Re: [SeattleRobotics] Wish List [was Anti-static for classroom]
- Jim McBride wrote:
>6, not 9 cells.
> I ran into this problem one day at work. Then a coworker pointed out a
> really cheap solution. A square 9 volt battery is really 6 smaller round
> batteries housed together. IF YOU ARE CAREFUL, you can take a DEAD battery
> and peel off the outer metal casing. Taking care not to ruin the top
> connector. Once disassembled, you have yourself a free 9 volt connector.
> Once again, be careful. Only peel away the outer metal housing. Never
> puncture any battery, and do not attempt this on a battery with a charge.
> It might even be a good idea to short you "dead" battery with a resistor
> until it is truly dead.
But that seems like a whole lot of work for something you can buy a 6-pack of,
with wires already attached at Radio Shack for a buck or so.
- Ok, give me an address and I'll send you a box of random junk I dug up.
More will probably follow once I place some more orders. If you can't use
some of this maybe you can barter it or just throw it away.
2 small proto-boards
Bunch of 3,4,5,6 pin molex connectors
PIC programmer (no wall wart or cable included)
Bunch of random PIC microcontrollers
A couple of 9-volt battery connectors (thought I had more, but can't find
8 small stepper motors
A serial cable
A (defunct?) twin motor gearbox with 2 motors
A bunch of mice circuit boards (have optical encoders and switches that are
A bunch of cables that are miniDIN on one side, plug on the other.
> -----Original Message-----
> From: Susan M [mailto:slmccain@...]
> Sent: Sunday, January 02, 2005 6:09 PM
> To: SeattleRobotics@yahoogroups.com
> Subject: [SeattleRobotics] Wish List [was Anti-static for classroom]
> John M wrote:
> > If you throw up a wish list somewhere I think you'd be pleased with the
> > response.
> Hi, John,
> I wanted to start with "Dear Santa,". :)
> I find myself again overwhelmed with the generosity here.
> Thanks for asking. Any donations of equipment would definitely be
> tax deductible. We're supposed to have 501-c or e or whatever it is.
> I think that got held up at the lawyer's but it's definite we'll have it.
> If anyone has a yen to declutter and share, we would willingly accumulate
> here. :)
> I do have a local source of scrap 26gauge wire from the type used for
> network and telephone drops in buildings so we haven't had to buy wire.
> I guess if I were to make a general wish list this week, it would be
> for small mechanical stuff, connectors, cabling, lots of headers,
> axle couplers and standoffs, or things to make them.
> Some of my older kids are going to be trying to put together their own
> robots, so anything that would go toward a chassis/wheels/drivetrain would
> be welcome. Or pieces to make different sensors or connect them.
> I don't know how much of that is salvageable. Ribbon cabling? If any
> male/female connectors are there, then I could just solder the other ends
> of the wires.
> I'm going to need some serial extension cables I think, short. Or other
> extension cables. But it may be too expensive to ship that.
> I have this one cable my dh had salvaged in the past when he was
> rebuilding a microwave and I know I could use a good many of those
> of all sizes as well as the female ends for them, I had taken a picture:
> Or any other type of cable connectors, like those used for motors and
> sensors on the Mark III. That stuff really adds up.
> I think I'm going to quickly need some male barrel plug connectors,
> so I can interface our homemade low voltage bus strip to the
> controller boards for supply during class. I can't see buying more
> wall warts when we have this regulated bench supply?
> Oh, and battery connectors for 9v batteries, the little oval things?
> I need some headers to break out the signals from the microchip. I don't
> know what to call them. But so the sensors can be plugged in rather than
> I'm going to try to encourage larger chassis for our robots so we are less
> constrained by size limitations in our choice of parts. I'm trying to
> learn from the way the SRS workshop bot is built. Ours don't have to be
> elegant at this point, they just have to move and sense, lol.
> Angle brackets, things that could be used to mount line-following sensors
> down below the chassis, or mount other sensors on the robot, and screws
> and nuts.
> I've got two Big Trak motors here and have to figure out a way to
> make and mount some wheels on the white axles. I hope I don't break
> them while trying to figure this out. I guess I need to drill and use
> a set screw on that. So anything that could be used for axles now that
> I think of it.
> Oh! Buzzers. Things that are simple enough for me to figure out how to
> use. Anything you've outgrown but that would be usable by less picky
> And someone said they had some surplus LCD they'd bought on ebay
> so if you have something you bought cheap in lots and I could afford it
> I would welcome the opportunity to buy a few of something myself. I've
> been building an inventory that I can draw from and sell just a few pieces
> when we actually need them to the class.
> That's a general idea, best I can do at this point. It seems huge.
> Thanks very much, Susan
> Visit the SRS Website at http://www.seattlerobotics.org
> Yahoo! Groups Links
- I was wondering if we might want to pool a shipment together, i.e., several
people could fill up a box to ship. :) In my case, I need an address, too,
since I'm more in Portland than Seattle now.
------ Original Message ------
Received: Mon, 03 Jan 2005 04:14:53 PM PST
From: "John M" <john@...>
Subject: RE: [SeattleRobotics] Wish List [was Anti-static for classroom]
> Ok, give me an address and I'll send you a box of random junk I dug up.
- Fred, thanks so much, I will send my address offlist.
I think I'm missing some posts and I know a couple of mine disappeared,
probably due to a reboot here. Sorry!
9 volt battery
6 round batteries
At 02:04 PM 1/3/2005 -0800, you wrote:
>Jim McBride wrote:JIMc
> > I ran into this problem one day at work. Then a coworker pointed out a
> > really cheap solution. A square 9 volt battery is really 6 smaller round
> > batteries housed together. IF YOU ARE CAREFUL, you can take a DEAD battery
> > and peel off the outer metal casing. Taking care not to ruin the top
> > connector. Once disassembled, you have yourself a free 9 volt connector.
> > Once again, be careful. Only peel away the outer metal housing. Never
> > puncture any battery, and do not attempt this on a battery with a charge.
> > It might even be a good idea to short you "dead" battery with a resistor
> > until it is truly dead.
>6, not 9 cells.
>But that seems like a whole lot of work for something you can buy a 6-pack of,
>with wires already attached at Radio Shack for a buck or so.
>Visit the SRS Website at http://www.seattlerobotics.org
>Yahoo! Groups Links
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