I am looking for an interesting or exciting video that would, in some small way, get Grade 7 kids excited about electronics or science in general. The video will be one part of a talk by Skype I'll be giving to a teacher friend's Grade 7 class. Ideally, the video would be less than 15 minutes and deal with electricity or electronics directly.
posted by sirsteven
on Apr 8, 2011 -
I tripped over an RCA cable connecting my amp to my laptop...and the RCA cable broke off, leaving the actual plugs stuck inside the amp. How the heck can I get them out? [more inside]
posted by Lutoslawski
on Apr 4, 2011 -
Help me identify a mystery component from the board of one of two damaged/crippled Nokia 6820 phones and determine if it's possible for me to get one working Frankenphone out of the two. [more inside]
posted by weston
on Apr 3, 2011 -
What are some reasonably complex and conceptually interesting electronics projects that I can make for my class? [more inside]
posted by cognitio
on Mar 14, 2011 -
I'm trying to interrupt a standby timer on a DVD player for a homebrew projector dowser project and I need some help with capacitors and resistors. I've wired a momentary switch across the eject switch terminals to pop the cd tray from a distance. [more inside]
posted by edbles
on Feb 27, 2011 -
It's been cold recently (-15C) and I burned out two bulbs in my dutch bike's headlamp in a short time. Since the bulbs are hard to find, I thought this was a good time to replace the bulb with a 1-Watt LED light. What I built works, but I don't quite know why. [more inside]
posted by kamelhoecker
on Feb 20, 2011 -
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 -
I am looking for recommendations for DIY synth kits. I recently built the Weird Sound Generator and Voice of Saturn kits and am now looking for more to build. Does anyone here know of any similar noise-making PCB kits, or something else in general I should look into?
posted by archivist
on Feb 6, 2011 -
Cheap wall USB charger seems to interfere with iPod headphones, do I just need a better charger? [more inside]
posted by BungaDunga
on Jan 25, 2011 -
I'd like to use a single 5mm UV LED (3.4Vf, 20-25mA)
to charge a daub of glow-in-the-dark paint. It only needs to be lit around 1 minute of every 10 (or 6 seconds of every 60), and only when the (room) lights are out. What battery/circuit would be most economical to operate, and require the least-frequent battery changes? [more inside]
posted by jjjjjjjijjjjjjj
on Jan 18, 2011 -
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 -
Recommend places to shop for cheap import electronics in Seattle. Think knockoff ipads, android tablets, unlocked smartphones, and other geeky gadgets straight off the boat from China...The kinda stuff you can get at sites like www.chinavasion.com
posted by stenseng
on Jan 11, 2011 -
I have a lot of (old) ICs Integrated Circuits. (Also, crazy piles of capacitors and resistors, etc. but let us concentrate on the ICs.) Is there a website where an average citizen with these items can sell them to buyers? I fear they would just get lost buried or unseen on "ebay", even moreso on "craigslist". SeekIC.com seems like the kind of site I am after, but I would like to sell to buyers in the USA. [more inside]
posted by shipbreaker
on Jan 2, 2011 -
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 -
My boyfriend has a Phillips 32" in flat LCD HDTV, that appears to be from 2006 or 2007. The screen seems to still be in great shape, but the speakers have developed an annoying buzz. Is it likely that the speakers could be fixed at a reasonable cost, or do we need to junk the tv completely and just get a new one?
posted by mmmmbobo
on Jan 1, 2011 -
What interesting projects can I make with my Arduino and scavenged radio parts or other household items? [more inside]
posted by lollusc
on Dec 26, 2010 -
Can anyone recommend a good, inexpensive English-Spanish lexicon of TV/Cable/Broadcast technology terms? My sister does Spanish-language technical support for a large TV cable and Internet provider. She's first-language fluent in Spanish, but like many Spanish-speaking U.S. natives, leans heavily on Spanglish for many of the neologisms ("el remote") of the electronic age. [more inside]
posted by toodleydoodley
on Dec 25, 2010 -
Name this electronic component / construction technique! Found inside a late 1980s Datron 1081 bench multimeter. [more inside]
posted by ryanrs
on Dec 21, 2010 -
Recently, a friend's beat up old car was stolen the old fashion way - with a screwdriver to the ignition. This made me wonder about auto theft and newer, computer chip laden cars like the 2011 Volvo that I rode in yesterday. Has the computerization of automobiles led to new ways to steal cars? Basically, is there an car thief app for that?
posted by R. Mutt
on Dec 17, 2010 -
Why does stuff disappear from Costco.com website without an out of stock indication? [more inside]
posted by Twinedog
on Dec 17, 2010 -
I finally figured out the perfect gift to get the boyfriend but am having trouble finding what I want. Help me navigate the world of diy audio kits with respect to guitar amps! [more inside]
posted by joydivasian
on Dec 10, 2010 -
where can i buy a dog door with a timer OR how can i make one OR is there somewhere i can commission such a thing? [more inside]
posted by dontmesswithseth
on Dec 4, 2010 -
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 -
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 -
Does a 120V AC -->12V DC power supply need an RF choke when used to power a small DC motor? [more inside]
posted by jon1270
on Oct 6, 2010 -
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 -
I'm going to travel a bit and might try to combine that with shopping. (a very novel notion, I know) Price-comparisons wanted. [more inside]
posted by monocultured
on Sep 22, 2010 -
I'm looking for a digital picture frame that can play video and sound. I'd like to find something as close to 15 inches wide as possible. This is going to be used as a part of an exhibit, and must be no wider than 15 inches, total (screen + frame + anything else). There are no specific height requirements.
posted by nalyd
on Sep 20, 2010 -
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 -
I have a friend who would like to learn the mechanics of building effects pedals for guitars. [more inside]
posted by kittyloop
on Sep 9, 2010 -
My son wants to DJ using a conventional amplifier and speakers, but with his car amp (Pioneer GM-D7400M) powering an 800 watt sub-woofer. This requires a 110 volt wall outlet converted to 12 volts. Can he use a battery charger, or does he need a larger, non-pulsing DC source, like an actual battery or DC power supply? Any other options/wiring tips? TIA.
posted by weapons-grade pandemonium
on Aug 24, 2010 -
I will be visiting London for two weeks or so in mid September this year, and I will be doing a lot of shopping.
Since I have been recently working and living in Egypt, I intend to buy myself a new phone and some electronics, and maybe clothes. (electronics here are too expensive and not everything is available) [more inside]
posted by convex
on Aug 23, 2010 -
When I charge my phone using a portable charger, the battery runs out quicker than if it's charged from the mains. Why is this? [more inside]
posted by Wilka
on Aug 18, 2010 -