RE: using breadboards
- From: "Ken Perry" <whistler@xxxxxxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Tue, 24 Feb 2009 15:42:54 -0500
It's hard to order but if you can't find one ask me and I can get my kids to
pick one up at radio shack or the source in BC since that's where it is
made. I have had one for a year and love it.
Ken
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of The Elf
Sent: Tuesday, February 24, 2009 2:40 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: using breadboards
yeah hoo, thanks for the multi meter link, having worked in modular
electronics, auto mechanics, and as a handyman, I'm used to doing this stuff
on my own, and miss not being able to check the readings for myself!
take care,
inthane
----- Original Message -----
From: "Trouble" <trouble1@xxxxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Monday, February 23, 2009 8:10 AM
Subject: Re: using breadboards
> Another place for parts is electronic things people don't want. lots of
> transformers, and other goodies.
> if your going to play with this stuff you might want to check into a
> talking multimeter tester. it can help find out if parts are worth keeping
> and witch way they fit.
> The Nexxtech talking multimeter is available from a place
> called KMS Tools in Canada. Their web site is
> http://kmstools.com
> and the multimeter is listed under "automotive tools". They will ship to
> the
> US and Canada, but we are not sure if they will ship to other countries.
> The
> total cost of the multimeter, including shipping, is approximately $45 to
> USA addresses.
>
> At 09:57 AM 2/23/2009, you wrote:
>>I can handle building the laptop, I think. Getting all those parts in
>>where they go is a nice pain in the ass, though.
>>I had to switch out the motherboard on my gateway computer, that provided
>>for an interesting experience. :)
>>Thanks for the links though, I"ll check them out.
>>
>>----- Original Message ----- From: "Trouble" <trouble1@xxxxxxxxxxxxxxx>
>>To: <programmingblind@xxxxxxxxxxxxx>
>>Sent: Monday, February 23, 2009 7:56 AM
>>Subject: Re: using breadboards
>>
>>
>>>here are a few sites that might give you some interesting reading,
>>>build your own laptop:
>>>http://www.daileyint.com/build/buildtoc.htm
>>>how stuff works:
>>>http://www.howstuffworks.com/
>>>
>>>
>>>At 04:43 PM 2/22/2009, you wrote:
>>>>I figured I was totally scrued up.
>>>>It's just something I want to do.
>>>>I have an idea for a PDA I would like to build that sounds fun, just my
>>>>personal little PDA. I could totally customize it, and it would be
>>>>cheaper than anything I could buy more than likely.
>>>>I also want to just learn how these things work. I've often found them
>>>>interesting.
>>>>I have been digging around for some electronics tutorials, but haven't
>>>>found all that much that doesn't consist of a ton of pictures, etc etc.
>>>>
>>>>----- Original Message -----
>>>>From: <mailto:inthaneelf@xxxxxxxxxxxxxx>The Elf
>>>>To:
>>>><mailto:programmingblind@xxxxxxxxxxxxx>programmingblind@xxxxxxxxxxxxx
>>>>Sent: Sunday, February 22, 2009 2:34 PM
>>>>Subject: Re: using breadboards
>>>>
>>>>lol, odd list to send this to, but I used to do modular electronics, so
>>>>your in luck.
>>>>
>>>>firstly, that setup will not do the job, you need to find a basic
>>>>electronics tutorial and read it, smile, not ragging on you, just the
>>>>truth.
>>>>
>>>>there are basic principles that you haven't grasped yet.
>>>>
>>>>for a battery charger, you need the 110 volt (wall) plug, a transformer,
>>>>you need a full wave rectifier (I'll explain in a minute) and you may
>>>>want some filter capacitors, though there not really needed for a bat
>>>>charger.
>>>>
>>>>now then, your first mistake is that your setup would have put wall type
>>>>current, called AC for alternating current, into resisters and batteries
>>>>which are DC (direct current) devices , that's a large shocking flam
>>>>buoy recipe.
>>>>number two, you said resisters to bring the current down, yes resisters
>>>>will drop current, but not in the way you need it to, this kind and type
>>>>of current step down is done with a transformer (that's why so many
>>>>things with removable wall plugs have that large box either at the wall
>>>>end, or in the middle of the cord, the box is mostly the transformer
>>>>that reduces the voltage and changes the amperage of the wall current.
>>>> and without the full or half wave bridge rectifier I mentioned before,
>>>> your still plugging DC parts into an ac circuit, another flam buoy!
>>>>the full wave bridge rectifier I have been mentioning is the component
>>>>that changes the AC current coming out of the transformer into DC
>>>>current for the batteries to charge off of.
>>>>
>>>>here is the correct series of components for a simple power supply:
>>>>
>>>>1. 110 volt power plug, which you attach to a specific set of contacts
>>>>on a 110 AC to... (output voltage equals the number of batteries going
>>>>into the battery holder, times 1.5 volts) so if you have a battery clip
>>>>for 2 batteries, then its 3 volts, if its four then it's six volts) AC
>>>>transformer (note here, all the transformer does is change the voltage
>>>>and amperage of the power, not its type, at this point you still have AC
>>>>current running through the thing).
>>>>3. to the output side of the transformer you attach the input leads off
>>>>the full wave bridge rectifier (this is the device that changes the
>>>>power from AC, to DC so its the same type of current as your batteries).
>>>>4. to the output side of the FWBR you can either:
>>>>4-1. insert two filter capacitors to screen out noise the circuitry
>>>>generates, but this is not needed in a simple charger(*note,! the filter
>>>>capacitors have to be hooked up the correct way, one end is positive one
>>>>negative).
>>>>or,
>>>>4-2. attach your battery holder, making sure you get the polarity of the
>>>>wires correct to the battery holder , or your making a loud bang and a
>>>>lot of stink and a hazard out of your batteries.
>>>>
>>>>another point, this simple setup has no way, like many chargers you buy
>>>>do now a days, to tell when the batteries are fully charged, and stop
>>>>trying to charge them, and this will heat up, and eventually give you
>>>>another ka boom.
>>>>
>>>>the circuitry for a regulator is not to hard, but I can't pull it out of
>>>>my head like I can a simple power supply.
>>>>
>>>>that is the basics of a power supply and it will work as a charger. and
>>>>it will not cost much, but why reinvent the wheel, unless your going to
>>>>try for some work in the electronics field? which I would not advise,
>>>>some of the stuff is extremely complex, and some of it quite delicate,
>>>>and none of it is marked in a method that can be read with our current
>>>>tech abilities.
>>>>
>>>>laters,
>>>>inthane
>>>>----- Original Message -----
>>>>From: <mailto:tyler@xxxxxxxxxxxxx>Tyler Littlefield
>>>>To:
>>>><mailto:programmingblind@xxxxxxxxxxxxx>programmingblind@xxxxxxxxxxxxx
>>>>Sent: Sunday, February 22, 2009 12:06 PM
>>>>Subject: using breadboards
>>>>
>>>>Hello,
>>>>I'm looking to start using breadboards to create some small things.
>>>>I'd like to start off with something small, possibly a battery charger
>>>>or something similar.
>>>>I found a small tutorial on instructables, but not totally sure how to
>>>>get going.
>>>>It explained how things work somewhat, but not accurately enough for me.
>>>>It mainly used pictures to explain, which didn't do me a whole lot of
>>>>good.
>>>>Any ideas on how I can set this up?
>>>>I understand the polarity--hooking one negative end to the positive etc
>>>>so that the circuit forms a loop, I'm just not sure how to do what I
>>>>want.
>>>>So, here's my idea.
>>>>If I figure out the layout, I can set up a power cable going from the
>>>>outlet to the breadboard.
>>>>Then I can place in jumpers to bridge the gap.
>>>>I can take the 120 volts down to 9 with some resisters (?) and hook a
>>>>battery pack to the other end that will charge the batteries.
>>>>I'm thinking I'm way off, but... ideas would be great.
>>>>If I could, I'd like to set it up so it'd charge like 4 at once, then I
>>>>could cut down the 120 to 36. Possibly put in a heat sink to keep it
>>>>from getting really hot.
>>>
>>>Tim
>>>trouble
>>>Verizon FIOS support tech
>>>"Never offend people with style when you can offend them with substance."
>>>--Sam Brown
>>>
>>>Blindeudora list owner.
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>>
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>
> Tim
> trouble
> Verizon FIOS support tech
> "Never offend people with style when you can offend them with substance."
> --Sam Brown
>
> Blindeudora list owner.
> To subscribe or info: //www.freelists.org/webpage/blindeudora
> __________
> View the list's information and change your settings at
> //www.freelists.org/list/programmingblind
>
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