If you have an Ikea desk and your LED optical mouse doesn't work right (something about the optics of the varnish) this should fix it: It was really annoying to be tweaking a PCB layout and having the...
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Cześć! Dawno mnie tu nie było, ale hobby z racji tego że chińczyk robi taniej i lepiej przestałem bawić się w lutowanie, ale chyba będzie czas wrócić do hobby. Ponieważ nie jestem w stanie...
Es besteht dringender Bedarf, diese Sicherheit faktisch zu klären! In den letzten Tagen wurde nämlich per Behauptung dargelegt, das neue PhotoTAN-Verfahren sei unsicherer als beispw. das ältere...
I've got a big chunk of AA, AAA, and some C NiMh cells of varying ages... I'd love to be able to get a reading of how much charge they're still able to hold... My info on this is decades out of date,...
Hello everybody! Есть плата от китайцев - Alinx AX309. На борту - Spartan-6, SDRAM 32Mb и всякая мелочевка. Испытываю нетерпение и...
Hello out there, just asking for inspiration. I have a simulation which executes commands - everything ok. But now the program should also communicate with external hardware via a serial connection...
Hi there I am no electronics geek And I am wondering whether it is possible to get a C motor circuit without relays (may be using transistors) Innocent
I've found where Wikipedia has this technology filed: PDFs in the references are very interesting. This summarises one of the scientific tests and also reveals the waveform of another system. 10V 3us...
I'm in the process of shfiting a board using Atmel's atiny13 to the atiny25. The at25 is causing lots of trouble. First hassle was getting the at25 to accept the "program enable" command. There was no...
We make a gadget that's powered by a 12 volt wart, and sometimes a user applies 24 and blows one up. We have a polyfuse and a 12 volt TVS and they sometimes fry the TVS. It's posssible that most any...
I want to process the signals of five electret condenser microphones with raspberry pi and i since the RPI has no audio inputs im thinking of using a sound card. Im looking for a sound card with five...
Hi! I just moved to an apartment and wanted to keep my radio in the bathroom, same as I did in the last place I lived. Only problem with this place is that the main electrical drop to the building is...
I'm thinking of making a Set Theory Clock display for a desk clock and using LEDs for its display. This needs a selection of rectangular red and yellow LEDs, both small stackable ones that could be...
I have some 7-segment displays I'd like to drive from a uP output...the segments have a common cathode. 5 volt digital outputs from the uP are available, and the red LED segments have a forward...
I am trying to create a project much like like a Marquee sign, I want to be able to control hundreds of LEDs from a set of chips. From my research I found the 74HC595 chip and using a bunch of these...
I have a Weller soldering gun & the tip burned through. Not having a spare, I took a piece of 12ga copper wire and improvised (I know, it won't last long). I find it so fiddly to get the ends bent...
Any good solutions to keep the dust out? Anyone doing anything along those lines - and how's it working? I have a desktop that's less than a year old and is packed with dust already. I can't make the...
Friends of mine have a Samsung 55" 4K TV, model UN55HU6840 (about 2014). They say they can hear audio, but the screen is black. I'd like to take a shot at fixing it for them since they don't really...
Do you know of some open hardware that runs officialy openwrt? I'll try to...
Hi all, I am currently working on a range-switched photodiode design for use in...
I am thinking to build electronics beacons for both outdoor and traveling. After...
To generate frequencies from approximately 0.5 mHz to 12 MHz with a DDS a...
Hello, I'm having some issues getting this little guy to run: The site says this...
When I moved house about five years ago, I stupidly left my motor mower in the...
Have any of you noticed that your remote control, for a tv or whatever, doesn't...
I have a Meyer Sound 833 control unit on my bench. It has a weird fault that...
This Schumacher 1042A-PE battery charger stopped functioning today. It seemed to...
I replaced the ballast and fluorescent tubes in a bathroom fixture with LED...
I have been given a number of 7x5 dot matrix display segments. There are 7 pins...
So, I've learned the hard way that it isn't trivial to solder a LED matrix. I've...
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