High Altitude Balloon Communications?
Trying to build a high altitude balloon that has the ability to communicate back real time altitude, temperature, pressure, coordinates, and hopefully a picture every 3-5 seconds (if possible). Range...
View ArticleI need ideas for a paper about an electronic circuit.
I am to write a 5 page paper about a useful electronic circuit that uses any one or combination of the following: capacitors, inductors, resistors, diodes, op amps, ic's, transistors. It is purely...
View ArticleMake Your own Conductive Ink
It might be useful for building circuits on bare perf board. If used for patching stuffed pc boards, check the temp tolerance of each part, because the ink, once applied, has to be baked at 90 C (195F)...
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My junk box Nixie clock, let me show you it.
submitted by smallscaleresearch [link][23 comments]
View ArticleJust stumbled upon this - using LEDs as variable caps
Circuit here gives the basic idea. Excuse my regrettable SPICE skills. The basic idea is this: hook up an LED backwards (use the cheapest, dimmest red LED you can find, they work best.) Establish a way...
View ArticleWhat's the best streaming player?
Well, there's more TV to watch than there is time for me to watch it and my hard drive is starting to die from 400 gigs worth of TV and movies. I'm looking to switch to a streaming player to take some...
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DIY pulse oximeter - easily ported to any embedded device
submitted by ArtistEngineer [link][4 comments]
View Articlewhat type of light source would you need to project through a small cheap LCD...
so i was just experimenting with DIY projectors and made a tiny iphone projector out of a box and a magnifying glass.you can see it hereand this is how bright it lookssurprisingly it works vary well....
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Electronic Language Translators - Portable Talking Language Translators
submitted by ezougaagaa [link][1 comment]
View ArticlePretty amazing Explanation on how LCD matrices work!
submitted by Mercfh [link][2 comments]
View ArticleNeed help with a 12v power issue
Where I work, we have these carts that have a 12v power system. They use a 3rd party monitor that takes a 12v input. However, these monitors are insanely expensive. We have a possible replacement that...
View ArticleQuick technical question
I was talking a recruiter today for a small company that I was thinking to apply and I asked her what kind of technical questions would I be encountering. She gave me this:If given a sine way with a...
View ArticleS8050 LOW VOLTAGE HIGH CURRENT SMALL SIGNAL NPN TRANSISTOR
submitted by doctorken [link][3 comments]
View ArticleWeird problem with volume reduction
Hey /r/electronics! I'm having a spot of trouble with what I thought would be a really easy hack... So I recently found a Bop-It (In case you don't know, it was a really popular toy in the 1990-2000's...
View ArticleCan some one direct me on how to create a current sensing circuit.
Thanks to anyone who can lend some advice, i've been looking this one over and over and i cant seem to find what i'm looking for, my understanding of electricity is high but my understanding of...
View ArticleLights work powered with PC USB but not USB wall adapter
I've got a set of GE G-35 christmas lights. I'm using an arduino to power them. When they're being powered from my computers USB port, all of my stuff works flawlessly. However, if I plug the USB cable...
View Article[Help] Analysing a filter in a guitar pedal cuircuit.
I'm trying to derive the transfer function for one stage of the circuit on the last page of this PDF from pin 5 to pin 7 (IC1b). If you'll notice, the opamp is powered by a single ended source (9v...
View ArticleI made a Nixie tube speedometer for my dad's 58' Thunderbird. Here is a video...
submitted by MrRollboto [link][comment]
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Can you critique my board design?
http://imgur.com/044m3This is the first board I've ever done, I'm sure there's plenty of room for improvement. It's a SPDIF to USB module, using a TAS1020b controller (U3) and DIR9001 SPDIF decoder...
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