hybridfree/eevblog-posts huggingface dataset:
Crappy/Dangerous Hardware Thread - Page 1
Forum section: electronics / general

author: Neuromodulator
author_rank: Regular Contributor
timestamp: October 04, 2016, 06:55:49 pm
content: I'll start by posting what I found inside a "magnetic stirrer", which is a lab equipment one would think is safe to use. (hint: pay attention to the ground and the crushed cable (also the case is completely metallic)).

author: Falcon69
author_rank: Super Contributor
timestamp: October 04, 2016, 08:35:22 pm
content: that's an easy way to ground the motor casing.

author: Neuromodulator
author_rank: Regular Contributor
timestamp: October 05, 2016, 01:47:00 am
content: Quote from: Falcon69 on October 04, 2016, 08:35:22 pmIt wouldn't be that bad if that cable was the ground, but its either neutral or hot depending on how you connect the plug to the socket.

author: richnormand
author_rank: Unknown
timestamp: October 05, 2016, 01:58:16 am
content: But how did it get there?One would think the motor is a single unit before assembly?Or was this a DIY motor repair, taken apart and then reassembled with the wire squeezed in there?

author: Neuromodulator
author_rank: Regular Contributor
timestamp: October 05, 2016, 02:25:44 am
content: Quote from: richnormand on October 05, 2016, 01:58:16 amThey dissassembled it to drill a hole and fix an opto-switch to it. The job was so poorly done that you can see they used a big nut inbetween to keep the opto-switch from touching the chopper wheel.

author: Jeroen3
author_rank: Super Contributor
timestamp: October 05, 2016, 02:12:03 pm
content: I though magnetic stirrers were solid state... But they actually rotate a magnet inside, who knew!
Video resolution on cameras - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: October 06, 2016, 01:44:57 am
content: So my phone I bought new for 35nzd free shipping has a 5mp camera and can record in 720p30fps takes very HQ video and photos look great but I have another app on my phone called lg camcorder that let's me rec in 1080p and it records fine but I wanted to know is it just upscaled from 720p seeing that 5mp photos have a higher resolution then 1920x1080 I would think its not but I'm not sure how cameras work when taking video

author: daveshah
author_rank: Unknown
timestamp: October 06, 2016, 06:32:09 am
content: Just because it takes pictures at 5mp doesn't necessarily mean it supports 1080p video as the sensor might not be able to be read out fast enough (also the ISP in the processor might not be able to receive and process pixels fast enough).However a number of common 5mp image sensors do support 1080p30. Easiest option though would be to look up your phone model on gsmarena which will probably list the capabilities of the camera.
Best Hover Bikes Available 2016  - Page 1
Forum section: electronics / general

author: ez24
author_rank: Super Contributor
timestamp: October 04, 2016, 02:12:35 am
content: Interesting video:

author: XOIIO
author_rank: Super Contributor
timestamp: October 05, 2016, 10:04:03 am
content: Got to love clickbait videos that only half live up to their titles.
Where to order 18650 Li-ion cells? (AU) - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: October 04, 2016, 09:09:34 am
content: I have a number of LED torches which use a 18650, 3.7v, 3.4Ah lithium ion battery. The exact model number from the manufacturer is theWolf Eyes LRB168A. It just has standard battery terminals for the positive and negative. Does anyone know where I can order reputable replacements in Australia?Element14 have only one 18650 battery listed which is a NiMH type with tags instead of flat terminals.

author: VK5RC
author_rank: Unknown
timestamp: October 04, 2016, 10:35:42 am
content: I have bought quite a bit of gear from these guys a couple of hand held LED torches and headlamp for 18650, about 6 or so batteries ( for ham stuff ) chargers etcI don't think they are the cheapest but their batteries have been good 18650 Panasonic types with low voltage cut off.https://www.brightnite.com.au/batteries

author: Halcyon
author_rank: Unknown
timestamp: October 04, 2016, 06:43:05 pm
content: Thanks guys.Quote from: VK5RC on October 04, 2016, 10:35:42 amDo you know which one's listed on theBrightNite websiteuse Panasonic cells? It seems the 'Olight' branded ones do but most of them don't list the cell manufacturer in their specs.TheKeeppower P1835Jhas a "quality Li-ion rechargeable cell made in Japan".

author: VK5RC
author_rank: Unknown
timestamp: October 04, 2016, 08:02:29 pm
content: I have bought Eagletec and Olight branded cells from them, mainly because of the good reputation of Panasonic cells. I have had the 3 of the Eagletec ones for about two years and they have gone well, my main requirement is holding a reasonable charge if left unused.I don't know a lot about the various cell brands in lithium - I get the feeling it is a new area - lots of companies coming and going . I bought just a few of what appeared to be the better quality cells given issues re fire risk etc. I am also of the opinion that in a few years the quality will continue to improve, the price fall and perhaps LiFePO4 may take over.I have found the Battery University an interesting read although I have read some strong criticisms about it.

author: amyk
author_rank: Super Contributor
timestamp: October 05, 2016, 02:57:46 am
content: This guy (who posts here too, occasionally) reviews atonof 18650 batteries and related items:http://lygte-info.dk/review/batteries2012/Common18650Summary%20UK.html
OT Humor Fords new car for cash strapped buyers - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: October 04, 2016, 02:12:53 am
content: https://youtu.be/P8UtRNCztVI

author: Red Squirrel
author_rank: Super Contributor
timestamp: October 04, 2016, 05:52:09 am
content: lol that's great!It's also kind of dark humor given how crappy the economy and job market is. lol
Apple Lisa promo video 1983 - Page 1
Forum section: electronics / general

author: SL4P
author_rank: Super Contributor
timestamp: October 10, 2016, 08:51:46 am
content: Life was simple...I had a Lisa (at huge expense), but not for typical office work. I did write a couple of technical manuals for people, but it paid for itself creating content for TV commercials and segments, but after a year or so, i was so tired of dealing with Apple as a solo developer, that i swapped it with a friend for an overclocked PC AT.Never looked back.
The Stupidity Paradox - Page 1
Forum section: electronics / general

author: grouchobyte
author_rank: Regular Contributor
timestamp: October 03, 2016, 06:55:27 pm
content: https://aeon.co/essays/you-don-t-have-to-be-stupid-to-work-here-but-it-helps

author: coppice
author_rank: Super Contributor
timestamp: October 03, 2016, 08:21:00 pm
content: If big companies didn't ensure their people's effectiveness were low, their economies of scale would make being a small player or a startup extremely difficult. Its actually a requirement for the whole spectrum of industrial activity to work.

author: djacobow
author_rank: Super Contributor
timestamp: October 03, 2016, 09:02:54 pm
content: By starting with the example of management consulting, they really tilted the balance in favor of their argument. But I'm not sure who's being stupid. You have to be pretty naive to believe that management consulting companies exist to help companies work out the best solutions to their problems. Management consulting exists to put a veneer of objectivity on whatever management wanted to do in the first place. Management has plenty of ways of signally their desires to the consulting team, which the consulting team then mirrors back to them in powerpoint and "sophisticated" models. When viewed in that frame, the way management consultants behave is quite rational.That said, organizations often, either intentionally or unintentionally, set internal incentives that are at odds with the organization's purported primary goals. This happens for a lot of reasons, but is pretty well known. Google "goal displacement" and you'll uncover a pretty rich literature. I'm not sure I believe that it is more common in large orgs, though I guess that small orgs that get too far away from profit-making as a primary goal disappear rather quickly, so it could be that you mostly get to observe it in large, (formerly) successful enterprises.Corporate governance is pretty fascinating, and the simple fact remains that shareholders, management, and various layers of employees all have different goals. Proper incentives, such as stock, can theoretically align everybody, but in reality, it never seems to work out that way, in part, I suspect because management has access to better information about what is happening in the company and market than either shareholders or regular employees, and they game the system in their own favor.

author: CatalinaWOW
author_rank: Super Contributor
timestamp: October 04, 2016, 05:19:01 am
content: Quote from: djacobow on October 03, 2016, 09:02:54 pmI also suspect that it is because in many cases it is far easier to feather ones one nest than to figure out how to fix the corporate problems. So even with the best of incentives and intentions the personal job is done more effectively.
Electronics Tradeshows - Page 1
Forum section: electronics / general

author: garboui
author_rank: Regular Contributor
timestamp: October 03, 2016, 02:45:55 pm
content: What are the biggest tradeshows for the electronics industry? Electronica in Munich is one but are there other that are on the same scale or larger?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 03, 2016, 02:55:21 pm
content: Electronica is by far the biggest.In the UK, Southern Electronics is the main one

author: daqq
author_rank: Super Contributor
timestamp: October 03, 2016, 03:45:52 pm
content: If you are in Central Europe, Amper is fairly large (http://www.amper.cz/).
BBS Documentary 2005 - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: October 03, 2016, 02:57:06 am
content: Those were fun days....Manual dial up at 300bps with my acoustic Cat modem.USR makes the 300bps smart modem with auto dial. No more putting the hand set into the modem!Procomm and Qmodem. I was a diehard Procomm user early on, the switched.Scripts, lots and lots of scripts.USR HST with it's TMS320. 9600bps. I think it was $1000 back then! They knew their market. The modem was able to make the call and disconnect so fast that the phone company would not charge you if there is no modem on the other side to answer! Long distance phone bills were not much of a problem. Use the Merit network to connect to a modem in the local calling area of the BBS you wanted to connect to. Take control of the modem and manual dial the local number to the BBS. No more long distance.
Extreme geocaching - Page 1
Forum section: electronics / general

author: richnormand
author_rank: Unknown
timestamp: October 03, 2016, 04:33:17 am
content: Dave mentioned geocaching a few times. This one will be hard to beat.https://www.geocaching.com/geocache/GC1BE91_international-space-station

author: Cyberdragon
author_rank: Super Contributor
timestamp: October 03, 2016, 04:55:09 am
content: I was actually thinking of starting a thread on this, but someone did now. There are plenty of extreme geocaches out there, defined by double 5 star, you can look them up on youtube.The only geocaching I've done was like in boyscouts or something a long time ago. We only did the easy ones of course (we didn't have gps, only maps). Don't know if I still have any of the stuff though.EDIT: Only one find on that...I wonder why...

author: XOIIO
author_rank: Super Contributor
timestamp: October 03, 2016, 05:17:35 am
content: Lol, when I saw this title I immediately thought of coming up with something high altitude like a smartass, tuns out I was right.

author: Cyberdragon
author_rank: Super Contributor
timestamp: October 03, 2016, 05:29:09 am
content: One day there will be ones on Mars.

author: raptor1956
author_rank: Frequent Contributor
timestamp: October 03, 2016, 05:56:29 am
content: Quote from: Cyberdragon on October 03, 2016, 05:29:09 amLeft by who?Brian

author: Aeternam
author_rank: Unknown
timestamp: October 03, 2016, 06:34:25 am
content: Elon Musk
power supply wattage calculation?  - Page 1
Forum section: electronics / general

author: Mugiwara303
author_rank: Contributor
timestamp: September 30, 2016, 09:56:04 pm
content: hello guysi have a very old psu and i want to know how mayn watts can deliver, nothing is written on it, it outputs multiple voltage values, thanks in advance

author: Rerouter
author_rank: Super Contributor
timestamp: September 30, 2016, 10:05:12 pm
content: as its a very old one, the very first thing you can look at is the fuse, this will tell you your absolute maximum,next up would be to measure its output voltage and connect a load until the output begins to droop, for this set it to the highest voltage it can output, as for a transformer based one this should reach the regulator drop out voltage earlier. then from your load you work out the wattage you where pulling, (V * I), so now you know your max wattage, and finally set it to a lower voltage and put a larger load across it to try and pull around the same amount of current as the earlier test to see whether it is current limited, thermally limited (if you hear relays clicking as you adjust the voltage it may not be this one), or wattage limited (If SCR mains controlled)

author: Mugiwara303
author_rank: Contributor
timestamp: September 30, 2016, 10:24:00 pm
content: It doesn't have a fuse, it's so basic just a transformer and 4 diodes and a capacitor, what kind of loads should I put that draws lot of current?!

author: ivan747
author_rank: Super Contributor
timestamp: September 30, 2016, 11:08:58 pm
content: Post a picture with a ruler, maybe we can estimate.

author: SteveyG
author_rank: Unknown
timestamp: October 01, 2016, 08:06:03 am
content: You could also load it up, look a the voltage drop and estimate from there.
Safety disclaimer for YouTube? - Page 1
Forum section: electronics / general

author: _Andrew_
author_rank: Regular Contributor
timestamp: September 30, 2016, 05:35:16 pm
content: Does anyone know of a reliable source for suitable wording for a YouTube channel safety disclaimer?Feeling the need to be creative and have for some reason thought it would be a good idea to set up a channel to play about with where I will be filming little projects based around hobbies and creativity. (Oh no not another one I here you cry!)In all lightly hood this will include stuff that may involve some sort of hazard and may not be the correct way of doing things. So in essence a “don’t try this at home”I have tried various searches to try and find guidance on this but either I am being completely inept with my search terms or there is a scarcity of information on this, or I am just over thinking this.

author: metrologist
author_rank: Super Contributor
timestamp: September 30, 2016, 05:53:51 pm
content: Don't try this at home, kids. Do it at your friends!Check out mrpete222. Most of his videos have a safety screen. Put your message in something like that.

author: Halcyon
author_rank: Unknown
timestamp: September 30, 2016, 10:14:43 pm
content: Keep it simple. There is no need to start including complicated legal bullshit. At the end of the day, if someone is stupid enough to copy something dangerous they saw on YouTube, all the more better for the gene pool ;-)
£1000 1 sold really? - Page 1
Forum section: electronics / general

author: StuUK
author_rank: Frequent Contributor
timestamp: September 30, 2016, 08:17:51 pm
content: Look at this on eBayhttp://www.ebay.co.uk/itm/371727928502How can this be worth it?

author: dexters_lab
author_rank: Unknown
timestamp: September 30, 2016, 08:27:55 pm
content: looks like the other one was sold for £100http://www.ebay.co.uk/itm/Time-decade-resistance-model-8000-type-1040-/222195592991?hash=item33bbe3af1f:g:c-oAAOSwSv1XkrUYwhy the 10x increase in price? Sometimes sellers do this when they go on holiday to keep the listing up but prevent anyone buying it until they return

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: September 30, 2016, 08:28:22 pm
content: A previous listing from that seller sold at £100 - maybe a typo somewhere ?They're £631 newhttp://uk.farnell.com/time-electronics/1040/resistance-box/dp/5058284?ost=time+1040&selectedCategoryId=&categoryNameResp=All%2BCategories&searchView=table&iscrfnonsku=false
PR at Altium - Page 1
Forum section: electronics / general

author: ECEdesign
author_rank: Regular Contributor
timestamp: September 30, 2016, 12:07:06 am
content: I guess it must get boring to be a PR person for an EDA company... Really?

author: Bud
author_rank: Super Contributor
timestamp: September 30, 2016, 12:17:48 am
content: WTFDid it pop up while you were working ?

author: ECEdesign
author_rank: Regular Contributor
timestamp: September 30, 2016, 02:57:42 pm
content: No, I made the probably unwise decision to follow Altium on TwitterThey do post some helpful tips on PCB design on there sometimes.
The Encabulators - Oldie but a goodie - Page 1
Forum section: electronics / general

author: CoffinDodger
author_rank: Regular Contributor
timestamp: September 29, 2016, 10:06:09 pm
content: These are quite old but are still rather hysterical.Same script more or less as the original below

author: Brumby
author_rank: Unknown
timestamp: September 30, 2016, 01:23:23 am
content: Yes. We've seen all these before - but we still like them.I even took a few quotes and used them in a post only a few days ago. (Dave got it - I'm not sure who else did.)
Reykjavik goes dark for Northern Lights show - Page 1
Forum section: electronics / general

author: chris_leyson
author_rank: Super Contributor
timestamp: September 29, 2016, 07:56:08 pm
content: Nice one Iceland, a bit of creative thinking not only saves power but educates at the same timeNever seen the Northern lights don't live far North enough but would love to see them. I wonder can you predict the "path" of the solar wind from the patterns of ionised Nitrogen and Oxygen atoms displayed in the sky. And from an RF propagation point of view you have a useful RF reflector in the upper atmosphere, I wonder if anyone has done any research on this, probably not and the way things are going probably nobody will, who listens to radio these days when you can use the internet. But seriously, can they be used as radio reflectors ?Astromony
Self driving... queue chair - Page 1
Forum section: electronics / general

author: zapta
author_rank: Super Contributor
timestamp: September 28, 2016, 04:42:39 pm
content: How comfortable are they? Do they come in different colors?

author: System Error Message
author_rank: Frequent Contributor
timestamp: September 28, 2016, 05:16:23 pm
content: its better than standing and if this prevents people cutting the queue than its a good solution. In the UK if you cut the queue they will send you all the way to the back (i see this happening all the time at customs at airports all around the world and in other places people get away with it). In asia cutting queues are a huge problem so these chairs and self driving cars are the answer.

author: zapta
author_rank: Super Contributor
timestamp: September 29, 2016, 07:38:54 am
content: Quote from: wilfred on September 29, 2016, 12:23:09 amIt's well documented that the numbers based system has its own problems.

author: 1xrtt
author_rank: Regular Contributor
timestamp: September 29, 2016, 11:52:04 am
content: Quote from: zapta on September 29, 2016, 07:38:54 amSpecially if one tries to cheat and cut the line.In Brazil, most public services use a number based queue. Some enforce a scheduled based system.For example, my wife and daughter had to renew their passports. So, in middle July, I fill up the forms and paid the taxes online, and the next available and convenient date to visit the federal police office, was by end of August. At specified date and time we showed up and, after completing the procedures (document checking, photos, fingerprints, etc), we're told that the passports will be available by end of October.However, between stepping in and stepping out of the building, it took about 7 minutes.So, if you disregard the fact that it takes 2 months to *print* the documents and it is not in a hurry to travel, it seems a efficient system.
Large number of discontinued products from Analog Devices - Page 1
Forum section: electronics / general

author: daqq
author_rank: Super Contributor
timestamp: September 28, 2016, 12:31:10 pm
content: While searching for parts for a project I noticed this:http://www.analog.com/media/en/PCN/ADI_PDN_16_0050_Rev_B_Form.pdfA lot of it is just some renaming, but there are quite a few things that have no replacement - such as the HMC628, which is quite an annoyance for meCheck your parts for your new projects.

author: Tomorokoshi
author_rank: Super Contributor
timestamp: September 28, 2016, 02:30:54 pm
content: Good to know! Time to switch over to Linear!

author: David Hess
author_rank: Super Contributor
timestamp: September 28, 2016, 07:10:25 pm
content: Quote from: Tomorokoshi on September 28, 2016, 02:30:54 pmDoh!

author: Cerebus
author_rank: Super Contributor
timestamp: September 28, 2016, 09:38:26 pm
content: Quote from: Tomorokoshi on September 28, 2016, 02:30:54 pmYou'll find that difficult, Analog have just bought Linear.

author: EmmanuelFaure
author_rank: Regular Contributor
timestamp: September 28, 2016, 11:32:53 pm
content: https://en.wikipedia.org/wiki/Irony
Likely cause of Basslink failure is the Geelong Star - Page 1
Forum section: electronics / general

author: HackedFridgeMagnet
author_rank: Super Contributor
timestamp: September 28, 2016, 08:06:35 am
content: Basslink undersea HV cable connects Tasmania and it's Hydro power generation capacity to Australia's national grid.https://en.wikipedia.org/wiki/BasslinkThe cable failed and took months to fix.https://en.wikipedia.org/wiki/2016_Tasmanian_energy_crisisSeems like the most probable cause of the Basslink cable was a fishing trawler.http://tasmaniantimes.com/index.php?/weblog/article/likely-cause-of-basslink-failure-is-the-geelong-star/If anyone sees it differently then point out why.It cost Tasmania a lot of money as all the hydro dams were at record low due to drought. I think they had to rent about 200MW of temporary diesel capacity.I doubt they will be able to claw back any money though.

author: dmills
author_rank: Super Contributor
timestamp: September 28, 2016, 11:38:11 am
content: It is just a cost of doing business with undersea cables.They are getting better about burying the things, but they still get caught in fishing gear on a fairly regular basis.A cable snag actually pose a real hazard to fishing vessels in that the attempt to retrieve the gear with a heavy undersea cable wrapped around it can actually sink the ship.The cables are charted, sort of, but they do actually move around some, and you need a fairly large scale chart to be sure of exactly where things are supposed to be, which is not something many bother with when in open water.For an undersea cable operator this is an insurable risk, and getting anything back from the fishing boat is unlikely.Regards, Dan.

author: StuUK
author_rank: Frequent Contributor
timestamp: September 28, 2016, 12:48:37 pm
content: Sometimes useful though:-
Assemblers with an R&D department. What do you think? - Page 1
Forum section: electronics / general

author: nctnico
author_rank: Super Contributor
timestamp: September 29, 2016, 08:33:36 am
content: I'm wondering about how others think about assemblers who also develop electronics. Personally I'm a bit wary of using such assemblers. After all my customers pay me for developing a circuit and I have to rely on an assembler to keep the information away from prying eyes. I don't see that happening when an assembler is (in a way) also a competitor.

author: Jay_Diddy_B
author_rank: Super Contributor
timestamp: September 29, 2016, 09:19:03 am
content: Hi,By 'assemblers', do you mean 'contract manufacturers or CM'?There has been a trend in the last few years where CMs have been developing design services. These are called 'Original Design Manufacturers, ODM'. The idea is that will add more value.This is a trend away from traditional CM activities, where the CM built the products using the drawings and BOMs supplied by the customer.I have concerns with 'IP leakage', where even with NDAs you have to educate the ODM on how to design for your market, then they could sell their services to your competitor.In these situations I like a very simple NDA:If you f**k with our business, we will f**k with yours.This work while there is a strong business relationship with the ODM or CM. But there is still IP leakage.Regards,Jay_Diddy_B

author: nctnico
author_rank: Super Contributor
timestamp: September 29, 2016, 03:09:27 pm
content: I companies who solder components onto circuit boards. Ofcourse some IP leakage is unavoidable but there is a difference between someone getting a factory tour taking a peek at a board and someone being able to study it for days and maybe even go through the gerbers.
Elenex show 2016 - Page 1
Forum section: electronics / general

author: IconicPCB
author_rank: Super Contributor
timestamp: September 25, 2016, 02:50:18 am
content: Didnt get a chance to travel to Sydney this year to see the exhibition.Anybody attended?What was it like this year?

author: johnboxall
author_rank: Unknown
timestamp: September 28, 2016, 08:51:14 am
content: Electronex? Pretty much dead, the quietest show I've seen since 2011. We lasted an hour, had lunch then flew home early.
Custom PCs and FCC certification - Page 1
Forum section: electronics / general

author: bradl
author_rank: Newbie
timestamp: September 27, 2016, 11:48:42 am
content: HelloAnother post about FCC got me wondering: AFAIK, FCC does not give certifications for motherboards (https://transition.fcc.gov/bureaus/oet/info/documents/bulletins/oet62/oet62rev.pdf):QuoteIf the motherboards themselves are not certified, are assembled PCs (from Dell, HP, etc.) certified? Many local shops sell assembled/custom PCs as well, so are custom PCs meant to be certified?QuoteThe boards aren't certified to begin with, wouldn't it be impossible to start with a certified system?

author: RGB255_0_0
author_rank: Frequent Contributor
timestamp: September 27, 2016, 12:09:58 pm
content: Never really noticed, so I took a look at my old 775 board from Gigabyte:http://www.gigabyte.com/products/product-page.aspx?pid=3485#ovObvious FCC logo there and...And as long as you don't modifymodules, such as Wi-Fi or Bluetooth adaptors, then I don't see how a custom PC would break FCC compliance.

author: bradl
author_rank: Newbie
timestamp: September 28, 2016, 01:03:55 am
content: Quote from: RGB255_0_0 on September 27, 2016, 12:09:58 pmSo this board is a Class B device. Isn't it required to publish the test reports of Class B devices though? I can't seem to find even your board's FCC ID.

author: DimitriP
author_rank: Super Contributor
timestamp: September 28, 2016, 01:20:01 am
content: QuoteThere are all kinds of "-ATION" for equipment (ok...three)More fun facts here :https://www.fcc.gov/general/equipment-authorization-procedures

author: bradl
author_rank: Newbie
timestamp: September 28, 2016, 01:43:54 am
content: Quote from: DimitriP on September 28, 2016, 01:20:01 amThanks for the useful link. It says:QuoteSo, if the FCC finds a particular custom PC troubling, would they ask the custom PC assembler or the board maker for the test reports? I'm guessing the test reports are the board maker's property and they're kept private. But then, wouldn't the "responsible party" be the assembler since they would be the one who selects the part and engages in the sale?
The Empire Reboots - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: September 27, 2016, 06:17:52 pm
content: The thread on "Windows is getting disgusting" reminds me of this Article.The Empire Rebootshttp://www.vanityfair.com/news/business/2014/11/satya-nadella-bill-gates-steve-ballmer-microsoftThis is an interesting read about how Microsoft management's triad (Bill Gates,Steve Ballmer, andSatya Nadella) interact and how their relationship may affect their future.Granted,Vanity Fairis no "(The) Economist" when it comes to business, but thenThe Economistit notThe Economistof yore either.
Where to buy: Flush wall-mount cabinet - Page 1
Forum section: electronics / general

author: Psi
author_rank: Super Contributor
timestamp: September 27, 2016, 11:31:49 am
content: Does anyone know a china website where i can buy a wallmountflushelectronics enclosures for a good price?Something like this...I cant find even a single one anywhere on aliexpress.Only real requirement is that it flush mounts into the wall cavity and is larger than 250 x 250 x 50mm. Doesn't need IP67 or anything.It could have a glass front, or not, doesn't really matter.Currently I'm just trying to figure out the right search terms to actually find them on china sites.I have found a wide range of sizes/colors/types available in local electrical supply shops but they all sell for ~$150 each which is ridicules.
Spacecraft Stabilization and Control 1968 - Page 1
Forum section: electronics / general

author: setq
author_rank: Frequent Contributor
timestamp: September 26, 2016, 01:45:03 pm
content: I can't get enough of this stuff - thanks for posting

author: Tomorokoshi
author_rank: Super Contributor
timestamp: September 27, 2016, 03:35:41 am
content: Nice early model of Skylab!
CNC Porn - Page 1
Forum section: electronics / general

author: pickle9000
author_rank: Super Contributor
timestamp: September 26, 2016, 03:21:30 am
content: I bet that machine cost more than 6 bucks. Seems a shame to make jewelry with it.

author: raptor1956
author_rank: Frequent Contributor
timestamp: September 26, 2016, 04:28:30 am
content: Quote from: pickle9000 on September 26, 2016, 03:21:30 amWell, if the well healed customers are willing to pay $50K or more and they can keep the machine busy then who's to complain. The CNC machine is just a tool, a very expensive too for sure, but, once again, if they can make money making jewelry then more power to them...Is making turbine blades for cruise missiles less of a shame?Brian

author: DTJ
author_rank: Super Contributor
timestamp: September 26, 2016, 07:34:30 am
content: A couple of my favorite CNC porn vids.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: September 26, 2016, 08:52:36 am
content: This still has to be one of the best :

author: CM800
author_rank: Frequent Contributor
timestamp: September 26, 2016, 11:27:08 am
content: Quote from: mikeselectricstuff on September 26, 2016, 08:52:36 amAaah yes. totally agree...I've seen it in person at the Mach exabition in the NEC. Looks great.

author: HP-ILnerd
author_rank: Frequent Contributor
timestamp: September 26, 2016, 11:30:32 am
content: Amazing to watch this stuff.I just got a minimill and minilathe (Yay me!), so I'm having fun doing some machining (manual)--heck I'm even finding grinding toolbits to be fun, but this advanced industrial-level CNC stuff is really cool too.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: September 26, 2016, 02:31:51 pm
content: Drilling in slow motion:

author: edy
author_rank: Super Contributor
timestamp: September 26, 2016, 08:14:56 pm
content: This one is milling an expensive bit of dental hardware.... definitely worth the investment in CAD/CAM, compared to the old way of doing things. The new way: digitally scan mouth or model of the mouth and the opposing teeth, and design and construct everything digitally with CAD/CAM. Old way: wax up teeth on the model, take wax version and add a sprue and "invest" it into a cylinder of stone, burn out the wax and sprue to produce a void in stone that you then pour molten metal into, then break the stone mold and proceed to spend hours cleaning up the metal, polishing it and so on..... Not to mention all the errors introduced along the way due to different expansion/contraction coefficients of the dental impression, stone, metal, etc. Most labs are going this way...
New member Q; looking for "follow me luggage" component schematics and code - Page 1
Forum section: electronics / general

author: Renld
author_rank: Newbie
timestamp: September 24, 2016, 06:13:36 pm
content: I saw a video from 3/19/2012 that showed Ben Heck and Jesse Robinson do a segment on you tube called "how to make your luggage follow you around" Is there a place where I can get a materials list of components and schematics and code to build one of these?

author: RobK_NL
author_rank: Frequent Contributor
timestamp: September 25, 2016, 06:21:08 pm
content: You needsapient pearwoodfor that.

author: batteksystem
author_rank: Regular Contributor
timestamp: September 26, 2016, 01:16:27 pm
content: I remember I saw this one not long ago:
is the brand Apacer any good  - Page 1
Forum section: electronics / general

author: sonicwang
author_rank: Contributor
timestamp: September 26, 2016, 08:50:16 am
content: looking to pick up a 64gb usb 3.0 flash stick for 21 tomorrow on special for use with my portable speaker since last week the 30gb hard drive in my ipod has failed and is no longer working i have since sold the ipod for $25is the brand Apacer any good for the price

author: sonicwang
author_rank: Contributor
timestamp: September 26, 2016, 09:12:17 am
content: Quote from: blueskull on September 26, 2016, 09:04:11 amthank you for your help i think i will go ahead and pick one up as im poor spending just $23 is a lot for me

author: wraper
author_rank: Unknown
timestamp: September 26, 2016, 09:51:02 am
content: You should rather look by model, not by brand. The fact it has USB3.0 does not mean it's a fast or reliable flash drive, it actually may have piss poor performance and take forever to copy the data. Look for actual benchmarks and buyer ratings/feedback, for example on amazon. As of brand, apacer is ok.
Schematics needed, Buyers remorse, rebrannded EEVBLOG meter on CL - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: September 16, 2016, 12:15:33 pm
content: I downloaded the manual for Dave's BM235 (like the personal touch BTW) and was trying to locate a schematic for it. This came up in the search:http://minneapolis.craigslist.org/hnp/tls/5736166370.htmlAnyone know if the schematics are available on-line? I've had no luck finding them.

author: Muttley Snickers
author_rank: Unknown
timestamp: September 16, 2016, 12:29:55 pm
content: If I remember correctly, I don't think that even Dave has the schematic at this point.

author: EEVblog
author_rank: Unknown
timestamp: September 16, 2016, 12:57:06 pm
content: Quote from: Muttley Snickers on September 16, 2016, 12:29:55 pmCorrect.If I want it I'll have to reverse engineer it.

author: Brumby
author_rank: Unknown
timestamp: September 16, 2016, 01:02:41 pm
content: It came with alligator clips?

author: joeqsmith
author_rank: Super Contributor
timestamp: September 16, 2016, 01:49:06 pm
content: Quote from: EEVblog on September 16, 2016, 12:57:06 pmNo problem. Was just curious about the photo on page 27 of the manual and what appears to be two high speed clamps made up from Q4/5 and Q6/7. These are not populated in the photo but it also looks like they may not be connected to anything.

author: FlyingHacker
author_rank: Frequent Contributor
timestamp: September 25, 2016, 08:56:19 pm
content: I miss the days of high end equipment with full schematics and service manuals, like Fluke, Tektronix, HP, etc.Why did this change? Because it became easy and cheap to duplicate things in China, or what? Even the big boys don't give you anything useful anymore.This I why I buy so much old gear. I can actually fix it.

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 25, 2016, 09:04:50 pm
content: Quote from: FlyingHacker on September 25, 2016, 08:56:19 pmBecause they don't want you to fix it! They want to scam you into spending more money on a new one!Quote from: FlyingHacker on September 25, 2016, 08:56:19 pmExactly!

author: Macbeth
author_rank: Super Contributor
timestamp: September 25, 2016, 09:13:41 pm
content: Quote from: FlyingHacker on September 25, 2016, 08:56:19 pmNo. The chinese can strip down and reverse engineer a product within microseconds, like a horde of worker ants set a task - it will be done.It's purely because the western companies are run by MBA's and Accountants vs Engineers. The same cancer is why the likes of China are taking over these industries. In particular note how China actually do release this sacred information, albeit by unorthodox means - but intentional - to their own schools of engineers in mandarin and for free.
Happy Stanislav Petrov Day! - Page 1
Forum section: electronics / general

author: djacobow
author_rank: Super Contributor
timestamp: September 26, 2016, 03:42:38 pm
content: https://en.wikipedia.org/wiki/Stanislav_PetrovThanks him for our continued existence, and if any of you have hobby projects to track incoming ICBM's, be sure to check for corner cases involving sunrise and high clouds.
Posting JPEGs, one small administrative change? - Page 1
Forum section: electronics / general

author: FlyingHacker
author_rank: Frequent Contributor
timestamp: September 04, 2016, 09:02:48 pm
content: Would it be possible to accept images that are ".jpeg" in addition to ".jpg" ??Why, because many tablets and phones do not let you easily rename files, and they name the files .jpeg, rather than the three letter .jpg.This would be extremely helpful, as I frequently have to email images to my PC to post them.Thanks.

author: jonovid
author_rank: Super Contributor
timestamp: September 05, 2016, 06:18:26 am
content: i experiment with the Forum user interface to see what will work and what will not.Forum, powered by Simple Machines® Forum (SMF) software!http://www.simplemachines.org/test of Alt codes (?*?_?*?)(*^ -^*)(-''-)(¬¬)(?)(?)(?)()(?)()(??-)(??)??(??)test of jif animation test 192kbtest of FONT SIZE FFONT SIZEFONT SIZEWARNING! WARNING! Do NOT hack!

author: FlyingHacker
author_rank: Frequent Contributor
timestamp: September 25, 2016, 08:28:23 pm
content: I ran into this again. Sure would be nice to be able to upload JPEG files that happened to be named .jpeg rather than .jpg
The bad design that killed JFK's brother - Page 1
Forum section: electronics / general

author: zapta
author_rank: Super Contributor
timestamp: September 25, 2016, 05:57:57 am
content: Watched this on Nova the other day, the allies attempts to destroy the German super gun. The strory has a technological aspect, a remote controlled drone filled with explosive, remote control with TV feedback, and a badly design circuit that killed the pilot, JFK's older brother. And of course the young engineer that tried to warn about the bad circuit but nobody listen to him. The electronic related stuff starts around 49m mark but the entire episode is fascinating.http://youtu.be/iv2Bzr5Is3M?t=39m26s
The effect of fine mist on a notebook display - Page 1
Forum section: electronics / general

author: Back2Volts
author_rank: Unknown
timestamp: September 25, 2016, 10:48:12 pm
content: So interesting ! I am seating on the shore of Lake Superior, at a B&B in Duluth. Late afternoon. A fine mist moved in. Some small droplets cling to the ThinkPad screen. They act as micro magnifying lenses and depending on the pixel where they land, these bright color spots shows up, mostly intense cyan or reddish. I had never experienced it! Very interesting!

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 26, 2016, 03:22:09 am
content: I've sneezed on my screen and had it do the same thing.

author: amyk
author_rank: Super Contributor
timestamp: September 26, 2016, 03:39:05 am
content: You're looking at the subpixels magnified.

author: Whales
author_rank: Super Contributor
timestamp: September 26, 2016, 03:49:23 am
content: It's a shame you can't make fresnels using a liquid (unless it's very thick) on a sheet of glass. "Spray on fresnel" nozzles
500MHz scope for the Ebay junk collectors - Page 1
Forum section: electronics / general

author: StillTrying
author_rank: Super Contributor
timestamp: September 21, 2016, 12:30:11 am
content: £80http://www.ebay.co.uk/itm/HP-Oscilloscope-54610A-500-MHz-2-Channel-Oscilloscope-/291881256232

author: System Error Message
author_rank: Frequent Contributor
timestamp: September 21, 2016, 02:00:27 am
content: Is it yours? I'd like to buy it from you but i cant use ebay/paypal.If it still works how is it junk?

author: StillTrying
author_rank: Super Contributor
timestamp: September 21, 2016, 02:24:05 am
content: It's nowt to do with me, I'd have no use for that speed and couldn't afford the probes."i cant use ebay/paypal"Why not, it's very easy, banned or something.It's a company that accepts credit cards.

author: Brumby
author_rank: Unknown
timestamp: September 21, 2016, 02:37:11 am
content: It has a display at least. That's something.

author: edavid
author_rank: Super Contributor
timestamp: September 21, 2016, 03:42:49 am
content: 20MSPS

author: setq
author_rank: Frequent Contributor
timestamp: September 21, 2016, 06:00:08 am
content: Interesting however there are a few things that put me off: they have a noisy fan, are really difficult to repair (limited to FRU replacement and head scratching) and are stupidly large.

author: StillTrying
author_rank: Super Contributor
timestamp: September 23, 2016, 11:59:18 am
content: Somebody paid £217 for it, I thought it was only worth the £80 if you already had 2 350Mhz or 500Mhz probes lying about.

author: setq
author_rank: Frequent Contributor
timestamp: September 23, 2016, 12:07:52 pm
content: Someone paid £61 for a dead 1970s curve tracer from Telequipment from the same people yesterday.Paid £2 for mine and it worked!

author: System Error Message
author_rank: Frequent Contributor
timestamp: September 23, 2016, 04:43:21 pm
content: i know, stuff on ebay ends up being overpriced these days, and amazon.
How to Write A Youtube Comment - in 10 Steps - Page 1
Forum section: electronics / general

author: TheBay
author_rank: Unknown
timestamp: September 21, 2016, 01:09:11 pm
content: This absolutely cracked me up, it's so true!It was originally at the end of one of Techmoans video's, he decided to put it up on it's own.Shame the comments are disabled though!

author: strangersound
author_rank: Regular Contributor
timestamp: September 21, 2016, 05:52:28 pm
content: Techmoan does cool videos. I love old audio related stuff, and he has brought to my attention a few things I never even knew existed. But he definitely has a keen wit and does cool stuff with the puppets, this being a prime example.

author: joseph nicholas
author_rank: Frequent Contributor
timestamp: September 21, 2016, 06:54:45 pm
content: Ok we have goofus, now I'll be gallent:1. Complement the poster if you liked the video.2. Write a comment to the audience in general, not the author of the video.3. Don't be afraid of making a fool of yourself. If you guess wrong, no harm done.4. If you know more about the subject, don't be afraid to share.5. If the author responds but seems confused, follow up with another comment.6. If someone else flames you tell them to fuck off.7. Don't flatter anyone who posts its a waste of time to those reading a wall of comments, too sentimental (and boring).8. If you like to see more just say so.9. Read as many of the comments that you can before posting so your not repeating someone else.10. Remember that the poster does not own his youtube space, its a creative commons, rude comments are allowed.nico

author: bitseeker
author_rank: Super Contributor
timestamp: September 22, 2016, 12:29:44 am
content: Quote from: TheBay on September 21, 2016, 01:09:11 pmYeah, a guide isn't even necessary for some people.QuoteI remember seeing it. Nice that he made it standalone, too. He's getting quite good with the Muppet skits.QuoteOh, the irony. I guess he had had enough with people practicing on the original video's comment section.

author: @rt
author_rank: Super Contributor
timestamp: September 23, 2016, 01:20:15 am
content: He's got his own channel now. "YouTube Pedant".

author: bitseeker
author_rank: Super Contributor
timestamp: September 23, 2016, 01:34:34 am
content: Well, whadda ya know. That he does.https://www.youtube.com/channel/UC6NEXZflFAvd1b7cAIe3XOw
Unfortunate branding ? - Page 1
Forum section: electronics / general

author: Back2Volts
author_rank: Unknown
timestamp: September 22, 2016, 12:27:46 am
content: Isn't this an unfortunate branding for Li-ion batteries ?http://www.ebay.com/itm/New-10x-18650-3-7v-5000mAH-Rechargable-Li-ion-Batterry-For-Flashlight-USA-Ship-/201673913591?hash=item2ef4b3b4f7:g:tKQAAOxyuR5TY0wS

author: retiredcaps
author_rank: Super Contributor
timestamp: September 22, 2016, 12:31:08 am
content: Discussed already over the years ...https://www.eevblog.com/forum/chat/18650-fake-li-ion-cells/https://www.eevblog.com/forum/reviews/pure-crap-li-ion-batteries/https://www.eevblog.com/forum/chat/fake-(refurbished)-li-ion-batteries-how-dangerous-are-they/

author: dannyf
author_rank: Super Contributor
timestamp: September 22, 2016, 12:33:51 am
content: I heard that they are a big supplier of batteries to samsung note 7, and potentially boeing 787 as well.

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 22, 2016, 03:05:32 am
content: But do they actually make an ultra fire when you explode them?Voltamort wants to know!

author: Augustus
author_rank: Regular Contributor
timestamp: September 22, 2016, 12:46:38 pm
content: OK, it's fake. The fire was first, then they put up the scaffolding with the ad while fixing the building. Still funny as hell

author: fubar.gr
author_rank: Unknown
timestamp: September 22, 2016, 04:14:22 pm
content: http://www.escam.cn/It's a camera manufacturer.Sounds like e-SCAM
electronic circuit /  ultrasonic cleaner  - Page 1
Forum section: electronics / general

author: reneman65
author_rank: Newbie
timestamp: July 05, 2016, 07:11:48 pm
content: hello everyone ,i have a ultrasonic cleaner from the brand EMAG in germany , the type of unit is the EMMI 40 HCnow the problem is that the electronic circuit is deffect ,,,,the are two FET'S IRFP 460 L on the board that where blown .i replace those FET'S and the unit stil don't work ?so i concentrate on the one 16 DIP IC that i think is also deffect ,,but the identification number is scratched of by the manufactorcan someone help me with this to figure out what kind of IC is needed for this 38 khz cleaner ...i found some number stil readable and looks like 44 number ..it has to be a oscilator IC in the 38khz rangethe output of the ic i found that it drives two transistors one pnp and one npn .can anyone help ?thanks rene van steenis

author: alsetalokin4017
author_rank: Super Contributor
timestamp: July 05, 2016, 07:40:31 pm
content: Without a schematic it is going to be pretty hard to tell just what the chip should be. Could be as simple as a TL494, but without knowing the circuit's pinout arrangement it is not possible to tell.Also, you should probably put this post in the "Repair" thread rather than General Chat.

author: 1001
author_rank: Contributor
timestamp: September 22, 2016, 01:39:49 pm
content: it should be a CD4046B, phase-locked loop device, can you post a pic of whole pcb?

author: DmitryL
author_rank: Regular Contributor
timestamp: September 22, 2016, 02:30:46 pm
content: Quote from: reneman65 on July 05, 2016, 07:11:48 pmIs is a "consumer grade" cleaner ? If yes, there should be a plenty of schematics in the internet. In brief: It is a simple self-oscillaing circuit, you power it on, it just generates. In my cleaner there is just one IC, CD4xxx (don't remember) and its function is to generate time delay to keep thing turned ON, 3 minutes or whatever.