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]
Ever since the DVD age began, I've noticed that music and sound effects in movies are always WAY louder than the dialogue. It's really annoying. Will a properly configured surround sound system fix this? What is the right way to set up surround sound speakers? Are sound bars any good? [more inside]
I know pretty much nothing about the e-reader market right now, but I'm thinking about taking the plunge. Given my particular requirements, what is likely to be the best e-reader for me? [more inside]
What would be the best ways to secure multiple laptops, smartphones, cameras (physically, and also to catch thieves) in a "rustic" foreign country... keeping in mind I need to fit everything in luggage or fashion it out of raw materials in country. [more inside]
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]
I've had this problem twice now: I purchase an electronic item from Amazon and when I call in for service under warranty, I'm told that their records show a different, much earlier purchase date. [more inside]
My rooted verizon galaxy nexus won't boot and I need help recovering it (more inside) [more inside]
I would like to purchase an off-brand tablet computer from a discount electronics website. I know nothing about components or specs or anything- the only info I have to go on is bigger number is good. Please help me. (sorry but this post got way too long, you've been warned.) [more inside]
I just bought an iPad 4, and (since I rarely spend this much on myself) I'm really paranoid about taking care of it. All the special snowflake details inside... [more inside]
I'm starting to mess around with electronics as a hobby and need to buy a soldering iron. But which one? Bonus question: a cheap, effective multimeter? [more inside]
I have a 1995 Toyota Corolla Conquest who's factory standard radio has just died (I think). It made a slight noise last night and cut out, and is now just flashing 01:00 on the clock with no buttons responding at all. I thought maybe the fuse had blown so I checked the radio fuse, but it doesn't look to have blown (something I suspected as a time keeps flashing on the display and I thought a blown fuse wouldn't allow any electronics to work). Also the cigarette lighter still works and that is connected/part of the radio fuse. [more inside]
I am making a prototype of a consumer electronic device, the final product will be housed in plastic. I want to get a case made for the prototype that will resemble the final product. The case design is nothing complicated, essentially a rectangular box with some rounded corners and some holes for buttons, etc. I have designed the look of the outside of the case in adobe illustrator (top, bottom, front, rear and side views). The case will have a top shell and a bottom shell that fit together. What is the best way to go about getting maybe 2 cases made for prototypes? I am thinking either cnc or 3d printing, but I don't know what the best route to making a 3d model is from adobe illustrator or anything...
My wonderful iPod, going on nine years now, seems to have finally gotten to the point where I can't fix it anymore. I've replaced the hard drive, battery, hard drive cable, and logic board, and yet all it does is turn on, show the Apple logo, and turn off, repeating over and over. What else could be wrong, and how can I fix it? This is a B&W 4th gen iPod, originally 40 GB.
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]
Where in Toronto can I buy small cylindrical rechargeable 3.7V Li-ion batteries like the UltraFire, hopefully at a reasonable price? (or maybe they were 3.6V, I can't recall) [more inside]
Resistor color coding (the electronic color coding) has more than one color combination to resistor value. How do you know which one to use? [more inside]
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]
I need some help building a gadget with an Arduino board. Specifically, I need help finding a way to dispense very tiny quantities of fluid (10 μL) once an hour. The valve assembly is the part I'm having trouble with... [more inside]
How should I price a used iPad 1? [more inside]
Help me find the perfect Christmas present for my "Maker" dad - ideally it would be an set of plans on how to craft something from scratch, rather than a kit of physical parts. [more inside]
I have a Sony flatscreen TV: KLV-26HG2 LCD WEGA Color TV. It is a couple of years old. I would like to use Apple TV with it, but the Sony lacks the HDMI port that I need. Is there some sort of device that I could plug into the Sony that would have the HDMI port on the other end, so that I could then plug that into the Apple TV?
Help me find a device (or two devices) that will take pictures, and then easily convert these pictures to PDFs. Alternatively, persuade me to buy an iPad! [more inside]
Pls recommend an electronics timer that can run for a minute, shut down for a minute then restart..and continue looping that pattern.
Pls recommend an electronics timer that can run for a minute, shut down for a minute then restart..and continue looping that pattern. [more inside]
I have a design for a new keyboard. Any ideas/advice on where to look for help with the circuits, driver programming and anything else I'm forgetting? [more inside]
What (European) plug adaptor do I need for this plug (attached to a set of fairy/Christmas lights)? [more inside]
I messed up my travel packing, and I now need to buy a charger for a Canon S95 camera battery in St. Petersburg, Russia. Is there any place where I could get one for a reasonable price? I'm staying downtown.
My subwoofer and amp both respond to the other's IR remote control. [more inside]
Recommended PS3 repair specialist in Vancouver, Canada? [more inside]
Your best hacks for cleaning filthy items such as computers, electronics, tools? [more inside]
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.
Can I just take the guts out of my old Mac Pro and put them in my new Mac Pro? [more inside]
My wife's birthday is coming up in early September and I need help finding a birthday present Fast as I'm going to be tied up the next couple weeks. She likes "toys" like remote control cars, helicopters, preferably that she can build herself. I got her a helicopter last year and a remote controlled car kit already so those ideas are out. She has a basic arduino kit and is always looking for a new project. She also likes cool gadgets for cooking, grilling. And she's into all kinds of music. She has an iPod, iPad, a Mac, a PC (several, actually). I'd like to keep it under $150 if possible. Your ideas would be most appreciated!
I would like to learn more about electronics and circuitry by making a LED light panel. I have questions about how to calculate the number of LEDs I need, soldering, and how to diffuse the light. [more inside]
I need advice choosing electronic device/s to perform 2 different tasks (e-books and streaming music from an external HD to Surround sound receiver) [more inside]
I'm interested in making a strong faraday cage device to protect my stuff, one that is walk-in. [more inside]
I have an Olevia LCD TV bought in 2008. For about a week, it would have no sound on any input after being turned on but a quick power cycle would fix it. Now it's stone-cold dead. No glowing LED on the power button like normal and it is definitely plugged in properly to a live outlet. What should I do now? [more inside]
I'd like a splitter/dongle that I can plug an HDMI cable into that will pass video onto a monitor, but will allow me to plug headphones in to capture the sound. Does something like this exist? [more inside]
What can I do with these old laptops? [more inside]
What ambient temperatures are safe for typical consumer electronic devices? [more inside]
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]
Back in the days of yore, my (almost) 77 year old father was quite the geek and maker, but never a programmer. Fast- forward to today and he can no longer work on big building projects and spends much of his time with his iPad and TV. We've been discussing what kinds of "doing" projects he'd like to work on, but the obvious contender of an Arduino is maybe a little difficult as I'm not in Australia to help him out with the programming side of things. What great projects have you known senior geeks to get into? [more inside]
What laws or rules govern automobile door locks in the United States? [more inside]
Please help me find a component photocell (photoconductor) that works well in the IR range. I'm trying to find a photocell that works in the micrometer wavelength range. The market is full of Cadmium Sulfide (CdS), but those peak at a little less than 1 micrometer wavelengths. [more inside]
My stereo needs more blinkenlights. Point me to some neat projects I can do. [more inside]
Does flipping a switch on and off rapidly damage electrical equipment? [more inside]
I am the proud new owner of a soldering iron. What are some good first projects? Must be cheap and at least marginally useful. Blinky lights are a plus! [more inside]
According to this post, electronics rule violations on planes won't really put my safety in jeopardy (by bringing the plan down or anything) but am I supposed to ignore blatant electronics usage during take-off and landing? [more inside]
Help me choose the right small HDTV. [more inside]
I've got a costume that incorporates LED lights cued to music. I need to re-setup the costume and am trying to find the best Arduino (if possible) tech for them. How do I do so? [more inside]