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Wet electronics

I just gave all of my personal electronics an (accidental) bath. Are they all ruined? [more inside]
posted by Snarl Furillo on May 30, 2014 - 21 answers

USA seller of "twin screened audio cable" or "two core screened cable?"

I need basically this. I'd rather order it from closer to home. My searches for this type of cable in the US haven't turned up anything, and I don't know enough about electronics to figure out what other names it might go by. I think it's a common type of cable so there must be something I'm missing. Thanks!
posted by univac on May 17, 2014 - 5 answers

What do I need to know to build a led art piece?

I want to learn how to build something like this. Starting from nothing, what kind of skillset will I need to acquire?
posted by pakoothefakoo on Apr 21, 2014 - 5 answers

Not that I'm going to do it or anything, but...

Is it feasible to take apart, modify, and put back together again a hair dryer so that it works in reverse, that is, become a small vacuum? I assume I would have to make the blower work backwards to become a sucker, and I would have to direct debris into a little sack and away from the blower and power source. If I were going to do it, what would I do? How much work would it be? How ugly would it be, assuming rudimentary skills and a home workshop? If it's impossible-- why?
posted by blnkfrnk on Mar 12, 2014 - 10 answers

How do I safely implement this one-off home electr(on)ics project?

How do I safely and (pretty) cheaply implement this one-off home electrics / electronics project? I have a low-wattage controller that will drive a high-wattage load having to do with the heating of water. I already have a GFCI extension cord that will stand between EVERYTHING and the wall outlet. The main complicating factor is that this is a single, custom-built thing so I need to use off the shelf pieces for a housing, etc. [more inside]
posted by Joey Buttafoucault on Dec 2, 2013 - 6 answers

Can I put a TV in my window so I can watch while I watch?

What are the downsides, or dangers to my TV, of putting my TV in a bay window? [more inside]
posted by Naib on Nov 18, 2013 - 7 answers

Baby monitor from webcam? (portable screen connected to wi-fi?)

We have a foscam webcam with night vision and the works. We can access it via wifi on our phones and computers, but want a dedicated screen to use as a baby monitor. Portable and/or plug-in... what are our options? Thanks!
posted by Chris4d on Sep 22, 2013 - 5 answers

How to replace the audible alarm in a 9v water leak detector with an led

I have a 9v battery powered water leak detector (this one: http://www.glentronics.com/water_alarm.htm ). I'd like to open it up and replace the audible alarm with an led. How do I do that? [more inside]
posted by atm on Sep 19, 2013 - 5 answers

What are these holes called?

What are these mounting holes called? Is there any kind of plate or bracket I could buy that would allow me to retrofit them onto a device that does not have them, without drilling into the device?
posted by cosmic.osmo on Aug 11, 2013 - 6 answers

How to choose a ventilation fan and estimate power usage for a costume h

I have a costume helmet that I'd like to have a forced air ventilation system for. I would like a small, low power fan (maybe from a laptop or small computer?) that I can run on batteries. [more inside]
posted by polywomp on Jul 28, 2013 - 3 answers

Do I need a potentiometer?

We have an alarm for a door that sounds constantly while the door is open. It is run from a 9v transformer that plugs into the wall and the circuit is triggered with magnets on the door. I would like to install volume control for the alarm. Is the correct device a potentiometer? If so, how do I select the correct one? Thanks!
posted by lake59 on Jul 1, 2013 - 10 answers

This is what happens when chemists have to do electrical engineering

What's the name of this circuit that I need to build or buy? [more inside]
posted by kagredon on May 30, 2013 - 18 answers

Buying electronics on Craigslist

Should I buy a TV off of Craigslist? [more inside]
posted by triggerfinger on May 2, 2013 - 12 answers

Fixing a DDR pad: irritating flex cable edition.

It looks thusly. My issue is that, despite the fact that it was originally barely taped down at all, I am unable to successfully, reliably reattach it using the same method. ("it" in this case being the printed black strips on the left). I am reasonably sure that lack-of-contact is my problem, because if I physically hold the cable to the board, it will reliably work when I push a button. Best I can do is that sometimes, after putting it all back together for the Nth time, one button will work. Maybe other buttons on its side will work, maybe not. Maybe it'll work for a few presses and then quit. The cable looks fine, the board contacts look fine, no amount of scotch tape is helping me out here. How do I affix these suckers but good?
posted by curious nu on Apr 19, 2013 - 7 answers

Digital Electronics: Keeping a logic level high or low for one minute

I want to use a timer (minimum on time is one minute) to turn on my coffee maker. The ON-OFF button on the coffee machine is a momentary contact push button which is read by a logic board. Can I use the (isolated) relay contacts on my timer to close that push button for one minute, the minimum on-time of my timer? [more inside]
posted by mbarryf on Mar 15, 2013 - 6 answers

Cell phone repair trouble

I'm trying to fix my phone. How do I deal with a very tiny, hard to get at screw with a stripped head? [more inside]
posted by delezzo on Feb 27, 2013 - 4 answers

Why are my headphones not playing vocals?

I have a pair of Monster Inspiration. I'm trying to play Madness by Muse but if I plug the headphones completely into the iPod or computer, I can't hear the vocal parts at all. If the jack isn't completely in, then I can hear it perfectly. Why is this happening?? [more inside]
posted by cyml on Dec 27, 2012 - 5 answers

How to watch Yogaglo on my TV?

I want to watch videos from a yoga website (Yogaglo) on my TV. The tools I have available to me are: MacBook, xbox 360, and Apple TV. Can I make it happen? [more inside]
posted by Anonymousness on Dec 22, 2012 - 5 answers

How do you salvage perfectly good but filthy electronics and tools?

Your best hacks for cleaning filthy items such as computers, electronics, tools? [more inside]
posted by momochan on Aug 7, 2012 - 14 answers

Snail trails on Garmin Nuvi 255W

Snail trails on Garmin Nuvi 255W. When out and about this device is now making pale blue 'snail trails' on the map tracking the car from A to B. It is working as it should otherwise. Does this mean that the device is on its way out? I checked some forums but could find any mention of this bizarre behavior.
posted by lungtaworld on Aug 6, 2012 - 5 answers

Peripheral comfort zone?

What ambient temperatures are safe for typical consumer electronic devices? [more inside]
posted by jon1270 on May 20, 2012 - 5 answers

Please help me ID this TO-220-3 IC

What kind of IC is this? Picture shows a TO-220-3 IC with the label S9010, B5 and a manufacturer logo of a sort of stylized C. It is installed in the Q1 position so I assume it is a transistor. [more inside]
posted by KevCed on May 12, 2012 - 7 answers

man vs locked car

What laws or rules govern automobile door locks in the United States? [more inside]
posted by jepler on May 3, 2012 - 20 answers

Power surges from rapid on/off?

Does flipping a switch on and off rapidly damage electrical equipment? [more inside]
posted by antgly on Mar 24, 2012 - 12 answers

TV Party Tonight!

Help me choose the right small HDTV. [more inside]
posted by BitterOldPunk on Mar 10, 2012 - 15 answers

Arduino Starved For Ideas

What could/should my friend and I build first with an Arduino starter kit or two? [more inside]
posted by cassini on Jan 8, 2012 - 7 answers

Camera Needed. Not too expensive, likes indoors.

Best camera for indoor/low light conditions about $500ish --without use of a flash preferably. Difficulty: Must be available at Best Buy or somewhere immediately available. [more inside]
posted by MasonDixon on Jan 8, 2012 - 11 answers

Will it go round in circles until it stops?

Where can I get a replacement motor for my vintage Christmas color wheel? [more inside]
posted by the matching mole on Dec 11, 2011 - 4 answers

Polarity unclarity

How to I tackle replacing (rear) car speakers when there's a special connector? [more inside]
posted by Blazecock Pileon on Oct 5, 2011 - 4 answers

New Television Questions!

Please Hope me select a new TV. [more inside]
posted by Danf on Sep 30, 2011 - 22 answers

Non-Woofing Subwoofer in Need of Repair

Help me find a place that can do quality speaker/subwoofer repairs in the Los Angeles area. [more inside]
posted by Hairy Lobster on Aug 22, 2011 - 3 answers

All of the boys and all of the girls want to FPGA-me

Is there a way to directly download a coded configuration from an FPGA board to a computer? [more inside]
posted by kagredon on Aug 18, 2011 - 5 answers

Arduino

What are some cool things I can do with an arduino, Python and stuff I already have, with only a few new parts? [more inside]
posted by mccarty.tim on Aug 16, 2011 - 6 answers

Help me replace a blown woofer for a Spica TC-60

How do I replace a blown woofer in a Spica TC-60 loudspeaker? The datasheet is here. I am generally capable, but don't know anything about building/repairing speakers. Can I get away with replacing just the one? Is there any danger of damaging the crossover (whatever that is)? The very nice guy from Madisound recommended a ScanSpeak replacement but how do I know if it will fit and/or work properly? If I'm reading the datasheet correctly, the original seems to be 180mm in diameter, and the replacement he recommended 170mm - is this a good idea? How can I tell if there's anything else I should try? What, if anything, do I seem to be overlooking? Thank you!
posted by jcrcarter on Aug 3, 2011 - 2 answers

How do I run 20ish LEDs with a LED Driver built to run 1 large LED ?

I want to drive 20ish LEDs, should I run them as series or parallel and why ? [more inside]
posted by 70klicks on Jun 20, 2011 - 8 answers

LED lightbulbs are illuminating but not illuminating.

What is going on in LED lightbulbs? I mean the devices, not the industry. [more inside]
posted by chairface on May 11, 2011 - 9 answers

Where can I get a replacement A1242 transistor?

Where can I get a replacement A1242 transistor? [more inside]
posted by seanmpuckett on Mar 28, 2011 - 8 answers

Nokia 2730 not working.

Today I bought a Nokia 2730; stupidly, I took the battery out before taking it home. Now, even though it says the battery is charged, the phone won't work. Help! [more inside]
posted by Monday, stony Monday on Feb 17, 2011 - 8 answers

3.5mm male-to-male coupler - does it exist?

I am in search of a 3.5mm male-to-male coupler. [more inside]
posted by hsawtelle on Jan 17, 2011 - 12 answers

I'm not turning Japanese, so must sell it.

What is the best way for me to sell (in the United States) an electronic device designed for the Japanese market? [more inside]
posted by BlahLaLa on Jan 12, 2011 - 6 answers

Best blu-ray player for an elderly person who doesn't have internet?

My mother-in-law's old DVD player bit the dust recently and we would like to get her a blu ray player. She does not have internet and has a Magnovox 27 inch analog TV. She just wants to be able to view DVD and Blu ray movies. Any recommendations on a good, basic player?
posted by I'm Brian and so's my wife! on Jan 1, 2011 - 7 answers

What's age-appropriate for a gadget-nut 4 year old?

My 4.5 year old got to play with my friend's Ipod Touch, loved it, and is now adamant that Santa is bringing her one. This ain't going to happen. However, I would like to find her some kind of age-appropriate equivalent toy for Christmas. We don't do huge Christmas celebrations or massively expensive gift-giving, so this will be her big present, even if it's under $75. What can you recommend that won't make her ultra-disappointed (understanding that disappointment is a part of life, yadda yadda yadda)?
posted by swimming naked when the tide goes out on Nov 25, 2010 - 24 answers

I've become afraid to park in my parking space.

I need help parking in my apartment garage parking space. [more inside]
posted by fiTs on Nov 20, 2010 - 24 answers

Or failing that, a time portal to 2005 and $100 or so in appropriately dated bills...

Does anyone make a thumb drive that plays MP3s? [more inside]
posted by 256 on Nov 16, 2010 - 24 answers

Is the Big Volume and Tone Knob lobby behind the lack of wiring straight pickup-to-jack diagrams?

How can I wire a bass so that the volume and tone knobs are bypassed? [more inside]
posted by ignignokt on Nov 13, 2010 - 5 answers

How do I power a 5mW laser?

I have a 5mW laser module. What do I need to attach it to to power it? [more inside]
posted by RobotHero on Oct 27, 2010 - 9 answers

Gadgets in Manhattan?

Where in Manhattan should I go to look at and possibly buy gadgets, electronics, and computery type stuff that would be hard to buy (excluding online) anywhere else?
posted by Mwongozi on Oct 11, 2010 - 9 answers

Please recommend a soldering mat.

Please recommend a "soldering mat" or other heat-resistant surface. [more inside]
posted by crawl on Oct 4, 2010 - 14 answers

What kind of gadget can a newbie build using the vast inventory of Akihabara?

I need an easy, yet cool-looking electronics project. In around one month, I'll be visiting Tokyo, including a day-long trip to Akihabara. Inspired by this post I think it would be really, really cool if I spent part of that day buying parts in order to create something electronic. Difficulty: I have close to zero experience with electronics. [more inside]
posted by Deathalicious on Sep 28, 2010 - 7 answers

Help me teach my son (and myself) electronics

My son got a 130-in-1 electronics lab for his 8th birthday and discovered digital logic from MacCauley's How Things Work. Now he wants to build a half-adder. Help? [more inside]
posted by rikschell on Sep 13, 2010 - 15 answers

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