hybridfree/eevblog-posts huggingface dataset:
Van Halen, M&Ms and Digikey - Page 1
Forum section: electronics / general

author: bombledmonk
author_rank: Regular Contributor
timestamp: March 07, 2013, 08:11:07 pm
content: I was watching a Digikey video today and immediately though about something I read a long time ago....From Snopes 'confirmed' true : Van Halen's standard performance contract contained a provision calling for them to be provided with a bowl of M&Ms, but with all the brown candies removed.Here's the nerd's answer.... too bad they didn't mention the legend...

author: ee851
author_rank: Regular Contributor
timestamp: March 07, 2013, 09:26:56 pm
content: That's nice. But the candy-sorting machine would be much more impressive if the machine sorted five candies per second.

author: SteigsdB
author_rank: Contributor
timestamp: March 07, 2013, 09:47:00 pm
content: Nifty machine. Would have been nice to have in the venue production office back in the day..Side note: The 'no brown M&M' clause was put into their rider just to check that it was actually being read.
Where has the grammar check gone? - Page 1
Forum section: electronics / general

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: March 06, 2013, 05:55:55 pm
content: Where

author: StubbornGreek
author_rank: Frequent Contributor
timestamp: March 06, 2013, 07:18:16 pm
content: Quote from: ErikTheNorwegian on March 06, 2013, 05:55:55 pmUse Firefox.

author: nukie
author_rank: Frequent Contributor
timestamp: March 07, 2013, 01:50:01 pm
content: Go back to school

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: March 07, 2013, 05:23:15 pm
content: Quote from: nukie on March 07, 2013, 01:50:01 pmNot everbody use english as primery language, i have 5 languages in my reportuar, english as number 4..

author: SeanB
author_rank: Super Contributor
timestamp: March 07, 2013, 05:48:45 pm
content: There is a big difference between UK English, US English and the other half dozen or so world dialects of English. It is a bit of a pain at times, which is why I always turn autocorrect off and often just read and look for typo's before posting ( get it wrong a lot as well, go figure.....) and then correct.

author: kfitch42
author_rank: Frequent Contributor
timestamp: March 07, 2013, 06:04:55 pm
content: Quote from: ErikTheNorwegian on March 07, 2013, 05:23:15 pmI appreciate that you looking for an automated tool to make your posts more intelligible to other English readers, but, in my experience, the output of grammar checkers tend to be less intelligible. I find this especially true for technical writing (like on this board) where the grammar checker will often guess wrong about what part of speech some technical word is. This can lead to the content of the message getting garbled.When I read a post with poor grammar I assume it to be a non-native English speaker, and read it a bit differently than a post with good grammar. When reading a post with proper grammar, but confused content, I assume the poster has no clue what they are talking about.Often a person's ability to follow the more arcane rules of grammar (e.g. when to use "well" vs "good") is used as a proxy measure of intelligence. This may have once been reasonable, but in today's global internet culture it is clearly wrong.

author: nukie
author_rank: Frequent Contributor
timestamp: March 08, 2013, 03:39:23 am
content: Sorry I was joking with me reply earlier please don't take it seriously.
Tiny Flyback Transformer - Page 1
Forum section: electronics / general

author: sonnytiger
author_rank: Frequent Contributor
timestamp: March 07, 2013, 03:00:18 am
content: Watched high1voltage1rules' video about the tiny one he found in a 5" black and white TV and I rememrebred the one I found in a small plasma globe I took apart a while ago. Rather interesting!Video:http://youtu.be/w0UHt5KvWAE

author: NiHaoMike
author_rank: Super Contributor
timestamp: March 07, 2013, 04:06:12 am
content: You can find really tiny flybacks in laptop screens (ones with CCFL backlights, of course).

author: sonnytiger
author_rank: Frequent Contributor
timestamp: March 07, 2013, 11:01:23 am
content: I was referring to flybacks of the look and type commonly found in tvs and the like, I suppose the inverter uses the flyback topology making it technically a flyback transformer.
Varactors - Page 1
Forum section: electronics / general

author: bradleytron
author_rank: Regular Contributor
timestamp: March 07, 2013, 03:12:15 am
content: Greetings everyone,Does anyone know if varactors can be cascaded to increase the effective capacitance range and what, if any, shortfalls will result.Thanks.

author: amspire
author_rank: Super Contributor
timestamp: March 07, 2013, 03:33:23 am
content: You put them in parallel to increase the capacitance, but there is no reason why it shouldn't work. If you don't need as much range as a typical varicap, you can use an ordinary diode or transistor junction. This means you can just use devices with a much higher capacitance. The varicaps are optimized for range and Q factor. Mosfets with the gate shorted to the source can have drain-source capacitances in the hundreds to thousands of pF and this capacitance will change with applied voltage.

author: bradleytron
author_rank: Regular Contributor
timestamp: March 07, 2013, 05:13:06 am
content: Thanks, I'll do some experimentation.
5MW Pulse Generator Linac  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 07, 2013, 07:51:34 pm
content: awesome video with a silly soundtrack

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 07, 2013, 07:59:31 pm
content: as dave says sex on a stick
Toner Reactive Foil (TRF) - Page 1
Forum section: electronics / general

author: snipersquad100
author_rank: Frequent Contributor
timestamp: March 05, 2013, 06:03:43 pm
content: Hi, does anyone know where I can get Toner Reactive Foil (TRF) and posts to the UK?

author: ecat
author_rank: Frequent Contributor
timestamp: March 05, 2013, 06:11:57 pm
content: Is this the sort of stuff you're after?http://www.coolcomponents.co.uk/catalog/silk-screen-white-foil-p-322.htmlhttp://www.coolcomponents.co.uk/catalog/green-foil-p-321.html

author: Mr Smiley
author_rank: Frequent Contributor
timestamp: March 05, 2013, 06:16:14 pm
content: Hi,I was looking around the UK for the green trf foil end of last year.What i did find was a place in Canada, that including postage was cheaper than anywhere here (UK)If i remember correctly it was delivered within a week of paying, from eBay.Just did a search, the people i got it from are herehttp://www.ebay.ca/itm/ws/eBayISAPI.dll?ViewItem&item=220951828727&ssPageName=ADME:L:OC:GB:3160And if the total including postage is less than £15 you don't pay import tax duty or tax and this is below that.Hope it helps, but as i said it was a lot cheaper than anywhere local.Mr Smiley

author: TerminalJack505
author_rank: Super Contributor
timestamp: March 05, 2013, 06:37:17 pm
content: I've seen similar stuff on art websites. If you're willing to experiment, you might try looking for the foil at a local arts and crafts store. They use it for making fancy homemade greeting cards and such. It looks like the same stuff I use for making circuit boards.

author: snipersquad100
author_rank: Frequent Contributor
timestamp: March 05, 2013, 06:55:47 pm
content: Thank you guys for your replys

author: notsob
author_rank: Frequent Contributor
timestamp: March 05, 2013, 11:11:23 pm
content: Try these guys or look for a UK agenthttp://www.pcbfx.com/main_site/pages/products/toner_foils.html
All-Spec.com Review - Page 1
Forum section: electronics / general

author: johnny diaz
author_rank: Contributor
timestamp: March 03, 2013, 12:14:18 am
content: Has anyone bought from all-spec.com? If so, how was your experience? Doing a quick search turned up mixed reviews.

author: Circuitous
author_rank: Unknown
timestamp: March 03, 2013, 02:20:53 am
content: I have ordered from them several times, no complaints at all.They shipped quickly, and I received what I ordered. Pricing is mixed, they often have the best prices but not always, so do some comparison. Mostly I purchased some Hakko tips and ESD stuff.

author: beaker353
author_rank: Unknown
timestamp: March 03, 2013, 02:48:17 am
content: I've ordered from them half a dozen times or so. Shipped quickly and accurately each time. They were the lowest price for the stuff I was looking for, but your mileage may vary.-EM

author: Corporate666
author_rank: Unknown
timestamp: March 04, 2013, 05:36:16 am
content: I ordered my ESD mats from them, they were great. They sent me an email to confirm order, then sent an email to confirm tracking. It showed up on time and in great condition. I'm happy - I'd buy from them again for sure.

author: Homer J Simpson
author_rank: Super Contributor
timestamp: March 04, 2013, 11:58:12 pm
content: A+Ordered multiple times.Prices are fair and shipping is fast.They were one of the cheapest prices on my Hakko FX951 and I had it in three days.

author: johnny diaz
author_rank: Contributor
timestamp: March 05, 2013, 03:47:39 am
content: I'd like to thank everyone for their feedback.

author: Colfaxmingo
author_rank: Contributor
timestamp: March 05, 2013, 02:22:13 pm
content: Orded from them a few times. Pleased so far.One thing I like is they send you all the MSDS sheets and other technical information, on real dead tree paper, with your order.I really appreciate this because I will order things and forget what the hell I just received.
Calibration in Mass - Page 1
Forum section: electronics / general

author: IvoS
author_rank: Frequent Contributor
timestamp: March 05, 2013, 11:46:43 pm
content: Can anyone suggest a place where to go to get my HP3478A calibrated in US Mass? Anyone here who can do it at home or afterwork?

author: w2aew
author_rank: Super Contributor
timestamp: March 06, 2013, 01:11:59 am
content: http://service-solutions.tektronix.com/locations/calibration-Boston.aspx
Curiosity switches over to backup computer after memory issue. - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: March 05, 2013, 08:36:17 am
content: As the title says.http://www.theverge.com/2013/3/4/4065180/mars-curiosity-rover-successfully-switches-over-to-backup-computer-after-memory-issueAlexander.
Any experience with freight fowarding agent for US ebay purchases - Page 1
Forum section: electronics / general

author: johnh
author_rank: Regular Contributor
timestamp: March 03, 2013, 11:04:05 pm
content: Does anybody have experience in using a freight forwarding agent for eBay purchases form the USA?

author: digsys
author_rank: Unknown
timestamp: March 03, 2013, 11:15:08 pm
content: After a lot of research I settled with shipito.compros: will consolidate, take pix, follow orders ie unpack and repack, very cheap, full on-line tracking, reliable, can opt for non-monthly feecons: big jump in price between v.cheap shipping options ($6-8 took 2 weeks+) and dearer options (~$40-65+ 3-4 days)advantages: most US companies will ship road usually free or v.cheap (can add 2-3 days though)I've used them for a few years, but not a "whole lot". Let me know if you have any questionsEdit: One thing to add. Avoid their California drop-point. They have much tighter TAX rules, and getting exemption can be a pain.

author: ivan747
author_rank: Super Contributor
timestamp: March 03, 2013, 11:19:16 pm
content: Well that depends on your geographical location. The one I use currently is very consistent with shipping times. You usually have the package in your hands one week after you order it. It's virtually the only way to get things delivered for cheap, as long as they are light. Heavy stuff drains your wallet at prices of $3.75 to $3 per pound, and we are not that far away from Florida.This is my post #747
Interesting pinout - Page 1
Forum section: electronics / general

author: AlphZeta
author_rank: Regular Contributor
timestamp: March 03, 2013, 07:01:19 pm
content: I was working on an old piece of equipment and it was using an AT45D041 (4Meg Flash). What is interesting about this chip is the pinout (seehttp://www.datasheetcatalog.org/datasheets/120/131280_DS.pdf). The SOIC packaging uses 28 pins, but 8 through 22 are all NCs.What puzzles me is why would any one design an 28 pin IC and leaves the right half all NC (take a look at the first page of the PDF you will understand what I am referring to)? Wouldn't it be easier and cheaper just make it a 14 pin device? It would still be pin-wise compatible. What am I missing?

author: SeanB
author_rank: Super Contributor
timestamp: March 03, 2013, 07:13:53 pm
content: Probably the internal die is too big to fit in the smaller leadpack, so they put it in one that fits, even though they have so many unused pins. The lower pin count frame has more metal inside the package, and probably they could not fit the internal spacing and route to the bonding pads on the die with the 14 pin leadframe. to fit. As well the other packages use less plastic filler and are thinner and thus lower cost.

author: AlphZeta
author_rank: Regular Contributor
timestamp: March 03, 2013, 08:22:19 pm
content: Code:Probably the internal die is too big to fit in the smaller leadpack, so they put it in one that fitsRight.... I forgot that this chip was manufactured at least 20 years ago and back then the dies were much larger. That totally makes sense!
More astronomy fun! Comet Panstarrs - Page 1
Forum section: electronics / general

author: Lightages
author_rank: Unknown
timestamp: March 05, 2013, 03:36:45 am
content: Tonight as Comet Panstarrs makes its way from the view of the southern hemisphere to the north, it keeps getting brighter and longer. Also look for the meteor in the upper right.

author: AlfBaz
author_rank: Super Contributor
timestamp: March 05, 2013, 10:33:59 am
content: Excellent photo Lightages!I once tried to take a stars photo. Drove all the way up the mountain to the middle of nowhere in the middle of the night. Wasn't until I got home that I realised the damn power lines where in the way.The light in the distant horizon is a far away town

author: Thor-Arne
author_rank: Unknown
timestamp: March 05, 2013, 12:18:38 pm
content: Oh, nice photos guys.
More great practical soldering lessons from Norcal715 - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: December 23, 2012, 08:37:17 pm
content: Greetings EEVBees:--Some more great diagnosis and soldering videos from Norcal715. I post these because not only are they interesting (to me at least), but I think they will help give people more confidence at soldering.-- Quick and dirty replacemet of SMD Caps ---Some good SMD work here. ---The Pace Soldering Tutorial Guy would have a heart attack."Happy for you to desoldering, please."Wun Hung Lo 1948 -Best RegardsClear Ether

author: andyturk
author_rank: Frequent Contributor
timestamp: December 23, 2012, 10:57:43 pm
content: It is nice work. But man, those solder boogers on the tip of his iron make me squirm.

author: nixxon
author_rank: Frequent Contributor
timestamp: March 01, 2013, 11:10:07 pm
content: Here is one gent without boogers on his equipment:http://youtu.be/M0wI-5YZQm4Through hole desoldering - terminal desoldering - pierced terminal desoldering - surface desoldering with flow desoldering -From 38:40 it is soldering without special adaptor equipment.The above mentioned video is really nice in particular regarding desoldering.This channel is super nice regarding soldering in general:https://www.youtube.com/user/paceworldwide?feature=plcpEDIT: Mark Siegel is the technician:https://www.youtube.com/user/MrMarcSiegel

author: nixxon
author_rank: Frequent Contributor
timestamp: March 01, 2013, 11:21:34 pm
content: Now, I hope this sucker will do the 60mmHg trick, and that solder will cling to the tip...http://www.aliexpress.com/item/Free-shipping-V-996PN-Electric-Desoldering-Gun-Pump-Solder-Sucker-Repair-Tool/538031653.html
Cheap Programmer For [  16F1503 Any Ideas ? ] - Page 1
Forum section: electronics / general

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:18:51 am
content: Guys ,I There a solution for cheaper way to program this .I see that only high end universal programmers have access to programming this .Might Be some ISP pickit2/3 etc ? .

author: ecat
author_rank: Frequent Contributor
timestamp: March 01, 2013, 10:13:55 am
content: Pickit 3 should workhttp://www.microchip.com/forums/m658918.aspxGoogle also found this interesting project which claims PIC16F1503 support but ymmvhttp://openprog.altervista.org/OP_eng.html

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: March 01, 2013, 10:36:40 am
content: Quote from: ecat on March 01, 2013, 10:13:55 amThanks Ecat ,I could use a pickit3 + external ziff type header and do the needful .i will work on the same .Thanks will pass this info to my customer .You are the man

author: notsob
author_rank: Frequent Contributor
timestamp: March 01, 2013, 10:43:27 am
content: amarbir this zif adaptor works with pickit programmershttp://www.sureelectronics.net/goods.php?id=22

author: amyk
author_rank: Super Contributor
timestamp: March 01, 2013, 10:50:38 am
content: The programming specification for that part is not that much different from the other PICs, so lack of listed support on an open-source programmer is either because it supports it and they haven't bothered to update the table, or it doesn't because no one has needed to program one, but it shouldn't be too hard to add the support for it in any case.

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: March 01, 2013, 12:21:15 pm
content: If your goal is to actuallyprograma PIC, the PICkit 2 or PICkit 3 or well-designed clones are the only answer worth considering.If you want to spend time troubleshooting andplaying witha programmer, then have a ball with any of the other options. The various programmers designed to work form serial or parallel ports are finicky (if you even have the necessary port) and will work only with a limited number of USB adapters. I have watched many people spend a lot of money and a huge amount of time trying to make a "cheap" programmer work without ever being able to actuallyprograma part.
Suggestions for a universal programmer? - Page 1
Forum section: electronics / general

author: Dago
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:03:08 am
content: Hey guys, I need to program an AT89C51 from Atmel. It has an 8bit parallel bus for programming the flash so I apparently need to find a parallel/universal programmer to program it. Any suggestions?I checked Farnell but all the universal programmers were quite expensive (like 250€ for the cheapest model). Plus I have no idea if they are any good. Cheapish (not homemade, this is for work) and good software support would be nice (Linux support even better but not required). Doesn't have to be that "universal", as long as I can program this specific processor but universality doesn't hurt, maybe I'll have use for it in the future.

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:14:11 am
content: Quote from: Dago on March 01, 2013, 09:03:08 amSir ,Budget And Where Do You Stay ? .

author: Dago
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:18:12 am
content: I'm in Finland and budget is not that critical, but over 200€ for a programmer sounds quite expensive so preferably less than that.

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:20:15 am
content: Quote from: Dago on March 01, 2013, 09:18:12 amHi ,Please check Autoelectric TL866CS On ebay And Order it ,Cheap and will do the job .If you want it really low cost go for SP200S .Cheers

author: iloveelectronics
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:27:13 am
content: Quote from: Dago on March 01, 2013, 09:18:12 amI have these for sale at a member discount in the Buy and Sell section. Please search as I'm not sure if we're allowed to post advertising links here.

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: March 01, 2013, 09:36:28 am
content: Quote from: iloveelectronics on March 01, 2013, 09:27:13 amWell,Unfortunately You did .Let Other People Also Sell Something Sometimes Sir ? .

author: Dago
author_rank: Frequent Contributor
timestamp: March 01, 2013, 10:55:37 am
content: Whoops, I just noticed this particular device is the AT89C51ED2 model which does have the regular ISP bus for programming so I won't need a new programmer. Thanks for the help anyway!
Funny electronics videos - Page 1
Forum section: electronics / general

author: hanndoddi
author_rank: Contributor
timestamp: March 09, 2013, 06:22:08 pm
content: This man is so funny i love his videos.https://www.youtube.com/user/msadaghd/videos?view=0enjoy

author: Bored@Work
author_rank: Super Contributor
timestamp: March 09, 2013, 06:30:33 pm
content: Quote from: hanndoddi on March 09, 2013, 06:22:08 pmPlease not that moron again :-(

author: hanndoddi
author_rank: Contributor
timestamp: March 09, 2013, 06:37:46 pm
content: i find him to be very funnyNice teardown videos to

author: Hydrawerk
author_rank: Super Contributor
timestamp: March 09, 2013, 06:47:58 pm
content: Check anotker crazy video from a guy in Czech Republic.https://www.youtube.com/user/DeironesThat's him:http://youtu.be/g_tiTeZq_YgThis is his most famous video, maybe you've already seen it:http://youtu.be/skAePZGgpAAWarning: It is fake.

author: c4757p
author_rank: Super Contributor
timestamp: March 09, 2013, 07:38:18 pm
content: Quote from: Hydrawerk on March 09, 2013, 06:47:58 pmRegardless of what everybody thinks about Mehdi, I think we can all agree that this guy is roughly one million times more annoying.
icl8083 - Page 1
Forum section: electronics / general

author: snipersquad100
author_rank: Frequent Contributor
timestamp: March 03, 2013, 04:03:23 pm
content: Hi, has anyone got the eagle libary file for a icl8083?

author: Monkeh
author_rank: Super Contributor
timestamp: March 03, 2013, 04:09:39 pm
content: It's a 14 PDIP. Make your own, the packages are there in ic-package.lbr.

author: snipersquad100
author_rank: Frequent Contributor
timestamp: March 03, 2013, 04:24:10 pm
content: How the hell do you do that. im a novis lol

author: Monkeh
author_rank: Super Contributor
timestamp: March 03, 2013, 04:32:08 pm
content: Quote from: snipersquad100 on March 03, 2013, 04:24:10 pmhttp://www.lucadentella.it/en/2012/05/31/eagle-copiare-elementi-tra-librerie/?utm_source=rss&utm_medium=rss&utm_campaign=eagle-copiare-elementi-tra-libreriehttp://dangerousprototypes.com/docs/Cadsoft_Eagle_how_to_make_parts_tutorialAnd so on.

author: snipersquad100
author_rank: Frequent Contributor
timestamp: March 03, 2013, 04:52:30 pm
content: Thank you Monkeh
PDF to Gerber - Page 1
Forum section: electronics / general

author: hanndoddi
author_rank: Contributor
timestamp: February 28, 2013, 02:32:42 am
content: Hello every one Þórarinn here from Iceland.In short i am looking for a way to convert PDF to Gerber file.I want to be able to take photos of PCB boards for exsaple (link below) and turn it into Gerber file for milling out PCB boards.http://www.electronics-lab.com/projects/audio/001/index.htmlI have no experiences with this so i was hoping i could get some advice with software and methods to use.

author: deephaven
author_rank: Frequent Contributor
timestamp: February 28, 2013, 11:05:58 am
content: For such a simple design, the easiest way is to use a cheap/free PCB CAD package and create the layout from scratch and then produce nice accurate Gerber files.

author: hanndoddi
author_rank: Contributor
timestamp: February 28, 2013, 03:00:50 pm
content: I do not plan to mass produce any thing, it is just that i have access to a milling machine at school and i want to see if it was possible.
Another new electronics irc - Page 1
Forum section: electronics / general

author: smashedProton
author_rank: Frequent Contributor
timestamp: February 28, 2013, 03:19:12 am
content: I have really enjoyed electronics related irc over the years. I took the liberty of embedding one into my portfolio website. Everyone is welcome, and technical questions are encouraged. Chat is excellent if you want instantaneous answers for your projects. My site will be up until my bandwidth gets throttled, or until my apu overheats. whichever happens first!
24HR board house recommendations? - Page 1
Forum section: electronics / general

author: Poe
author_rank: Frequent Contributor
timestamp: February 28, 2013, 01:41:21 am
content: Could anyone recommend a fast turn board house in North East America? We typically use Advanced Circuits for our proto boards, but this board violates a few of their 24hour service restrictions. Additionally, they're located across the country from us, so the transit adds a day.Thanks.

author: ivan747
author_rank: Super Contributor
timestamp: February 28, 2013, 01:45:30 am
content: You could help us by saying what state you live in.

author: Poe
author_rank: Frequent Contributor
timestamp: February 28, 2013, 01:57:53 am
content: Quote from: ivan747 on February 28, 2013, 01:45:30 amPennsylvania, Harrisburg.
Serial Data Generator HP/Agilent 8018A - Page 1
Forum section: electronics / general

author: metawops
author_rank: Newbie
timestamp: February 27, 2013, 09:29:56 pm
content: Folks,I just stumbled upon this cool video:The sequencer data was produced by an old, discontinued serial data generator made by HP, the model 8018A.Although this device seems to be still available via ebay and other sites that sell used electronics ... I was wondering: what would we use today to produce such a sequence of impulses?Are these kinds of devices still in production? How do they look today? What are they capable of?Or would we use a computer? An Arduino? What are your thoughts?Thanks,Stefan.

author: Harvs
author_rank: Super Contributor
timestamp: February 27, 2013, 11:16:17 pm
content: It would be very simple to generate a sequence like that with anything that has GPIO (i.e. a microcontroller, RPi etc.) To do it with a PC you'd either need to interface with a parrallel port, or use some other form of breakout, which would most likely come back to using a microcontroller as the easiest method.

author: Unknown
author_rank: Unknown
timestamp: February 27, 2013, 11:30:00 pm
content: For a modern equivalent (with frequencies into the GHz range) you would probably look at pattern/pulse generators. These are 'slightly' overkill for music generation, though. An arbitrary function generator might also be suitable.
Red 7-Segment display "wobbles" with low frequency sound? - Page 1
Forum section: electronics / general

author: FenderBender
author_rank: Super Contributor
timestamp: February 25, 2013, 11:16:37 pm
content: Okay sorry the title is a little confusing.I play trombone as a hobby. I was playing a bit the other day and as I was playing a low frequency tone my clock radio's display, a red 7-segment led display, appeared to "wobble". It was almost psychedelic. Literally the size of the numbers would grow and shrink (I think vertically).However, I only experienced this when I was the creator of such tones, as in I played the note from my mouth or sang a low tone.What am I experiencing here?

author: andyturk
author_rank: Frequent Contributor
timestamp: February 25, 2013, 11:24:35 pm
content: The clock probably has multiplexed digits--only one is on at once, but the rotation is too fast for your eyes to notice (usually). When you hum or toot your horn, your head actually vibrates and moves a little. Your eyes interpret the displacement as the display digits squirming around.

author: FenderBender
author_rank: Super Contributor
timestamp: February 25, 2013, 11:39:10 pm
content: I suspected something along those lines. Very freaky the first time it happened!

author: tom66
author_rank: Super Contributor
timestamp: February 26, 2013, 01:37:05 am
content: Most budget alarm clocks use a rather novel 50Hz multiplexed drive using the mains positive and negative to drive each half alternately.

author: amyk
author_rank: Super Contributor
timestamp: February 26, 2013, 06:39:34 pm
content: http://en.wikipedia.org/wiki/Infrasound#Suggested_relationship_to_ghost_sightingsYour eyeballs may have been resonating.Quote from: tom66 on February 26, 2013, 01:37:05 amThey also seem to be one of the only remaining applications of pMOS logic.

author: gxti
author_rank: Frequent Contributor
timestamp: February 27, 2013, 01:52:13 am
content: Pick up the clock and wave it around. The digits will appear to "lag" behind the body of the clock. Plus if it is indeed scanning at 50 or 60Hz, you should be able to see the flicker. I've noted the "wobble" on portable hand-held devices as well, like a telescope remote control.

author: FenderBender
author_rank: Super Contributor
timestamp: February 27, 2013, 02:51:20 am
content: Very intriguing, indeed.

author: aargee
author_rank: Frequent Contributor
timestamp: February 27, 2013, 07:20:08 am
content: It could be the sound pressure modulating those sacs of fluid called eyeballs, rather than the display.
cheaper lmd18201 - Page 1
Forum section: electronics / general

author: timbob
author_rank: Contributor
timestamp: March 02, 2013, 03:50:07 am
content: I'm working on project and was wondering if anyone knew of a cheaper lmd18201.here is the datasheet: (http://www.ti.com/lit/ds/snvs092c/snvs092c.pdf)it must still be able to do direction and brake. be able to handle 3A and handle 20v.
Flusso Canalizzatore Flux Capacitor PIC build  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: February 26, 2013, 06:26:19 pm
content: It’s based on a PIC12F675, with the running a bit of code that flashes the LEDs just like the movie.Now on to the hoverboard project…http://www.danilolarizza.com/flusso-canalizzatore-con-un-pic-12f675/
Is Rigol Promoting DS1052E Hack? - Page 1
Forum section: electronics / general

author: amspire
author_rank: Super Contributor
timestamp: February 24, 2013, 02:21:18 am
content: Interesting.Rigol's website is featuring Dave's blog on upgrading a DS1052E to a DS1102E.http://www.rigolna.com/products/digital-oscilloscopes/ds1000e/ds1102e/By the way, I love the precision of the rating for Dave's EEVblog #77 - 4.865546 - to 7 places even though there are about 50,000 views. Have they included the temperature coefficient in that? Dave must be really upset that it is not at least 4.865550

author: olsenn
author_rank: Frequent Contributor
timestamp: February 24, 2013, 02:45:55 am
content: Their website automatically adds videos with the product name in the title. If you uploaded a porno to YouTube and titled it "Rigol DS1052E Review" it would make its way to their site.

author: FenderBender
author_rank: Super Contributor
timestamp: February 25, 2013, 02:03:21 am
content: Quote from: olsenn on February 24, 2013, 02:45:55 am

author: cloudscapes
author_rank: Regular Contributor
timestamp: February 26, 2013, 12:55:07 am
content: Does the hack still work or has it been patched up?Thinking about getting a scope to replace/add to my cheap 25MHz owon. 50MHz isn't a worthwhile step up for me, but the price of the 100MHz is a difference of $150.

author: psycho0815
author_rank: Regular Contributor
timestamp: February 26, 2013, 12:39:30 pm
content: The original hack has been patched, but there's a new one described here on the Forum and it's even easier.

author: Hydrawerk
author_rank: Super Contributor
timestamp: February 26, 2013, 01:24:33 pm
content: Oh, it is not easy to find any porn on youtube.http://youtu.be/JF8BRvqGCNs
Sorting Forum Search Results - Page 1
Forum section: electronics / general

author: UPI
author_rank: Regular Contributor
timestamp: February 23, 2013, 04:31:03 pm
content: How do you sort the forum search results by date?

author: UPI
author_rank: Regular Contributor
timestamp: February 25, 2013, 04:48:40 pm
content: Am I overlooking an obvious way to sort search results by date?

author: baljemmett
author_rank: Unknown
timestamp: February 25, 2013, 04:56:09 pm
content: If you ignore the search box at top-right, and instead use the Search option from the toolbar-like thingy in the header (Home, Help, Search etc.), there's anAdvanced Searchlink that includes an option to change the sort order of the results.(Not the most obvious thing in the world, though, much like the rest of SMF's search behaviour!)

author: UPI
author_rank: Regular Contributor
timestamp: February 25, 2013, 05:00:35 pm
content: Thanks!I'm glad it is somewhat buried so that I don't look like a complete moron (only a partial moron).

author: EEVblog
author_rank: Unknown
timestamp: February 26, 2013, 01:55:46 am
content: Quote from: baljemmett on February 25, 2013, 04:56:09 pmYes, I think that search box only look at the current board you are in or something like that. Doesn't seem to work nearly as well as the search option in the menu.Dave.
Ham Radio Technician Course: Plymouth, MA  - Page 1
Forum section: electronics / general

author: Mr J
author_rank: Regular Contributor
timestamp: February 24, 2013, 05:29:36 am
content: Hello All,It that time again, we have a Tentative Technician Course Set-up for the spring of 2013.FRI April 5 ; 7pm to 9pmSAT April 6 ; 9am to 2pmSAT April 7 ; 9am to 2pmTesting SAT April 7 2pm to 4pm (All license classes)Location: TBD (Plymouth,MA area)So far we have two students signed up, I would like to get at least 6 to run this course. If you know any prospective HAM please please pass this info along. Please Email me at n1ir@arrl.netCJ, N1IR
Can anyone explain ? - Page 1
Forum section: electronics / general

author: Jane
author_rank: Frequent Contributor
timestamp: February 23, 2013, 08:11:51 am
content: Datasheet for a CPU says about a pinVCXO PLL Power Supply pinand about the otherPLL Power Supply pinCan anyone explain what VCXO and PLL are used for?Thank you

author: Jimmy
author_rank: Regular Contributor
timestamp: February 23, 2013, 08:34:33 am
content: VCXO = Voltage Controlled Crystal Oscillator

author: TerminalJack505
author_rank: Super Contributor
timestamp: February 23, 2013, 08:58:01 am
content: Quote from: Jimmy on February 23, 2013, 08:34:33 amAnd a PLL is a Phase Locked Loop. The CPU likely has a PLL so that it can internally generate a frequency that is a multiple of the external crystal. An 80MHz clock can be generated internally from a 10MHz crystal, for example.

author: Kremmen
author_rank: Super Contributor
timestamp: February 23, 2013, 04:25:37 pm
content: As the guys say. One point of a PLL is that you can generate significant frequencies from a much lower one; for instance just now i have a Spartan-6 FPGA on a breadboard under development. From a 12 MHz crystal it can generate internal clocks well beyond 100 MHz using a PLL and programmable dividers. After a certain limit i guess crystals will become impractical as baseband frequency sources, so you will want to use some kind of multiplication scheme. A PLL is one and works very well.

author: TerraHertz
author_rank: Super Contributor
timestamp: February 24, 2013, 11:06:09 am
content: Above are correct. But another important point is that both VXCO and PLLs are extremely sensitive to power supply noise and variations. Hence these pins are brought out separately and MUST be provided with well filtered clean and very stable voltages. You may find that the grounds for these circuits are also brought out separately, and the same cautions apply.Typically you'd have a separate small IC linear regulator just for these rails, with R-C or L-C low pass isolation from everything else on the board. And they'd better be as close to the chip as possible, AND use their own RF-isolated ground plane segment.
Electronic shop in Istanbul? - Page 1
Forum section: electronics / general

author: sorin
author_rank: Frequent Contributor
timestamp: February 24, 2013, 12:54:57 am
content: I will visit Istanbul next month,Does anyone know a electronic shop here?thank you.

author: Unknown
author_rank: Unknown
timestamp: February 24, 2013, 06:53:37 am
content: Most electronics shops in Istanbul are clustered in Karaköy district which is right in the middle of the tourist area, right at the foot of the Galata bridge.http://wikimapia.org/21319001/ebed-han-karak%C3%B6y-elektronik%C3%A7iler-%C3%A7ar%C5%9F%C4%B1s%C4%B1This place is big and old (1902). Consists of 4 buildings connected in a labyrinth like fashion with the weirdest entrances imaginable. Hard to spot from the main street. 20+ shops inside, mainly discreet components and semiconductors. Caters mostly to students and amateurs. Don't forget to check the upper floors, the specialist guys are up there.Pics here:http://www.fotokritik.com/1989201/abed-hanhttp://www.fotokritik.com/2079639/abed-hanhttp://www.whereist.com/mer-abed-han/http://forum.donanimhaber.com/m_39618213/tm.htmhttp://wikimapia.org/15300202/tr/Selanik-Pasaj%C4%B1Right across the street from the previous place. 10+ shops inside. Used to be the go to place for test and measurement equipment, not any more though. These days they cater to the light and sound repair biz.http://wikimapia.org/25047836/tr/G%C3%BCr-HanShort walk from the previous two. Used to be the radio and ham center of Istanbul. Now just a couple of dusty shops an a few offices doing project work. Only if you got time to kill.Also this place on the Asian side. Mostly computer stuff but some electronics too. Worth a look if you are already in Asia.http://wikimapia.org/14667740/tr/Yaz%C4%B1c%C4%B1o%C4%9Flu-%C4%B0%C5%9F-Han%C4%B1Some notes:- Beware of the fake components! Know how to identify what you are buying.- Everything is in stock (not)! If the guy you are buying from does not have a particular part in stock he will just buy from the next shop, apply extra 50% profit and sell it to you. Be careful.- Use cash, the local variety. There are couple of shops I would trust with my credit card, the rest I won't.- Do not drive in the old city, there is nowhere to park! Use public transport or better yet walk, there is a lot to see anyway.

author: sorin
author_rank: Frequent Contributor
timestamp: February 27, 2013, 01:03:49 am
content: thanks for your detailed reply
Ohms law calculator slide chart. Can you still buy them? - Page 1
Forum section: electronics / general

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: February 25, 2013, 05:11:24 am
content: http://www.ebay.com.au/itm/1941-WWII-OHMITE-OHMS-LAW-CALCULATOR-SLIDE-RULE-1000-OHMS-CHICAGO-IL-VOLTS-WATT-/310598217045?pt=LH_DefaultDomain_0&hash=item485118ad55Was wondering if you can still get them brand new.

author: Unknown
author_rank: Unknown
timestamp: February 26, 2013, 08:26:56 pm
content: Old for New are around but very hard to find... looking around I found this URL in Canada,electronics are under Exotic Slide Rules, as far I can tell.Page below, look for: Hemmi/Sun 266 Electronic Engineering 10" Duplex Ruleshttp://www.sphere.bc.ca/test/exotic.htmlthis page has some electronic rules, however their highly priced and sold-out; however if you keep a keen eyeon this site, you could get lucky.Here is the main page for all there slide rules:http://www.sphere.bc.ca/test/sliderule.html

author: SLJ
author_rank: Frequent Contributor
timestamp: February 26, 2013, 08:38:48 pm
content: I've only seen the wheel charts for resister color code available new in the past few years.They do turn up frequently on ebay though.Here's a few of mine:www.stevenjohnson.com/cardboard

author: Lightages
author_rank: Unknown
timestamp: February 26, 2013, 10:05:39 pm
content: You might be able to find something like this a bit easier:http://www.atsi.ca/images/eevblog/RS_OHMS_FRONT.jpghttp://www.atsi.ca/images/eevblog/RS_OHMS_BACK.jpghttp://www.atsi.ca/images/eevblog/RS_OHMS_SLIDE_FRONT.jpghttp://www.atsi.ca/images/eevblog/RS_OHMS_SLIDE_BACK.jpgOr you can just print out these images and have them laminated and make you own!There is also the Pickett N-515-T which was made for the Cleveland Institute of Electronics and they are much easier to find:http://www.sliderule.ca/pickett.htmscroll down a bit to find the N515-T
Looking for cheaper blue tooth module - Page 1
Forum section: electronics / general

author: timbob
author_rank: Contributor
timestamp: February 23, 2013, 03:33:55 am
content: Hi, I am working on a project for school that uses blue tooth to send data from one microcontroller to another microcontroller. the cheapest blue tooth module i have found were thesehttp://www.parallax.com/StoreSearchResults/tabid/768/List/0/SortField/4/ProductID/890/Default.aspx?txtSearch=blue+tooth. i was wondering if any one knew of a cheaper blue tooth module.

author: jabramo
author_rank: Regular Contributor
timestamp: February 23, 2013, 03:45:15 am
content: http://www.ebay.com/itm/Arduino-Wireless-Serial-4-Pin-Bluetooth-RF-Transceiver-Module-RS232-Backplane-/150893897657?pt=LH_DefaultDomain_0&hash=item2321fa27b9Will that suffice?

author: Smokey
author_rank: Super Contributor
timestamp: February 23, 2013, 08:35:20 am
content: Nice. Link Bookmarked.Under 8USD shipped. Seriously. I love China sometimes.

author: timbob
author_rank: Contributor
timestamp: February 23, 2013, 08:40:11 am
content: I'm looking for one that if I sell my Project, I can keep go back to and order more. but for test it will do. thankyou

author: kripton2035
author_rank: Super Contributor
timestamp: February 23, 2013, 09:26:44 am
content: when you buy in china, the deal is that you buy 20% more to repair if it fails ...if it fails too much you loose, if it does not fail you win !the modules from parallax or others come from china too but they do the repair so that explains the high pricealso the characteristics of the module is not mandatory the same you must have some tries.

author: daveshah
author_rank: Unknown
timestamp: February 23, 2013, 10:59:17 am
content: I have used a module like that, and MCU-PC communication worked very well; however, MCU-MCU communication may not be possible and requires some hacking.A better way might be with these two modules:Master:http://www.ebay.com/itm/New-MIni-3-3V-wireless-Bluetooth-Transceiver-Master-Module-Serial-Port-30ft-TTL-/261053250441?pt=LH_DefaultDomain_0&hash=item3cc7fc7b89Slave:http://www.ebay.com/itm/New-Mini-3-3V-wireless-Bluetooth-Transceiver-Slave-Module-Serial-Port-30ft-TTL-/261053259306?pt=LH_DefaultDomain_0&hash=item3cc7fc9e2a

author: mswhin63
author_rank: Frequent Contributor
timestamp: February 23, 2013, 11:44:04 am
content: I am currently using these modules for my Astro-photography right this moment. They work a treat. I have been using these for about 2 years without skipping a beat.Quote from: daveshah on February 23, 2013, 10:59:17 am
Photo-voltaic window glass - Page 1
Forum section: electronics / general

author: ampdoctor
author_rank: Frequent Contributor
timestamp: February 22, 2013, 11:36:52 pm
content: Don't know if this has been posted here before but looks interesting at first blush at least. And to take the next step, would this technology be applicable to other building materials and residential applications. Like many of the latest and greatest "green" inventions, I wonder if it's actual performance will approach the hype.http://www.guardian.co.uk/environment/2013/feb/12/printed-solar-glass-panels-oxford-photovoltaics
handy Smartphone electonics apps - Page 1
Forum section: electronics / general

author: hanndoddi
author_rank: Contributor
timestamp: February 22, 2013, 10:26:54 am
content: Hey so i just got a android smartphone.i found these appshttps://play.google.com/store/apps/details?id=it.android.demi.elettronicahttps://play.google.com/store/apps/details?id=jerzy.cow.code.ee.sandscanWhat are you guys using? how do you like the apps? and so on...
Flukes 65th Anniversary Promo - Page 1
Forum section: electronics / general

author: Pat Pending
author_rank: Regular Contributor
timestamp: February 22, 2013, 10:40:07 pm
content: http://www.fluke.com/fluke/usen/WheretoBuy/promotions/promo-multi/65-years-best-in-test-promo-a-2013.htm?utm_source=FLUKE&utm_medium=HPCAROSEL&utm_content=POS1&utm_campaign=BESTTEST2013Not quite free stuff, but a sweetener if you are in the market for Fluke gear.

author: haveissues
author_rank: Contributor
timestamp: February 23, 2013, 01:19:25 am
content: My fluke 62 IR thermometer just showed up today from that promo. Took about a month.

author: FenderBender
author_rank: Super Contributor
timestamp: February 23, 2013, 03:47:30 am
content: I think the Fluke 62 offer is pretty much the only one I'd consider.

author: Bored@Work
author_rank: Super Contributor
timestamp: February 23, 2013, 07:08:24 am
content: The usual limitationsQuote
DC555, a discrete 555 - Page 1
Forum section: electronics / general

author: nitro2k01
author_rank: Frequent Contributor
timestamp: February 22, 2013, 02:17:38 am
content: Do you think the humble 555 timer is too compact or too accurate? Do you find the pin spacing of a DIP 555 to be just too small for your needs? Or have you wished that you could lift the hood off and look inside?Enter the DC555, a discrete version of the age-old chip. It's yours for only 1500 yen, about US$16.I think Dave should buy this kit and compare it to the real deal in various circuits.http://cart06.lolipop.jp/LA01994087/?mode=ITEM2&p_id=PR00102220444

author: BravoV
author_rank: Super Contributor
timestamp: February 22, 2013, 02:41:59 am
content: I think they should add these at their ad :- Much-much higher source/sink current capability than your ancestor's 555.- Should you blew up the output transistors, you could easily replace it with beefier one with lower Vce sat version rather than have to replace the whole IC. Think green.- Improve accuracy ? No big deal, just replace the 3 voltage divider resistors with higher precision & lower temp co version, you will have an "elite" version of 555.

author: Psi
author_rank: Super Contributor
timestamp: February 22, 2013, 02:54:54 am
content: Next up... a 555 timer out of vacuum tubes.Better clear off the kitchen table to make room.

author: Gall
author_rank: Frequent Contributor
timestamp: February 22, 2013, 08:35:26 am
content: Why not use these?