Alt-BEAM Archive
Message #12519
To: beam@sgiblab.sgi.com
From: "sebastiaan van Vliet" sebastiaan_van_v@hotmail.com
Date: Sat, 25 Mar 2000 14:04:59 PST
Subject: [alt-beam] Re: LEDs to indicate Bicore operation
>From: Flaming Headphones
>Reply-To: beam@sgiblab.sgi.com
>To: BEAM List
>Subject: LEDs to indicate Bicore operation
>Date: Fri, 24 Mar 2000 17:53:50 -0700
>
>Hi all,
>Just a quick question, where would I place LED's to indicate bicore
>operation on the almost complete walker circuit from Ian's BEAM-online?
Just solder two LED's together, long lead attached to the short lead of the
other. Make two of those couples and attach them where the motor goes
I know Mr. Miller's walker tutorial has info on indicator LEDs for the
>microcore, but I have no idea how to apply if to the bicore.
>
>TIA,
>Mike, AKA Flaming Headphones
>ICQ: 17940917
>E-mail: headphones99@iname.com
>
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12520 Sat, 25 Mar 2000 14:18:18 PST [alt-beam] flux beam@sgiblab.sgi.com "sebastiaan van Vliet"
how do I get the flux of my bicore? It messes up my movements!
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12521 Sat, 25 Mar 2000 14:19:55 PST [alt-beam] 2n2222 on H-bridge? beam@sgiblab.sgi.com "sebastiaan van Vliet"
Can I just exchange the 2n3904 with 2n2222 in my H-bridge? or should the
2n3906 also been replaced?
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12522 Sat, 25 Mar 2000 15:04:16 -0800 (PST) [alt-beam] Re: NPN or PNP? beam@sgiblab.sgi.com "Leonardo Boulton F."
--- Brian Boeckmann wrote:
> I was wondering if anyone could help me sort my transitors between
> PNP and NPN. They are all labeled differently.
> I have a simple voltage, current, resisitence meter. Thanks for your
> time.
>
The only way to be shure is to meassure the operation point (or
quiescent point), wich is the voltages and currents where the
transistor operate at different stages (saturation, active, etc.)....
However, it is a hardwork and you kneed lots of time for each
transistor. The easy way is to get the part number and look at the
specs on the internet... it is better don't you think.... Try web pages
like National.com; motorola.com or texas instruments webpage...
Leo
=====
I'm here... http://geocities.com/l.boulton
__________________________________________________
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12523 Sat, 25 Mar 2000 17:05:24 -0600 [alt-beam] Another SPSH Schematic "beam@sgiblab.sgi.com" Brad Guillot
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content-transfer-encoding: 7bit
Mabye this will help some people having trouble with this circuit
this version worked for me.
Good luck,
Brad
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12524 Sun, 26 Mar 2000 11:55:51 +1200 [alt-beam] Motors and Gears "Andrew Hooper" Hi All,
In my never ending search for Motors and Gears It just so happend
that the father of one of my associates is about to start production
on small gear and motor set, the motor is rated a little high for most
of out uses but im sure the gear box will be usefull.
There are several types avalible, but the thing that got me was that
they WILL opperate well if you reverse the motor.
The size of these are 1.500" X 1.500" X 0.75"
Torque is around 1.5" Lbs max.
Ratio is 100:1
Website should be up and running with all the details by next week
and the gearbox is also sold without a motor :)
Will keep you all informed
Andrew
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