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211  Forum 2005-2010 (read only) / Bar Sport / Re: Sparkfun overpriced on: July 13, 2010, 07:12:33 am
Obviously, there are people who feel that their prices are reasonable enough.  Supply and demand.  Suppliers will charge what consumers are Willing and Able to pay.

Maybe you should compete with them.  Sounds like you have it figured out already.  With the amount of money they're making, you should make a killing with your pricing.
212  Forum 2005-2010 (read only) / Bar Sport / Re: Sparkfun overpriced on: July 12, 2010, 11:28:56 am
I think one of the reasons that the customer is always wrong these days is because the honesty and civility in our country is on the decline.  More and more, it is look out for yourself and screw the other guy.  Just look at the number of lawsuits at any particular time.  All of this to say that Waterppk is right, if it's an electronic device and you hooked it up, it's yours, no refund.  This is the same policy in automotive and other industries as well.

I too have had good experiences with SF.  I've ordered several parts and had no problems with shipping or the items I received.  The complaints about pricing are a bit ignorant, I think.  No one knows how much they pay for parts, manufacturing, or engineering time.  They have a staff, warehouse, manufacturing facility, etc. that must be paid for.  None of us knows what kind of margins they operate on.  They are obviously providing a good service to a lot of people or their business wouldn't be expanding.  They provide chips with pins so close together that no one could do it with an iron.  That takes a very expensive machine to build those parts.  Hobbyists didn't used to have access to some of those things.  Now we have breakout boards.  I tip my hat to them.  Great job!
213  Forum 2005-2010 (read only) / Bar Sport / Re: Sparkfun Free Day is Back on: January 13, 2011, 12:48:31 pm
Do you have to get through all 10 to finish, or can you just take what little you get and run with it?
214  Forum 2005-2010 (read only) / Bar Sport / Re: What is Piracy with respect to Arduino? on: October 08, 2010, 08:27:41 pm
@Arduino Malaysia, if you are truly selling an official Arduino board, kudos.  I appreciate that you are selling the real thing and not a clone that is being marketed as if it were the real thing.  I see the fake ones on Ebay all the time.  It is a shame and those people should be banned from selling.  I don't have a problem with them selling clones, but they should be labeled as such.  I am in complete agreement.
215  Forum 2005-2010 (read only) / Bar Sport / Re: 3 LCD Pocket Scopes at DealExtreme on: November 17, 2010, 04:17:07 pm
You can buy a working scope here:  http://www.seeedstudio.com/depot/dso-nano-v2-p-681.html?cPath=104_108&zenid=83f0c199e2cfbf32e41e273c23136db2
What you are looking at on deal extreme is the DSONano V1.
216  Forum 2005-2010 (read only) / Bar Sport / Re: "Directional Switch" Design on: October 12, 2010, 09:15:17 pm
I made an assumption in reading your requirements that it didn't need to be directional.  If it does indeed have to be directional, a flip flop or some other electronic logic would probably be required.
217  Forum 2005-2010 (read only) / Bar Sport / Re: "Directional Switch" Design on: October 12, 2010, 12:28:05 pm
No need for flip flops or any electronic parts other than some switches.  Use two microswitches.  On switch #1, connect the common terminal to +V and the NC terminal connects to the NO terminal of switch #2.  Common terminal of switch #2 connects to one side of light bulb or LED.  Other lead of light goes to ground.

When drawer is closed, one of the two switches is open and the other is closed -- light off.  When drawer is half open, one switch is closed and the other is open -- light on.  If drawer is opened past the second switch, one switch is open and the other is closed -- light off.

218  Forum 2005-2010 (read only) / Bar Sport / Re: Suggestions on how to keep my shop cool... on: July 14, 2010, 05:19:07 pm
Wow, that's a very non-standard application for an air conditioner.  I assume that by portable, you mean a "window shaker".

Have you considered an evaporative cooler?  That should work quite well in your environment.  I don't know how much water would be required, though.  I feel for you as I speak often with an A/C distributor or ours that is based in Phoenix.  He's a pretty imaginative and very experienced guy.  I could contact him and ask if he's willing to discuss some alternatives with you.  If so, I could PM the info to you.

I don't really have any ideas to help.  Only thing I can think of is to run water over the condenser coil to keep it cool.  This really doesn't deal with your door problem, though.  I'll keep you posted.
219  Forum 2005-2010 (read only) / Bar Sport / Re: Pull Up or Pull Down; That is the question... on: May 02, 2010, 09:00:53 pm
I don't think it really matters.  There are switches and other devices that will pull up or pull down depending on your preferences.  Personally, I agree that pull up is the way to go since it's already built-in to the chip.
220  Forum 2005-2010 (read only) / Bar Sport / Re: To Moderators : Forum Censorship on: April 29, 2010, 07:47:05 am
That's a poor assessment, I think.  How many people here do you think buy from them?  Anyone who has purchased one of their products is, be definition, "associated" with them.  This is indirectly, of course, but the fact remains.  I think maybe what you're saying is, "How often does someone FROM SF post here?"  The answer to that question is, probably fairly rarely compared to the total postings per day.

If you're harboring ill will towards them because you didn't get anything on Free Day well, neither did I.  I don't feel some sort of entitlement because they were giving away something free, thus, I don't feel cheated.  I think there are a lot of people who do (did) feel cheated.  Yes, I was disappointed, but I got over it.  If that's your beef, I think it's a poor excuse.  If you've been wronged by them in some professional sort of way, you would have a legitimate complaint.

(steps off his soapbox)
221  Forum 2005-2010 (read only) / Bar Sport / Re: To Moderators : Forum Censorship on: April 29, 2010, 05:52:24 am
SF?  Is that SparkFun?  I love those guys!
222  Forum 2005-2010 (read only) / Bar Sport / Re: Make a Humidity Sensor? on: March 28, 2010, 06:07:09 pm
I've been known to scavenge some temp/humidity sensors from thermostats.  I have some Sensirion SHT-11s.  They're pretty good sensors.  I think I have one mounted to a board that you could use on your arduino.  I have code also.
223  Forum 2005-2010 (read only) / Bar Sport / Re: Im learning PIC, dont kill me on: February 10, 2010, 08:20:44 am
I had dabbled with PIC for a while too.  A friend had given me a PIC Start plus programmer and I too had ordered free samples.  Assembly code is awful!  After more grief than anyone should bear, I bought an Arduino.  What a wonderful tool!  I will NEVER go back to PIC.  Do yourself a favor.  Order the Arduino now, finish your project with the PIC, and then kick yourself for procrastinating after you've successfully used some of the Arduino example sketches.  That will take about an hour after opening the box.  smiley  You won't regret buying the Arduino, but you sure will wish you never touched the PIC.  Well...maybe it will help you appreciate the Arduino that much more.
224  Forum 2005-2010 (read only) / Bar Sport / Re: It's "you're", not "your"  :) on: February 09, 2010, 05:22:23 pm
koyaanisqatsi, I appreciate your comment.  That is somewhat of a pet peeve of mine as well.  Thanks for speaking up for proper english.  "Evil flourishes when good men do nothing."   smiley-wink
225  Forum 2005-2010 (read only) / Bar Sport / Re: Making an electronics project survive on: December 23, 2009, 09:46:53 am
It sounds to me like you will be using your Arduino in your home.  That means that you aren't likely dealing with temperature extremes.  That's one less thing to worry about.

How close are you planning to have your arduino to the tank?  Humidity could be an issue if you're really close, well, close to exposed water.  If you're a few feet away, you shouldn't have any problems there either.

1. A project box is probably the best way to enclose and protect your electronics.  There are a number of different electrical connectors that you can use.  Molex is readily available from Radio Shack.  You can also get some inline headers or other connectors from places like Digi-Key.  Probably not critical, unless you're using thermocouples.

2. This is going to be a matter of personal preference.  Space inside the box will help you decide this also.  You could use a terminal strip or a molex that "locks" into the hole.

3.  I've never used one wire sensors, so I don't know how sensitive the communications wires are to other communication wires if they're in the same bundle.  Might be good to consult the datasheets for the sensors on this one.

4.  If you're planning only to run lights, you can have wire several feet long with no problems.  When you get into situations where voltage is critical, you have to look at the number of Ohms per foot of a wire to help determine what gauge wire to use.  This is in the hundreds of feet range.  Not going to be a problem for you, I don't think.

5.  Since you're going to have a very noisy environment, you will probably want to use a metal enclosure for your arduino.  Be careful not to short anything inside it!  Your sensor wires may need shielding.  PWM for lighting shouldn't need any special consideration.

Hope this helps.  I saw several reads and no replies.  Happy building!
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