hybridfree/eevblog-posts huggingface dataset:
how to ask David Jones - Page 1
Forum section: electronics / general

author: handaza
author_rank: Newbie
timestamp: March 27, 2019, 12:54:43 pm
content: Hello,I want to ask David L. Jones a question that may result in a new youtube episode.do you know which forum section he watches? how can I get his attention to my question?thanks

author: JPortici
author_rank: Super Contributor
timestamp: March 27, 2019, 01:12:47 pm
content: you can send him a private message or an email ->https://www.eevblog.com/about/contact/

author: handaza
author_rank: Newbie
timestamp: March 27, 2019, 01:18:49 pm
content: thanks a lot JPortici for your reply

author: EEVblog
author_rank: Unknown
timestamp: March 27, 2019, 01:46:53 pm
content: Quote from: handaza on March 27, 2019, 12:54:43 pmUnfortunately most questions and requests do not result in an episode, like 99.9% of them, but shoot.

author: Tony_G
author_rank: Super Contributor
timestamp: March 27, 2019, 03:51:59 pm
content: Quote from: EEVblog on March 27, 2019, 01:46:53 pmOT but this reminded me of when I first moved to the US 20 years ago. I'd be out in a bar and someone would ask where I was from. I'd tell them Wollongong then say 'but I lived in Sydney for 10 years'. Some of them would respond, 'Oh I know someone from Sydney, would you know them?'I'd explain that Sydney is a big city (not like living in the scrub) but to go ahead because who knows. Several times it actually turned out that I had played Rugby with them either with Manly or St Ives.So I can relate to Dave's '...but shoot'TonyG
Android firewall with access denied by default - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: March 27, 2019, 12:17:59 pm
content: I connect my mobile phone to Internet only rarely, and only to get a webpage or make a search, at most a couple of times a year. When I am doing that, I want to deny all internet access to any AppANDto the OS, except for the specified webrowser(s) I am using.I don't want any updates whatsoever, no security updates, nothing. My phone usually is used as a phonline only, without any Internet services. It's a rooted generic Android 4.2.2Never used a mobile firewall before.Any recommendation for a good and trusty (open source) Android fierwall, please?

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 27, 2019, 01:06:03 pm
content: I use NetGuard. It doesn't need root and works great.I have it set to block everything by default and only let through what I decide.

author: rdl
author_rank: Super Contributor
timestamp: March 27, 2019, 02:40:14 pm
content: Quote from: RoGeorge on March 27, 2019, 12:17:59 pmQuote from: TERRA Operative on March 27, 2019, 01:06:03 pmI could sure use something like that for Windows 7The only thing I've found to work is unplug the ethernet cable.
Thoughts on AVCHD vs MP4 for technology videos on YouTube - Page 1
Forum section: electronics / general

author: Tony_G
author_rank: Super Contributor
timestamp: March 24, 2019, 01:43:52 am
content: Hey All,I've been doing my channel in 35MBps MP4 on Canon R600 & R700 cameras. I've never really thought about using AVCHD but I just acquired Adobe Premiere Pro and they have a transfer utility that understands the AVCHD format.All the information seems to imply that AVCHD has better resolution and is easier to work with but when I took some sample clips I really couldn't notice any difference.Anyone have any experience/thoughts on whether one should move to AVCHD or just stick with MP4.Thanks,TonyG

author: amyk
author_rank: Super Contributor
timestamp: March 24, 2019, 04:24:01 am
content: I think MP4 (H.264) is fine for basically all videos today.

author: rsjsouza
author_rank: Super Contributor
timestamp: March 25, 2019, 05:09:40 pm
content: Quote from: amyk on March 24, 2019, 04:24:01 amWell, it is fine for videos up to 1080p. According to the rederence below, AVCHD goes beyond that.https://m.dvdfab.cn/resource/video/avchd-vs-mp4I always get confused between the MPEG-4 codec and the MP4 container. I think this was a deliberate choice to confuse people in favour of MP4, but maybe it is just me...

author: EEVblog
author_rank: Unknown
timestamp: March 26, 2019, 12:14:54 am
content: I used to use 28Mbps AVCHD but have switched to 20Mbps XAVC S MP4 on the new camera. 60Mbps if it's 4KMajority of tech videos don't need high bitrate because there is little moving footage. i.e. tripod shots of products and/or talking head etc.

author: rsjsouza
author_rank: Super Contributor
timestamp: March 26, 2019, 02:28:19 am
content: Quote from: EEVblog on March 26, 2019, 12:14:54 amDave, for technical content, do you see much advantages to 4k? (Apart from the coolness factor, of course).I know that a talking head video does not benefit at all but, when showing a PCB, do you see it as a benefit to having the extra resolution so you don't see the need to take hi-res photos of the board?

author: EEVblog
author_rank: Unknown
timestamp: March 27, 2019, 10:04:51 am
content: Quote from: rsjsouza on March 26, 2019, 02:28:19 amYes, for teardowns I would usually shoot 4K, it lets you zoom in to more detail in editing if needed.There are reports that 4K rendered down to 1080p is sharper and better quality than 1080p footage shot on the same camera. I think I did a test of this on the 2nd channel someone at the time, but don't recall. But 1080p60 beats 4K rendered down to 1080p30
Imagine trying to do datalogging on this:  Dripping pitch - Page 1
Forum section: electronics / general

author: Housedad
author_rank: Frequent Contributor
timestamp: March 26, 2019, 02:59:12 am
content: Of all the more insane experiments that Physicists have come up with, here we have a one of the longest run experiments ever. Imagine data logging this for 70 to 80 yearshttps://youtu.be/UZKZF7FNh_0https://www.rte.ie/news/2013/0717/463097-trinity-college-dublin-pitch-experiment/

author: LapTop006
author_rank: Unknown
timestamp: March 26, 2019, 01:49:15 pm
content: ... and that's theyoungerof thewell known pitch drop experiments, by 17 years.

author: CatalinaWOW
author_rank: Super Contributor
timestamp: March 26, 2019, 03:55:48 pm
content: Just the thought experiment is fun. You probably want 10X margin on Nyquist, so a sample interval of about once per decade. So plan on about one or two recording technology changes between samples. Data storage is simpler, sort of. Only old technology has assured longevity to maintain the data. But only if you use acid free archival type papers.Data analysis also leads down some fun paths. You need three samples to get any start of meaningful statistics. So the data reduction can't start until a time interval longer than the life of most civilizations has passed (see thread on this subject). Maybe it can become a reason to save our civilization. "We can't collapse until we finish this experiment."

author: Housedad
author_rank: Frequent Contributor
timestamp: March 26, 2019, 04:14:32 pm
content: Quote from: CatalinaWOW on March 26, 2019, 03:55:48 pmThat brings to mind the radio series 'Hitchhikers Guide to the Galaxy'. The alien "hyper-intelligent pan-dimensional creatures" created Deep Thought and the Earth computer and the experiment lasted billions of years.

author: edy
author_rank: Super Contributor
timestamp: March 26, 2019, 10:01:15 pm
content: This dripping pitch reminded me of the old ?myth? that glass is a very viscous fluid and that it slowly sags as well, which is how they explained that in old buildings the glass pane was thicker at the bottom than the top. Apparently this was not true, they installed it that way. So glass does not sag very slowly, although it is still an amorphous "fluid"? Or is our experiment not long enough?
Electroluminous Paint? - Page 1
Forum section: electronics / general

author: tpowell1830
author_rank: Frequent Contributor
timestamp: March 13, 2019, 11:10:49 pm
content: I saw this on YT today and was wondering if this was a real thing. If so, it is awesome.https://www.youtube.com/watch?v=xSXB5H_F2Kw&feature=youtu.be

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 14, 2019, 12:07:28 am
content: Ben Krasnow (Applied Science) did a Youtube video recently:.

author: Mr.B
author_rank: Unknown
timestamp: March 14, 2019, 12:40:51 am
content: What an awesome product.

author: tpowell1830
author_rank: Frequent Contributor
timestamp: March 14, 2019, 09:45:10 pm
content: I used to think that LEDs were the cat's meow, but this stuff is revolutionary.

author: Marco
author_rank: Super Contributor
timestamp: March 14, 2019, 10:40:09 pm
content: So given that people are applying this to cars I assume it lasts a whole lot longer than EL wire? Also I wonder what kind of capacitance those whole car electroluminescent lights have ... I suspect you wouldn't want to get that discharged across your chest.

author: vk6zgo
author_rank: Super Contributor
timestamp: March 18, 2019, 11:54:53 pm
content: They were pushing something like this for road signs back in the '70s/'80s.It was going to be "the next big thing", until someone pointed out reflective signs do the same job with zero power requirements.Maybe they have a more viable market now amongst the weirdos who like to put silly lights all over their cars.

author: BrianHG
author_rank: Super Contributor
timestamp: March 19, 2019, 12:31:39 am
content: Example cars:

author: coppercone2
author_rank: Super Contributor
timestamp: March 21, 2019, 12:54:12 am
content: where is the fierrro ?

author: rcarlton
author_rank: Contributor
timestamp: March 23, 2019, 02:07:14 pm
content: Very cool ideas.

author: tpowell1830
author_rank: Frequent Contributor
timestamp: March 23, 2019, 10:44:50 pm
content: Quote from: rcarlton on March 23, 2019, 02:07:14 pmThis appears to be a good candidate for a billboard. This would be better than LCD w/backlighting or LEDs because it does not appear to be very intense lighting. Since billboards are located mostly on motorways, this would probably be less distracting for drivers, yet a pleasant eye candy for interested observers.Safety third...

author: ebclr
author_rank: Super Contributor
timestamp: March 24, 2019, 10:48:41 am
content: It's cool but very very expensive

author: tpowell1830
author_rank: Frequent Contributor
timestamp: March 25, 2019, 11:04:41 pm
content: Quote from: ebclr on March 24, 2019, 10:48:41 amAnd process/labor intense.
Reflow soldering oven help/suggestions - Page 1
Forum section: electronics / general

author: kylehunter
author_rank: Regular Contributor
timestamp: March 23, 2019, 02:21:04 pm
content: Hello all,My company does prototyping board soldering, with a few small-scale production runs of ~10-20 boards each week, on top of <5 prototypes a week. Up to this point, all SMD components have been reflowed using a custom hot-plate setup. This works well, but it is quite slow, and I'm sure we aren't getting the proper solder joints considering the reflow profile we are following isn't perfect.We would like to upgrade to a proper reflow oven, but with articles like this:https://www.sparkfun.com/tutorials/59, and many people complaining of reliability and other issues with "cheap/IR" ovens, it makes me nervous. We really don't have any real issues with our current method, other than what I already mentioned, so if we upgrade, it needs to be worth it. I am not interested in a toaster oven conversion, nor any other DIY solutions, as this needs full traceability and needs to look professional in an office.We're looking to stay under $10k, 120V or 220V is fine. The best looking ovens I can find seems to be made by Manncorp, specifically the MC-301https://www.manncorp.com/reflow-soldering/batch-convection-reflow-ovens. I can't find any reviews or anything on this, so I'm hesitant to go for it, since I don't if it has any of the issues that other desktop models do. Same with a model by eurocircuits.I have looked at various used conveyor belt systems, and they just seem like such a major overkill for our needs. This falcon 5c seems amazing, but it is out of our budget for the time being..https://www.ebay.com/itm/Sikama-Falcon-5C-Conduction-Convection-Desktop-Solder-Reflow-Oven/303003122930?. But if this one is that much of a step up from others, let me know, as it may be worth waiting to get that.So if anyone has any input or suggestions, I would really appreciate it. Or if my $10k figure isn't reasonable, let me know also!Thanks!EDIT: Here's one of the well priced used units, within our price range, but just seems so overbuilt for our needs..https://www.ebay.com/itm/Manncorp-CR-4000-4-zone-SMT-reflow-oven-compact-conveyor-WORKING-GREAT/162827330447?

author: kylehunter
author_rank: Regular Contributor
timestamp: March 25, 2019, 10:16:14 pm
content: Bump.I talked to Manncorp, and there is not any active cooling on their bench top oven. So I would have to wait for it to cool down after each board, just like we do now..Seems like the only option other than used now, is the F-5c from sikama. It seems absolutely perfect, but it is 35k new, and 20k used... That is more expensive than some medium scale full sized ovens. I don't understand why it is so much.. Which brings me back to the overbuilt used ovens again..https://www.sikama.com/falcon-5c/
Veritasium's new video on video history - Page 1
Forum section: electronics / general

author: Cliff Matthews
author_rank: Unknown
timestamp: March 30, 2019, 12:27:16 pm
content: I was almost going to post this 13-minute video history compendium in primers but it's not technical enough. Still, it might be interesting enough to bookmark for some to share with non-technical people. Links to other resources below video. IMO, Dave really could have benefited by having a quick snap-on gimble for sharing his recent flood nightmares. Enjoy!

author: BrianHG
author_rank: Super Contributor
timestamp: March 31, 2019, 12:56:52 am
content: Here, Ill fill in so more in depth videos on the subject:https://youtu.be/l4UgZBs7ZGo?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/v5OANXk-6-w?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/NUaowcXQtOo?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/dX649lnKAU0?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/InrDRGTPqnE?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/3JFt6t6ijLs?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ranhttps://youtu.be/0aFhzGEBQlk?list=PLv0jwu7G_DFUGEfwEl0uWduXGcRbT7Ran

author: Cliff Matthews
author_rank: Unknown
timestamp: March 31, 2019, 01:12:02 am
content: Thanks, been working on TV's since the '60's but I'd never seen a history so compacted (and with the usual Veritasium flare). Sometime's when trying to explain things, people get lost in the details. This way I'll save time and say, "here, watch this.."

author: helius
author_rank: Super Contributor
timestamp: March 31, 2019, 01:29:19 am
content: Pretty slick for those who didn't already know the material.A couple details (is it Easter yet?):The outdoor talking shots are from a GoPro mounted on the flash shoe of a VHS camcorder.At 3:50, the animation of the inside of a CRT shows a clearly impossible level of detail for the very wide scan lines. But it is more clear what the picture is than if it was done accurately, so it works I think.

author: EEVblog
author_rank: Unknown
timestamp: March 31, 2019, 02:31:28 am
content: Quote from: Cliff Matthews on March 30, 2019, 12:27:16 pmNope.Here is the scenario:1) Shit happens2) Panic3) Grab whatever camera happens to be lying around that has a card and battery and press record.Zero time to even enable stabiliser mode on existing camera let alone find a gimbal thingo, undo existing tripod base plates and attach it all, and hope it has a charged battery etc.
Reflash a PICKit3 with a PICKit2? - Page 1
Forum section: electronics / general

author: Roze
author_rank: Contributor
timestamp: March 23, 2019, 10:19:00 pm
content: Hi,MPLABX 5.15 bricked my PICKit3 with its firmware update and I've tried to get it into Bootloader mode but it does not work. So, can I re-flash my PICKit3 with my older PICKit2 and if so, how and where should I connect it on the PCB of the 3?//Kind regards

author: hli
author_rank: Frequent Contributor
timestamp: March 24, 2019, 09:05:52 pm
content: Yes. I found a tutorial outlining how to do this using another PK3, but since I flashed my DIY PK3 with a PK2 I know it works basically similar. Look athttps://blog.mbedded.ninja/programming/microcontrollers/pic-and-dspic-family/how-to-unbrick-a-pickit-3/.But you can also try to use the standalone MPLab programmer to connect to the PK3 and see whether it can rescue it (it is better in that regard than MPLabX in that regard).

author: Roze
author_rank: Contributor
timestamp: March 25, 2019, 05:02:10 am
content: Thank you kindly.I will try this as soon as I get back from work today.

author: MarkF
author_rank: Super Contributor
timestamp: March 25, 2019, 06:42:10 am
content: You might try thePICkit 3 Programmer App and Scripting Tool v3.10from the Microchp archive to burn the firmware.See Dave's video
Youtube search filtering by date disabled - Page 1
Forum section: electronics / general

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 25, 2019, 01:50:54 am
content: Have you noticed that when you search for videos on Youtube, neither the "Upload date" filter nor the "Sort by date" filter work anymore?It is by design.Youtube says it is supposed to be temporary, but even after a week of outage, they refuse to say when; just that they believe it is temporary. No guarantees, though, methinks.
Conductive silicone - Page 1
Forum section: electronics / general

author: Boogami
author_rank: Contributor
timestamp: March 26, 2019, 06:38:43 pm
content: Hello,do you know any conductive silicone available for buying. I want to make custom finger probes like this but I can't find any two part silicone.I found some instructables that use graphite powder in the mix to make silicone conductive but I want something more professional.
Festool 18V  battery pinout ? - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: March 24, 2019, 08:56:30 am
content: Festool batteries have 5 pins. 2 are the obvious +/- 18V. Normally there is a 3rd pin for temp. Any idea what those 3 pins are for??Sent from my X using Tapatalk
IBM 9020 Core Memory Module from the FAA Air Traffic Control System - Page 1
Forum section: electronics / general

author: VK3DRB
author_rank: Super Contributor
timestamp: March 23, 2019, 04:54:05 am
content: Actually those card readers were used up until the early 1980's in Australia, not the 70's. I should know - I worked in them.

author: German_EE
author_rank: Super Contributor
timestamp: March 23, 2019, 08:11:15 am
content: Chunky, and probably a lot easier to repair than the 64Gb SSD I have on my workbench right now.
Found a part for Dave - Page 1
Forum section: electronics / general

author: cowasaki
author_rank: Frequent Contributor
timestamp: March 21, 2019, 08:51:21 am
content: https://www.oreillyauto.comSearch for part 121G

author: Neilm
author_rank: Super Contributor
timestamp: March 21, 2019, 07:57:18 pm
content: They are sold out

author: drescherjm
author_rank: Contributor
timestamp: March 21, 2019, 09:49:58 pm
content: Darn. I could use one.I see why you did not post the direct link..

author: Electro Detective
author_rank: Super Contributor
timestamp: March 21, 2019, 10:50:54 pm
content: I clicked on this post thinking DJ scored a 'part' in a new sci-fi moviesorting out design bugs in the ship console, and fine tuning the phasors,or disruptors, depending on what team he was on

author: hopski
author_rank: Regular Contributor
timestamp: March 21, 2019, 11:06:43 pm
content: Ha Ha, Only in America

author: Brumby
author_rank: Unknown
timestamp: March 23, 2019, 06:42:54 am
content: Quote from: hopski on March 21, 2019, 11:06:43 pmI don't think so.It doesn't have the 121G reference, but it's been mentioned here before...https://www.jaycar.com.au/flux-capacitor/p/OUTATIME

author: Roeland_R
author_rank: Regular Contributor
timestamp: March 23, 2019, 06:47:33 am
content: Quote from: Neilm on March 21, 2019, 07:57:18 pmPerhaps you can get one when you travel back in time...
Wallabys are a thing in Texas - Page 1
Forum section: electronics / general

author: ScottBLAM
author_rank: Contributor
timestamp: March 20, 2019, 11:14:58 pm
content: We just got a bit closer to becoming Australia today.https://media.fox4news.com/media.fox4news.com/photo/2019/03/20/0320wallaby2_1553111768124_6922470_ver1.0_640_360.jpgDo you guys want any armadillos, opossums, coyotes, nutria, or any of our many deadly spiders or snakes? Or if you just want to trade a Koala with Chlamydia for a Raccoon with Rabies Just ask. We supposedly have Big Foots(Feet?) in East Texas(Yes, Louisiana/Arkansas side go figure) too so maybe they can visit.

author: Brumby
author_rank: Unknown
timestamp: March 21, 2019, 01:04:11 am
content: We have enough bio-disasters from introduced species as it is. Please keep your problems to yourself.Seriously ... no thank you (and that includes East Texas in its entirety.)

author: KJDS
author_rank: Super Contributor
timestamp: March 21, 2019, 09:22:47 pm
content: There used to be a few colonies of wallabies in the UK, but I think most have now died out.

author: Zero999
author_rank: Super Contributor
timestamp: March 22, 2019, 12:28:15 pm
content: Quote from: KJDS on March 21, 2019, 09:22:47 pmNo they're still in the UK, according to Wikipedia.

author: Neomys Sapiens
author_rank: Super Contributor
timestamp: March 25, 2019, 07:59:30 pm
content: Alive and well on the Isle of Man.
lcr-T4 Transistor Tester mod to allow display to stay on? - Page 1
Forum section: electronics / general

author: njkmonty
author_rank: Contributor
timestamp: March 20, 2019, 09:19:10 am
content: does anyone know a mod that can allow the screen to stay on when testing a component? instead of that standard 10 sec etc and turning off?i find it frustrating when using the tester then it turns off!!im not sure if this schematic is correct however found it online

author: drescherjm
author_rank: Contributor
timestamp: March 21, 2019, 09:47:34 pm
content: I expect this would be a software mod.

author: madires
author_rank: Super Contributor
timestamp: March 21, 2019, 10:23:47 pm
content: Yep, program one of the original firmwares (k or m-firmware). Please seehttps://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/
Anyone experienced this type of Google search hits? - Page 1
Forum section: electronics / general

author: 4cx10000
author_rank: Regular Contributor
timestamp: March 20, 2019, 09:48:07 pm
content: A good friend of mine called me and wanted me to help him search for a wiring diagram to an old Chevrolet Monte Carlo. He told me that he had tried, but every Google search revealed in websites that looked more or less made by unscrupulous criminals, and yes, he was right, and I knew it.All this started some time ago, but it seems to get worse for each day coming and now, if you, as an example, use a Google search with "wiring diagram 1971 Chevrolet Monte Carlo:pdf", you get lots of hits, but almost all of them end up at these websites promising exactly what you want if you register an account. I tried some of these sites but at once Malwarebytes popped up telling me that is not a good idea to continue.No, this post is not a call for help to find this diagram, I just wanted to know if any of you have experienced this or is it just me going crazy and soon find myself tied up in a bed at a mental hospital.

author: emece67
author_rank: Frequent Contributor
timestamp: March 20, 2019, 10:04:54 pm
content: .

author: tooki
author_rank: Super Contributor
timestamp: March 21, 2019, 03:33:34 am
content: For what it’s worth,wiring diagram 1971 Chevrolet Monte Carlo:pdfisn’t the right syntax for restricting to a file type. (Ergo, it’s equivalent towiring diagram 1971 Chevrolet Monte Carlo pdf.)You need to enterwiring diagram 1971 Chevrolet Monte Carlofiletype:pdfOf course, this won’t fix the results containing fake PDFs with nothing but a link inside. But it will remove all the results that are onlymentionsof a PDF.

author: 4cx10000
author_rank: Regular Contributor
timestamp: March 21, 2019, 07:23:49 am
content: Yes, I know that it should be "filetype:pdf". However, as you wrote, it wont help much against these fake PDFs. Wonder if it is even possible for Google to do something about it ... or is it just a way to effectively screw up all pdf searches?
Big Things in Oz - Page 1
Forum section: electronics / general

author: NivagSwerdna
author_rank: Super Contributor
timestamp: March 20, 2019, 03:30:42 pm
content: Quite fun...https://www.telegraph.co.uk/travel/destinations/oceania/australia/galleries/australia-big-things-cult-phenomenon/merino/

author: Cnoob
author_rank: Regular Contributor
timestamp: March 20, 2019, 03:53:48 pm
content: I was expecting to see the Rocking Horse in Gumeracha, South Australia.https://en.wikipedia.org/wiki/Big_Rocking_HorseAlmost forgot the biggest pebble in the world Ayers Rock

author: tautech
author_rank: Super Contributor
timestamp: March 20, 2019, 11:31:08 pm
content: We grow big stuff in NZ too:

author: EEVblog
author_rank: Unknown
timestamp: March 21, 2019, 12:24:45 am
content: There are hundreds of themhttps://en.wikipedia.org/wiki/Australia%27s_big_things
Fortive; I can almost bet you don’t know the company  - Page 1
Forum section: electronics / general

author: schmitt trigger
author_rank: Super Contributor
timestamp: March 21, 2019, 03:19:21 am
content: Nevertheless it owns Tektronix, Fluke, Matco Tools and a host of other companies.https://www.fortive.com/I am only familiar with Gilbarco, because on a previous job we sold an electronic assembly for their gasoline retail pumps.

author: tooki
author_rank: Super Contributor
timestamp: March 21, 2019, 03:37:30 am
content: You lost the bet on me. :p(And probably on a lot of folks here, since this is a group of serious test gear nerds!)

author: electromotive
author_rank: Regular Contributor
timestamp: March 21, 2019, 03:43:49 am
content: Quote from: schmitt trigger on March 21, 2019, 03:19:21 amThe newest Gilbarco Veeder-Root pumps have built in video advertising. All it needs is a slot machine to squeeze every last nickel out of grandma.

author: EEVblog
author_rank: Unknown
timestamp: March 21, 2019, 05:48:20 am
content: Quote from: schmitt trigger on March 21, 2019, 03:19:21 amFortive is a Danaher spin-off

author: DC1MC
author_rank: Super Contributor
timestamp: March 21, 2019, 07:02:33 am
content: Quote from: schmitt trigger on March 21, 2019, 03:19:21 amWorst. Website. EVER. (for a F500 company)For the price of ONE of their midrange scopes they could have get something 169 times better than this POS.

author: schmitt trigger
author_rank: Super Contributor
timestamp: March 21, 2019, 01:34:35 pm
content: Quote from: tooki on March 21, 2019, 03:37:30 amDarn! I lost. I'll have to e-mail some pixels to you...What color would you like them?Of course, with the ownership of both Tek, Fluke and all the smaller T&M companies acquired by these two (including the not-so-insignificant Keithley), there must possess several of the of the world's best T&M engineering teams.

author: HalFET
author_rank: Frequent Contributor
timestamp: March 21, 2019, 01:40:45 pm
content: Quote from: DC1MC on March 21, 2019, 07:02:33 amIf they had invested that much into R&D at Fluke they might have had a clamp meter that actually worked as well...

author: rdl
author_rank: Super Contributor
timestamp: March 21, 2019, 02:02:45 pm
content: Quote from: DC1MC on March 21, 2019, 07:02:33 amI would rate it a little better than Analog Devices and some others. At least there is something to look at with JavaScript turned off. And it says please when requesting me to accept marketing cookies. It is a bit sappy though.
Human Hotdog - Page 1
Forum section: electronics / general

author: GreggD
author_rank: Regular Contributor
timestamp: March 19, 2019, 05:23:29 pm
content: BigClive did a video on cooking hotdogs across mains. I had one of these about 52 years ago.Now BigClive has done a video (hard to watch) where he is the hotdog.

author: Gyro
author_rank: Super Contributor
timestamp: March 19, 2019, 07:13:46 pm
content: Too late...https://www.eevblog.com/forum/chat/cooking-hot-dogs-with-mains-electricity/
2mm wire to wire connector commonly available - Page 1
Forum section: electronics / general

author: metRo_
author_rank: Regular Contributor
timestamp: March 18, 2019, 10:35:21 pm
content: Hi,Can you recommend a cheap alternative to JST SM but with a 2mm pitch? I found ithttps://www.aliexpress.com/item/10Pair-Micro-JST-PH-2-0-2P-3P-4P-5P-6PIN-Male-Female-Plug-Connector-With/32959854422.html?spm=a2g0s.8937460.0.0.643c2e0eLwe1Zxbut I can't find the connectors and crimps. At JST website the PH series hasn't a male wire connector.Thank you
Faulty YouTube Filters. - Page 1
Forum section: electronics / general

author: Muttley Snickers
author_rank: Unknown
timestamp: March 16, 2019, 11:02:39 am
content: When searching for new or recently created YouTube videos I regularly use the drop down filter feature located below the YouTube logo after a search and it has suddenly stopped working on two different devices, the filter is now having no effect and all results are displayed.For example, I periodically do a search for multimeters and to avoid a list of previously watched or older videos I select "this month" from the filter list and then only results from this month are shown, could somebody please run a quick test just to see if YouTube is busted.https://www.youtube.com

author: TheWelly888
author_rank: Frequent Contributor
timestamp: March 16, 2019, 12:57:55 pm
content: Definitely faulty! Filter does not work, still shows years old videos!

author: ModemHead
author_rank: Frequent Contributor
timestamp: March 16, 2019, 01:43:25 pm
content: The "upload date" and "sort by" filters have no effect at all. I have bookmarks to list recent videos about various topics of interest to me (including multimeters) and none of them work.

author: Muttley Snickers
author_rank: Unknown
timestamp: March 16, 2019, 07:08:40 pm
content: Thanks very much, I use the filter feature quite often and it was definitely working normally a day or so ago and I just wanted to confirm that it wasn't something my end. I just tried the filter again and it's still not working.

author: metrologist
author_rank: Super Contributor
timestamp: March 17, 2019, 01:52:18 pm
content: Rumor is yt turned off the filters because they are incapable of screening graphic content, like from the recent massacres.
Aftermarket key fobs - Page 1
Forum section: electronics / general

author: fzabkar
author_rank: Super Contributor
timestamp: March 15, 2019, 01:14:12 am
content: I don't understand how this is possible. :-?Aftermarket key fobs are cheaper but open more doors than you may realise:https://www.abc.net.au/news/2019-03-14/aftermarket-key-locks-raise-safety-concerns/10899664I would have thought that all cars of a certain model would have key fobs that operated at the same frequency, but used different codes. Otherwise how could one program a new remote?

author: ataradov
author_rank: Super Contributor
timestamp: March 15, 2019, 01:24:03 am
content: I think someone is very confused. Sure, those cheap garage door openers only have like 7 combinations. But car key fobs are pretty secure.Is it possible that not only the fob was modified, but also the responder in the car to match the cheap fob?

author: fzabkar
author_rank: Super Contributor
timestamp: March 15, 2019, 02:07:22 am
content: The customer in that news article purchased an aftermarket key fob because the factory unit was too expensive. Therefore, ISTM that modifying additional components would defeat the purpose.

author: Benta
author_rank: Super Contributor
timestamp: March 17, 2019, 05:37:42 pm
content: That ABC article is rubbish. Car fobs only operate on a couple of frequencies and a fob needs to be paired with the car. After that, rolling codes are employed.It can of course happen that a generated code also triggers a different car, but the odds are enormous. Otherwise you'd see articles about this all over the place.
Atmega, USB 3.0, USB 2.0, I2C - Noise? - Page 1
Forum section: electronics / general

author: Tantalum
author_rank: Regular Contributor
timestamp: March 15, 2019, 04:01:32 pm
content: HelloI'm trying to design a PCB which will host a M.2 LTE Modem and antenna just behind.I need to avoid EMI as much as possible, but I don't have any scope to make measurements.So I'm trying to follow the best practices.The board has the following IC and buses:- Atmega @8MHz with external oscillator- INA260 current/voltage sensors, I2C 100kbps- Temp/humidity SI7013 sensor, I2C 100kbps- IMU, I2C 100kbps- LTC4367 overvoltage protection IC with charge-pump (400kHz???) to drive the Mosfet- USB 3 + USB 2 Mux (2.5GHz and 48MHz)- SIM Card MUX (1-4MHz)So, my questions?- Would it be a good idea to use a tin shield can over that stuff? Or would the tin can harm the performances of the LTE antenna located just behind (800-2600MHz)- Is it useful to add a ferrite bead on the Vcc line of the ICs, to avoid escaping of high frequency noise?Thank you

author: Simon
author_rank: Unknown
timestamp: March 17, 2019, 11:49:35 am
content: Please don't double post, it really gets peoples backs up.
How to build/get a transformer for Switch Mode Power Supply - Page 1
Forum section: electronics / general

author: hulaomr
author_rank: Newbie
timestamp: March 15, 2019, 07:23:33 am
content: Hi,I'm designing a AC/DC power supply which required a resonant transformer. I would like to learn a method to build one for fast prototyping.It's this an alternative?Perhaps, some company suggestion which offer this online, with decent lead time.Attached the transformer specifications as reference.Any suggestion is welcome.ThanksHu
Warming up electronics after shipping in winter ? - Page 1
Forum section: electronics / general

author: lordvader88
author_rank: Frequent Contributor
timestamp: March 14, 2019, 06:45:27 am
content: When I've gotten things like motherboards and videocard's delivered in the winter at well below freezing, I've let the sit for a while to warm up and not have water condensing on them and hopefully not mechanically stress anything.Anyone else cautious like that ? Should I do it with an LCD monitor too ?

author: Ranayna
author_rank: Super Contributor
timestamp: March 14, 2019, 07:19:29 am
content: Anything so cold that you can feel condensation even on the packaging will sit at home for at least a day.Do not put it directly next to the heaterRegarding fast temperature changes, a small anecdote: In the winter, when I open the window of my bedroom, where also the computer is located, I always hear sometimes really loud cracking sounds from my monitors. I usually open the window in the early morning, to get up better, so the computer is turned off.After several years doing this, the sound still makes me wonder, but so far nothing broke.

author: med6753
author_rank: Super Contributor
timestamp: March 14, 2019, 12:08:06 pm
content: Over this past winter I took delivery of a Siglent SDM3055 and a Fluke 8810A. Both of them were freezing cold from sitting in cold warehouses and delivery trucks. I let them sit for about an hour at room temperature before powering up. But even so it took a good 2 to 3 days of simply powered on idling before they really stabilized.

author: OwO
author_rank: Super Contributor
timestamp: March 14, 2019, 12:31:01 pm
content: Probably inconsequential compared to the thermal stress during reflow. The only thing I would be careful about is condensation. I would say it's fine to put it on top of the heater, warm it up, check for condensation, and power it on.

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 14, 2019, 12:43:16 pm
content: Not everything insde the assembly passes through reflow. Don't put it on a heater.

author: KJDS
author_rank: Super Contributor
timestamp: March 14, 2019, 07:14:47 pm
content: Caps on old IEC mains sockets with the built in filter were the most likely thing to suffer. Always stank when they blew

author: Neilm
author_rank: Super Contributor
timestamp: March 14, 2019, 07:57:33 pm
content: If you are looking at test gear I would definately allow it to settle. I have seen units that spec 12 hours recovery after shipping before powering up. It does resolve to 100 atto-amps though.

author: electromotive
author_rank: Regular Contributor
timestamp: March 14, 2019, 08:07:36 pm
content: Due to breathing issues, I keep the humidity in my house somewhat high. I always let hardware acclimate to the house temperature and humidity before use. No less than 24 hours. More than that is overkill here in Ohio, USA.
Question about CANBUS - Page 1
Forum section: electronics / general

author: eeguy
author_rank: Regular Contributor
timestamp: March 14, 2019, 03:09:03 am
content: Hello, I read that the higher the communication speed, the shorter the cable is required. What are the reasons for this relationship? Is it because of stability like the higher the speeds, the easier the data get corrupted or distorted so we need shorter cable to reduce the chance of such problem?

author: AndersJ
author_rank: Frequent Contributor
timestamp: March 14, 2019, 03:15:39 am
content: Capacitive loading increases with longer cables.

author: eeguy
author_rank: Regular Contributor
timestamp: March 14, 2019, 03:26:34 am
content: Thanks. Could you please explain what Capacitive loading is?

author: ataradov
author_rank: Super Contributor
timestamp: March 14, 2019, 03:29:13 am
content: What was wrong with the answers you've got the last time you asked this question?https://www.eevblog.com/forum/chat/relation-between-speed-and-cable-length-of-can-bus/msg2241657/

author: ataradov
author_rank: Super Contributor
timestamp: March 14, 2019, 03:30:24 am
content: Quote from: eeguy on March 14, 2019, 03:26:34 amA cable is two long parallel conductors. This is also a description of a capacitor.Cable is long, so transmission line effects come into play too.
NIST? - Page 1
Forum section: electronics / general

author: 6PTsocket
author_rank: Regular Contributor
timestamp: March 10, 2019, 10:07:21 pm
content: I understand that NIST may be under the budget axe but I am confused obout the current status. My "atomic" clock reset for daylight savings time. My shortcut to the live time signal page brings up a message that the address could not be found. Even links on the NIST web site do not work. A search, hitting anything that looked possible actually did find the signal but when when trying to set up a new shortcut, I lost it and could not find it again. Does anybody know the new address or any current news on the status of WWVB and WWVH? Thanks.Sent from my SM-G900V using Tapatalk

author: 0culus
author_rank: Super Contributor
timestamp: March 10, 2019, 10:09:33 pm
content: They are still running as far as I know. I can get WWV on 5 MHz shortwave in the evenings, and you can call (303) 499-7111 to hear the same broadcast via phone.

author: 0culus
author_rank: Super Contributor
timestamp: March 10, 2019, 10:11:36 pm
content: https://www.nws.noaa.gov/os/marine/wwv.htmThe latest news I can find is that NWS high seas advisories are no longer being broadcast by WWV/WWVH.

author: edpalmer42
author_rank: Super Contributor
timestamp: March 10, 2019, 10:54:49 pm
content: Interesting.www.time.govis broken, but .....time.govworks, but pictures are broken because they're looking forwww.time.govProbably just a DNS glitch. Was time.gov down during the government shutdown? Maybe they haven't got everything back working again.Ed

author: 6PTsocket
author_rank: Regular Contributor
timestamp: March 11, 2019, 07:40:06 pm
content: IT'S FIXED!! I emailed NIST and informed them of the problem. I got a fast response from a tech saying he tried it and it worked. I responded that even the link on the NIST site came up with "address not found. I found a link that did work but pressing the virtual "help" key on the time display brought up the same "address not found" message. I emailed him again and he said he would pass it on to their web master. A few hours later my shortcut icon works again. It seems strange that the US agency that supplies the primary standards for the country had to be told by some guy playing with his smartphone that their web site was screwed up. Could I be the only one to complain?Sent from my SM-G900V using Tapatalk

author: tpowell1830
author_rank: Frequent Contributor
timestamp: March 11, 2019, 10:11:48 pm
content: Quote from: 6PTsocket on March 11, 2019, 07:40:06 pmOur government runs like a well oiled machine...This is why I don't like the government taking over or starting any new bureaus... it just costs 10 times more than private enterprise and is 99% less efficient.EDIT: BTW, nice job 6 point socket...
MotoE Fire destroys all the bikes - Page 1
Forum section: electronics / general

author: JVR
author_rank: Regular Contributor
timestamp: March 14, 2019, 11:24:25 am
content: https://www.gpone.com/en/2019/03/14/motoe/fire-at-jerez-the-garage-housing-the-bikes-is-destroyed.htmlI'm glad I am not the insurer for those bikes, but what are the chances this is battery related?

author: Fred27
author_rank: Unknown
timestamp: March 14, 2019, 03:31:39 pm
content: Wow. That's an expensive fire. I was looking forward to watching MotoE when it started at the European rounds in May. I wonder if that will still happen.
ebay changes? - Page 1
Forum section: electronics / general

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 10, 2019, 02:31:39 pm
content: Is it me, or has the layout of purchase history changed so that the purchase date is no longer visible? Instead all you see is the estimated delivery date.Seems like a nice way to reduce complaints about long shipping times, especially with the global shipping program. Which I guess got its name because your package goes around the globe a few times first.That's some fine customer expectation manipulation.You have to go to each item's details and find the purchase date, then I paste it into the item's "note"...

author: joseph nicholas
author_rank: Frequent Contributor
timestamp: March 10, 2019, 02:43:20 pm
content: Yes, ebay has so many annoying features or bugs, take your pick. For example, they changed the search parameter presets. Instead of best match, you get listed most recently. The presets are not memorized in your meta-dater. It sucks.

author: HalFET
author_rank: Frequent Contributor
timestamp: March 10, 2019, 03:40:14 pm
content: Did they finally announce that the Global Demolition Program is out of its test phase? I'm never using it again after they managed to lose a parcel with a Solartron 8.5 digit dmm. R.I.P.

author: rdl
author_rank: Super Contributor
timestamp: March 10, 2019, 08:56:07 pm
content: I looked and all items have an order date on the left, but I don't have anything in transit, everything has been delivered.

author: floobydust
author_rank: Super Contributor
timestamp: March 10, 2019, 09:20:31 pm
content: Quote from: HalFET on March 10, 2019, 03:40:14 pmeBay won't combine shipping with their Global Shipping program, it's hilarious. I tried to order 10 little parts from a vendor and 10X the shipping feesRIP

author: oPossum
author_rank: Super Contributor
timestamp: March 10, 2019, 09:34:09 pm
content: Quote from: Alex Eisenhut on March 10, 2019, 02:31:39 pmThis happened to me a few weeks ago. The next day it was back to normal.
A feel-qood project - Page 1
Forum section: electronics / general

author: hamster_nz
author_rank: Super Contributor
timestamp: March 10, 2019, 08:43:05 pm
content: If you want a quick project to make yourself feel good, email a school that has a unit for kids with disabilities or a toy library, and ask if they would like any toys "switch adapted". Just graft in parallel with the "do something" switch.All it takes is a little bit of time, a little bit of wire, a 3.5mm mono line socket and a little bit of thread and you will make somebody's day.
Looking for a high temperature plug pack (wall wart) - Page 1
Forum section: electronics / general

author: aargee
author_rank: Frequent Contributor
timestamp: March 06, 2019, 01:31:20 pm
content: Most plug pack type supplies don’t seem to come with a temperature operating range, I’m looking for an Australian one that will withstand roof cavity temperatures of 40-50 degrees centigrade and supply 5VDC @2A, any clues where to get one? Or should I just look for a quality unit and hope for the best?

author: Gyro
author_rank: Super Contributor
timestamp: March 06, 2019, 02:00:25 pm
content: I may be over cautious but I don't think I would ever trust a wall wart in a roof cavity, it sounds like too much of a fire risk.I'd either look for something a bit more 'industrial' (metal cased) or feed the 5V supply up from below.

author: mariush
author_rank: Super Contributor
timestamp: March 06, 2019, 02:04:55 pm
content: 5v at 2A is pretty much most USB phone chargers can manage.You could buy a cheap one and just open it up and transplant the contents into an aluminum project box or something, making sure you insulate it from the metal.For example :https://uk.farnell.com/hammond/1550q/enclosure-diecast-30-1x55x60mm/dp/1823045Just drill two holes for the cables and you're done... if you're paranoid, maybe flood it in epoxy or flame retardant foam or whatever.If price is not a big deal, maybe get a 20-25va toroidal transformer, a bridge rectifier, a capacitor and a cheap 1$ dc-dc converter from eBay (or use linear regulator if the transformer output is low enough) and then again, insulate it in a metal box.

author: deadlylover
author_rank: Frequent Contributor
timestamp: March 06, 2019, 02:11:21 pm
content: Meanwellmake some, I think you'll have to get the interchangeable plug type ones so you can fit the Aussie plug on it if you have a strict requirement for the wall-mounted style (unless you're ok with a 'desktop' style one like a laptop charger, in which case there's lots of options).

author: NiHaoMike
author_rank: Super Contributor
timestamp: March 06, 2019, 02:52:56 pm
content: Just oversize it i.e. use a 4A module. It's not unusual at all for those wall warts to get above 50C on the outside at full load, so oversizing gives more room for a higher ambient.

author: aargee
author_rank: Frequent Contributor
timestamp: March 07, 2019, 03:24:12 am
content: Thanks all, I am following the path of over-sizing the specs and see how that goes.Next step may be the Al chassis version with suitable plug, as suggested.

author: David Hess
author_rank: Super Contributor
timestamp: March 07, 2019, 04:06:59 pm
content: Quote from: NiHaoMike on March 06, 2019, 02:52:56 pmExactly, if you cannot find something more suitable, then power derate one.

author: Zero999
author_rank: Super Contributor
timestamp: March 08, 2019, 04:17:07 pm
content: Quote from: David Hess on March 07, 2019, 04:06:59 pmYes, to help matters, the over-current protection normally has a negative temperature coefficient, which also provides some thermal protection by default.
Selective soldering machine - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: March 08, 2019, 07:51:00 am
content: https://img-9gag-fun.9cache.com/photo/aOYZebE_460svvp9.webmhttps://9gag.com/gag/aOYZebE

author: BrianHG
author_rank: Super Contributor
timestamp: March 08, 2019, 09:13:31 am
content: LOL, a soldering penis.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 08, 2019, 04:18:44 pm
content: Looks like miniature wave soldering. Much slower though, but a lot more frugal, so probably a lot less solder waste. Never saw that before.I saw laser selective soldering though such as this: