiles.calc.org

-- Make Money by Simply Surfing the Net or responding to E-Mail!!!
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11111 Tue, 29 Feb 2000 11:53:11 -0800 (PST) [alt-beam] Re: BEAMAnt circuit beam@sgiblab.sgi.com Darrell Johnson the beamant circuit turns both motors when one of the
touch sensors is tripped. then its' both on, both off,
both on, both off.
By lowering the the values of the resistors on the
beamant circuit (on the Mcore), you can make it appear
that the motors are both turning at the same time, but
in reality are pulsing quickly.. I believe this also
uses more current than one that pulses slower.. but I
could be wrong.

hope this helps,
darrell
--- "Phillip A. Ryals" wrote:
> ok, I followed the suggestions of some people on the
> list to go with the
> BEAMAnt circuit. It's confusing me though...
>
> Remember the thread about a photovore that can turn
> on both motors at once?
> I got the impression from some of the posts that the
> BEAMAnt cicuit does
> that. I've put it together though, and it runs one
> motor at a time. Is
> this right?


=====
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11112 Tue, 29 Feb 2000 14:00:42 -0600 [alt-beam] Re: numeric symbol for a .1pf ceramic cap beam@sgiblab.sgi.com Richard Piotter I was thinking 1pf. I spoke before (direct mail). The .1pf instructions
were from a web page that was hastily written, and does not follow the
standard procedure for turboing calculators. a .1pf cap isn't even
needed. As said before, wire and such can do the same task, for that
particular upgrade anyway.

Of course, Radio Shack don't sell .1pf caps. I was going bby memory of
the original upgrade plans, that calls for a 1 pf. Oops.

John Bachman wrote:
>
> At 10:42 AM 2/29/00 , you wrote:
> >Not avaliable my foot! Even Radio Shack sels them!!!
>
> The question was about a 0.1pf. That is an order of magnitude from 12pf or 15pf or 8pf.
>
> John

--


Richard Piotter The Richfiles Robotics & TI web page:
richfile@rconnect.com http://richfiles.calc.org

-- Make Money by Simply Surfing the Net or responding to E-Mail!!!
-- Click below!!!

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11113 Tue, 29 Feb 2000 14:02:46 -0600 [alt-beam] Re: mini walker beam@sgiblab.sgi.com Richard Piotter I meant magnet wire.


I'm going to see what kind of speaker wire is
> > avaliable localy and wind my own coil.

> Speaker wire (if you mean the wire used to connect speakers in a system)
> is not a good choice. The insulation takes up a lot of space. Ideal is
> enameled copper wire. You could try Radio Shack part # 278 - 1345 which
> gives you magnet wire in 3 gauges. The three sizes will allow you to
> experiment as dave says.
>
> Dilip


Richard Piotter The Richfiles Robotics & TI web page:
richfile@rconnect.com http://richfiles.calc.org

-- Make Money by Simply Surfing the Net or responding to E-Mail!!!
-- Click below!!!

http://www.alladvantage.com/go.asp?refid=ATL147
http://www.spedia.net/cgi-bin/dir/tz.cgi?run=show_svc&fl=8&vid=329630



11114 Tue, 29 Feb 2000 21:13:26 +0100 [alt-beam] Re: BEAMAnt circuit "Thomas Pilgaard" I am on the BEAM-ant cirquit as we are speaking and have a breadboarded
version running also. Your ant should run both motors at the same time
although if you are exposing only one side to light it should spin madly,
sometimes leaving the other not moving.

The ant should reverse the motor in the opposite side of the tactile sensor
you would be shortening out, reversing both motors if both sensors are
activated.

I've had several odd behaviours due to wrong connections in this cirquit. I
know it sucks to hear it, but I'm gonna say it anyway: check your
connections once more, and then again. If you haven't implemented the
tactiles on your breadboard, remember to ground pin 8 and 11. I forgot this
and had very odd behaviours.

One thing I'd like to point out is that IMHO using a 240 pretty much does
not make things easier. I am still struggling with my freeform
implementation which !will! fit beneath a 3733 Sunceram.

Cheers,

Thomas

> -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of Phillip A. Ryals
> Sent: Tuesday, February 29, 2000 10:02 PM
> To: BEAM List
> Subject: BEAMAnt circuit
>
>
> ok, I followed the suggestions of some people on the list to go with the
> BEAMAnt circuit. It's confusing me though...
>
> Remember the thread about a photovore that can turn on both
> motors at once?
> I got the impression from some of the posts that the BEAMAnt cicuit does
> that. I've put it together though, and it runs one motor at a time. Is
> this right?
>
> I'd like to find a fairly simple photovore circuit that uses the 240 or 14
> instead of individual transistors, mainly to make building it easier.
>
> I would appreciate any help.
>
> -phillip
>
>

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