hybridfree/eevblog-posts huggingface dataset:
Indonesian forum members, please help with pancamega.com - Page 1
Forum section: electronics / general

author: DC1MC
author_rank: Super Contributor
timestamp: November 09, 2018, 07:57:28 pm
content: Dear forum members form Indonesia, please help me with any information about this used TE seller from Indonesia:http://pancamega.com/I want to buy a relatively hard to find piece and it doesn't inspire me a lot of confidence, but who knows.Any help is appreciated.Thanks,DC1MC
What connects to SR+ and SR- terminals of Philips Xitanium SR LED driver - Page 1
Forum section: electronics / general

author: ocset
author_rank: Super Contributor
timestamp: November 10, 2018, 11:26:13 am
content: Hello,In the Philips 75W Xitanium SR LED driver, what should be connected in to the SR+ and SR- terminals of the connector? (page 1 of datasheet)Is it an external device which needs powering from the SR+ and SR- terminals , or is it an external device which provides a powered DALI bus into the SR+ and SR- terminals?Philips SR LED driver:https://www.na.mytechnologyportal.lighting.philips.com/dam/file:e722c5b7-2994-4007-95bf-fe967b4449e5/Philips+Advance+Xitanium+SR+75W+0.7A+outdoor+LED+driver+with+expanded+memory+datasheet.pdf**********************************************************************************************************************************************************Also, for the following Philips Xitanium LED driver, page 3 of its datasheet shows DALI terminals on its connector. Are these terminals for connecting a powered DALI bus into the product?…….or are these terminals for connecting an unpowered DALI device to the product? (which then receives the powered DALI bus from the product)Philips Xitanium LED driverhttp://www.docs.lighting.philips.com/en_gb/oem/download/xitanium/Xitanium_75W_0.12-0.4A_215V_TD_230V_929000852103.pdf***********************************************************************************************************************************************************We need to know this because some of our customers want to connect a DALI_device_needing_power_from_the_LED_driver , and some customers want to connect a DALI_device_that_provides_power_for_the_DALI_bus.We would like to find a LED driver which allows both these types of DALI device connections. It is extremely difficult to find one like this. Do you know of one?
2.4ghz wireless, device differentiation - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: November 08, 2018, 04:16:30 pm
content: I have two identical 2.4ghz non-bluetooth wireless keyboard+mouse, each came with a USB plug. While both look identical, the USB plug that came with the device only works with that specific device. Out of curiosity, how do the two seemingly identical devices differentiate themselves?Does the 400Mhz wireless devices work the same way or use a different scheme?Thanks!

author: ataradov
author_rank: Super Contributor
timestamp: November 08, 2018, 04:26:48 pm
content: Typically they just use a plain text serial number. More recent device may involve some basic encryption/obfuscation.

author: technix
author_rank: Super Contributor
timestamp: November 08, 2018, 09:40:08 pm
content: The 2.4GHz/433MHz number indicated a fairly wide frequency band, which is often subdivided into narrower frequency bands or channels within. Those devices can operate on different channels within that same general band.Secondly, wireless keyboards and mice often come with some kind of identifier or addressing scheme in their protocol. The receiver will ignore sources from a wrong address. Some better models even have some basic encryption which a wrong receiver won’t be able to decrypt properly.
Plane plummets 500ft in 18 seconds after error - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: November 08, 2018, 12:49:23 pm
content: Don't set your autopilots altitude to 0.https://www.bbc.com/news/uk-46137445What's amazing to me is hoe the software / interface would even allow this.

author: IanMacdonald
author_rank: Frequent Contributor
timestamp: November 08, 2018, 04:05:16 pm
content: Fullsize airliners have terrain avoidance software which would flag an attempt to go so low as to risk a collision with ground features. Not sure if a Dash 8 would though. Probably not.

author: wraper
author_rank: Unknown
timestamp: November 08, 2018, 04:12:24 pm
content: Quote from: IanMacdonald on November 08, 2018, 04:05:16 pmWhy not, Dash 8 Q400 is a modern plane with modern avionics.Quote

author: langwadt
author_rank: Super Contributor
timestamp: November 08, 2018, 04:19:40 pm
content: Quote from: Homer J Simpson on November 08, 2018, 12:49:23 pmhttps://en.wikipedia.org/wiki/Qantas_Flight_72#Analysissome how the data stream to the flight computer got misaligned so that it interpreted what should havebeen height as angle off attack and went into a steep dive injuring many passengersthey have never found the cause of the data glitch ...

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 08, 2018, 06:33:51 pm
content: Humans make mistakes. Shit happens.The guy reacted so that's pretty much what matters.Well, I'm not 100% sure the autopilot should prevent this. I'm not even 100% sure you can't set it to altitude 0 on a big airliner. Some airliners allow practically automatic landing so obviously the autopilots allow descending almost down to ground. They are normally guided by exterrnal cues such as ILS though.What strikes me even more than a potential user interface laxism here is why a pilot would engage autopilot at such a low altitude just after taking off."The report said that autopilot was engaged when the Bombardier Dash-8 Q400 turboprop plane reached an altitude of 1,350 ft."Autopilot at 1350 ft? Sounds like the guy was pretty tired.

author: tggzzz
author_rank: Super Contributor
timestamp: November 08, 2018, 06:45:38 pm
content: Quote from: Homer J Simpson on November 08, 2018, 12:49:23 pmFirstly there are several different aviation "altitudes": QNH, QFE and flight level. Some vary, some can benegative. That's a scope for confusion.Secondly, and amusingly in one way but not in another: "500ft altitude loss - what's the problem?". Glider pilotsroutinelyenter spins (i.e. "depart from controlled flight") at anything above 1000ft AGL, and then descend at about 100ft/s. To recover, you have to dive harder towards the ground. Spin entry and recovery is a normal part of pre-solo training and annual refresher checks.Example, but it looks like a couple of thousand feet AGL.
Address Request - Page 1
Forum section: electronics / general

author: ssashton
author_rank: Frequent Contributor
timestamp: November 06, 2018, 12:22:54 pm
content: Hi Dave,I really want to send you a mailbag but it will be courier from the UK so probably can't go to the PO Box. Please can I get an address for sending?Mods, please delete this if it's out of place. I did email Dave at the email on the contact page but had no response, he's a busy chap!Simon

author: Halcyon
author_rank: Unknown
timestamp: November 06, 2018, 10:12:50 pm
content: Hi Simon,Dave doesn't publicise the address of his office or lab. Because it's a business park, it's unlikely that anything other than letters would be delivered to the physical address, unless it was via door-to-door courier (which is expensive from overseas). This also ensures that Dave's private and business mail is kept separate from the mailbag. I'm sure he also wouldn't appreciate random visitors turning up at his door.There should be no issues sending parcels to the mailbag PO Box from overseas using your regular postal system, it will likely be much cheaper than arranging for a courier. I've had items arrive from the UK to my own PO Box without any issues.All mailbag items should be addressed to:PO Box 7949Baulkham Hills NSW 2153AUSTRALIAOccasionally Dave does accept drop-ins or couriers with prior arrangement, depending on what the item is. For those, send the request through to: eevblog+delivery@gmail.com

author: ssashton
author_rank: Frequent Contributor
timestamp: November 07, 2018, 12:53:24 am
content: Thank you Halcyon.I got a reply from Dave at the email above so we're good to go. He must have missed the first one I sent or I just didn't bug him enough, lolPlease can I request a moderator delete this thread since it has served it's purpose?For what it's worth I've sent small parcels by Royal Mail to Australia before, and it's not uncommon for them to go off-grid for weeks. Courier is far more reliable.

author: Halcyon
author_rank: Unknown
timestamp: November 07, 2018, 09:31:31 am
content: I'm glad it worked out and am looking forward to seeing what you've submitted!
Any Makers in Marin County - Page 1
Forum section: electronics / general

author: Crazy_Pete
author_rank: Regular Contributor
timestamp: November 06, 2018, 08:11:20 am
content: I have accrued a large amount of scientific lab equipment that i need to dispose of. I have an unopened 18MP microscope camera. A complete organic chemistry Lab, a Wideformat (full tabloid size - Unused) Ink Jet Printer / Scanner. I have a new Siglent (unopened) 1104X Oscope. I have too many small raspberry PI, arduinos, esps etc and other electronics components to mention. I WILL NOT SPLIT it, you have to come and get it all at once ;-)Basically my health has gotten to the point where i can no longer sustain my "hobbies" and i am hoping someone will come take all this off my hands. I actually tried a few schools but this is Marin County and they are so wealthy that they don't want it. My health problems don't allow me to drive so this stuff is probably going to go to the dump.thanksCrazy Pete

author: RandallMcRee
author_rank: Frequent Contributor
timestamp: November 07, 2018, 04:01:10 pm
content: Hey,Don't throw it in the dump!I'm in the Sacramento area but will come get this stuff if I can keep it out of the hands of the San Quentin landfill. Yeah, I grew up where you are so I come down, now and then, to visit.I would try to donate it to area schools. Come to think of it, the robotic team here has an industrial sponsor, so they may not want it, here, either! But its certainly worth a shot.Hopefully, you will find someone a bit closer...If you do not, send me a PM, and we can arrange a meet.Thanks,Randy
Quality alternative head torch to BORUIT RECHARGEABLE CREE 13000 ? - Page 1
Forum section: electronics / general

author: zillah
author_rank: Contributor
timestamp: November 06, 2018, 10:24:59 am
content: Dear ExpertsI have been using BORUIT RECHARGEABLE CREE 13000LM for about one and half years which is not a quality head torch bought it from ebayhttps://www.ebay.com.au/itm/BORUIT-UPGRADED-RECHARGEABLE-CREE-13000LM-3T6-3X-XM-L2-LED-HEADLAMP-TORCH-USB/302095643393?epid=886556492&hash=item46564db301:g:gKAAAOSwwKxbtNGe:rk:1:pf:0The BORUIT has super bright light ,,,,,,Which alternative quality head torch with super bright light using 18650 batteries would you recommend ??Preferable (but nor must) ebay sellers as I am not based in USAThanks

author: Ducttape
author_rank: Regular Contributor
timestamp: November 06, 2018, 06:04:39 pm
content: If you can find a headlamp that has an actual USB connector on it, get that one.Why headlamp manufacturers insist on using barrel connectors instead of a standard micro or mini USB connector is beyond me. It's like some twisted joke they've decided to play on their customers, who won't notice this abomination until they've had a chance to fondle their new toy for a while. And then it will be too late; you now have a completely unique charger, cable and car adapter that you can never lose or misplace. Rant complete.Oh yes, as you can probably tell I bought a headlamp recently.
Phoenix contact website - Page 1
Forum section: electronics / general

author: tszaboo
author_rank: Super Contributor
timestamp: November 02, 2018, 10:05:50 am
content: I casually go tohttp://www.phoenixcontact.com/"Access DeniedYou don't have permission to access "http://www.phoenixcontact.com/online/portal/pc?" on this server.Reference #18.6c4f655f.1541152797.44a2bb"You know, I just thought that I can also use a TE connector.When do a company realize that a shitty website means loss of sales? I encounter this on a daily basis.I click on a "download datasheet" button and it leads back to the original site. Or it requires me to register to download a step file. Sure. I just buy this stuff from someone else then.The companies I work for do the same. Website developers are typically incompetent code monkeys, who dream about changing the designs of database every half a year, instead of fixing their broken Java code.Really, the internet worked so much better with static webpages.

author: AndyC_772
author_rank: Super Contributor
timestamp: November 02, 2018, 10:32:52 am
content: I had exactly the same thing happen to me on their site yesterday. I bought a Molex wire stripper instead.

author: Gromitt
author_rank: Regular Contributor
timestamp: November 02, 2018, 11:54:12 am
content: No trouble with that site here.

author: HwAoRrDk
author_rank: Super Contributor
timestamp: November 02, 2018, 09:03:31 pm
content: This is the same problem that is plaguing the Farnell website. Apparently, the errors are from Akamai's CDN. Seems Phoenix use them for their website too.

author: Jeroen3
author_rank: Super Contributor
timestamp: November 02, 2018, 09:07:49 pm
content: Phoenix has nice PDF catalogs though.https://www.phoenixcontact.com/online/portal/ca?1dmy&urile=wcm:path:/caen/web/main/products/catalog_pages/product_catalogs/173a35a7-ee13-4931-9d6c-940bd7837833Much easier to search then their website.

author: veryevil
author_rank: Unknown
timestamp: November 04, 2018, 05:07:51 pm
content: I've had the same issue. Had to use internet explorer to get runs it. Can also delete all phoenix cookies in Chrome and it works for a bit but year. Shit site. Good pdf catalog and I do like the rep we have a lot. So still use some of there bits. Also when it does work full 3d models are great.

author: tszaboo
author_rank: Super Contributor
timestamp: November 06, 2018, 08:49:30 am
content: Quote from: Jeroen3 on November 02, 2018, 09:07:49 pmYeah, I have parts of those. Unfortunately, they lack important information like IP rating of connectors in these catalogues.

author: Ice-Tea
author_rank: Super Contributor
timestamp: November 06, 2018, 08:55:23 am
content: Same issue as Farnell?https://www.eevblog.com/forum/chat/farnell-cpc-utter-incompetence/?topicseen

author: tszaboo
author_rank: Super Contributor
timestamp: November 06, 2018, 12:56:00 pm
content: Quote from: Ice-Tea on November 06, 2018, 08:55:23 amPretty much. I think it is fixed now.
digital cameras the hottest new technology 1995 - Page 1
Forum section: electronics / general

author: Red Squirrel
author_rank: Super Contributor
timestamp: November 04, 2018, 09:58:32 pm
content: I love watching these old videos of tech. A reminder of how fast things have advanced, that we take for granted today.Anyone remember floppy disk cameras? They were pretty neat for their time haha. Used one in high school for various projects. At the time one could only dream of owning something like that.

author: Brumby
author_rank: Unknown
timestamp: November 05, 2018, 12:07:26 pm
content: I remember going to a show in Sydney many years ago - and there was one booth that had only a single item on display...It was a digital camera that had .... wait for it .... a fullone megapixelresolution!!!

author: In Vacuo Veritas
author_rank: Frequent Contributor
timestamp: November 05, 2018, 03:38:23 pm
content: Quote from: Red Squirrel on November 04, 2018, 09:58:32 pmWhy remember? You canliveit!https://www.ebay.ca/itm/Collector-Nikon-Fujix-DS-505-Digital-Pro-Camera-1-3-meg-COMPLETE-Package/264022165618?hash=item3d78f28872:g:HnUAAOSwcT5btppW:rk:1:pf:0

author: bsudbrink
author_rank: Frequent Contributor
timestamp: November 05, 2018, 07:31:17 pm
content: Funny, they were 20 year old technology in 1995:http://wsudbrink.dyndns.org:8080/cyclops/index.htmlMy web site. Sorry, couldn't resist.

author: briandorey
author_rank: Regular Contributor
timestamp: November 05, 2018, 07:45:04 pm
content: My first digital camera was an Olympus model in 1999 with a huge 0.3 Megapixel resolution and the files had to be copied off using a serial lead to a 3.5mm jack.

author: raptor1956
author_rank: Frequent Contributor
timestamp: November 05, 2018, 11:54:55 pm
content: I got my first digital camera, the Kodak DC210, around about 1997 and it had 1024x768 resolution of 3/4MP -- it wasn't too hot. My next one, the Kodak DC290, had 2MP and it was actually very good with excellent skin tones and a resolution that was greater than or equal to most PC monitors of the time. My first really good digital was the Nikon D100 6MP camera and from then I've spent more on cameras and lenses than I care to think about -- my current camera is the Nikon D800E which I've had since 2012.I've scanned in most of my slides and even with the best tools and techniques it's apparent that DSLR's of 8MP or more are just superior to film with the possible exception of the finest grain B&W films the CIA and USAF might have used in the SR-71 etc. Even there, however, the practical resolution for film max's out a bit over 20MP in 35mm format/size.Even more of a difference when you look at astrophotographs taken with a modern DSLR or CCD camera versus hyperized film.Brian
Youtube now only has 360p or 720p on every video, nothing else? - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: November 07, 2018, 12:30:57 am
content: Today, Youtube now only has 360p or 720p on every video, nothing else.....Anyone else getting this?I've been using firefox 52.8 and above esr for the last 2 years without issue.

author: ataradov
author_rank: Super Contributor
timestamp: November 07, 2018, 12:46:42 am
content: I get the same full list of options on a few videos I just tested.

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 07, 2018, 12:47:22 am
content: Nope, not here. Getting 1080p as an option for a lot of videos and even up to 4K for some.I'm on Firefox 63.0.1 if that ever makes a difference.Have no clue if this could depend on the country or other factors.

author: BrianHG
author_rank: Super Contributor
timestamp: November 07, 2018, 12:57:05 am
content: Funny, if I log out, I also get the full video modes. Logging in shoves me back to the 2 video modes.I think Youtube hates me personally...

author: cdev
author_rank: Super Contributor
timestamp: November 07, 2018, 01:01:39 am
content: Check if changing your browser "user-agent" string to report itself as another browser fixes it.

author: BrianHG
author_rank: Super Contributor
timestamp: November 07, 2018, 01:12:39 am
content: I deleted my Gmail account and started from scratch.Youtube runs everything 4x faster now??? Why?Searches pop up instantly now... Why?

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 07, 2018, 01:18:34 am
content: Quote from: BrianHG on November 07, 2018, 01:12:39 amProbably because Youtube runs an obtrusive algorithm that tracks your every search and watch, not just in Youtube but probably associated with your Google searches as well, and then uses that to make all kinds of suggestions (not useful most of the time) and a lot of internal learning and statistics. And it's bound to get heavier as they get more data associated with your account.
ESD Workbench Mat - Page 1
Forum section: electronics / general

author: SeoulBigChris
author_rank: Regular Contributor
timestamp: November 04, 2018, 10:11:59 pm
content: I’m about to order a new mat for my workbench after relocating. It’s the first time for me to buy one, in the past colleagues here in Korea just found them for me from used or surplus stock. The supplier I’ve chosen offers two thicknesses, I believe 2mm and 3mm. I’m inclined to go with the thicker one, but wondered if anyone could comment from experience.

author: SeoulBigChris
author_rank: Regular Contributor
timestamp: November 05, 2018, 12:17:55 am
content: In figured out some more details. The different thicknesses are referred to as Types T2 and T3. It confused me at first because they are also approximately 2mm and 3mm thick, respectively. Type T2 has the usual conductive bottom and dissapatative top layers, and Type T3 has a third internal foam layer.Can anyone recommend one over the other? The price difference isn’t significant, so I’m inclined to get the T3 unless there’s a reason not to.
Tek tbs 1104 pass or buy? - Page 1
Forum section: electronics / general

author: RockMan Rock
author_rank: Newbie
timestamp: November 12, 2018, 07:27:35 am
content: Hey, everyone, I was on Facebook someone is selling a tek tbs1104 for $200 bucks is that a good price is there anything I should look out for the person told me that it came with 4 probes. Thanks for the replies.

author: BNElecEng
author_rank: Regular Contributor
timestamp: November 12, 2018, 08:11:11 am
content: I used one for years and years. Never let me down.I'd say $200 is an absolute steal providing that it works properly.

author: bd139
author_rank: Super Contributor
timestamp: November 12, 2018, 08:17:42 am
content: I’d buy that in a heartbeat. Old TDS220 goes for that here.Ask to see self test pass.

author: tom66
author_rank: Super Contributor
timestamp: November 12, 2018, 09:29:21 am
content: Price is good, but the TBS1104 is basically the same as the old TDS220 series with a colour LCD. Low waveform point count (<3K iirc), no intensity grading, no serial decode functions, limited trigger options.I would personally get a used DS1052E over a TBS1104, or if you could afford it a DS1054Z.

author: bd139
author_rank: Super Contributor
timestamp: November 12, 2018, 09:51:40 am
content: Indeed. To note I'd only buy it at that price because I can probably sell it for more(my daily driver is a TDS210 for ref and that's all I need)
vinyl record style music on the road - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: November 02, 2018, 05:12:48 am
content: Most of us here know vinyl records store its music as bumps on the grooves. I stumbled into a news article and I was very surprise to know that thesame technique can be used on road surface, with your tire being the "pin" to play it.I didn't know you can do that, but it certainly make sense. It would be fun to drive on such a road.Quoting the article from Stars and Strips:"... ... unanimously approved by the cities of Palmdale and Lancaster, Los Angeles County and the California Department of Transportation... Plans call for street and highway signs reading “R. Lee ErmeyAvenue (Avenue N),” plaques and even a“musical road”that willplay the Marines’ Hymn via grooves in the road when driven upon. There aremany such roads across the globe, including one in New Mexico that plays “America the Beautiful.” ... ..."https://www.stripes.com/news/road-that-plays-marines-hymn-to-be-named-after-veteran-and-actor-r-lee-ermey-1.554547Oh, if the name R. Lee Ermey doesn't ring a bell, you may remember him as Marine Gunnery Sergeant Hartman - the drill sergeant in the movie "Full Metal Jacket". R. Lee Ermey died not so long ago. He was a U.S. Marine Gunnery Sergeant in real life.I love his movies. Apparently many others do as well.

author: ataradov
author_rank: Super Contributor
timestamp: November 02, 2018, 05:41:23 am
content: There are a few roads like this in the US where rumble strips along the road are more melodic. But this is a bad idea, since it encourages drivers to drive closely to the edge of the road to hear the music.

author: tpowell1830
author_rank: Frequent Contributor
timestamp: November 02, 2018, 06:05:49 am
content: Yes, here is the Honda road in Cali.

author: Brumby
author_rank: Unknown
timestamp: November 02, 2018, 08:42:41 am
content: That stretch of road is infamous for the "off tune" rendition of the William Tell Overture.From what I have found, it appears the construction crew used the dimensions specified for the distance from the trailing edge of one "nub" to the leading edge of the next. They should have used them for the distance from one leading edge to the next leading edge.The end result is painfully clear as the higher notes are "played".You would think proper communication of this one little bit of (somewhat critical) information would have been high on the priority list.There are a few other similar roads around the world that didn't stuff this up ... but you have to be careful where you put them. If anyone lives within earshot of one of these roads, the novelty will wear off REALLY quickly.

author: BrianHG
author_rank: Super Contributor
timestamp: November 04, 2018, 12:03:10 pm
content: This is the only vinyl record style I approve on the road:
Quality alternative to head torch BORUIT RECHARGEABLE CREE 13000LM ? - Page 1
Forum section: electronics / general

author: zillah
author_rank: Contributor
timestamp: November 03, 2018, 07:30:50 am
content: Dear ExpertsI have BORUIT RECHARGEABLE CREE 13000LM which is a non quality head torch bought it from ebayhttps://www.ebay.com.au/itm/BORUIT-UPGRADED-RECHARGEABLE-CREE-13000LM-3T6-3X-XM-L2-LED-HEADLAMP-TORCH-USB/302095643393?epid=886556492&hash=item46564db301:g:gKAAAOSwwKxbtNGe:rk:1:pf:0The BORUIT has super bright light ,,,,,,Which alternative quality head torch with super bright light would you recommend ?Thanks
List of EE-related conferences? - Page 1
Forum section: electronics / general

author: TimNJ
author_rank: Super Contributor
timestamp: November 02, 2018, 02:33:15 am
content: Hey all,I listen to a bunch of EE related podcasts and almost every week I hear about some interesting conference that I've never heard of before. Does anyone know of a list (or want to contribute to a new list) of conferences? Anything from Defcon to Makerfaire to IMTS, etc.I feel like I always miss them. Would be nice if there was some sort of Ticketmaster service that sends you reminders when there is conferences in your area. I suppose this is largely region specific. If interested, we can make different lists for different parts of the world. Maybe this lists already exists?Thanks,Tim

author: TimNJ
author_rank: Super Contributor
timestamp: November 02, 2018, 03:18:03 am
content: Thanks! Now time to look all these up. And maybe time to actually join the IEEE.
It's a small world online - Page 1
Forum section: electronics / general

author: engineer_in_shorts
author_rank: Regular Contributor
timestamp: November 01, 2018, 04:45:43 pm
content: So I have been searching for something about PAT labels and I came across this link:https://www.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=24780I see this is discussed by one of our regulars, so I thought I might drop in and say hi!

author: Richard Crowley
author_rank: Super Contributor
timestamp: November 01, 2018, 05:08:28 pm
content: My first thought was that "engineer_in_shorts" is a sock-puppet for treezGood to know that he is out there annoying other forums and not just EEVblog.You referred to a discussion that is 10 years old!
Space Shuttle Atlantis STS-27 Seconds From Disaster - Page 1
Forum section: electronics / general

author: wasyoungonce
author_rank: Frequent Contributor
timestamp: October 31, 2018, 08:14:09 am
content: Great story...you have to wonder...there was pretty no contingency for missions.

author: raptor1956
author_rank: Frequent Contributor
timestamp: October 31, 2018, 05:38:14 pm
content: The whole Space Shuttle program was the black hole that devoured NASA -- too much money was spent on it for too little return and the design of the external tank was always a weak spot with the insulation. I always wondered why the insulation couldn't have been applied INSIDE the tank leaving the outside free of anything but ice and the ice could be dealt with by spraying water before launch. Foam on the inside could have helped stabilize and dampen any movement of the fuel/oxygen tanks.There are two downsides to foam on the inside: possible entrapment of fuel vapors, and greater difficulty accessing things. But, foam on the inside would have eliminated the second shuttle crash.The SRB's were another issue, of course, but the real problem was NASA being pressured to launch a teacher in space when conditions were out of spec.All of this brings us to the point where SpaceX and other free market approaches are pushing past NASA. Sad!Brian

author: rdl
author_rank: Super Contributor
timestamp: October 31, 2018, 09:35:39 pm
content: NASA is a bunch of scientists and engineers that if left to themselves can do some really great stuff. The Voyager probes and the many Mars landers are just a few examples. Big projects like the shuttle system and SLS tend to get enough public attention that Congress can't resist sticking their generally clueless noses in. It's usually all downhill from there.

author: David Hess
author_rank: Super Contributor
timestamp: October 31, 2018, 11:10:47 pm
content: Quote from: raptor1956 on October 31, 2018, 05:38:14 pmIgnoring NASA redefining real problems as "maintenance issues", (1) the greatest problem with the Challenger launch waspolitical.Does anybody except me remember whenthiswas published in the magazine Aerospace and Defense Science?(1) Go read the appendix of Feynman's report. NASA will not allow private companies to launch which do what NASA does itself.
Destroying apple devices with helium  - Page 1
Forum section: electronics / general

author: Urs42
author_rank: Unknown
timestamp: October 31, 2018, 05:49:40 am
content: I've found an interesting post on reddit:https://www.reddit.com/r/sysadmin/comments/9si6r9/postmortem_mri_disables_every_ios_device_in/https://www.reddit.com/r/sysadmin/comments/9mk2o7/mri_disabled_every_ios_device_in_facility/You can search for helium in the official iphone manual:https://help.apple.com/iphone/12/#/iph301fc905It seems that MEMS oscillators do not like helium...

author: Halcyon
author_rank: Unknown
timestamp: October 31, 2018, 06:12:55 am
content: There is an existing thread about this issue:https://www.eevblog.com/forum/chat/helium-in-the-air-kills-ios-devices/
Need help in translating Chinese characters at transformer label ... - Page 1
Forum section: electronics / general

author: BravoV
author_rank: Super Contributor
timestamp: October 30, 2018, 01:02:02 am
content: Need help in translating the Chinese label at the transformer on decoding the wires color, also the text on the left side too, and I assume the number R40W means 40 Watts ?Attached photos below.Primary wires are1. Yellow2. Red3. Yellow with green stripe4. Blue5. WhiteSecondary :1. 2 x White2. 1 x Green3. 2 x Blue4. 2 x YellowThe 1 Green + 2 Blue wires I assume its the 18V/0.3A dual windings with center tap, CMIIW.My mains is 220 VAC, and the primary side has 2 X 110V windings, so both need to be connected in series, but what is the correct connection ?Thanks in advance.

author: coppice
author_rank: Super Contributor
timestamp: October 30, 2018, 01:10:29 am
content: The left column on the label, top to bottom, says:RedYellowBlueWhiteThe right column on the label, top to bottom, says:BlueGreenBlueYellowYellowWhiteWhiteR40W is a type number, not a power rating.

author: BravoV
author_rank: Super Contributor
timestamp: October 30, 2018, 01:13:47 am
content: Thanks, so the Yellow with Green stripe wire at primary side is the ground/chassis wire ? (As pointed by the red arrow I added to the 1st photo)

author: coppice
author_rank: Super Contributor
timestamp: October 30, 2018, 01:16:30 am
content: Quote from: BravoV on October 30, 2018, 01:13:47 amThe character pointed at by the red arrow can mean patterned, so I assume it refers to the striped wire.

author: Nusa
author_rank: Super Contributor
timestamp: October 30, 2018, 01:26:45 am
content: Multimeter should be able to quickly confirm if that wire is attached to the chassis mount.

author: amyk
author_rank: Super Contributor
timestamp: October 30, 2018, 01:31:04 am
content: FYI:http://www.bbc.co.uk/schools/primarylanguages/mandarin/families/colours/

author: BravoV
author_rank: Super Contributor
timestamp: October 31, 2018, 03:11:52 am
content: Thanks for all helps and aids on this, as I'm on travel, I will report once I sit down with it, and 1st thing to do is to measure the chasis line.Again, thank you all.
Repair a motherboard hd recorder  - Page 1
Forum section: electronics / general

author: azzzaoo6
author_rank: Newbie
timestamp: October 29, 2018, 11:03:39 pm
content: Hi im new to here i looking for troubleshooting techniques for repairing sagem hd recorder which is totally dead any tips would be helpful

author: Mr. Scram
author_rank: Super Contributor
timestamp: October 29, 2018, 11:08:19 pm
content: Quote from: azzzaoo6 on October 29, 2018, 11:03:39 pmCheck voltages first, and by extension the power supply. A lot of faults boil down to the power supply, especially those of totally dead devices.

author: MrMobodies
author_rank: Super Contributor
timestamp: October 30, 2018, 11:10:16 am
content: If no visible damage try gradually heating the power supply up with a hair dryer for a couple of minutes not too close or such and if it turns on it will be the caps.
Wikipedia "Mexican Standoff" steampunk image....... - Page 1
Forum section: electronics / general

author: Smokey
author_rank: Super Contributor
timestamp: October 29, 2018, 11:24:51 pm
content: https://en.wikipedia.org/wiki/Mexican_standoffFrom the thumbnail, this image of the three guys with guns looks sorta normal.When you zoom in it's super steampunk silly. I hope these three guys are getting a kick out of this. That picture has been up there a while.
Astronauts Escape Failing Rocket - Soyuz Did Not Go To Space Today - Page 1
Forum section: electronics / general

author: Mr. Scram
author_rank: Super Contributor
timestamp: October 12, 2018, 12:53:36 am
content: Any day you walk away from a failed launch is a good day. I also quite impressed with how cool and collected the astronauts were throughout this. The commentators initially didn't even realise there was a problem, as the astronauts reported the problem completely calmly.On days like these you see what separates astronauts from regular mortals.

author: CatalinaWOW
author_rank: Super Contributor
timestamp: October 12, 2018, 01:13:14 am
content: I don't buy any conspiracy theories, but it is getting plausible that morale and motivation are lagging in an end of life program.

author: Homer J Simpson
author_rank: Super Contributor
timestamp: October 12, 2018, 01:16:43 am
content: Quote from: CatalinaWOW on October 12, 2018, 01:13:14 am

author: CatalinaWOW
author_rank: Super Contributor
timestamp: October 12, 2018, 01:27:37 am
content: Most recent info I have heard on the hole is that it was made on the ground, and was repaired, but not correctly. The repair then failed. That is the kind of thing that can happen in a production line which is into it's second or third generation of workers and under cost pressure and with the end of the job in sight. I am merely projecting that similar type defects could be cause of today's (yesterdays?) launch failure. It isn't sabotage. But as several really bright people have said in the recent past (I am thinking specifically about Burt Rutan and Musk), getting into orbit is hard, really hard. It takes an extraordinary level of attention to detail to get everything right. And just a little slacking off has terrible effects.

author: hamster_nz
author_rank: Super Contributor
timestamp: October 23, 2018, 11:14:26 pm
content: It sounds like some percussive maintenance was at fault for the launch failure:https://www.space.com/42208-soyuz-abort-russia-investigation-update.htmlQuote
Panasonic NCR 18650GA 3500mAh keeps dying after short period of use - Page 1
Forum section: electronics / general

author: zillah
author_rank: Contributor
timestamp: October 29, 2018, 10:55:19 am
content: Dear ExpertsI bought 2 pairs of these Panasonic NCR 18650GA 3500mAh High Current Lithium Batteries on Jan 2017 and Dec 2017 from a seller below :https://www.lanplus.com.au/index.php?route=product/product&product_id=246to be used on a headlight below :https://www.ebay.com.au/itm/BORUIT-UPGRADED-RECHARGEABLE-CREE-13000LM-3T6-3X-XM-L2-LED-HEADLAMP-TORCH-USB/302095643393?epid=886556492&hash=item46564db301:g:gKAAAOSwwKxbtNGe:rk:1:pf:0The one that I bought on Jan 2017 died on me after 10 months though I am not a heavy users and I am not charging them every dayThe one that I bought Dec 2017 died on me yesterdayWhen I said died I meant not getting charged using different way of charging 1-Using USB car and 2- via a portable charger as in the snapshot belowhttps://imgur.com/a/VXZTRF6Is this normal for the life span of the Panasonic NCR 18650GA 3500mAh ?Thanks

author: wraper
author_rank: Unknown
timestamp: October 29, 2018, 11:12:44 am
content: Nitecore charger should be OK. Dunno what your second charger is but it's very easy to kill lithium batteries with crappy charger. Likely internal pressure valve disconnected the battery from positive terminal due to internal pressure build up.

author: zillah
author_rank: Contributor
timestamp: October 29, 2018, 11:15:11 am
content: QuoteThe other is via the headlight itself which has USB charging cables hooked to the flashlight to charge battries

author: amyk
author_rank: Super Contributor
timestamp: October 29, 2018, 11:59:31 am
content: Check what voltage they're being charged to... and what voltage they currently show.Make sure that you really have a 4.2V charger, since some lion cells are now 4.25V or even 4.35V and chargers for those will quickly kill a 4.2V cell.

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 29, 2018, 01:02:06 pm
content: Quote from: amyk on October 29, 2018, 11:59:31 amI had a battery fail in one of those portable routers way quicker than expected because the charger they put in charged it to 4.23V.

author: zillah
author_rank: Contributor
timestamp: October 29, 2018, 07:23:28 pm
content: QuoteHow can I check that and the current charger showing nothing ?https://imgur.com/a/VXZTRF6Thx

author: wraper
author_rank: Unknown
timestamp: October 29, 2018, 07:34:59 pm
content: Quote from: zillah on October 29, 2018, 07:23:28 pmAs I wrote, most likely battery was disconnected from positive terminal due to safety pressure valve. So it's open, no current will flow.https://batterybro.com/blogs/18650-wholesale-battery-reviews/18306003-battery-safety-101-anatomy-ptc-vs-pcb-vs-cid
TV wattage backside vs label - Page 1
Forum section: electronics / general

author: Jan Audio
author_rank: Frequent Contributor
timestamp: October 28, 2018, 04:46:53 pm
content: Hi, i have this TV, it says 45Watt on the back, and the A+ label says 17Watt.How does it work ?, is the 17Watt for energy saving mode or something ?Wich one to trust ?, the backside or the manual ?thanks

author: MrMobodies
author_rank: Super Contributor
timestamp: October 28, 2018, 07:11:40 pm
content: The only way to find what it is really drawing is to plug it into one of those energy consumption plugs and set it to watts.

author: Monkeh
author_rank: Super Contributor
timestamp: October 28, 2018, 07:13:10 pm
content: 45W power supply. Probably 17W consumption under a specific test cycle.

author: ConKbot
author_rank: Super Contributor
timestamp: October 28, 2018, 09:29:41 pm
content: A lot of TVs come with the brightness turned down to medium/low brightness by default, so they can get qualified for energystar or whatever local energy saving qualification is applicable.So probably 17W as it came from the factory, and closer 45W when you turn the brightness up to max and are showing a bright scene.

author: Jan Audio
author_rank: Frequent Contributor
timestamp: October 29, 2018, 02:03:06 pm
content: Ah, the supply is 45W max and the actual usage can be below that, its some standard PSU part or something maybe.If you take the average of all power saving options including screen off you are below half already.They have energy saving mode that makes the screen turn dark and light, ofcourse i have all these settings off.I need such a thing to find out to measure WATTs, hope they not so expensive.
Hunting for instructions for a 'No Name' (PM001-A) power consumption monitor - Page 1
Forum section: electronics / general

author: Deodand2014
author_rank: Regular Contributor
timestamp: October 28, 2018, 03:39:40 am
content: I found this 'PM001-A' power consumption meter while cleaning up, but the instructions seem to have been separated from the unit. I did a quick google search but could not come up with anything.From memory I got this from a discount shop (Red Dot or The Reject Shop) a few years ago, they certainly are not selling anything like it at the moment.I've attached pictures of the top and bottom of the unit just in case this reminds anyone of any specific model as I would like to use it again and the instructions (Preferably in clear English.) would be critical.

author: Deodand2014
author_rank: Regular Contributor
timestamp: October 29, 2018, 08:07:27 am
content: A bit more research online shows that an identical appearing device is sold via Amazon under the brand name Ensupra (It's also a give away with cheap solar panels apparently.) Unfortunatly the instructions are not online.If anyone has a scan of a copy of them I would be very greatful.

author: MrMobodies
author_rank: Super Contributor
timestamp: October 29, 2018, 10:05:44 am
content: I found a manual for an identical model for all languages here:http://www.ted.net.pl/p/_//00/0019/001906/gb202-instrukcja.pdfAh sorry that is the European model unless they provided adaptors to go in there flush over top to suit what country they're sold in.They look identical.

author: nali
author_rank: Frequent Contributor
timestamp: October 29, 2018, 10:36:45 am
content: Look up the approval number, gives a few similar models like this one almost identical except the buttons are swapped around...https://support.winplus.com.au/hc/en-us/article_attachments/200739145/Bauhn_Power_Meter_Manual_PA39085.pdfhttp://www.saaapprovals.com.au

author: Deodand2014
author_rank: Regular Contributor
timestamp: October 29, 2018, 03:17:34 pm
content: Looking at mine I'd say it's probably the first (European version) with the Australian three pin plug and socket installed. I've seen others with the US and UK plug designs but the main body is unchanged. At least now I know that there is a version available through Aldi. But given that that company did not impress when I visited their store...I'm actually surprised Dave hasn't torn down one of the Arlec branded three button power consumption meters, or for that matter the ones from Aldi, which from the available information appear to be a 'generic' model with a wide range of brand names (Ensupra, Green/Blue, Bauhn & EnerGenie, etc) attached.
TI BLE chips have a security problem: BLEEDINGBIT - Page 1
Forum section: electronics / general

author: madires
author_rank: Super Contributor
timestamp: November 02, 2018, 12:56:16 pm
content: It seems to be a serious security problem:https://armis.com/bleedingbit/

author: pigrew
author_rank: Frequent Contributor
timestamp: November 02, 2018, 07:28:25 pm
content: I didn't see any proper details yesterday, but there were some details in the press releases. One issue was a buffer management issue which allows an attacking slave/peripheral to get private data from the host, leading to a takeover. This was fixed earlier this year in a BLE stack update. I'm not sure if the fix was in the open-source code or the stack library's blob.The second issue is that the firmware update (OAD) over BLE is unsecured by default, and some users of the chip left it enabled in unsecured mode. TI's response seems reasonable, and I expect that the users of the chip will release security updates shortly. These attacks are over BLE which requires physical proximity, but there could be a worm-like attack, hopping from one device to the next.
I called and the 1980s answered - Page 1
Forum section: electronics / general

author: MrMobodies
author_rank: Super Contributor
timestamp: October 27, 2018, 10:28:19 am
content: Nice but does it play Ultravox?Just my sense of humor.

author: ebastler
author_rank: Super Contributor
timestamp: October 27, 2018, 01:48:01 pm
content: So would it record the incoming calls over your music (on the cassette which you had played last and left in the deck)?A strange combination of devices...
What's up with the PM's? - Page 1
Forum section: electronics / general

author: Housedad
author_rank: Frequent Contributor
timestamp: October 26, 2018, 08:42:13 pm
content: When I send a PM to someone on EEVBLOG forum, the system fails to record my sent PM. The pm's I have received are dutifully recorded. I looked all over for a option in the profile sections, but nothing there.What am I missing?

author: MK14
author_rank: Super Contributor
timestamp: October 26, 2018, 08:51:04 pm
content: There is a well hidden option, which needs to be ticked, to enable sent items to be stored.If I remember correctly, you have to scroll down a fair way, in order to see it.To say it is extremely easy to miss, is a massive understatement!Look at the bottom of the page, with the form/page, you make the PM on.Quote

author: Housedad
author_rank: Frequent Contributor
timestamp: October 26, 2018, 09:09:23 pm
content: Thanks for that. I always thought I was observant, but that one got me. Never saw it on individual pm's like that on other boards.Live and learn.

author: MK14
author_rank: Super Contributor
timestamp: October 26, 2018, 09:57:31 pm
content: You're Welcome!I mainly know the answer myself, because a while ago, I also missed the option, and wondered why my sent PMs were missing.
Using wifi speakers with android tv - Page 1
Forum section: electronics / general

author: Wifidroid
author_rank: Newbie
timestamp: October 29, 2018, 02:19:19 pm
content: Hi. I recently got a skyworth android tv, then my daughter won a set of speakers (fujitsu eclipse TD -M1) which works on wi fi. I can't get it to work on my tv because I cant download the app, bd there's no bluetooth conmectivity on the speakers. I got aux 3.5mm cables, but no output either. The speakers are really nice and I'd really appreciate any help here to make it work. I googled and can't find any solutions. Thanks in advance!
"Australites" ("Tektites") Have any of you australians ever found any in the wil - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: October 25, 2018, 01:24:17 pm
content: "Tektites" are interestingly shaped pieces of glass which were originally part of the Earth but were turned molten hot and ejected into space by some cataclysmic event, probably a meteor impact in the past, becoming molten blobs which later underwent re-entry, giving them strikingly interesting shapes.The one that I have here right now is small but quite detailed and its surface is pristine, but its also quite difficult to photograph well because its shiny.The webcam photo will have to do for now (or at least until I have had my morning coffee).Here is a paper which describes them.https://repository.si.edu/bitstream/handle/10088/823/SCES-0017.pdfAnyway, I think they are kind of neat. They are heavy for their size, smooth and make good objects to use when one needs a 3d object.I guess I am curious if any of you have ever found any while hiking. It seems that their incidence varies with most of them to date having been found in the southern parts of Australia but there are other fields that seem to have come from the same or similar impacts in a wide area that extends several thousand kilometers north (and both eastward and westward)
Old traning bookles from Australia Post and Telecom Australia? - Page 1
Forum section: electronics / general

author: mictas
author_rank: Regular Contributor
timestamp: October 27, 2018, 01:17:59 pm
content: So, I have gotten access to some of the training booklets from Australia Post and Telecom Australia, from around the late 60's and early 70's and I have been getting them scanned in, edited and converted to PDF file. So they can be easily viewed or printered, if wanted.I was wondering if I can share these with people openly on here or else where, without taking the full legal force from both or either company?I don't know if I should, but I will link to one that I have posted on megahttps://mega.nz/#F!vkZFQKpL!OonPeO5VLdDJbOf3PYXtvQI mean, would anyone be interested in having access to these as well?