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31  Community / Exhibition / Gallery / Re: Computerized cat toilet on: February 10, 2013, 10:10:44 pm
Can we subscribe to this twitter channel?

Well, using the screen name from the screen shot, the RSS feed for it would be:
http://api.twitter.com/1/statuses/user_timeline.rss?screen_name=romaslina
32  Community / Bar Sport / Re: How do you misuse sticky tape? on: February 10, 2013, 08:38:33 pm
How about twisting two wires together, and taping them, instead of using wire-nuts?

its not uncommon for me to walk into work and see one of the engineers had setup a test ... 12 volts 50 amps running though 22 gauge wire connected by twisting the ends and a little bit of electrical tape covering it

Well, as a temporary thing ... sure. In my last house, I discovered an outlet wired this way, using lamp cord. I'd been running a table saw from it.
33  Community / Bar Sport / Re: How do you misuse sticky tape? on: February 10, 2013, 07:33:20 pm
I would imagine that taping co-workers to office chairs is misuse.

Then there's taping the cat.

Or taping postal workers?

I once took the cover off a co-worker's phone, and taped down the hook lever. He couldn't answer his phone. Looking back, I should've used USPS tape.

How about twisting two wires together, and taping them, instead of using wire-nuts?

Those are just some of the ways I'd mis-use sticky tape. YMMV smiley-evil
34  Community / Bar Sport / Re: Look what I found... on: February 10, 2013, 07:25:39 pm
I was trying to find a spaghetti monster image on google to parallel the panel but can't find one that is comfortable to look at.

You're not denigrating His Noodly Appendage, are you?  smiley-eek-blue
35  General Category / General Discussion / Re: Yet Another Forth for Arduino on: January 02, 2013, 09:01:15 pm
I'm not a Forth programmer. But I applaud your efforts, and your release!
36  Community / Gigs and Collaborations / Re: Hard amplifier problem - Pleease anwer on: January 02, 2013, 08:57:12 pm
I guess nobody knows how to solve it : (

Turn that frown upside down! There are pages and pages of op-amp instruction on the web. The 1st result I clicked on provided a very important clue in re. that circuit diagram.

its not that hard, and its not a transistor

From the drawing: 'All steps must be based on knowledge that we all know through mechatronics or before.' Hmmm, doesn't look like a Transformer either.  smiley-roll
37  Community / Bar Sport / Re: What's in a name? on: December 31, 2012, 08:32:21 pm
Everyone is too polite.  You've scarred him for life.

He'll probably turn out tough as nails though.

38  General Category / General Discussion / Re: Getting the Arduino Project Book on: December 31, 2012, 07:30:45 pm
This isn't the official Arduino project book, but it's good to get going with.
http://www.earthshineelectronics.com/files/ASKManualRev5.pdf

At the moment, http://store.arduino.cc/ is "down for maintenance" until the 6th. I would be surprised if the book wasn't available there.
39  General Category / General Discussion / Re: What components to get apart from Arduino ? on: December 31, 2012, 07:26:38 pm
Have a search across various Arduino supplier sites- they tend to have pre-packed sets of odds and ends.

This.

Lots of vendors, such as Sparkfun, Adafruit, etc., will have "experimenters" kits, or fun project kits. Check out things such as parts grab-bags, etc., such as at Yourduino. If you want to play with motors, Adafruit has a motor shield kit. With a lot of surfing, you can find things more cheaply than buying the kits from Sparkfun or Adafruit, but until you have learned a bit, the kits can be easier than buying parts from Mouser, Dip Micro, Digikey, etc. In some cases, the kits could end up being cheaper, especially if buying from Asia.
40  General Category / General Discussion / Re: Yet Another Forth for Arduino on: December 31, 2012, 07:17:56 pm
I'm happy to release it to the wild under the GPL V2 if people are interested in it. I'm just not sure how to release it for people to find it.

You could check out Gitorious or Github. Sourceforge is a possibility too, or maybe even Savannah. I used Sourceforge long ago, and I don't know what they're doing these days - back then, I think I updated using CVS. I hope they've upgraded to something else. What hosting you choose will depend on your comfort level with the version-control software they're using, and what sort of capabilities you think you'll want.
41  Using Arduino / Audio / Re: audio input thoughts... on: December 31, 2012, 06:52:08 pm
If you're putting negative voltage on an Arduino input pin, that won't work. You will need to rectify it first. But, I think you'll have trouble. You mention max V diff. of .7V, so I infer that your peak +V is .35V. A diode typically has a forward voltage drop of .7V, so there goes your whole signal.

It is true that once you've rectified it, you can use a capacitor to filter and get closer to DC, but your voltage will still have ripples.

More description of what it is, functionally, you're trying to do, would likely help here. Since you mention using square wave instead, it would seem you're generating the sine wave as well. What is it that's generating the signal?
42  Community / Bar Sport / Re: What's in a name? on: December 31, 2012, 05:35:50 pm
The Ariel Atom is awesome! I want one.

"Adam" would've worked just as well, without the associated difficulties of having to constantly spell his name, when people write "Adam".
43  Community / Bar Sport / Re: Answer me this on: December 30, 2012, 09:31:15 pm
How did you get a free box? I am in need for more of those boxes. Are they running a discount?

I wore a big coat.  smiley-twist

No, really, it's a sale they're running ... at least at the store I went to.
44  Community / Bar Sport / Re: Answer me this on: December 30, 2012, 08:30:32 pm
Get some Really Useful Boxes from office depot

Thanks for that. I went out and looked at them, bought 3 (buy 2, get 1 free). One thing about them which makes them less than really useful is that the different sizes don't stack nicely, that is, for a given footprint box, there aren't 2 smaller ones which combine to the same footprint, or a combination of 2 of one size and 1 of another for the same size on top of a larger box. I think I found only 1 instance of 2 boxes with a different height, but the same footprint. Obviously, that wasn't a design goal. (And I didn't try every single box -- the really small ones weren't of interest to me.)
45  Using Arduino / Project Guidance / Re: Arduino car horn on: December 09, 2012, 11:21:22 am
The OP said 'meep', not 'honk'. I think we need some clarification as to whether it's a Road Runner, a Buick, or a locomotive sound that's desired. "Meep" makes me think Citroen. smiley Then, getting into replicating something like these, makes me think of harmonics and wavetable synthesis. Or just using a wave or MP3 shield, and finding a recording of the desired sound. Whether that's simple depends on how you define simple.
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