Alt-BEAM Archive
Message #11246
To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Wed, 1 Mar 2000 21:02:35 EST
Subject: [alt-beam] Sockets instead of PCB
Who here loves to dabble with PCB layout? I sure don't, i just plain think it
can be a nusiance to deal with at times, plus its a pain to replace those
polarized caps when you fry the circuit. heres what i did (this is just a
handy idea for anybody who doesn't enjoy PCB work or doesn't have the stuff,
but hasn't thought of this already). I'm usin the almost complete walker
schematic so if so you might need to alter some numbers when you use this.
Take 2 x 20 pin sockets and 2 x 18 pin sockets. use one 20pin socket and glue
an 18 pin to its side. then take and place your components, other than the
HCT240 IC, and put them all the way down the 18 pin socket, there should be
11 components but put in the ones in that will be easier to work with for
now. solder all the connections so they correspond with the circuit, like you
would do with a perf board. now, cut the second 18 pin socket in half, so you
have two seperate rows of nine, cut down one so you have six pins in a row.
glue this little guy to the other side of the 20 pin, now hook (+) and (-) to
two of those pins, and hook the 4 motor outputs to the other 4 pins. now take
the other row that you cut, and cut it down to about seven, this is where you
put your storage cap and resistor for the reverser part of the almost
complete walker. if you are usin a ALS245 motor driver, you can glue that in
place at the butt of all these sockets and solder that in accordingly. Once
you have all that in place, you'll have a nice compact "brain" for your
walker! this makes it easy to replace parts so you can experiment with other
values.
-Spencer
11247 Thu, 02 Mar 2000 02:33:38 GMT [alt-beam] beambotix update beam@sgiblab.sgi.com "Mike Kulesza" beambotix has been updated. You can view my bots in the "beambotix fleet"
section. Click on each thumbnail to see a larger version.
Send any news.
Send any of your robot pictures, with description, you name, and website.
www.geocities.com/beambotix
______________________________________________________
11248 Wed, 01 Mar 2000 20:41:38 -0600 [alt-beam] Re: Sockets instead of PCB beam@sgiblab.sgi.com Richard Piotter I usualy take a pair of 14 pin DIP sockets and use them to plug my
74HCT240s into them. I solder my components to the bottom. I have a tiny
Unicore that fits directly under the chip. I attach pins or sockets
depending on what I want to be able to plug into it. All freeformed.
Pretty simple!
Placing pin sockets next to each other is a very excelent idea as well!
sounds cool!
Also, has there been any thoughts to the single Nv/Nu boards??? That
seemingly dropped out of existence. I was realy hoping something would
happen with those!
BUDSCOTT@aol.com wrote:
>
> Who here loves to dabble with PCB layout? I sure don't, i just plain think it
> can be a nusiance to deal with at times, plus its a pain to replace those
> polarized caps when you fry the circuit. heres what i did (this is just a
> handy idea for anybody who doesn't enjoy PCB work or doesn't have the stuff,
> but hasn't thought of this already). I'm usin the almost complete walker
> schematic so if so you might need to alter some numbers when you use this.
> Take 2 x 20 pin sockets and 2 x 18 pin sockets. use one 20pin socket and glue
> an 18 pin to its side. then take and place your components, other than the
> HCT240 IC, and put them all the way down the 18 pin socket, there should be
> 11 components but put in the ones in that will be easier to work with for
> now. solder all the connections so they correspond with the circuit, like you
> would do with a perf board. now, cut the second 18 pin socket in half, so you
> have two seperate rows of nine, cut down one so you have six pins in a row.
> glue this little guy to the other side of the 20 pin, now hook (+) and (-) to
> two of those pins, and hook the 4 motor outputs to the other 4 pins. now take
> the other row that you cut, and cut it down to about seven, this is where you
> put your storage cap and resistor for the reverser part of the almost
> complete walker. if you are usin a ALS245 motor driver, you can glue that in
> place at the butt of all these sockets and solder that in accordingly. Once
> you have all that in place, you'll have a nice compact "brain" for your
> walker! this makes it easy to replace parts so you can experiment with other
> values.
>
> -Spencer
--
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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http://www.alladvantage.com/go.asp?refid=ATL147
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11249 Thu, 02 Mar 2000 14:22:52 +1100 [alt-beam] Re: Sockets instead of PCB beam@sgiblab.sgi.com Elmo
--------------B601EC5358C60406824E9C36
content-transfer-encoding: 7bit
I have done this for my PSH circuit (Check out the attached image). I just used a
chip socket that had a few extra pins than i needed for the 20pin chip. The caps
and resistors are only pushed in (but quite firmly) so if i need to change their
values i can just pull them out. All the circuit wiring is done underneath the chip
socket. If i stuff the circuit (and i did the first time i soldered it) i only have
to pull the chip out of the socket and grab a new socket to start again. You will
also notice the wires haning off (power and sensor input lines) have chip socket
legs on their ends so i can just plug the sensors or power lines into the main
circuit, very handy for changing sensor inputs without having to un-solder
anything.
Best circuit i have built yet!
Elmo
--------------B601EC5358C60406824E9C36
Attachment: Head.jpg
--------------B601EC5358C60406824E9C36--
11250 Wed, 1 Mar 2000 21:19:28 -0600 [alt-beam] Re: Free solar cells at what price? alt-beam@egroups.com Ben A Micklin Where are these available and at what price?
~ben~
On Sun, 27 Feb 2000 11:59:36 -0500 "Jim Taylor" writes:
> Hey, I just cracked open my eye contact cleaning kit, I guess as a
> promotional thing they are including little credit card sized
> calculator in
> their product. They are standard calc cells, only output 1.5 volts
> or so,
> however they are free (When you buy the product of course) The
> brand name
> is quick care. It can be found in most grocery stores.
> Just a heads up.
>
> |___|
> -------O()O-------
> James Taylor
> URL: http://fly.to/springmeadows
>
>
>
>
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>
>
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11251 Wed, 01 Mar 2000 19:48:48 -0800 [alt-beam] Re: Sockets instead of PCB alt-beam@eGroups.com "Paul Stimson" Thanks on the socket versus pcb board tips, seems the way to do it, i
especially like the ability to change out resistors and caps easily.
thanks again
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