hybridfree/eevblog-posts huggingface dataset:
Data sheets for card reader controllers - Page 1
Forum section: electronics / general

author: albert9191
author_rank: Newbie
timestamp: January 14, 2019, 07:40:11 pm
content: Hey, I inserted a SD card into HP Pavilion 15 card reader, and my laptop shut down. I turned it back on and everything works fine, but the SD card and the card reader aren’t showing up in the Device Manager panel.I was in a rush and I needed the info on the memory card so I inserted the card into my friends’ laptop (HP Probook 450), and the same exact thing happened, the laptop automatically shut down and now the other computer also isn’t recognizing the memory card and the card reader.I think the SD card might be causing a short in the laptops, and I want to test out a few things to see if the problem is in the motherboard, the card reader or the card reader controller.If anyone has the datasheets of the card reader controllers that would be really helpful! Does anyone know where can I find them?The Pavilion 15 card reader controller isAlcor’s AK6485RB63-GLF-GR, the card reader controller on the second computer isRealtek RT5237S.Thanks in advance

author: amyk
author_rank: Super Contributor
timestamp: January 15, 2019, 04:15:13 am
content: That does sound like a short --- have you checked across the pins of the SD card with a multimeter?It might be better to find the schematics for the laptops.
The X3 Ion Thruster Is Here, This Is How It'll Get Us to Mars - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: January 13, 2019, 04:15:29 pm
content: Around 20x-40x more power than our current existing Ion thruster engines:

author: ConKbot
author_rank: Super Contributor
timestamp: January 13, 2019, 06:14:56 pm
content: I think its interesting at just how much of a role specific impulse plays on 'practical' deltaV ranges.(taken fromhttp://orbitalaspirations.blogspot.com/2011/10/rocket-equation-and-small-rockets.html)When you want to go real fast, your specific impulse better be real high, or the rocket equation is going to make your propellant mass fraction absolutely huge.

author: Nominal Animal
author_rank: Super Contributor
timestamp: January 14, 2019, 05:07:59 am
content: Hall effect thrusters have a specific impulse well above 1000 seconds.

author: raptor1956
author_rank: Frequent Contributor
timestamp: January 14, 2019, 06:21:51 am
content: The rocket equation is a bitch and it's one of the reasons that the folks planning to deflect an Earthbound asteroid of comet with a gravity tug really piss me off. They've spent decades promoting this approach and decrying other approaches yet they don't have an answer for how they plan to deal with the total dV they'll need to use a gravity tug. Think about it ... they would have to travel as fast as possible to intercept so the dV from Earth would need to be over 25Kmph just for the outbound leg. The asteroid or comet will be incoming at perhaps 25K-40Kmph so the total dV is now more like 50K-65Kmph. All of that just to arrive at the object and begin station keeping. In order to be effective as a tug it will need to have a non-trivial mass and that mass will have to be constantly moved to maintain station keeping requiring a lot of fuel. When you work through the rocket equation beginning with the mass of the tug when it arrives at station keeping then working backwards to launch and you have a rocket no one has ever seen or dreamt of. An Ion thruster might be useful for a gravity tug to maintain station keeping, but getting there will require conventional chemical rockets and more dV than feasible.When all is said and done I think the only practical approach to deflecting a large asteroid or comet is to use stand-off detonations of nukes -- one or many. You don't have to blow it up, just dump a ton of energy on one side of it and let the enormous cloud of gasses that are ejected push by impulse. If one is not enough no problem -- send as many as needed with a few more spares. I single moderate size rocket (Falcon Heavy) could launch a bus/truck with a dozen 1MT or larger warheads with 25-30Kmph dV. No need to burn more fuel to reverse as you can detonate as it passes by.Brian
MDR-RF810RK compatible receiver (863.52 MHz, 864.52 MHz)? - Page 1
Forum section: electronics / general

author: esrevinU
author_rank: Newbie
timestamp: January 13, 2019, 12:35:11 pm
content: Hi,I'm looking for a receiver like ANLEON S2-R Wireless Receiver but compatible with the TMR-RF810R transmitter (from MDR-RF810RK kit). Any idea on what should I look for? (cheap solution please)Thanks!
UNI-T DSO analysis software? - Page 1
Forum section: electronics / general

author: SScattered
author_rank: Contributor
timestamp: October 22, 2018, 10:14:09 am
content: I own a UNI-T UTD2052CL DSO, however the problem is the CD I got only includes the PC software which is able to monitor/control the oscilloscope. There aren't any software in the CD that is capable of viewing.savor.recfiles. I have been searching for several days but no luck finding. Does anybody have those apps capable of opening.savand.rec

author: acemc
author_rank: Contributor
timestamp: January 12, 2019, 03:34:18 pm
content: Hi SSCattered, I recently bought a used UNI_T 2102C.Could you possibly assist me with the drivers for your UNI-T.I have the original disk, but it doesn't have any drivers on it!! It only has the software.When I try install the drivers using the disk, I get asked for a UNI-T.sys file which isn't on the disk.Sadly I cant even connect mine to the pc at the moment.If you can help with the drivers I would really be greatful.

author: hugo
author_rank: Regular Contributor
timestamp: January 12, 2019, 06:40:59 pm
content: Why don't you take a look here first:https://www.element14.com/community/servlet/JiveServlet/download/29683-2-106406/cy68013_usb_driver%20for%20manually%20installation.ziphttps://www.element14.com/community/docs/DOC-29683/l/usb-driver-for-window-7-for-tenma-oscilloscopesHave you checked uni-t home page:http://www.uni-trend.com/index.html?
Robot delivery....dogs - Page 1
Forum section: electronics / general

author: Bud
author_rank: Super Contributor
timestamp: January 09, 2019, 11:34:59 pm
content: A pack of robot dogs is stuffed inside a self driving vehicle, gets delivered to the destination and unleashed. Amazon is probably pulling their hair out ,how come they could not think of such great ideahttps://twitter.com/ContiSafety/status/1082573906836406273

author: BrianHG
author_rank: Super Contributor
timestamp: January 09, 2019, 11:58:52 pm
content: looks like a fake 3d rendering...Wait a minute, that is exactly what it is...

author: Mr. Scram
author_rank: Super Contributor
timestamp: January 10, 2019, 12:02:13 am
content: Quote from: BrianHG on January 09, 2019, 11:58:52 pmMany if not most product "photos" you see are renders nowadays.

author: ajb
author_rank: Super Contributor
timestamp: January 10, 2019, 12:53:31 am
content: One of those investor bait ideas where some wide eye-ed dreamer says "what if we take this really cool nascent technology and combine it with this other cool idea that people are talking about, and do something really sci-fi!" With little regard for the fact that one technology is only just starting to be accepted as a thing that really exists right now, and the other has been plateauted for the past several years despite billions and billions of dollars being thrown at the problem. Suffice to say, it's not exactly a matter of just buying a value-pack of robot dogs from the local microcenter and picking up a new autonomous ford transit from the local dealer and stickin' 'em together with some python and a couple of arduinos.Those kinds of ideas are like a dime a dozen.

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: January 10, 2019, 01:10:04 am
content: This kind of crap is done mainly fo shareholders and analysts to create the impression of being on the bleeding edge of technology.

author: Brumby
author_rank: Unknown
timestamp: January 10, 2019, 03:05:32 am
content: I've seen the bleeding edge of technology - particularly in IT.The things they don't go into detail about is the amount of blood often involved, plus all the corpses that litter the ground - and of the several heads that keep rolling by.

author: LapTop006
author_rank: Unknown
timestamp: January 12, 2019, 12:23:51 pm
content: Quote from: Bud on January 09, 2019, 11:34:59 pmIsn't that very similar to some of the story elements in Neal Stephenson's Snow Crash?
Which Metcal tip for batter case solder lugs ? - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: January 11, 2019, 04:59:43 pm
content: Hi All,I using aSTTC-146 Metcaltip. Now the other day I was soldering a battery lug, and within 1-2 seconds the lug got wrapped inside the battery case.One like this:http://www.batteryholders.com/part.php?pn=BCAAL&original=AA&override=AAGuessing to much power. I hardly touched itSo, either my soldering skills suck (probably), but maybe its the wrong tip? Any tips?Thanks!

author: Gyro
author_rank: Super Contributor
timestamp: January 11, 2019, 08:22:56 pm
content: The plastic in those cheap battery holders melts if just look at them in the wrong way. The secret is speed - make a decent mechanical connection between the wire and the lug, tin the soldering iron bit well and go in really fast with some fresh solder. Aim to make the joint in less than a second with minimum mechanical pressure.If possible, get holders with wires pre-crimped.P.S. As far as I can see, there is no 'correct' bit - the plastic just melts at a lower temperature than the solder.

author: onesixright
author_rank: Frequent Contributor
timestamp: January 11, 2019, 08:53:48 pm
content: Hi Gyro,I thought there was to much power in the tip. I will give it a try.Thanks!Sent from my X using Tapatalk

author: KJDS
author_rank: Super Contributor
timestamp: January 11, 2019, 10:02:59 pm
content: My preferred metcal tip, and as has already been stated, speed is the key. Put some flux on the joint too.https://eu.mouser.com/ProductDetail/Metcal/STTC-1173P?qs=kSX8PZDGYsscR4QSugzdQw==
Anyone here decapsulate? - Page 1
Forum section: electronics / general

author: zingzang
author_rank: Contributor
timestamp: January 10, 2019, 11:40:09 pm
content: Just curious if anyone has the ability to decapsulate IC's or have done it successfully.I have a few old LED's and I'd like to sacrifice a few to get a good look at their insides (they are in frosty red epoxy.)Can LED epoxy be chemically removed like IC epoxies?

author: JacobPilsen
author_rank: Regular Contributor
timestamp: January 11, 2019, 08:45:58 pm
content: Much easier.The LED are often encapsulated in PMMA.And PMMA can be easily dissolved using acetone.And BTW: Yes, I'm trying to decapsulate (dead) IC mechanically.Just with a file (rasper).Last microns can be scrub away with something much softer (wood, plastic, fingernail).
Molex KK-254 series connector quality gone to poo. - Page 1
Forum section: electronics / general

author: GK
author_rank: Super Contributor
timestamp: January 11, 2019, 09:48:44 am
content: Has anyone else noticed this? I've been using these connectors since my very first computer-aided PCB layout. They used to be made of an off-white colored plastic that was hard and durable. The pins of the PCB-mounting headers firmly anchored in the plastic. Now they are made of pure-white colored plastic that is soft and crap. The header locking tabs which hold the plugs in place now routinely deliver enough holding force so that when you try to pull the plug out, the freaking crap soft plastic header body slips right off of its PCB-mounted pins! - like a chunk of steak on a shish kebab skewer.Jaycar down here stock a cheapo knock-off of the KK series, both 2.54 and 4mm pitch, which I've been using as an alternative. The knock-offs are now better quality, IMO, than the original item:https://www.jaycar.com.au/6-pin-0-1-straight-locking-header-2-54-pitch-single/p/HM3416The only problem is that Jaycar, being Jaycar, will neither give you the original part number or tell you who the manufacturer is and they ream you with a profit premium not desirable for bulk purchasing.Does anyone know who the manufacturer of these connectors is?

author: nali
author_rank: Frequent Contributor
timestamp: January 11, 2019, 10:33:32 am
content: I don't think they're the same as the Jaycar offering but I've seen these:https://www.cvilux.com/product?id=169&level=pitch&text=2.54mm&product_id=723Defiantly made of harder stuff than the soft cheese used by Molex...

author: tom66
author_rank: Super Contributor
timestamp: January 11, 2019, 10:38:06 am
content: You could try asking for a datasheet and sometimes companies like this will give it to you, which will have the original part number on it or details of the part that help you find it.Finding connectors has always been an utter pain for me.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: January 11, 2019, 10:39:41 am
content: Molex KK's have always been pretty poor as they only contact on one side. JST XH is a much nicer and cheaper connector

author: mvs
author_rank: Frequent Contributor
timestamp: January 11, 2019, 11:41:01 am
content: Quote from: GK on January 11, 2019, 09:48:44 amThere are many manufacturers of KF2510 series. I doubt that Jaycar has only single source.http://www.wingelectronic.com/wordpress/wp-content/uploads/2014/05/Landwin-2.54-mm-Pitch-Series.pdf
First post, first question (buying components + taobao) - Page 1
Forum section: electronics / general

author: Minedraco
author_rank: Newbie
timestamp: January 10, 2019, 06:12:49 pm
content: Hello everyone,Im new on this forum so it´s time to introduce my self:My name is Guillermo I´m Spanish and right now I´m studying Development of multiplatform applications I study electronic myself.i have two questions that in my opinion are dumb but i think that are worth it for me and for other people.i´m looking for a supplier that can send to Spain (probably most of them can) but i see that they all require a big buy (+50€) to get free shipping, so my question is there exist a supplier like mouser or Digikey with free shipping or with lower ammount of minimum buy for free shipping.my other question is about taobao i cheked the webpage and i see a really good prices but when i tried to buy a pcb for prototyping (the one with a lot of holes, i dont know the name exactly) the seller said to me that he cant ship overseas, so i checked other seller and the price was around 200/300 yuan, so my question is, there is a method to get cheaper shipping myself i mean with no forwarder and these stuff.thank you all for your help.

author: Minedraco
author_rank: Newbie
timestamp: January 10, 2019, 06:32:04 pm
content: Wow, thank you so much for the pcb manufacturers recommendations, i see that all have offers (best one is jlpcb).I checked arrow and they ship free with no minimum worldwide, i found my supplier haha.thank you so much again for your help.

author: soldar
author_rank: Super Contributor
timestamp: January 10, 2019, 09:51:25 pm
content: I buy a lot of junk and parts on eBay.com all the time for prices so low that I don't know how it even covers postage from China. Other Chinese merchants areTaobao.comBanggood.comLightInTheBox.comAliExpress.comTmall.comNewFrog.com

author: xaxaxa
author_rank: Regular Contributor
timestamp: January 11, 2019, 03:18:46 am
content: Quote from: blueskull on January 10, 2019, 06:18:35 pmdisagree with that one; i've used probably hundreds of different parts from taobao and the only fake i've ever seen was a 78L05 voltage regulator that didn't meet input voltage specs. Recycled parts maybe (there are listings that specifically say recycled parts and show solder on the pads), but I think the vast majority are just new old stock (i've gotten AD9200s with date codes going back to 1997!). Some ADI and xilinx parts can be 1/10th the digikey price (i got some ad9363s for $10 and tested that they meet the most important specs).If you are outside china though I don't recommend buying from taobao (none of the sellers will ship overseas and dealing with an agent isn't worth it), but often what you want is available from aliexpress.
Motherboard design: What's the design process like? - Page 1
Forum section: electronics / general

author: TimNJ
author_rank: Super Contributor
timestamp: January 11, 2019, 12:18:27 am
content: Hi all,In lieu of the linked thread below, regarding Xilinx threatening to sue Robert Feranec for publishing content with Xilinx logos, I decided to watch some of Robert's videos on motherboard design...https://www.eevblog.com/forum/chat/xilinx-sends-lawyers-after-online-educators/I've always assumed motherboards were ridiculously complicated, but it's hard to imagine exactly what that means until you take a look at an actual schematic and layout. I am stunned.How long do these things take to lay-out? How many people? And maybe my biggest question, how the heck do you test and debug a thing of such insane complexity? What if one of your 500 diff pairs is bad?Any experience with boards like these?Thanks!
Is Cypress a reliable company? - Page 1
Forum section: electronics / general

author: mcmayer
author_rank: Newbie
timestamp: January 09, 2019, 10:50:21 am
content: I used to have a generally good opinion about Cypress (http://www.cypress.com) - their workshops are good and some of their products, e.g. the PSoCs are neat - I think.But after actually seriously employing one of their products I'm beginning to change my mind.I wanted to use the CY7C65211 USB-Serial bridge as a replacement for the FTDI part. It's cheaper and it has less "FTDIgate". CY7C65211/15s also have I2C and SPI support. Very nice, that's what I want... Until you find out the the firmware of these chips seems to be broken, at least what regards the I2C and some GPIO functionality:Erroneous bytes are being read (https://community.cypress.com/thread/36996)Long pauses between reads and writes (probably a USB software issue) (https://community.cypress.com/message/183563)TXLED and RXLED indicator have no relation to the actual USB transfer (https://community.cypress.com/message/183589)The USB connection hangs sometimes (https://community.cypress.com/message/162098)Cypresspublishes no errata although clearly they should have (https://community.cypress.com/thread/43237Clearly they have issues. My hunch is that the CY7C65211 is quite faulty, hence the quick introduction of the CY7C65211A. (The CY7C65211A has RS485 support and is otherwise identical, apparently.)After reading all the posts in the Cypress forum it becomes sufficiently clear, without Cypress ever clearly admitting it or giving a word of advice to others.What bugs me is not so much the faulty chip - sh** happens! - but how it's dealt with. Cypress' communication is just catastrophically bad (yes, I call it catastrophic).Tricky issues are discussed behind closed-doors, not in their forum, or elsewhere, and they selectively provide "firmware fixes". The errata are not out, yet, despite people asking for it.This company is really ticking me off right now. I'm putting a new rule into my checklist: No errata - no business.Does anyone else have experience with them? I'm inclined to avoid Cypress like the plague (well, that's a bit harsh, maybe).Can it be considered normal that I have to scour through the forums and read between the lines to discover the issues?

author: coppercone2
author_rank: Super Contributor
timestamp: January 09, 2019, 11:02:47 am
content: what does your setup and interconnects look like? i..e proper full shield USB cable that properly terminates the cable shield to the connector without just a bond wire?

author: mcmayer
author_rank: Newbie
timestamp: January 10, 2019, 01:32:54 pm
content: I use one of their dev kits so the USB connection is quite ok, I'd say.

author: coppercone2
author_rank: Super Contributor
timestamp: January 10, 2019, 01:49:20 pm
content: I am just saying because I recently got 'nice' USB cable which advertised that it had a 'full shield connection' (drawing like a coaxial), if they are advertising that it might be the case that the standard cables potentially have very poor shield bonding.
100 Years of Bauhaus festival January 16 to 24 - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: January 16, 2019, 09:14:19 am
content: https://www.bbc.com/news/in-pictures-46863364

author: Johnny10
author_rank: Frequent Contributor
timestamp: January 16, 2019, 12:37:40 pm
content: Long Live Bauhaus!

author: newbrain
author_rank: Super Contributor
timestamp: January 16, 2019, 11:30:57 pm
content: 100 years of Bauhaus already?Damn, I thought myself younger...

author: German_EE
author_rank: Super Contributor
timestamp: January 17, 2019, 06:32:38 pm
content: I've always been a fan of that particular architectural style. Clean and functional.
Looking for Baofeng Cable Driver - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 09, 2019, 01:04:20 pm
content: HiI have a calble who look like this:the driver cd is somewhere... Does anyone know what kind of Chipset the use?Does anyone have an link to the driver?ThanksEDIT: sry... I found the driver here:https://www.maas-elektronik.com/MAAS-PT-130-D-PMR-446-Digital-Analog-Funkgeraet.2.htmlI got the Radio from a chinese company maybe the baofeng cable work....

author: stj
author_rank: Super Contributor
timestamp: January 09, 2019, 03:52:45 pm
content: if it still wont work, see what VID/PID the usb shows, and post it here.original cables where FTDI afaik, but the clones are mostly ch341 based.

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 09, 2019, 04:28:50 pm
content: I still tried to connect it with the Software.

author: @rt
author_rank: Super Contributor
timestamp: January 10, 2019, 01:54:24 am
content: It’s a Prolific USB to Serial converter. I think these have issues with Win 10, but not sure.Anyways look for a Prolific driver. I broke apart the cable that came with the Baofeng UV5A to salvage the chip.

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 10, 2019, 11:05:56 am
content: I use W7. The driver seem to work but not the software.I did start a new tread in the rf post area.
That's the spirit! - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: January 09, 2019, 04:03:37 pm
content: I know it's long, but you can let it play in the background, no need to watch, it's a podcast.Beautiful tale, great story-teller, don't know how to describe this, just listen for yourself.

author: ajb
author_rank: Super Contributor
timestamp: January 09, 2019, 06:59:41 pm
content: I haven't watched/listened to this one yet, but all of the Numberphile videos with Cliff Stoll are just an absolute joy. The enthusiasm and energy he has for everything, but especially topology would warm anyone's heart. He literally jumps for joy at explaining his favorite mathematical concepts!
Is https://www.i-components.fi reliable? - Page 1
Forum section: electronics / general

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: January 09, 2019, 06:28:19 pm
content: Hi,I came across this websitehttps://www.i-components.fi, which has very good prices, do you have any info about them? has anybody purchased parts from them? are they reliable?
Becoming an Arrow hater - Page 1
Forum section: electronics / general

author: Feral
author_rank: Contributor
timestamp: January 09, 2019, 05:27:13 pm
content: Up until 3 weeks ago, I had never ordered from Arrow (that I can remember). Now I have placed 6 orders in the last 3 weeks.Orders 2, 3, 4, and 5 arrived mostly as expected. Order 1 hadn't arrived, so I checked its status. It was cancelled! No email notification or anything, just cancelled.So, I ordered some of the items from that order from Digi-Key, and placed order 6 with Arrow for the remainder. It was supposed to arrive yesterday but I hadn't received a shipping notice. I chatted with support this morning. They don't know why the order never shipped, they think it was an issue with PayPal.TL;DR: 33% of my Arrow orders have failed.
FRS GMRS in Jordan? - Page 1
Forum section: electronics / general

author: Richard Crowley
author_rank: Super Contributor
timestamp: January 09, 2019, 03:03:03 am
content: I am trying to find whether FRS (Family Radio Service) @ 462MHz or GMRS (General Mobile Radio Service) @ 467MHz are legal for temporary visitor use in Jordan. I am going to Amman in a few weeks and I need to use some kind of communication devices for a multi-camera video production. I have several FRS radios that I use here in the US, but I don't want to get to the customs and border people at the Amman airport and have them declared illegal and/or confiscated.So far, I have not found a definitive and current source of information about what is legal in Jordan. Anybody here with useful information and or suggestions where to find it? I am working on a job for a non-profit and would like to be economical with their budget. Else I could probably just rent some radios locally.Thanks.

author: LaserSteve
author_rank: Super Contributor
timestamp: January 09, 2019, 03:50:20 am
content: Their 2007 table of allocations shows a limit of 10 milliwatts for Walkie Talkies in the LPD bands. That pretty much rules out GMRS/FRS. They want ETSI and Kingdom type cerification for nearly everything.They are in a different ITU region then the US, thus much of their UHf allocation table will be dramatically different and wlll be similar to Europe.Steve

author: LaserSteve
author_rank: Super Contributor
timestamp: January 09, 2019, 04:03:38 am
content: please see attached.

author: amyk
author_rank: Super Contributor
timestamp: January 09, 2019, 12:20:11 pm
content: Mobile phones don't meet the requirements?

author: cdev
author_rank: Super Contributor
timestamp: January 09, 2019, 02:21:33 pm
content: Now that's what you callregulatory capture.

author: stj
author_rank: Super Contributor
timestamp: January 09, 2019, 03:49:41 pm
content: FRS/GMRS is pretty much u.s. only - and given the fact that they overlap with different power levels, it should be scrapped anyway.the u.s. should just adopt PMR446 / dPMR446 like Europe and a lot of other country's.flame me now, i dont care!

author: Richard Crowley
author_rank: Super Contributor
timestamp: January 09, 2019, 04:57:05 pm
content: Quote from: amyk on January 09, 2019, 12:20:11 pmThe application is communication between the video director and the camera operators.The users (the director and the camera operators) have their hands full doing their jobs.They need immediate, two-way, hands-free communication via headset.Its not even clear what kind of mobile phone service is available.And whether one can buy SIM cards for the local carrier.Or whether the camera operators have phones that use SIM cards.And the latency in mobile phone service is sometimes too long for real-time operation.

author: Richard Crowley
author_rank: Super Contributor
timestamp: January 09, 2019, 05:03:06 pm
content: Quote from: stj on January 09, 2019, 03:49:41 pmAs you are no doubt aware, the frequency spectrum allocation is different and it would be impractical to move millions of users around like that.
need a Domain only with Number -> is there a "bad" number? - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 07, 2019, 08:37:16 pm
content: HiSure 666 is still taken now I need some different Numbers.Here 3 Digit Domains are fresh on the Marked and I need a Domain who is new cute and innocent and is not relayed to anything like a "word" would be.Are there any bad Numbers who I should not take? I know in Asia people get insane with some Numbers.THX!

author: VK3DRB
author_rank: Super Contributor
timestamp: January 08, 2019, 12:27:29 pm
content: Most Chinese are scared of number 4, so don't choose 444, because they think it relates to death. They like 8 because they think it relates to making money. In fact, in my area, homes that are number 4 are worth roughly $100K less than those with number 8. Of course there is not one bit of science to any of it, just a mixture of stupidity, superstition and. Some westerners with minimal education are superstitious over the number 13. Again no science to it at all. So if you want to appease the masses and get more sales, go for 888.Papyrus 115 (which is the oldest known preserved manuscript of the book of Revelation), as well as other ancient sources like Codex Ephraemi Rescriptus, give the number of the beast as 616, not 666.

author: SeanB
author_rank: Super Contributor
timestamp: January 08, 2019, 02:21:22 pm
content: You will not get 786.

author: Kleinstein
author_rank: Super Contributor
timestamp: January 08, 2019, 05:04:00 pm
content: There are a few number already commonly associated with a certain use, like 007 or 911 (especially in the US).

author: Ampera
author_rank: Super Contributor
timestamp: January 08, 2019, 05:04:33 pm
content: I find superstitions to be more of a joke than anything real.I'll still notice number 13s, 666s, my two black cats who often cross my path, broken mirrors, spilled salt, etc. etc. I don't think they are anything bad, but interesting to note and joke about, knock on wood.

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 08, 2019, 05:40:28 pm
content: Maybe some from an Asian Country like China can give some hints?The should not sound like "death, death, death".

author: VK3DRB
author_rank: Super Contributor
timestamp: January 09, 2019, 11:07:18 am
content: Quote from: Ampera on January 08, 2019, 05:04:33 pmThe superstitions aren't the joke, but those who believe them are. People have a right to be stupid, as long as they don't affect anyone else. The problem is when the stupid become dangerous with their beliefs and practices.By the way I also own a black cat.

author: HighVoltage
author_rank: Super Contributor
timestamp: January 09, 2019, 11:16:26 am
content: If you want something powerful that works in the western and eastern world, choose something with 3, 6, and 9

author: Nusa
author_rank: Super Contributor
timestamp: January 09, 2019, 11:24:06 am
content: 007 is well known. Not a good flight number for a plane, however.
High Pass Filter IC? - Page 1
Forum section: electronics / general

author: JohnnyP
author_rank: Regular Contributor
timestamp: January 09, 2019, 12:56:43 am
content: Why are there high order integrated low pass filters, but no high pass filters?

author: oPossum
author_rank: Super Contributor
timestamp: January 09, 2019, 03:21:51 am
content: anti aliasing
Eminence Speaker Factory Tour - Page 1
Forum section: electronics / general

author: In Vacuo Veritas
author_rank: Frequent Contributor
timestamp: January 08, 2019, 05:22:30 pm
content: Good to see Tonya Harding found a job.

author: Homer J Simpson
author_rank: Super Contributor
timestamp: January 08, 2019, 05:45:35 pm
content: Quote from: In Vacuo Veritas on January 08, 2019, 05:22:30 pmNow how many people do think got that?
Moderator, pls delete if too risque - Page 1
Forum section: electronics / general

author: najrao
author_rank: Regular Contributor
timestamp: January 08, 2019, 09:28:34 am
content: A famous Japanese manufacturer put out a DMM with both a usual digital display and an a pointer-on-scale analog instrument, to appeal to older customers. Surprisingly popular, the makers registered the trade mark: "ana-digi".A WHL cheapskate copied the design to offer at half the price. Worried of legal action on trade mark infringement, he decided to make it deceptively different --- by adding the next letter to each of the three lettered abbreviations of the original mark.

author: Ian.M
author_rank: Super Contributor
timestamp: January 08, 2019, 09:32:21 am
content: Googling"ana-digi" meterdoesn't find anything relevent. Photos or it didn't happen

author: PA0PBZ
author_rank: Super Contributor
timestamp: January 08, 2019, 11:29:24 am
content: Try to get the joke?

author: Ian.M
author_rank: Super Contributor
timestamp: January 08, 2019, 12:33:07 pm
content: All we are asking is for the O.P. to pull his finger out of his a**e and post a picture of the DMM.Hint for the humour impaired: Photoshop isn't *that* hard to use and a good joke needs some creative effort!

author: beanflying
author_rank: Super Contributor
timestamp: January 08, 2019, 12:43:53 pm
content: Nope nothing to see here clearly the wrong meter

author: Ian.M
author_rank: Super Contributor
timestamp: January 08, 2019, 12:59:41 pm
content: Well, that's half way there, but even though its got nicely rounded corners, I doubt it would be popular with the 'Chatham Pocket' crowd. IMHO it needs an IP69K rating so it can be steam cleaned!

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 08, 2019, 02:22:35 pm
content: Hasn't it been demonstrated that the old school analog meter isn't actually that good for visualizing fast changes and that a bargraph is superior?

author: najrao
author_rank: Regular Contributor
timestamp: January 08, 2019, 02:29:49 pm
content: Whoever expected that this was a real story? Either you get it, or you don't. Some of you did!

author: Zero999
author_rank: Super Contributor
timestamp: January 08, 2019, 04:04:01 pm
content: I sounds like a very shitty meter. Please don't post pictures of it being used.

author: Cyberdragon
author_rank: Super Contributor
timestamp: January 08, 2019, 05:17:54 pm
content: I think the Vion would be much better suited for this application.
Boldport, an electronics kit subscription, stops subscription service - Page 1
Forum section: electronics / general

author: Ranayna
author_rank: Super Contributor
timestamp: January 08, 2019, 09:48:55 am
content: Hi,has anyone even heard about them here? I wish I had known, I would have subscribed instantly...To bad they did not sent some samples into the Mailbag.https://www.boldport.com/blog/2018/10/18/boldport-club-is-changingI love the look of their kits, to bad that most are out of stock.

author: Gromitt
author_rank: Regular Contributor
timestamp: January 08, 2019, 12:27:00 pm
content: Boldport is not closing down, it´s the monthly subscription that ends.

author: prof
author_rank: Contributor
timestamp: January 08, 2019, 12:35:29 pm
content: Hi Ranayna,I don't think the thread title is quite accurate: The model will change a bit from a "every month a new kit" subscription model to irregular projects open to anyone; Boldport is not closing down.While this is a significant change, especially to members like me, it both has its pros and cons. One of the pros is that it is now much more accessible to people for whom the previous subscription fee was a serious invest especially because it was not exactly clear what the next project would be.At the moment it is not quite clear what the future will bring us as Saar Drimer likes the element of surprise and doesn't want to show what is up his sleeve. But nevertheless there's a bit of community behind the Boldport Club and it is still not too late to come and join the ride.

author: Ranayna
author_rank: Super Contributor
timestamp: January 08, 2019, 01:32:21 pm
content: Sorry, yes, my title was not accurate. I am aware that they are "just" stopping the subscriptions. I thought along the lines of the article I originally read about them. I have specified the title.Do you know if currently out of stock kits will become available again? Currently the store says that when they are sold out they are gone forever. Some of the kits they have look very nice.

author: prof
author_rank: Contributor
timestamp: January 08, 2019, 07:22:46 pm
content: When they're gone, they're gone. Though Saar found some leftover PCBs and put them in the store if you're interested.
Thursday Circuits, Gremlins, Repairs - Page 1
Forum section: electronics / general

author: spec
author_rank: Frequent Contributor
timestamp: January 01, 2019, 04:43:54 pm
content: Thursday circuits either only work on Thursdays, of fail on Thursdays, during customer demonstrations.Gremlins are the pesky little bastards the creep out of the wood work and bite you in the arse, especially with new designs.Repairs are repairs, but they are often anything but straight forward, especially if you have to deal with the owner too.I have many stories in this area- but what are yours(some stories at replies #34 and #37 here:https://www.eevblog.com/forum/projects/circuit-for-mosfets-in-parallel-for-extra-current-capacity/msg2082850/#msg2082850)

author: LapTop006
author_rank: Unknown
timestamp: January 02, 2019, 11:45:19 am
content: My favourite bug like this was theOpenOffice doesn't print on Tuesday'sclassic.The TL;DR:Quote

author: spec
author_rank: Frequent Contributor
timestamp: January 08, 2019, 11:57:12 am
content: In the old days, I was a sucker for helping people out when their, TVs, radios, HiFis, cars, etc needed fixing.One day a neighbor called in an anxious state. He said that he had been moving his TV and had dropped it. He had a large family and was not very well off, so I asked him to bring the set around, which he did. You have never seen such a mess. The veneered ply cabinet was practically split in half as was the main PCB. I said that there was not much I could do with the set because of the extensive damage, but he seemed so distraught at this news that in the end I relented and offered to have a look at it.The cabinet glued together really well with PVA, so much so, that after a light polish, you could hardly see where the crack had been, unless you knew where to look. But the electonics were another matter. It took me a week of evenings to Araldite the PCB back together and wire link all the broken traces. Also, some components were damaged and needed to be replaced. Luckily the tube was still intact.After another three evenings, fault finding, the set finally sprung into life, and after a quick set-up and soak test it was ready to go back to its owner.On the following Sunday, I took the set over to his house. He was overjoyed that the set was working again and said, "Thanks a lot, that will just tie us over nicely until our new set arrives next week."
Forum functionality - Page 1
Forum section: electronics / general

author: gkmaia
author_rank: Frequent Contributor
timestamp: January 08, 2019, 06:51:47 am
content: I am new to the forum. Is there a function on "my profile" that shows all the threads I created? I am trying to find it but cannot.

author: BravoV
author_rank: Super Contributor
timestamp: January 08, 2019, 06:59:45 am
content: https://www.eevblog.com/forum/profile/?area=showposts;sa=topics;u=385990

author: Ian.M
author_rank: Super Contributor
timestamp: January 08, 2019, 07:14:03 am
content: Note: BravoV's link is personalised for gkmaia. If you want someone else's topics, in their Profile page, goto [Profile Info] => 'Show Posts...' =>'Topics'
Raspberry Pi - how to get 500k YouTube vies in 20 days  - Page 1
Forum section: electronics / general

author: mairo
author_rank: Unknown
timestamp: January 07, 2019, 08:37:21 pm
content: OK, I just watched this up till the 11 minute and ... the removal of the USB connectors at the start was ... okey not everybody has a soldering iron so why not cut them, but then few minutes later the instructions do require a soldering(should of just tough people how to desolder them). I can sort of get why he is going that way (will probably never recommend someone doing it tho); however it feels so wrong at the same time (having said that I have cut connectors similar way many times before, but I think I knew abit better what I was doing and the potential issues). Then I just fall of the chair when he started 'cutting of the power lines on the PCB' at ~11min.. did not watched the whole thing.

author: tsman
author_rank: Frequent Contributor
timestamp: January 07, 2019, 08:56:15 pm
content: Quote from: mairo on January 07, 2019, 08:37:21 pmIf you've only got a basic soldering iron then trying to remove that socket in one go isn't going to be easy. For the intended audience, breaking apart the USB socket and then removing each pin individually is probably the safest and easiest option.
Tour of TVW Channel 7 in Perth, Australia From the 1980s - Page 1
Forum section: electronics / general

author: scottgfx
author_rank: Newbie
timestamp: January 06, 2019, 03:15:39 am
content: Thought this might be of interest to Dave or anyone who enjoyed his tour of a TV transmitter site or his teardown of that NEC Exciter.https://youtu.be/nB0g7A7c6Ro

author: vk6zgo
author_rank: Super Contributor
timestamp: January 06, 2019, 05:30:02 am
content: I worked at TVW7 from 1988 to 1999, so I was watching & exclaiming "I know this person & that person".Some things had changed between 1981 & '88, like mainly helical scan Sony VTRs used, much less Telecine,new logo, big fat Earth Station, so a lot of progranme material came "off the bird", but a lot was pretty much the same.The Transmitter site still had the two Siemens transmitters, but also had a new NEC.I was the Transmitter Super Tech ( mostly supervising myself), but I also got involved in OBs & other stuff.The TVW7 Studio is now gone, replaced with a housing development called "Seven Acres".The new Studio doesn't do any local productions, much, OBs are "outsourced", but at least, TVW7 maintains a presence in the community, unlike some of the other stations.PS:- Here's a similar video from 1990

author: PTR_1275
author_rank: Frequent Contributor
timestamp: January 06, 2019, 06:59:50 am
content: Those videos are a great behind the scenes.How much work needed to be done on equipment to keep the station on the air? I’d imagine the equipment had a very long life span, so was it more preventative maintenance or was there a lot of repair after failure too?The channel 9 tower up at Carmel was demolished a few months back, any idea why or where they have moved transmission to?

author: scottgfx
author_rank: Newbie
timestamp: January 07, 2019, 06:48:30 am
content: That's very cool. I started in local TV in the states in 1988 when I got out of high school. I had gotten that video link from someone on the "Quadlist", a mailing list of people who either formerly or currently work with the old "Quadruplex" 2" videotape machines. Don't know if you had the chance to see those or work with them. Perhaps Dave needs one of those! I think he has the space for one now.Here's a link to the mailing list:https://groups.io/g/QuadVideotapeGroup/message/454Thanks for the reply!-Scott

author: boB
author_rank: Frequent Contributor
timestamp: January 07, 2019, 07:19:05 am
content: Great story !When I was learning the TV news ropes from my dad in early 1970s, it was all 16mm film.What fun !
Embedded more seriously - Page 1
Forum section: electronics / general

author: Inverted18650
author_rank: Frequent Contributor
timestamp: January 07, 2019, 03:38:59 am
content: This year, I resolved to commit real time and resources to programming embedded micro controllers. This, after a year or so of playing with the ATMega, and even more recently, the Blue Pill (STM32F), on the Arduino IDE. I found this course (playlist- if you will) on YouTube:I watched the complete series before deciding to watch it again and play along. While most of the explanations of the "lower level" inter-workings still have to settle in, I feel the project is having a very positive effect on how I view C/ Cpp. I feel I am one step closer (still very far away) to seeing the world as Neo did at the end of the 'Matrix.'
Merry Chritmas - Page 1
Forum section: electronics / general

author: IconicPCB
author_rank: Super Contributor
timestamp: January 06, 2019, 03:21:26 pm
content: To all of You out there observing Julian ( old ) calendarMerry Christmas Christ is born.

author: Richard Crowley
author_rank: Super Contributor
timestamp: January 06, 2019, 03:41:13 pm
content: Hear, Hear. We just celebrated Twelfth-Night yesterday.And Happy New year in advance (05-Feb) to our Chinese friends.Remember to get your orders in early.

author: Benta
author_rank: Super Contributor
timestamp: January 06, 2019, 04:16:02 pm
content: Chritmas? Who's Chrit?
Schneider Industrial PLC TSX Compact - Page 1
Forum section: electronics / general

author: maverick4400
author_rank: Newbie
timestamp: January 10, 2019, 10:40:21 am
content: Hello everyone,I have a Schneider PLC TSX Compact PC-E984-258 and want to test its functionally but have difficulty to find where to start.Does anybody have experience with them? I think this model also known as Modicon 120.Thank youUmut
Drone builder - Page 1
Forum section: electronics / general

author: Mckinney161107
author_rank: Newbie
timestamp: January 09, 2019, 07:48:15 pm
content: Hey everyone, I am trying to build a Drone. What materials and what outlets are the best to find materials to make this drone. Also whats the best place to find out how to build a drone.

author: In Vacuo Veritas
author_rank: Frequent Contributor
timestamp: January 09, 2019, 08:17:37 pm
content: https://hobbyking.com/

author: janoc
author_rank: Super Contributor
timestamp: January 09, 2019, 08:46:22 pm
content: Ever heard of Google?

author: raptor1956
author_rank: Frequent Contributor
timestamp: January 10, 2019, 04:26:26 am
content: Quote from: janoc on January 09, 2019, 08:46:22 pmGoogle ... what's that?Brian

author: rdl
author_rank: Super Contributor
timestamp: January 10, 2019, 09:10:21 am
content: Quote from: raptor1956 on January 10, 2019, 04:26:26 amSomething to be avoided as much as possible.
avrfreaks?? - Page 1
Forum section: electronics / general

author: gary2468
author_rank: Newbie
timestamp: January 04, 2019, 09:09:52 pm
content: Firefox is complaining that the site is not secure.Anyone have concerns or issues with that site?thanks in advance

author: tsman
author_rank: Frequent Contributor
timestamp: January 04, 2019, 09:17:18 pm
content: Looks like a misconfiguration by the hosting provider. The SSL certificate is for Acquia who host avrfreaks.net but they're using the wrong certificate. It should have avrfreaks.net in the Subject Alternate Names but this certificate doesn't for some reason.

author: Fred27
author_rank: Unknown
timestamp: January 04, 2019, 09:18:06 pm
content: It looks like the SSL certificate is not for the right domain. That's not great, but unless you're entering credit card details I wouldn't worry about it.

author: Kilrah
author_rank: Unknown
timestamp: January 04, 2019, 10:48:14 pm
content: Or credentials that are reused on other sites.

author: Mr. Scram
author_rank: Super Contributor
timestamp: January 04, 2019, 10:53:11 pm
content: Quote from: Kilrah on January 04, 2019, 10:48:14 pmLuckily nobody is doing that. Right?

author: Kilrah
author_rank: Unknown
timestamp: January 04, 2019, 10:59:47 pm
content: People are people...
Happy Birthday Gordon Moore - age 90 - Page 1
Forum section: electronics / general

author: Richard Crowley
author_rank: Super Contributor
timestamp: January 03, 2019, 11:32:13 pm
content: Dr. Moore was born on 03-Jan-1929. After leaving Shockley Labs with the "traitorous eight" and forming Fairchild Semiconductor, he and Robert Noyce left Fairchild and founded NM Electronics. (Later named "Intel").In the 35th anniversary edition of Electronics magazine (19-Apr-1965) he was asked to write an article that was named "Cramming more components onto integrated circuits" It contained what is now called "Moore's Law"QuoteIntel has published a "commemorative edition" of the long-defunct magazine "Electronics" including the article...https://issuu.com/zenogroupcal/docs/intel_electronics_magazine_final/20

author: German_EE
author_rank: Super Contributor
timestamp: January 04, 2019, 04:59:23 pm
content: I think that Moores Law is just about holding, although the GHz race has now slowed to a crawl. Elsewhere on Youtube I watched a video today of someone doing a server rollout. Each machine had 2 x 20 core CPUs and was filled with 64Gb RAM sticks, power that was unthinkable in April 1965.So, thank you Gordon, and I hope that you had cake

author: Tomorokoshi
author_rank: Super Contributor
timestamp: January 04, 2019, 05:56:34 pm
content: Quote from: German_EE on January 04, 2019, 04:59:23 pmGoing by Moore's Law since that article, his cake should have approximately pi*10^17 candles!