hybridfree/eevblog-posts huggingface dataset:
A great multitester teardown suggestion for Dave... - Page 1
Forum section: electronics / general

author: N2IXK
author_rank: Frequent Contributor
timestamp: October 22, 2012, 11:36:54 pm
content: 8 Function Electronic Multitool on page 2http://www.flutterby.com/images/2012/10/01/hf_tool_sale.pdfDying to know if they have proper input protection on the paternity test ranges....

author: robrenz
author_rank: Super Contributor
timestamp: October 22, 2012, 11:50:25 pm
content: Thanks, I have not laughed that hard in a long time.

author: bullet308
author_rank: Frequent Contributor
timestamp: October 23, 2012, 02:36:47 am
content: Too true to be funny. Well, almost.

author: Jimmy the Squid
author_rank: Regular Contributor
timestamp: October 23, 2012, 02:57:39 am
content: Uh oh. I feel kinda dorky now for buying a few giant plastic jars full of bungee cords. Hey they really could come in handy...

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 23, 2012, 03:07:18 am
content: heheheh.... Nice catalog!

author: ModemHead
author_rank: Frequent Contributor
timestamp: October 23, 2012, 03:18:51 am
content: Quote from: N2IXK on October 22, 2012, 11:36:54 pmI'd like to know where you put those probes to perform the paternity test.... on second thought, maybe not.

author: GabYoung92
author_rank: Regular Contributor
timestamp: October 23, 2012, 03:25:56 am
content: 18 Volt cordless hammer? Where do I buy? haha

author: bullet308
author_rank: Frequent Contributor
timestamp: October 23, 2012, 04:22:07 am
content: BTW, for those who are not familiar with that great US retailer of questionable tools and industrial-ish supplies from the Peoples Republic of You-Know-Who, here is a link to some of there stuff I just got today, with some samples attached...http://widgets.harborfreight.com/wswidgets/common/displayCoupon.do?main=true&hdr=mag&week=more_coupons&campaign=weekly&page=more_coupons.html

author: N2IXK
author_rank: Frequent Contributor
timestamp: October 23, 2012, 12:12:07 pm
content: Quote from: ModemHead on October 23, 2012, 03:18:51 amThe thing's truly got something for everyone. Not many users are ever going to need both the paternity tester AND the gaydar, right?

author: c4757p
author_rank: Super Contributor
timestamp: October 23, 2012, 02:30:19 pm
content: Holy crap that's amazing. Nice find.
The Holy Grail of Solar Power (AIRCON!) - Page 1
Forum section: electronics / general

author: bullet308
author_rank: Frequent Contributor
timestamp: October 23, 2012, 11:51:47 am
content: Though, the claim in the video that this constitutes "free" air conditioning is a bit of a stretch...And, it would take two of these to properly cool my house.But still...http://www.treehugger.com/sustainable-product-design/affordable-solar-powered-air-conditioning-finally-here-coming-us-market-soon.html
Learning RF -  Online Class Recommendations - Page 1
Forum section: electronics / general

author: prenato
author_rank: Regular Contributor
timestamp: October 18, 2012, 06:52:26 pm
content: I've been working as an Electronics Engineer for several years now, but RF design is not something I've been exposed to much. I do have an interest in it from an hobbyist perspective; perhaps could lead to more... Are there any fundamentals online courses you would recommend? I know that several universities post complete lectures theses days and was looking for recommendations from the users in this forum. A mix of theoretical and practical would be great. I have time to learn this since it's not my primary job:) I understand it can take years to get half decent at it.Thanks in advance for any recommendations.Paulo

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: October 18, 2012, 08:07:26 pm
content: Quote from: prenato on October 18, 2012, 06:52:26 pmHave a look at any amateur radio course or textbook, skipping the basic electronics that you already know. Concentrate on the chapters on receivers, transmitters and antennas.'Experimental Methods for RF design' is an excellent book to buy and is practically oriented.Definitely get your amateur radio licence.Search for 'homebrew QRP' for a choice of hundreds of simple transmitters and receivers to build.Comprehensive websites that are effectively online courses include those maintained by VK2TIP and Talking Electronics.

author: prenato
author_rank: Regular Contributor
timestamp: October 18, 2012, 11:06:58 pm
content: Thanks for your recommendations vk3yedotcom! I will look into those books/sites for sure.I'm also looking for video classes online since there is so much content on youtube these days and it's a powerful way of learning (I took a power electronics course that way)... If anyone can recommend one for RF, I would appreciate it.

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: October 22, 2012, 09:06:01 am
content: Paulo - check out this series from the Australian Radio & Electronics School, starting with Part 1Some of the homebrew equipment and antenna descriptions on my channel could also be useful.Peter

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 22, 2012, 07:09:12 pm
content: I would find a local Radio ham, we are a friendly bunch , he would probably pass on RF knowledge, or join a local radio ham club, and get your ticket , it great fun

author: Blofeld
author_rank: Regular Contributor
timestamp: October 22, 2012, 09:09:58 pm
content: RF has always been some sort of black magic for me. But I know a place where you can find a lot of information:http://www.rfcafe.com/In fact, some might say too much information....
Researchers crack Daveland state transport system, get free rides - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: October 22, 2012, 03:15:35 pm
content: "Shoddy customised cryptography by a state rail outfit has been busted by a group of Australian researchers who were able to replicate cards to get free rides. The flaws in the decades-old custom cryptographic scheme were busted using a few hundred dollars' worth of equipment. The unnamed transport outfit will hold its breath until a scheduled upgrade to see the holes fixed."http://www.scmagazine.com.au/News/320026,researchers-crack-aussie-state-transport-system-get-free-rides.aspx

author: tom66
author_rank: Super Contributor
timestamp: October 22, 2012, 03:25:01 pm
content: Reminds me of my laundry system here at university.We have cards which we top up using a code given to us after paying £10 (minimum.) We go to a machine, enter the code, and the card is topped up.Of course they are not networked, so how does it do it? It stores two bytes on the card for the top up amount.So with a readily available smart card reader, you can add as much top up as you like.Also, the online form has a drop down menu for selecting the top up amount, with a minimum of £10. It is possible to edit the form data, and set the minimum to as little as 1p. No input checking from the application.
Free EE College Courses - Corsera - Tremendous - Stupendous - Colossal - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 21, 2012, 08:10:02 am
content: Greetings EEVBees:--Holy Mackerel! What a tremendous resource! I am signing up for the free MOSFET course from Colombia University. Please see the below links for information about Coursera, which provides free access to some of the best College Courses in the World, and not just EE by any means.https://www.coursera.org/[Home Page]https://www.coursera.org/category/ee[Electrical Materials And Engineering Schedule]https://www.coursera.org/course/eefun[Fundamentals Of Electrical Engineering - Don H. Johnson - Rice University - Calculus Recommended]https://www.coursera.org/course/mosfet[MOSFET Transistors - Yannis Tsividis - Colombia University - Calculus Recommended]--In order to prevent citizens from being ripped off by fly by night education scams, the Minnesota Office of Higher Education, has decided that residents will not be permitted to obtain free courses from institutions like Colombia, Stanford and Switzerland's École Polytechnique Fédérale de Lausanne, under the auspices of Corsera.--No word yet as to what the Education Nazis have in mind for citizens who dare to obtain free education, other than Big Mother.http://www.theregister.co.uk/2012/10/19/minnesota_bans_free_online_education/"In the first place, God made idiots. That was for practice. Then he made school boards."Mark Twain (Samuel Langhorne Clemens ) 1835 - 1910Best RegardsClear Ether

author: SeanB
author_rank: Super Contributor
timestamp: October 21, 2012, 09:45:37 am
content: Pournelle's Law of Bureaucracy strikes again.There is no Government that could not be improved by firing half the staff. The trick is to fire the half that are dispensable, and lose half the departments as well.
Altzone channel: A ghostly figure in a video - Page 1
Forum section: electronics / general

author: Sfolter
author_rank: Newbie
timestamp: October 21, 2012, 12:32:26 am
content: Hey guys, this is my first post here and I am sorry that I had to open one hole topic on this, but I am very curious about the ghostly figure that runs through the background at43th second. It casts shadow on the floor, despite that I can not see light above this point. It is like a human who is walking as I can see from the shadow but maybe is a little fast. So I am sorry if it is some mirroring on the lens or whatever you like but I want to see what are you thinking.

author: EEVblog
author_rank: Unknown
timestamp: October 21, 2012, 12:35:26 am
content: That's just someone walking past in the corridor. There are lights in the corridor.Dave.

author: tom66
author_rank: Super Contributor
timestamp: October 21, 2012, 12:43:48 am
content: Almost enough for a Most Haunted investigation of your building, Dave.

author: notsob
author_rank: Frequent Contributor
timestamp: October 21, 2012, 01:02:41 am
content: Here's a shadow

author: eliocor
author_rank: Unknown
timestamp: October 21, 2012, 01:33:08 am
content: simply a translucent separator

author: EEVblog
author_rank: Unknown
timestamp: October 21, 2012, 07:51:38 am
content: Quote from: tom66 on October 21, 2012, 12:43:48 amI do know one the heads of the UFO & paranormal research society of Australia.They can come and do a sweep with their ELF meter or something!Dave.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 21, 2012, 09:17:33 am
content: ghosts dont like electromagnets.

author: EEVblog
author_rank: Unknown
timestamp: October 21, 2012, 09:25:32 am
content: Quote from: Mechatrommer on October 21, 2012, 09:17:33 amand they hate this:Dave.

author: Sionyn
author_rank: Frequent Contributor
timestamp: October 21, 2012, 09:40:12 am
content: apperentily spectral activity is dependant on how gullible you are

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 21, 2012, 04:40:36 pm
content: Surely its someone walking behind the camera and reflecting off the glass panel , Most haunted now that's a comedy show, and the mediums, if there were ghosts I can't imagine they'd want to talk to an idiot like the ones seen on that program, famous oscar winning line , From Derek Achora "Mary likes Dick" , enough said
AT&T Video Archives on Youtube - Page 1
Forum section: electronics / general

author: david77
author_rank: Frequent Contributor
timestamp: October 20, 2012, 10:35:42 pm
content: Just spent the evening watching the AT&T Archives:https://www.youtube.com/user/ATTTechChannel/videos?sort=dd&flow=grid&view=0&page=1For everybody interested in telecomms stuff.I'm actually old enough to remember dial phones, state owned phone company and the klicky sound of the Strowger switches on the phone lines.
Simple 2-Lines Serial Comm Decoder App for DS1052E - Page 1
Forum section: electronics / general

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2012, 07:19:08 am
content: quickly slap this thing together for recent tinkering...

author: ElektroQuark
author_rank: Unknown
timestamp: October 20, 2012, 08:45:24 am
content: Good work!You are truly making the RIGOL even better purchase.

author: AndyC_772
author_rank: Super Contributor
timestamp: October 20, 2012, 09:11:50 am
content: That's pretty cool. UART and I2C options to follow?

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2012, 09:21:12 am
content: Quote from: AndyC_772 on October 20, 2012, 09:11:50 amshould be already possible (though i need to look up the details on those protocol). all the App will do is to look at what level CH2 (data) is when clock is rising or falling (based on user option box input at the bottom) and start accumulating bits from there. word of caution, this is a one day slap in, so there's no robust error handling esp GUI, you put alphabet in textbox expecting numbers, it will be disgraced (quit) so treat with care, though if there's functional bug such as error decoding bits or clocking feel free to highlight (i'll concentrate on decoding functionality first). thanks.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2012, 09:27:14 am
content: the major limitation i think is it only works on short 600 bytes memory per channel while the dso is running (not stopped or single triggered which enable long memory capture 16K or 2M). so but... its by design, only suitable for data that can be fit in the dso monitor at one time. implementing long memory will complicate significantly, so until then, sorry
Beckman CircuitMate 9020 - Teardown - Page 1
Forum section: electronics / general

author: kolbep
author_rank: Frequent Contributor
timestamp: October 19, 2012, 08:34:48 pm
content: Had the Oscilloscope open (both channels were not working)Found the AC/DC Coupling Switches blown to bits (somebody had tried to scope mains)Bypassed the switches, as I really only need AC Coupling for now.Took Pics of the Open set for anybody interested (Old School Electronics Porn):http://www.flickr.com/photos/kolbepeter/sets/72157631807433461/

author: zaoka
author_rank: Frequent Contributor
timestamp: October 19, 2012, 09:00:12 pm
content: These were sold under Voltcraft name as well.

author: N2IXK
author_rank: Frequent Contributor
timestamp: October 20, 2012, 01:36:41 am
content: Is that a deflection yoke around the CRT neck? Never saw a scope that used a magnetic deflection CRT....

author: SeanB
author_rank: Super Contributor
timestamp: October 20, 2012, 05:37:59 am
content: That coil is to do trace rotation, to compensate for ambient magnetic fields. Used to get the trace aligned with the graticule.

author: kolbep
author_rank: Frequent Contributor
timestamp: October 20, 2012, 06:23:29 am
content: I put the scope on top of a speaker cabinet when trying to use it. There was at least 30cm between the scope and the speaker driver, and the trace went about 45degree diagonal!. Had to balance it on a cardboard box to increase the spacing by another 30cm. Then it came right. Very sensitive thing.
Underwater camera for cheap ? - Page 1
Forum section: electronics / general

author: ptricks
author_rank: Frequent Contributor
timestamp: October 20, 2012, 04:07:24 pm
content: I recall Dave saying he worked with sonar and I know that takes a lot of waterproofing so today I saw this camera on ebay. Seems like a deal, waterproof to 20M, shockproof, 1080P HD video, G sensor and more. Wondering what Dave or others with marine experience think ?http://www.ebay.com/itm/Oregon-Scientific-ATC-9K-Full-1080P-HD-Water-Resistant-Action-Camera-w-G-Force-/190735189886?forcev4exp=true&forceRpt=true#ht_4904wt_1139

author: peter.mitchell
author_rank: Super Contributor
timestamp: October 20, 2012, 05:41:41 pm
content: you'd want to hope the o-ring on the back flap is good. Also, gosh it is damn ugly.

author: Polossatik
author_rank: Frequent Contributor
timestamp: October 20, 2012, 06:13:20 pm
content: that stuff is launched in 2010 i think, that is a lifetime + eternity in the world of camera's.I looks it's totally useless besides in bright sunlight from remarks on amazonIt's more expensive, but why not go for the gopro camera's? there is a reason why everyone uses thoseedit: 200 usd on amazon:http://www.amazon.com/GoPro-HD-HERO2-Outdoor-Edition/dp/B005WY3TI4/ref=pd_cp_p_2
Solder iron tips - Page 1
Forum section: electronics / general

author: ee851
author_rank: Regular Contributor
timestamp: October 18, 2012, 06:50:28 pm
content: Does anybody remember which EEVblog episode where Daverecommends solder iron tips ? I need to order chisel tips for my iron and can't find my notes.Which size chisel tips do I need for through-hole parts? SMD?

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 18, 2012, 07:09:24 pm
content: Look for the soldering tutorial parts one to three or how to set up an electronics lab:http://www.eevblog.com/episodes/

author: Simon
author_rank: Unknown
timestamp: October 18, 2012, 07:11:03 pm
content: Quote from: ee851 on October 18, 2012, 06:50:28 pm1mm will do SMD nicely (SOIC/SOP) 2-3mm for dip/dil

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 18, 2012, 07:16:23 pm
content: ops... Forgot the info. Sorry. I don't like to use chisel for smd, I find mini wave easier. But that's a matter of getting used to it.

author: ee851
author_rank: Regular Contributor
timestamp: October 19, 2012, 02:22:36 am
content: Thank you, gentlemen.

author: poptones
author_rank: Frequent Contributor
timestamp: October 19, 2012, 02:27:38 am
content: So... did anyone hear about the rabbi who didn't charge for circumcisions?He only got tips...

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 19, 2012, 02:45:37 am
content: Quote from: poptones on October 19, 2012, 02:27:38 amheheh.... Good!
Thanks Dave!! - Page 1
Forum section: electronics / general

author: timcki
author_rank: Contributor
timestamp: October 22, 2012, 01:35:00 am
content: Hey Dave, thanks!!Just fixed my first lcd monitor.Saw what to look for from your videos.You are the Greatest!!Tim

author: bullet308
author_rank: Frequent Contributor
timestamp: October 22, 2012, 01:57:49 am
content: Actually, you should be thanking Capxon et al for putting out all of those awful electrolytics for you to play with.People ask, "Hey, you want this old LCD monitor? Wont power up for some reason. Its only five years old or so."And my reply? Well, it certainly is never "no". Thus, my LDC monitor inventory is maintained. :-)
Never Mind Solar Cars...How About Solar Highways?  - Page 1
Forum section: electronics / general

author: bullet308
author_rank: Frequent Contributor
timestamp: October 18, 2012, 08:51:15 pm
content: Here 'ya go...

author: bullet308
author_rank: Frequent Contributor
timestamp: October 19, 2012, 04:14:00 am
content: Well, crap, that didn't go very well. Lets try this again, shall we?http://www.upworthy.com/could-america-be-1-again-with-this-crazy-invention?c=ufb1

author: mariush
author_rank: Super Contributor
timestamp: October 19, 2012, 04:30:21 am
content: my 2 cents...On the road, probably not. As a roof about 5-7 meter above the road (15-20 feet?) maybe.on road : problem related to changing the surface friction, reflections (they cover that at around 1:20 in the video) if certain cells get broken they'd be hard to replace without interrupting traffic, issues with ice/snow during winter, with salt and whatever is used to prevent ice, issues with paint for road signs on the cells bla blahas a roof ... on one hand lower visibility for the drivers during the day, but on the other hand drivers won't have the sun in their eyes anymore. less rain, ice whatever on the road ... theoretically, because actually covering the road may get the roads colder during the winters as whatever sun is there no longer heats them during the day.Lack of light may be a non issue if small spaces are left between solar cells at certain intervals or if there's some led lightning used on the bottom of the solar cells.broken panels could be easily replaced and cleaned using simple cranes by the side of the roads

author: mariush
author_rank: Super Contributor
timestamp: October 19, 2012, 07:03:49 am
content: You'd need high currents to charge capacitors that big in cars, and you'd get lots of sparks when the wire touches the "chicken wire" above. Not enough contact to actually transfer a lot of power without arcing and eating away the contacts, I think.They did some experiments with buses in Shanghai.. yeah, here's a slide :http://www.slideshare.net/ResearchIndia/super-capacitor-buses-in-shanghai-5156990See page 18 for results, which are not so promising... turns out all buses failed possibly due to overheating of the ultra caps due to the climate...Otherwise, they were able run for 3 to 8 miles with a full charge at max speed of 44 Km/h , could charge half way in 30 seconds... You could argue a car is much lighter than a bus, but I don't know how much space the ultra caps in the bus take.
Hitachi V-1065A scope... - Page 1
Forum section: electronics / general

author: dtvonly
author_rank: Newbie
timestamp: October 17, 2012, 03:53:23 pm
content: Hi. I thought that this scope has a single shot trigger mode - where the scope will capture and retain the waveform on the screen for further analysis. The manual clearly mentioned the use of the Single/Reset in conjunction with the Normal mode to achieve this function. So far the simple 1kHz test wave simply flashed by then disappears. Could someone who is more used to this scope help me with this single-shot wave form capture feature in the V-1065A? Thank you.the V-1065A can be viewed here:http://nice.kaze.com/V-1585-65-60-V-695-OM-Schematics-English.pdf(the attachment is too large)

author: robrenz
author_rank: Super Contributor
timestamp: October 17, 2012, 04:13:48 pm
content: Single sweep on an analog scope does not mean it stores the sweep. Unless it is an analog storage scope(which this isnt) you need a repetative signal to display a signal.

author: w2aew
author_rank: Super Contributor
timestamp: October 18, 2012, 02:37:47 am
content: Many analog scopes have the ability to perform single-shot triggering, even though they don't have any storage capability. This feature was used (back in the day) with an oscilloscope camera mounted to the CRT. The camera would be used to capture the single trace. There were some analog scopes that had an analog storage feature, but these were not nearly as popular as those without the persistent phosphor feature.

author: EEVblog
author_rank: Unknown
timestamp: October 18, 2012, 03:28:54 am
content: As the others said, it's not designed to store the signal. Very few analog scopes have storage.Probably the majority of modern analog scopes have such a single shot mode.Sometimes if you turn the brightness right up and you have a slow decay phosphor, you can see the signal for long enough.A modern digital camera makes it easy to capture such a signal though.Dave.
My Multi - Page 1
Forum section: electronics / general

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 19, 2012, 01:22:04 pm
content: Not sure how these rated with Dave , but I do like it very much, approx £104 UKIdeal Alphatek 61-322 Platinum Pro Multimeter Digital & TRMS MultimetersCategory Features:Auto/manual rangingLarge digital displayMin/maxData HoldCapacitanceFrequencyIsolated battery compartmentAuto power offLow battery indicationProbe holderRubber boot with tilt standOverload protection on all rangesCAT III - 1000VLifetime limited warrantyFeatures:True RMSMin/MaxData HoldBuy Digital & TRMS Multimeters Ideal 61-322 Platinum Pro Multimeter from ISSWWW, the leading supplier in the UK

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 19, 2012, 01:32:40 pm
content: I like to have frequency on portable meters but mine is 10MHz only, this one seems to be very good.

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 19, 2012, 01:42:58 pm
content: Quote from: ablacon64 on October 19, 2012, 01:32:40 pmIf I'm reading it right this one is 6.000m60.00MHZ, think it will last my hobby electronics

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 19, 2012, 01:56:28 pm
content: Interesting, specs say it's 40MHz.

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 19, 2012, 02:16:04 pm
content: Quote from: ablacon64 on October 19, 2012, 01:56:28 pmThat is as mines saying 60Mhz, hmmmmmmmm strange, does your specs say Cat 3I wonder is this the latest generation bought it this morning.

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 19, 2012, 02:21:26 pm
content: Quote from: M0BSW on October 19, 2012, 02:16:04 pmhttp://isswww.co.uk/datasheets/Platinum_Pro_320_Series.pdfview for your self, middle row on specs

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 19, 2012, 02:38:58 pm
content: Yes, you're right, I saw and ebay ad and the specs were 40 MHz, I guess the seller messed it up.

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 19, 2012, 03:10:15 pm
content: Quote from: ablacon64 on October 19, 2012, 02:38:58 pmHe'll lose money Ishould think, I had to double check just incase I read it wrong.
iphone critics - SNL skit - enjoy - Page 1
Forum section: electronics / general

author: Nirios
author_rank: Regular Contributor
timestamp: October 16, 2012, 10:14:55 pm
content: ..do diabetes count..

author: poptones
author_rank: Frequent Contributor
timestamp: October 17, 2012, 02:38:10 am
content: Well, might as well...http://youtu.be/YvyZxE_JDww

author: george graves
author_rank: Super Contributor
timestamp: October 17, 2012, 03:06:28 am
content: Are any of the names of the tech bloggers a spoof on real people? I wish they had included the two from mashable that did that magazine tear down!

author: peter.mitchell
author_rank: Super Contributor
timestamp: October 17, 2012, 09:10:30 am
content: I'm more of a fan of this style of video, it seems less offensive to the people who work in those places.

author: george graves
author_rank: Super Contributor
timestamp: October 17, 2012, 10:42:24 am
content: "less offensive to the people who work in those places."?!?!?I know humor is lost on most engineers - but the point of the SNL skit was to point out the.....oh never mind....
What should one charge for contracting services? - Page 1
Forum section: electronics / general

author: jt
author_rank: Regular Contributor
timestamp: October 17, 2012, 02:35:52 am
content: Hello All,I am currently working as a Hardware Design Engineer and have been approached a couple of times to do some contracting on the side. I really have no idea how I should quote an hourly rate and was hoping you could give me a few data points.I imagine there is a significant range based on the nature of the work and the experience of the contractor. Perhaps there is a rule of thumb for calculating the rate as a function of ones annual salary? For simplicity lets assume there is no overhead other than time invested.Let me know if I'm omitting any critical details - I'm new to this and I don't really have any basis to work from.Thanks!

author: Psi
author_rank: Super Contributor
timestamp: October 17, 2012, 03:13:08 am
content: Depends what country your in.

author: EEVblog
author_rank: Unknown
timestamp: October 17, 2012, 04:57:48 am
content: You need to tell us what country and state you are in, and what field of engineering for starters.As a ballpark, typical casual rates might be $100-$150/hr for both Australia and the US.Could be higher for niche stuff.And you'd up the rates for companies you know will pay more and/or are desperateDave.

author: jt
author_rank: Regular Contributor
timestamp: October 17, 2012, 05:15:06 am
content: Thanks guys. I'm in the U.S., specifically California.My field is Hardware design/Electronics; embedded systems and analog front end stuff. I've worked in both the Medical and Aerospace field. I'd consider myself competent in design and layout. I also have ~1000+ hours of smt soldering experience so I'd be comfortable with prototype assembly. I'd steer away from anything requiring software development of significant complexity, unless I recruited some additional help.
Where can I find firmware updates for my DS1052E oscilloscope? - Page 1
Forum section: electronics / general

author: m.Alin
author_rank: Newbie
timestamp: October 16, 2012, 11:48:27 am
content: I've bought a Rigol DS1052E about a year ago. The current firmware version on my 'scope is 00.02.05 SP2. I'm sure that by now Rigol must have updated the firmware for this DSO, but I can't seem to find it anywhere on their site. How can I find out what is the current version of the firmware and download it?I wrote to Rigol through their Contact form on their site, but they didn't reply yet.

author: Galenbo
author_rank: Super Contributor
timestamp: October 16, 2012, 11:54:47 am
content: Quote from: m.Alin on October 16, 2012, 11:48:27 amWhere did you get this information?Or is it just an assumption based on experience with android toys?

author: m.Alin
author_rank: Newbie
timestamp: October 16, 2012, 01:53:06 pm
content: It could very well be a sensible assumption. But I've read on the net about newer versions of the firmware; for example, seehttps://www.eevblog.com/forum/general-chat/rigol-ds1052e-new-firmware/.
Laptop DC Extension lead - Page 1
Forum section: electronics / general

author: steaky1212
author_rank: Regular Contributor
timestamp: October 16, 2012, 09:09:08 am
content: Hi,I was wondering if anyone could help me.I've got a project where I need to monitor the current consumption of a laptop, but I dont want to cut the laptop wire.I've looked at non-contact methods, but they leave a lot to be desired when my dynamic range is 0-3A, but I also need mA resolution.I've built a circuit up using the same op-amp (MAX4238) Dave uses in the uCurrent and my circuit works like a dream - only I have to bodge the connections to the jack and laptop.Does anyone know of a DC extension lead that I can cut for my circuit? The laptop is a new HP Probook with the 3 conenctions on the DC jack (power, ground and a data connection for identifying the charger).Thanks in advanced,Steaky

author: G7PSK
author_rank: Super Contributor
timestamp: October 16, 2012, 11:05:58 am
content: You can get cheap power supplies from ebay that you could cut up. A power supply is cheaper than the replacement socket and I do not know where to get the plug. The socket is around the £24-00 mark and a power supply around £6-00.

author: peter.mitchell
author_rank: Super Contributor
timestamp: October 16, 2012, 01:08:10 pm
content: A few things;A laptop will charge its battery when the charger is plugged in, so you will probably have top wait until the battery is full, however, even then i think they do some weird balancing between battery and AC adapter. You could try with the battery out, but some laptops don't power on without it.

author: sacherjj
author_rank: Frequent Contributor
timestamp: October 16, 2012, 01:23:37 pm
content: I know that Dell has one for their travel adapters. It allows the small portable adapter to stretch further. You can also pick up one of the generic laptop power adapters that should be pretty easy to cut into, as the ends are changeable. You might be able to just solder to the correct tip.I have to follow along the comments of the others about AC power and charging. However, you will get close if you power the laptop by ONLY is AC adapter. i.e. remove the battery. This will still be higher drain than the drain from the battery, as the AC adapter is a bit higher voltage than the battery and you will have charge and voltage drop regulation (that may or may not be very efficient as it is on the AC side.) Usually it is 12V or more for the adapter and 9-10V for the laptop battery.
Drops on Drops on Drops - Page 1
Forum section: electronics / general

author: Hypernova
author_rank: Unknown
timestamp: October 16, 2012, 11:08:45 am
content: Crazyhttp://physicsbuzz.physicscentral.com/2012/10/drops-on-drops-on-drops.html

author: Rerouter
author_rank: Super Contributor
timestamp: October 16, 2012, 11:33:47 am
content: the question in my mind is how much is the mild detergent they added influencing this effect, being as that in effect would alter the surface tension, or if only in the droplets the density,

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 16, 2012, 01:07:36 pm
content: Very interesting video! Also an interesting question, I'd like to see the experiment with no detergent.
Agilent 2/3000X firmware downgrade possible? - Page 1
Forum section: electronics / general

author: benemorius
author_rank: Regular Contributor
timestamp: October 15, 2012, 05:37:30 pm
content: Has anyone downgraded the firmware successfully on one of Agilent's new 2/3000X scopes? I just tried downgrading from 2.00.2011101301 to 1.10.2011031600 and I'm getting "Error: The file did not load correctly."Of course, I would re-download the file or verify the md5 signature, but the older firmware versions don't appear to be available for download anywhere and Agilent does not have md5 hashes posted for any versions.

author: grenert
author_rank: Frequent Contributor
timestamp: October 16, 2012, 12:30:29 am
content: Why not just give them a call? Good support is one of the reasons why Agilent stuff costs more
Changing career from IT to EE? - Page 1
Forum section: electronics / general

author: snoopen
author_rank: Contributor
timestamp: October 17, 2012, 12:55:45 am
content: Hi guys,Maybe I'm coming undone and about to lose all my screws but I've been contemplating changing my career from IT specialist to something Electronics related. I've always had an interest in electronics but got distracted by computers while I was at high school. Now I'm 30 with 7 years experience in my role and have become the go-to guy. Realising that this is more a job than a career I feel like I need a change and do something I can be passionate about.I've looked at BA Electrical Engineering at Newcastle Uni (NSW) which is probably 8 years or so part time. TAFE seems to be the more viable path with some shorter courses offered.The picture I have in my head at the moment is that I'd eventually end up working in a team repairing equipment, designing products, or developing code (so long as I still get to work hands on with the electronics goodness). I like the extra low voltage stuff... higher voltage makes me nervous.So I have a few questions really:Are the TAFE courses fairly decent? Anyone studied there?I've seen only a few on Seek (AU job site) but are there many job offers for programmers or those without formal electronics education to move into electronics? It there a better place to look than Seek?Does anyone have any similar experience to share?Looking forward to any thoughts,Scott
Natural habitat - Page 1
Forum section: electronics / general

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 15, 2012, 01:31:38 am
content: hahahahah... Good one!

author: SeanB
author_rank: Super Contributor
timestamp: October 15, 2012, 04:57:23 am
content: They forgot the do not feed sign.........

author: miceuz
author_rank: Frequent Contributor
timestamp: October 15, 2012, 06:48:17 am
content: Quote from: SeanB on October 15, 2012, 04:57:23 amno, you are totally allowed to silently leave the food near the cage

author: G7PSK
author_rank: Super Contributor
timestamp: October 15, 2012, 07:33:12 am
content: Needs a commentary by David Attenborough.

author: Bored@Work
author_rank: Super Contributor
timestamp: October 15, 2012, 08:00:58 am
content: Never trust such signs. That is clearly not a natural, but artificial engineering habitat. Clearly a school setup so engineering puppies are not frighted by the real word outside the cage. If you ask nicely they might allow you to take one home.

author: saturation
author_rank: Super Contributor
timestamp: October 15, 2012, 11:27:22 am
content: This is a natural habitat:

author: Achilles
author_rank: Regular Contributor
timestamp: October 15, 2012, 12:21:08 pm
content: Quote from: saturation on October 15, 2012, 11:27:22 amYeeeeep, that looks more like real nature. Well, you have to keep in mind that the trend for showing species in their natural environment is not equally developed. Therefore some places show more realistic environments than others. At least they din't show a Blank table with a breadboard.... so a lot improved herePS: I love the etype convertible there. With all the stuff around: do you want to build a ray-gun to grow it up?

author: peter.mitchell
author_rank: Super Contributor
timestamp: October 15, 2012, 02:07:43 pm
content: needs more stuff on the floor - remember, the floor is the biggest shelf in the room.

author: saturation
author_rank: Super Contributor
timestamp: October 15, 2012, 02:43:20 pm
content: Yes, for the best in mess, its Bob Pease, both friends BTW and both past away within 6 months of each other.http://www.edn.com/design/analog/4375963/Slideshow--Remembering-Jim-Williams-and-Bob-Pease?page=1Quote from: peter.mitchell on October 15, 2012, 02:07:43 pmMore here:http://www.eetimes.com/electronics-blogs/social-mania-blog/4217103/How-messy-is-your-desk-
(2X) Black Pry Stick Probe Pick Wedge Tool Spudger Plastic Hook Soldering Solder - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 15, 2012, 06:46:20 am
content: Greetings EEVBees:--The latest from Honorable Uncle Lo. Notice in the description it says:"Product Condition: Tested (All functions WORKS 100%) ... Spudger Repair Tool ESD Safe Stick. soldering tool will help you form component leads, probe circuit cards and chase wire and leads."http://www.ebay.com/itm/2X-Black-Pry-Stick-Probe-Pick-Wedge-Tool-Spudger-Plastic-Hook-Soldering-Solder-/350603675712?pt=Other_Tablet_eReader_Accessories&hash=item51a19b8840--So no need to update the firmware on this extremely versatile device, which doubles as a probe, chases wire leads (don't know if it catches any though), and, even does something with solder, apparently. This product is perhaps even more versitile than Uncle's Green Desoldering Foam, which is pink and functions like copper wick, see link and picture below.https://www.eevblog.com/forum/general-chat/peculiar-offerings-from-wun-hung-lo-green-desoldering-foam/msg93940/#msg9394--Johnny Carson once had a spoof commercial for a children's toy - "The Amazing Stick" - you can shoot it like a rifle, use it as a bow and arrow, ride it like a horse, etc."Happy for you to desoldering, please."Wun Hung Lo 1948 -Best RegardsClear Ether

author: amyk
author_rank: Super Contributor
timestamp: October 15, 2012, 07:18:49 am
content: I think it's a matter of vendors trying to cram as many keywords as they can into their product title.Occasionally you find ones that rhyme:http://www.ebay.com/itm/Spudger-Repair-Opening-Kit-Metal-Nylon-Black-Stick-Soldering-Tool-Pry-Bar-Pick-/270874052251(Intended for opening and repairing spudgers?)
National Identity - Page 1
Forum section: electronics / general

author: bullet308
author_rank: Frequent Contributor
timestamp: October 15, 2012, 12:39:28 am
content: Hi:Among the many other things I have done in my various careers, I taught US History to sixteen year olds for a few years, and remain certified to teach secondary social studies here in the state of South Carolina. I never got around to teaching anything else in that field other than US History, but could have taught World History, Geography, Econ and American Government (among other things) well enough.I am also an American and (reasonably, usually) pretty proud of it, but really work hard at maintaining a relatively global perspective on things and take such considerations as culture, history and geography into account when trying to understand how people think and feel on various topics.But, I have a bit of a problem here...a fairly large percentage of the participants on this forum do not have any clear indication showing as to their nation of origin. This, combined with their using various vague nom de plumes instead of real names, leave me wondering sometimes just what in the hell somebody is thinking or feeling and why. I have my little American flag flying proudly (enough) next to my "handle" and avatar partially so you can know that I am writing from a US perspective so you can take that into account when considering arguments and formulating responses.If you do not have a comparable little flag flying yourself, why not?TIA

author: GeoffS
author_rank: Unknown
timestamp: October 15, 2012, 01:25:39 am
content: This has been discussed at some length, here's one thread on the subjecthttps://www.eevblog.com/forum/general-chat/where-the-bloody-hell-are-you/msg45220/#msg45220
ustream irc printer - Page 1
Forum section: electronics / general

author: methanol
author_rank: Newbie
timestamp: October 14, 2012, 05:31:22 pm
content: Hi Dave,you mentioned on your last live show that the questions asked on irc has to be printed via an old style serial printer.Luckily I have modified some of my existing ircbot code and came up with this.It connects you automaticly to ustream's irc and filters all questions starting with a Q: or q:Just modify line 122 and write your printer code on line 90.I hope this will help you.- Timohttps://github.com/methanol/pyree
iPhone Under Water 6 Months - Still Works - Uh, Except For The Sound - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 12, 2012, 06:30:24 am
content: Greetings EEVBees:--See below article from The Register.http://www.reghardware.com/2012/10/11/six_months_in_lake_and_iphone_still_works/--Personally, I generally prefer my phone to have sound, before I say it works."This 'telephone' has too many shortcomings to be seriously considered as a means of communication. The device is inherently of no value to us."Western Union telegraph company memo, 1877.Best RegardsClear Ether

author: poptones
author_rank: Frequent Contributor
timestamp: October 12, 2012, 06:32:58 am
content: Apparently speaker failure in those things is common. I know someone who handles their support and she mentioned this jsut the other day.By the same token, they are incredibly loud. Especially given such tiny speakers.

author: firewalker
author_rank: Super Contributor
timestamp: October 12, 2012, 06:39:14 am
content: Six months? Is this phone coated with an antifouling? It could be trapped in a thick mud pocket that protected it though. Or the lake was cold enough to prevent fouling, or a dead lake. But... He saw it an recovered it. TBH this story smells like a bad fish.Alexander.

author: tom66
author_rank: Super Contributor
timestamp: October 12, 2012, 08:18:33 am
content: Reminds me of this...

author: tom66
author_rank: Super Contributor
timestamp: October 12, 2012, 08:56:15 am
content: If you want to see something quite surprising:

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: October 12, 2012, 10:19:56 am
content: These phones are fairly well sealed. I wouldn't be surprised if an air pocket was trapped inside the chassis that protected the electronics.

author: Achilles
author_rank: Regular Contributor
timestamp: October 13, 2012, 07:24:42 pm
content: Quote from: tom66 on October 12, 2012, 08:56:15 amYepp, Toughbooks are great. A friend of mine used one for years when he went mapping in the Amazon. After work he just cleaned off the mud with a shower.For workshops and tough environment really not a bad choice (and used, old ones, not that expensive anymore)

author: Sionyn
author_rank: Frequent Contributor
timestamp: October 13, 2012, 09:05:54 pm
content: leo laporte water treated iphone didn't last a second
Kickstarter crosses pond for UK projects On 0ct 31 - Page 1
Forum section: electronics / general

author: Noize
author_rank: Regular Contributor
timestamp: October 17, 2012, 12:46:07 am
content: Wicked!http://www.bit-tech.net/news/gaming/2012/10/15/kickstarter-crosses-pond-for-uk-projects/1

author: EEVblog
author_rank: Unknown
timestamp: October 17, 2012, 05:29:40 am
content: What about Australia (not Austria)?Dave.

author: Bored@Work
author_rank: Super Contributor
timestamp: October 17, 2012, 07:36:29 am
content: So did they run out of backing fools in the US?
Michael Faraday's famous apparatus - video link - Page 1
Forum section: electronics / general

author: ee851
author_rank: Regular Contributor
timestamp: October 12, 2012, 02:46:57 pm
content: If you have studied electricity and magnetism, you will recognize the name Michael Faraday.This morning I found this video. It contains the simplest explanation of Michael Faraday's observations that I have ever heard. Well, it seems simple now. Was quite a revelation in his time, no doubt.http://www.cbsnews.com/8301-504784_162-57529953-10391705/watch-and-learn-a-little-about-electromagnetic-induction-or-how-well-finally-get-hoverboards/?tag=stumbleuponThe modern apparatus in the video is even more impressive. Thought you might enjoy a look.
Odd voltage regulator types - Page 1
Forum section: electronics / general

author: ptricks
author_rank: Frequent Contributor
timestamp: October 15, 2012, 05:32:17 pm
content: While looking through a catalog I noticed a series of regulators with voltages like 3.38 and 1.73, what are these type of regulators used for. The current limit was around 3A for the devices and I was wondering what needs 3.38 that can't take 3.3v ?

author: Short Circuit
author_rank: Frequent Contributor
timestamp: October 15, 2012, 05:51:18 pm
content: From the LT1585CM-3.38 datasheetQuoteWasn't that hard to find
My best bargin of the week - Page 1
Forum section: electronics / general

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 10, 2012, 05:23:09 pm
content: I bought these 7 segment green displays made by RS in the USA & they have the pin outs printed on the back of the box, I 'm going to use them for a frequency display project I have in mind, or a bench power supply.any the price for all 5 was £2.00p UK bargin.What a silly old fool I am I didn't put the bloody picture up, it is now sorry.

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 10, 2012, 06:21:58 pm
content: Lucky you! In Brazil each one of those is R$ 22.00, about £ 7.00. It would be like £ 35.00!

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 10, 2012, 06:27:26 pm
content: Quote from: ablacon64 on October 10, 2012, 06:21:58 pmHe obivously no idea what he was selling, that's just how I like it

author: poorchava
author_rank: Super Contributor
timestamp: October 10, 2012, 06:48:04 pm
content: Maybe it's a stupid question, but what's so special about those displays? Other than not baing made in china.

author: M0BSW
author_rank: Frequent Contributor
timestamp: October 10, 2012, 06:52:56 pm
content: Quote from: poorchava on October 10, 2012, 06:48:04 pmWell there just right for a winter project,saved me lots of money in the process, only a bargin if you need them which I do, as Dave would say "go figure"
Need some help to find female angle header in Mouser - Page 1
Forum section: electronics / general

author: senso
author_rank: Frequent Contributor
timestamp: October 10, 2012, 11:14:35 pm
content: Good night, I have been searching Mouser up and down to find some 2.54mm/100mil pitch female headers with 6 sockets/holes, with a 90º angle/horizontal, the only thing resembling them is this:http://pt.mouser.com/ProductDetail/Harwin/M20-7890642/?qs=sGAEpiMZZMtsLRyDR9nM1%252bmess1WSkgVWugg0UiRLWA%3dWhat I would like tho buy is this style of header but with 6 sockets instead of 2:Thanks in advance.

author: notsob
author_rank: Frequent Contributor
timestamp: October 10, 2012, 11:41:42 pm
content: http://futurlec.com/ConnHead.shtmlhave 2,4,6 & 8 pin RA ones, check delivery timesUnless you need heaps of them, buy 40 pin ones and cut them to any size you need, you lose 1 pin slot when you snip them to size, then tidy up the break edge

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 10, 2012, 11:55:22 pm
content: Quote from: notsob on October 10, 2012, 11:41:42 pmNot good looking after the cut on this type of connectors even if you file it, unless you want to spend considerable amount of time.I recommend to buy the correct size.David.