hybridfree/eevblog-posts huggingface dataset:
Fake Transistors (or Transistor in a Transistor) - Page 1
Forum section: electronics / general

author: kolbep
author_rank: Frequent Contributor
timestamp: June 17, 2017, 12:28:11 pm
content: Seen on a Facebook DJ and PA Eqpt Group...

author: yada
author_rank: Frequent Contributor
timestamp: June 17, 2017, 01:07:09 pm
content: So they stuck a little half circle package into a bigger one? Does it make a difference?

author: tszaboo
author_rank: Super Contributor
timestamp: June 17, 2017, 01:09:42 pm
content: I've seen tiny die in big package, but this is certainly new. I guess counter-fitting gets more economic over time. Dirty rats.

author: yada
author_rank: Frequent Contributor
timestamp: June 17, 2017, 01:20:24 pm
content: Whats the disadvantage of this? Is the one inside of lower quality or lessor specs? Does it not transfer heat like its supposed to? Reminds me of bigclives.coms video of the plug in rodent repeler; all that was in it was a single LED, they didn't even try to put in fake circuitry.

author: Kleinstein
author_rank: Super Contributor
timestamp: June 17, 2017, 01:45:09 pm
content: The strange part with this, they have a reasonable MOSFET inside what is supposed to be a high quality power BJT. Maybe the K2518 was also a fake - with a BJT inside ?

author: ZeTeX
author_rank: Frequent Contributor
timestamp: June 17, 2017, 01:57:49 pm
content: Quote from: Kleinstein on June 17, 2017, 01:45:09 pmA transistor in a transistor in a transistor.. damn.

author: bktemp
author_rank: Super Contributor
timestamp: June 17, 2017, 02:07:39 pm
content: How many transistors can be put into each other?TO263 (D2PAK) -> TO247TO252 (DPAK) -> TO263 should probably fitSOT89 -> TO252VMT3 or SOT323 -> SOT89

author: SeanB
author_rank: Super Contributor
timestamp: June 17, 2017, 07:04:30 pm
content: Random transistor into a big package, then marked as the customer/fool requests and shipped. Bet if you looked in the others in the lot each would have a different transistor inside.
New GOES-R satellite loop showing  lightning strikes over North America  - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: June 17, 2017, 01:52:21 pm
content: From the new GOES-R still undergoing checkout.From Wikipedia;GOES-16 has several improvements over the old GOES system. Its advanced instruments and data processing provides:Three times more spectral informationFour times greater spatial resolutionFive times faster coverageReal-time mapping of total lightning activityIncreased thunderstorm and tornado warning lead timeImproved hurricane track and intensity forecastsImproved monitoring of solar x-ray fluxImproved monitoring of solar flares and coronal mass ejectionsImproved geomagnetic storm forecastinghttp://www.goes-r.gov/https://en.wikipedia.org/wiki/GOES-16
Laws of Gravity 1960 - Page 1
Forum section: electronics / general

author: yada
author_rank: Frequent Contributor
timestamp: June 17, 2017, 12:20:30 am
content: How do you think they made that circuit that draws the dots on the oscilloscope using tubes?

author: Andy Watson
author_rank: Super Contributor
timestamp: June 17, 2017, 01:34:30 am
content: I was going to suggest an analogue computer but the caption says:"The satellite and planetary orbits in this film were computed and displayed by the TX-2 computer at the M.I.T. Lincoln Laboratory."The TX-2 was one of the first "largely" transistor digital computers. Output appears to have been performed by 4-bit DACs - "display decoders".https://www.ll.mit.edu/publications/labnotes/LookingBack_19_1.pdfHere you go, make your own:http://bitsavers.trailing-edge.com/pdf/mit/tx-2/Page 43 ff, of the TX-2_Circuitry.pdf document describes the operation of the display decoders.

author: EEVblog
author_rank: Unknown
timestamp: June 17, 2017, 01:36:18 am
content: The production effort in making this was incredible!

author: xrunner
author_rank: Super Contributor
timestamp: June 17, 2017, 01:53:14 am
content: What's up with the "X" on the jackets?

author: hamdi.tn
author_rank: Frequent Contributor
timestamp: June 17, 2017, 02:05:40 am
content: man... they knew how to explain stuff back in 1960 ... this video explain more about gravity than 3 month in college

author: Brumby
author_rank: Unknown
timestamp: June 17, 2017, 02:48:10 am
content: Quote from: xrunner on June 17, 2017, 01:53:14 amPlanet "X" .... weren't you paying attention?

author: Tom45
author_rank: Frequent Contributor
timestamp: June 17, 2017, 04:32:12 am
content: Quote from: yada on June 17, 2017, 12:20:30 amLike Andy, while watching the film I was sure that it was done with an analog computer driving the scope. But the credits at the end mentioned the MIT TX-2 computer. A bit of research shows that the TX-2 is a digital computer.

author: Tom45
author_rank: Frequent Contributor
timestamp: June 17, 2017, 04:38:21 am
content: Quote from: EEVblog on June 17, 2017, 01:36:18 amI suspect that they had most of those gadgets already for their Physics lectures.And they did a great job putting it all together.Many people would have a similar reaction to your videos that bring together lots of devices that many of us not only don't have, but in many cases, we didn't know they existed before seeing them used in your videos.

author: Electro Detective
author_rank: Super Contributor
timestamp: June 17, 2017, 04:48:06 am
content: 2 minutes in.. and convinced their gunja was awesome kit back then
On 5 band resistor just change tolerance band to a non-solid color - Page 1
Forum section: electronics / general

author: lordvader88
author_rank: Frequent Contributor
timestamp: June 16, 2017, 09:23:52 pm
content: Aside from horrible blue color on 1% metal film resistors I get, and u get...Well lets all email resistor companies and those interested and ask to switch the color coding of 5 band resistors with the tolerance being a non-solid band

author: rdl
author_rank: Super Contributor
timestamp: June 16, 2017, 09:34:30 pm
content: I like the blue color, so I buy those even if I don't need 1%, but the ink they use for the bands is so poorly made that many of the colors are hard to tell apart. I rarely bother to read the coding and just use a meter to check the value.

author: tooki
author_rank: Super Contributor
timestamp: June 16, 2017, 09:52:10 pm
content: I think the idea of a dotted band is brilliant, but probably impossible to implement. My guess is that the bands are applied by rolling the resistors across some kind of ink depositor (or rolling ink rollers along the resistors). Most likely, there's no way to make an interrupted line. :/I suspect that any effort to make dotted lines would be just as expensive as just printing numerals onto the damned things, which is what I wish they'd just do on all of them, not just the super-expensive Vishays and the like.

author: lordvader88
author_rank: Frequent Contributor
timestamp: June 16, 2017, 10:02:14 pm
content: Since the industrial revolution with metals and fabrication some genius came up with a simple way to put stripes on a little resistorThey have NO EXCUSES.............off to the DEARTH STAR I return

author: Rick Law
author_rank: Super Contributor
timestamp: June 16, 2017, 10:13:04 pm
content: With the "warm white", I cannot even tell the color difference. Purple and brown look exactly the same to me. Orange and red look strangely similar... Silver verse grey? I can't tell the difference there even if my life depends on it.In the last few years, I pretty much gave up looking at the color code. I use my DMM to read it.

author: yada
author_rank: Frequent Contributor
timestamp: June 16, 2017, 10:36:53 pm
content: They would be fine to read if they were white, or even had white between the stripes. I can see the beige ones no problem as long as I have ones to compare it to. You have to calibrate your eyes to see the red/orange purple/black/brown.Colours on top of blue is just stupid. Why not just make a black back ground with transparent ink? Tried, sorry, can't, good enough.

author: Cyberdragon
author_rank: Super Contributor
timestamp: June 17, 2017, 01:47:54 am
content: White is taken by nine. Black is taken by zero. There is only one color left...PINKBright neon pink, and make red very dark. This would most certainly satisfy Bigclivedotcom.EDIT:THEY DO EXIST
Super capacitors from old tyres. - Page 1
Forum section: electronics / general

author: G7PSK
author_rank: Super Contributor
timestamp: June 16, 2017, 07:48:22 am
content: This man claims he can make super capacitors from old tyres. Interesting idea if true.https://youtu.be/1j_1V0Wg4z0

author: ed_reardon
author_rank: Regular Contributor
timestamp: June 16, 2017, 08:06:00 am
content: Interesting stuff;watch this spaceI guess?

author: HighVoltage
author_rank: Super Contributor
timestamp: June 16, 2017, 09:28:29 am
content: Very interesting indeed. May be we see tire based super capacitors, before we see graphene based caps.
Anybody tried this modded video driver  - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: June 16, 2017, 05:25:36 am
content: http://www.trixarian.net/Chell/anbody here tried it how much better is it then the intel driver thinking of installing on my old netbook but if its not going to be much better i don't wanna bother getting the netbook out
Tricky translation - Page 1
Forum section: electronics / general

author: amadill01
author_rank: Newbie
timestamp: June 15, 2017, 10:15:09 am
content: Hi guys, I need your input again regarding the correct English terminology for a French term I have encountered while translating a French patent. The French sentence reads: La présente invention concerne la détermination de la fréquence d’un signal électrique alternatif et le cas échéant la détermination de la dérivée de cette fréquence.The French term "dérivée" can be translated a number of ways in English, and I am wondering what is the more common way. My current translation for this sentence is: "The present invention relates to the determination of the frequency of an alternating electric signal and, where necessary, the determination of the derivative of this frequency." However, I have also seen "dérivée" translated as "rate of change", and given that a meaning of the English word "derivative" is "the rate of change of one quantity with respect to another", it may be that I could use either translation for the French word "dérivée". However, I would like the input of an expert first.Many thanks as always

author: sokoloff
author_rank: Super Contributor
timestamp: June 15, 2017, 11:29:05 am
content: Native English speaker and engineer here.I would use "rate of change" as that's perfectly clear to both engineering and non-engineering audiences, specifically, "...the determination of the rate of change of this frequency."Alternately, I would use "first derivative" rather than just derivative.Either of those would be equally clear to engineers, though rate of change would still be clearer to laymen.
Freight cost, Melb to Syd - anyone with experience? - Page 1
Forum section: electronics / general

author: TerraHertz
author_rank: Super Contributor
timestamp: June 14, 2017, 11:47:40 am
content: I have some things in Melbourne, to be shipped to Sydney. One is a big heavy (50Kg?) 3-phase vacuum pump, that will be mounted on a wooden base for transport.There are a lot of different freight cost comparison sites online. Has anyone used these? Any comments on how well they worked?Or does anyone know a truckie that drives Melb to Sydney and would like some cash on the side?A few years ago I had an blacksmiths anvil and swage plate shipped from a Victorian farm to my place that way, and it worked well. But the truckie was arranged by the seller.Edit to add: Due to scheduling requirements, apparently I'm going to drive down myself and pick up the stuff.But the general question about shipping still stands, only not so urgently.
Cyber firms warn of malware that could cause power outages - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: June 12, 2017, 09:52:56 pm
content: https://www.reuters.com/article/us-cyber-attack-utilities-idUSKBN1931EG

author: Jeroen3
author_rank: Super Contributor
timestamp: June 13, 2017, 09:25:01 am
content: I'm not surprised. I've read elsewhere this malware erases the infected unit. So at least it's not that bad.When you search shodan.io for abb or siemens you get many hits. Right now it lists one with firmware from2015. That's prehistorical in real years.

author: lapm
author_rank: Frequent Contributor
timestamp: June 14, 2017, 09:42:45 am
content: Thats because some idiot manager desided to save some money and use internet as communication channel to help control all that power infrastructure. What happens when idiots put stuff on internet? Unsecured access, bad configurations on devices, etc... Because since none knows they are there, they must be safe, right

author: Jeroen3
author_rank: Super Contributor
timestamp: June 14, 2017, 10:54:48 am
content: No it's more complicated. Projects like energy infrastructure take long. Little less long than a an aerospace project, but still long due to them being overseen bythe government.Say, a new high voltage switching substation is commissioned today, it will use plans drafted at least 5 years ago. This also means it used PLC's and software from 5 years ago. Because getting changes certified will take a lot of eyes and "consultants", again.This is the root cause why democratic governments are fundamentally incapable of setting up an IT infrastructure. Everything needs to first-time-right, if not, there must have been mistakes made by someone. These mistakes must be investigated, by a commision. They also see IT as a cost, and not as an investment. This means each decision needs to pass by a council or commission, who hire many consultants because they themselves lack knowledge required to fill the position. This obviously does not work.Managers care for the company, they have hired you because they don't know. It's up to you, the engineer, to make the systems safe and secure. You should refuse to build an unsafe system. The manager either agrees, or lost an engineer.
Patents on the basics of electronics - Page 1
Forum section: electronics / general

author: bristomath
author_rank: Newbie
timestamp: June 14, 2017, 03:28:19 pm
content: Hi Community! Long time lurker.We all know there are a number of dumb patents out there that never should have seen the light of day. I found a brand new one which appears to patent split rails / offset voltages with a DAC, which I'm pretty sure has been used in designs since long before 2014.https://patents.google.com/patent/US9571121B2/enAny other particular noteworthy bad patents?

author: X
author_rank: Regular Contributor
timestamp: June 14, 2017, 03:37:29 pm
content: Microsoft patented some "InstaLoad" rubbish a long time ago, and Dave did a video on it.http://www.eevblog.com/files/Microsoft%20Instaload%20Patent%20US7527893.pdfIt is really easy to short the terminals out on these things, given that each contact has a positive and negative terminal. I believe these are connected internally (positive-positive, negative-negative) and creates a potential for a short.Understandable motivation from Microsoft, but a rechargeable mouse with Li-Ion pack or a 9V battery would have worked better than this junk, both of which were available around the time of the patent.

author: rstofer
author_rank: Super Contributor
timestamp: June 14, 2017, 03:52:41 pm
content: I can't see that patent standing up against "prior art". Designers have been adding offset voltages for decades.OTOH, our patent office has become a laughing stock in recent years.

author: bristomath
author_rank: Newbie
timestamp: June 14, 2017, 04:28:48 pm
content: Quote from: rstofer on June 14, 2017, 03:52:41 pmLitigating and defending patents is pretty expensive work (if you're not already a patent attorney in East Texas) - outside of empty threats and sending a few C&D letters, what value does this buy a small company?

author: AndyC_772
author_rank: Super Contributor
timestamp: June 14, 2017, 04:41:41 pm
content: Here in the UK, there are tax incentives to encourage companies to develop new technology, patent it, and incorporate it into products. It's referred to as 'patent box', and can be well worthwhile if you're expecting to profit from technology you've invented. Other countries may have similar schemes to try and encourage investment in R&D.Also, it's often the stated mission of a small company to get itself in a position to be bought by a larger one. The goal, of course, is to increase the value of the company as far as possible, and having a patent on key technology can help achieve that goal. Even if the small company doesn't have the means to enforce it against infringers, a bigger one certainly does, and so patented technology can have greater value than the same technology without patent protection.
Style guide opinions: Space between value and units - Page 1
Forum section: electronics / general

author: Tomorokoshi
author_rank: Super Contributor
timestamp: June 13, 2017, 08:05:43 pm
content: I'm working on some technical documents, and it's bringing up the subject of consistency when writing values with units. The key is whether or not to use the space between the value and the units.For example:V = 10VI = 100mAT = 50ºCas opposed to:V = 10 VI = 100 mAT = 50 ºCI've seen both styles within the same technical document, and I admit I've used both as well. There are guides for this:http://physics.nist.gov/cuu/Units/rules.htmlhttp://physics.nist.gov/cuu/pdf/sp811.pdfSee section 7.2.One of the issues I have is that many common devices show this information without the space. I am now leaning to using the space as described in the style guide.Are there any strong arguments to not use the space?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 13, 2017, 08:37:12 pm
content: Yes, absolutely.On forums, I sometimes do either, partly out of laziness, and partly out of limitations of the medium. For technical writing, the space is indeed the correct, and better looking, way to do.Note that it needs to be a non-breaking thin space. In Unicode, this either uses a normal thin space (I don't remember if it is breaking or not), or non-breaking 'glue' zero-width-spaces to hold it together. In HTML, you might also put it in a non-breaking <span>.In \$\LaTeX\$, I use a macro which puts the expression in math mode, with the unit in \textrm{} so it looks right and doesn't break. (Math mode isn't necessary for writing out simple numbers, but makes it easier to write short expressions, and units with odd powers or ratios).Tim
Precision of acoustic 3D mapping? - Page 1
Forum section: electronics / general

author: kalel
author_rank: Frequent Contributor
timestamp: June 13, 2017, 03:42:21 pm
content: I'm just wondering about the precision/accuracy possible with sound mapping by itself.From what I understand, every possible sensor is used for 3D mapping, with more types being combined to achieve greater accuracy.However, I'm curious about how well we can scan the environment using sound. This is just a theoretical question about current technology or easily predictable near future possibilities, and I'm not asking specifically about cheap or even consumer solutions necessarily.By sound I'm of course not limiting to the audible range. I understand that ultrasonic frequencies are most commonly used.

author: strangersound
author_rank: Regular Contributor
timestamp: June 13, 2017, 03:53:28 pm
content: "down to the millimeter"re:http://techland.time.com/2013/06/19/we-can-now-map-rooms-down-to-the-millimeter-with-a-finger-snap/(2013)Multiple scholarly articles at Google search:https://www.google.com/search?pws=0&q=Precision+of+acoustic+3D+mapping
Most unpopulated/useless PCB - Page 1
Forum section: electronics / general

author: gertux
author_rank: Contributor
timestamp: June 13, 2017, 06:41:35 am
content: Everybody who takes apart electronics stuff knows that often there are unpopulated footprints on PCB's, but when I took apart my Philishave C242 yesterday I found the most unpopulated/useless production PCB I ever stumbled upon.Anybody seen something like this before or even worse ?

author: P90
author_rank: Frequent Contributor
timestamp: June 13, 2017, 06:49:02 am
content: It's cheaper for them to manufacture one design and use it for various models, populating the pcd as needed for more features on higher models.

author: stj
author_rank: Super Contributor
timestamp: June 13, 2017, 07:03:36 am
content: having messed with those myself, i can enlighten you.your missing a philips led bargraph i.c., a bunch of led's, a nicad battery, and a bunch of passives to charge it.

author: P90
author_rank: Frequent Contributor
timestamp: June 13, 2017, 07:08:54 am
content: Quote from: stj on June 13, 2017, 07:03:36 amyup, you have to pay extra for those upgrades... :-)

author: gertux
author_rank: Contributor
timestamp: June 13, 2017, 08:07:56 am
content: @stjthanks for the info about the missing parts, but I won't add them to my trimmer@P90Yep I know why they do this, i just never saw it in this extreme, not one component populated apart from the switchI just wondered if there were more (extreme) examples.

author: stj
author_rank: Super Contributor
timestamp: June 13, 2017, 08:36:04 am
content: well they could have skipped the pcb and hotglued the switch!

author: P90
author_rank: Frequent Contributor
timestamp: June 13, 2017, 09:29:31 am
content: Quote from: stj on June 13, 2017, 08:36:04 amLOLI'm surprised the bean counters didn't

author: buck converter
author_rank: Regular Contributor
timestamp: June 13, 2017, 02:19:24 pm
content: Once took apart a remote for an rc helicopter that never seemed to work. Maybe because half the board was not populated
Ardunio combination lock cracker! - Page 1
Forum section: electronics / general

author: abdullahseba
author_rank: Frequent Contributor
timestamp: June 12, 2017, 11:22:54 pm
content: HiCheck this cool project out

author: amyk
author_rank: Super Contributor
timestamp: June 13, 2017, 12:59:09 am
content: Did they CNC the whole support?Looks as overengineered as a Juicero...

author: alexanderbrevig
author_rank: Frequent Contributor
timestamp: June 13, 2017, 01:13:16 am
content: reminded me of thisalthough slower, much cooler NYC CNC is nice

author: CatalinaWOW
author_rank: Super Contributor
timestamp: June 13, 2017, 03:56:31 am
content: Sort of a bridge to nowhere since there are faster ways to crack these cheap combination locks. On the other hand this could crack better locks that don't have easy mechanical workarounds with some new code and changes to the lock holder.

author: Mr.B
author_rank: Unknown
timestamp: June 13, 2017, 04:03:36 am
content: In New Zealand we just use a universal padlock key.

author: abdullahseba
author_rank: Frequent Contributor
timestamp: June 13, 2017, 04:14:06 am
content: Quote from: Mr.B on June 13, 2017, 04:03:36 amxD

author: CatalinaWOW
author_rank: Super Contributor
timestamp: June 13, 2017, 05:25:00 am
content: Those keys work great, but it takes one of these to close it again. Hard to put the pair in your pocket.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: June 13, 2017, 05:40:26 am
content: I even saw on youtube that you could just break cheap locks using 2 long wrenches, basically using the leverage you have from the long wrenches, You apply a shit ton of torque onto the lock and it cracks.

author: abdullahseba
author_rank: Frequent Contributor
timestamp: June 13, 2017, 06:01:36 am
content: Nah... this is the proper tool

author: MarkS
author_rank: Unknown
timestamp: June 13, 2017, 06:04:33 am
content: Quote from: amyk on June 13, 2017, 12:59:09 amHe owns a CNC machine shop. His videos are always about CNC machining, but sometimes he includes his other interests.

author: abdullahseba
author_rank: Frequent Contributor
timestamp: June 13, 2017, 07:03:02 am
content: Quote from: ZeTeX on June 13, 2017, 05:40:26 amOur window locks can be picked with a hair pin.
Rent a hacker: - Page 1
Forum section: electronics / general

author: yada
author_rank: Frequent Contributor
timestamp: June 17, 2017, 02:28:40 pm
content: URL removed by moderatorFor 200 euro in bit coins this guy will hack into someones life. Can't say I know anyone I would want to do this to but its kind of scary what this guy will do for so little, like 800 euro's to put child porn on their computer.

author: MK14
author_rank: Super Contributor
timestamp: June 17, 2017, 02:35:08 pm
content: I'd suggest you, Please DELETE the link. It is best to NOT publicize illegal links, I guess.I think offering hacks/links for BAD purposes is against the forum rules, if I remember correctly.EDIT: I've done a quick/discrete test, and that seems to be coming from a DANGEROUS/ILLEGAL part of the internet.

author: CopperCone
author_rank: Super Contributor
timestamp: June 17, 2017, 02:52:31 pm
content: this is kind of like advertising the fact that some guy will do a hit if you call a certain number on a bathroom stall and pay them.this kind of service does not actually work if you advertise. It's infinitely more lucrative on the internet to run a scam then to actually do something illegal.even in real life, if you try to hire the local mafia or something to do something like this, probably nothing will happen. yea, we sent him a message. Unless it involves physical harm or major property damage, how are you going to know anyway? Hell, they would probably cut the other guy in so they can keep charging you! Nobody wants to get busted, some stoner is probably just looking for marijuana money on the internet.its all about the money $_$

author: Simon
author_rank: Unknown
timestamp: June 17, 2017, 03:32:36 pm
content: OP banned!
How are these links on Ebay generated? - Page 1
Forum section: electronics / general

author: xrunner
author_rank: Super Contributor
timestamp: June 12, 2017, 04:32:13 pm
content: Just out of curiosity, I was just wondering what system/algorithm generates these types of links. This one is from the front page of Ebay. I don't think humans make them ... is it a database of some kind? Is the very long series of characters a random sequence? Thanks.https://svcs.ebay.com/delstats/clk/rtm?url=https%3A%2F%2Fwww.ebay.com%2Fdeals%2F&p=100000&mc=Z3VpZD1hN2Q4NjQzODE1MTBhN2VhMGRhMDAxYjBmNmExOTQ2Mnx1bD1lbi1VU3xidz1TTUFMTHx0ZHQ9aWlkOjUzMTkzMTkyNjg2MzcyNjg1NDcsY2xraWQ6NTMxOTMxOTI2ODYzNzI2ODU0NnxwbG10PShjaWQ6NzI0IGlpZDo1MzE5MzE5MjY4NjM3MjY4NTQ3IG1pZDoxMTAzIHBpZDoxMDAwMDAgc2lkOi0xKXx1Yz0xfG09MTEwM3xicz0wfDEyPTA=

author: rdl
author_rank: Super Contributor
timestamp: June 12, 2017, 05:11:19 pm
content: Generally speaking, everything from the first ? on is additional information used server side. What that information is exactly, who knows. I suspect a lot of it is tracking info.When posting links to items on ebay, aliexpress, etc. It's best to just delete all that unnecessary stuff, if for no reason other than removing clutter from the post. Just whack off the first ? and everything after. It's a good idea to test that the link still goes where it should, but usually it does.

author: Monkeh
author_rank: Super Contributor
timestamp: June 12, 2017, 05:15:09 pm
content: That is a base64 encoded string.Code:guid=a7d864381510a7ea0da001b0f6a19462|ul=en-US|bw=SMALL|tdt=iid:5319319268637268547,clkid:5319319268637268546|plmt=(cid:724 iid:5319319268637268547 mid:1103 pid:100000 sid:-1)|uc=1|m=1103|bs=0|12=0
Does anyone know how to charge the How to charge fat sharkpreditor v2? FPV gglz? - Page 1
Forum section: electronics / general

author: yada
author_rank: Frequent Contributor
timestamp: June 08, 2017, 01:54:26 am
content: Do any of you drone people use these? They are my latest Toy going into a tiny airplane.I have a bench power supply 1-30V with current limiting capability.What setting should I set it to, to make it charge? The instruction say see your batteries owner manual. 300 bucks and no charger. What the fudge!!!?Don't I take nice pictures?

author: kalel
author_rank: Frequent Contributor
timestamp: June 08, 2017, 02:00:46 am
content: I don't know if this helps:http://www.manualsdir.com/manuals/636447/fat-shark-predator-v2.html?page=7&original=1It's the manual page related to charging.Maybe you will need to search for a "standard" 7.4v lipo pack charger? Or you could check for some details on how a generic charger works when "setting up for 760 mA 7.4V Li-po" as they say.

author: yada
author_rank: Frequent Contributor
timestamp: June 08, 2017, 03:31:08 am
content: I'm so tempted to plug those banana leads into the power supply and set const. current. I thought I saw a youtube video where some one did this and they just timed it and unplugged it when it was done.

author: mdszy
author_rank: Unknown
timestamp: June 08, 2017, 03:57:23 am
content: Quote from: yada on June 08, 2017, 01:54:26 am... You're doing RC aircraft stuff and don't have a charger?Get a cheapo IMAX B6 charger ($40USD) and thank me later. It'll save you a lot of trouble -- and be safer! -- compared to charging with a bench supply.

author: yada
author_rank: Frequent Contributor
timestamp: June 12, 2017, 06:22:33 am
content: Quote from: mdszy on June 08, 2017, 03:57:23 amI have the charger that came with the battery for the plane. Will that work if voltage is the same but mAh is different?

author: mdszy
author_rank: Unknown
timestamp: June 12, 2017, 12:05:16 pm
content: Quote from: yada on June 12, 2017, 06:22:33 amYes, it will.
Small DC fans, what decides their working voltage? - Page 1
Forum section: electronics / general

author: kalel
author_rank: Frequent Contributor
timestamp: June 11, 2017, 06:15:42 am
content: In small DC fans, like computer fans, working voltage is almost always 12v, this is obviously designed for a reason.Let's disregard PWM-supported fans as those have fancier built in controls.What determines the working voltage of such a fan? The number of loops on the coils? Added resistors on the circuit boards?

author: jeroen79
author_rank: Frequent Contributor
timestamp: June 11, 2017, 02:51:55 pm
content: The working voltage would be determined by how the motor is built (number of turns in the coils, wire thickness, ventilation, max rpm of the bearings, etc) and Ohm's law.Higher voltage is more current and more speed so more power and more heat.And eventually something will break.In a meeting modern PC the 12V rail would be the best choice to power the fans so they will be designed with that specification.

author: Gregg
author_rank: Super Contributor
timestamp: June 12, 2017, 05:24:51 am
content: The higher the voltage to a motor, the smaller the wire needed and since most modern motherboards control the fans, it means smaller traces can be used. Also as conductors get hotter they have greater resistance meaning more voltage drop and the higher the voltage, the less the fan is affected by voltage drop.An internet search for computer power supply rails will lead you to the history of how and why modern computers have most of their power available at 12 volts.
Guest  12:39:28  AM Deleting a message. - Page 1
Forum section: electronics / general

author: StillTrying
author_rank: Super Contributor
timestamp: June 11, 2017, 11:43:53 pm
content: How is a Guest doing that?

author: Halcyon
author_rank: Unknown
timestamp: June 12, 2017, 12:14:42 am
content: It could be some kind of malicious user or script attempting to execute the delete function on the forum (which is normally not visible until you're logged in, but the page/function is still there), but would be getting a session verification error instead of actually deleting anything.The "Who's Online" page just looks at what page a particular user is viewing (not whether what they are doing was successful or not).

author: MarkS
author_rank: Unknown
timestamp: June 12, 2017, 02:49:21 am
content: It could also be a member browsing the site anonymously.
Odd datasheet descriptions for an LED - Page 1
Forum section: electronics / general

author: made2hack
author_rank: Frequent Contributor
timestamp: June 12, 2017, 03:41:27 pm
content: Hello all,So, at first I thought it was a typo but further down the datasheet it repeated itself everywhere. No mention anywhere that these LEDs are for grocery store / retail, so I don't know what to make of it.The original datasheet forLTW-3030BSL.

author: technix
author_rank: Super Contributor
timestamp: June 12, 2017, 03:50:33 pm
content: Probably that is how they represent different output spectrums?

author: MK14
author_rank: Super Contributor
timestamp: June 12, 2017, 04:13:44 pm
content: It's apparently because they are colour optimised for the type of food, you want to display, in the best LIGHT colour. Hence the naming scheme.QuoteSource:http://electronic-info.eu/2016092104/leds-for-lighting-food-from-liteonMore info here:https://www.dmlights.co.uk/help/lighting/lighting-stores-what-is-ideal-colour-temperature-displaying-meat-fish-vegetables-bread/Quote

author: rdl
author_rank: Super Contributor
timestamp: June 12, 2017, 04:16:32 pm
content: Yes, lighting for grocery stores has long been selected to enhance the appearance of food, fresh food in particular. Various types of fluorescent tubes were used to bring out the redness in meats and emphasize the warm colors of baked bread. This is just the modern equivalent.

author: made2hack
author_rank: Frequent Contributor
timestamp: June 12, 2017, 05:50:53 pm
content: Heh,I guess so.
Tell me who makes Heterojunction Bipolar Transistors - Page 1
Forum section: electronics / general

author: fonograph
author_rank: Frequent Contributor
timestamp: June 11, 2017, 06:32:15 pm
content: I did quick google search and I only found that INFINEON makes HBT,the google results spits out tons of white papers but no manufacturers,I tried looking at digikey but there isnt BHT options when searching RF bipolar transistors.Can you tell me what transistor manufacturers currently sell HBT?
anybody know if this is legit  - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: June 11, 2017, 02:44:48 am
content: so i have some money on skrill i really want to transfer to paypal is this legithttps://www.globelmoney.com/zone/skrill-to/skrill-to-paypal/paypal.html

author: MK14
author_rank: Super Contributor
timestamp: June 11, 2017, 02:50:03 am
content: Multiple sources seem to say it is a SCAM site.E.g.https://uk.trustpilot.com/review/www.globelmoney.comQuote

author: sony mavica
author_rank: Frequent Contributor
timestamp: June 11, 2017, 02:58:06 am
content: Quote from: MK14 on June 11, 2017, 02:50:03 amthanks its just so hard to find sites that take skrill

author: MK14
author_rank: Super Contributor
timestamp: June 11, 2017, 03:08:27 am
content: Quote from: sony mavica on June 11, 2017, 02:58:06 amIf it was me, I'd avoid SKRILL for that very reason.I.e. I'd try and stick to cash, normal banking transfers, credit cards (VERY trustworthy things, e.g. Digikey/Mouser etc) or Paypal.

author: sony mavica
author_rank: Frequent Contributor
timestamp: June 11, 2017, 03:14:28 am
content: Quote from: MK14 on June 11, 2017, 03:08:27 ami do surveys online and get payed really well but they only pay to skirll now

author: MK14
author_rank: Super Contributor
timestamp: June 11, 2017, 03:33:47 am
content: Quote from: sony mavica on June 11, 2017, 03:14:28 amI see, that makes sense.As blueskull suggests, hopefully there is a more direct/legitimate way of extracting the money.

author: MarkS
author_rank: Unknown
timestamp: June 11, 2017, 06:25:44 am
content: My first hint would be the misspelling of "global."
Apple's answer to Amazon Echo and Google Home is here - Page 1
Forum section: electronics / general

author: Groucho2005
author_rank: Regular Contributor
timestamp: June 11, 2017, 09:35:07 am
content: Amazon EchoGoogle HomeApple i4Ply

author: skarecrow
author_rank: Regular Contributor
timestamp: June 11, 2017, 01:49:53 pm
content: That's so like Apple to show up 5 years late to the party with a shitty copy of what others have done well and claim they invented the technology. I wouldn't even wipe my ass with an Apple product. :-DSent from my XT1565 using Tapatalk

author: Halcyon
author_rank: Unknown
timestamp: June 12, 2017, 12:55:26 am
content: While we're "Apple bashing", perhaps Apple should just stick to what they're good at: Telling consumers what they want, not the other way around.

author: Halcyon
author_rank: Unknown
timestamp: June 12, 2017, 01:16:07 am
content: Quote from: evb149 on June 12, 2017, 01:10:04 am100% spot on. You can also lump "social media" into that category. The users are the product, not the consumer. Those companies are making huge amounts of money off your data and personal information. I find it hypocritical that people in Australia bitched and moaned about providing "personal information" in our last government Census (which really wasn't all that personal), but they were more than happy to share their lives, movements, habits and opinions on the internet for all to see.
Tech stock went pass the crust into the molten magma - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: June 10, 2017, 03:44:18 am
content: Well... Not a good day for technology stocks.Apple down 3.9% today - single day drop.Facebook down 3.3%etc. etc.Nasdaq Composite (more technology stocks) dropped 113.85 points (1.8%) while Dow Jones (less heavily tech) went UP 89.44 points (0.42%)(All numbers above quoted from Reuters' article linked below.)http://www.reuters.com/article/us-usa-stocks-idUSKBN1901LX

author: calexanian
author_rank: Super Contributor
timestamp: June 10, 2017, 05:17:13 am
content: I hope people are realizing tech booms are not the market salvation. You can't rely on innovation to bring profits. Tesla is an example. They have still not made net dollar one yet.
Why Did The CIA Kidnap This Cold War Spacecraft? - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 08, 2017, 11:20:17 pm
content: The actual story:https://www.cia.gov/library/center-for-the-study-of-intelligence/kent-csi/vol11no1/html/v11i1a04p_0001.htm

author: CopperCone
author_rank: Super Contributor
timestamp: June 09, 2017, 11:06:26 pm
content: they thought it had class IV lasers and megaton nuclear weapons
Reverse engineering of the ESP8266 watchdog timer - Page 1
Forum section: electronics / general

author: novlean
author_rank: Newbie
timestamp: June 09, 2017, 04:02:59 pm
content: ESP8266 contains a hardware watchdog timer (WDT) module. As many parts of ESP8266, it is undocumented. While working on Mongoose OS ESP8266 port, we reverse-engineered most of the module's functionality and ROM functions. This article describes the process and the results.https://mongoose-os.com/blog/esp8266-watchdog-timer/
EEVBlog forum suggestion - Page 1
Forum section: electronics / general

author: Ampera
author_rank: Super Contributor
timestamp: June 09, 2017, 05:14:18 am
content: I have recently been administrating a Simple Machines Forum, and have found a mobile interface solution that is I think better than the paid option this forum currently uses.Please note this is a suggestion, I don't know if the admins already know of this.The solution is in two parts. The first is a custom theme called iOS.MFhttps://custom.simplemachines.org/themes/index.php?lemma=2803This is a minimalistic theme designed to look good on mobile devices, taking the UI style of iOS, but to make it work only on mobile devices, this mod can be used.https://custom.simplemachines.org/themes/index.php?lemma=2803This allows one to set a theme to display only on mobile devices.This solution IMO looks better than what is already installed, and is usable for free.

author: EEVblog
author_rank: Unknown
timestamp: June 09, 2017, 05:20:05 am
content: Changing the theme and hence look and feel of the forum is HUGE thing to do. Everyone hates change.So the main desktop version won't be changed.For a mobile specific version I think the existing SMF4Mobile looks and works quite well anyway? What's wrong with it? I think it looks better than the one your are proposing, but of course that's subjective.

author: Ampera
author_rank: Super Contributor
timestamp: June 09, 2017, 05:24:05 am
content: It's only for mobile devices? It also costs less than what you use now. If you want an example I can show you the forum I put it on. Any switches to the desktop theme probably isn't the mod, I just didn't install some parts of the site for that theme.Also it only works when your browser requests a mobile site.OldschoolTTT.comIgnore the content, it's for an unrelated video gaming organization.

author: EEVblog
author_rank: Unknown
timestamp: June 09, 2017, 05:29:03 am
content: Quote from: TwoOfFive on June 09, 2017, 05:24:05 amSMF4Mobile was a one-off cost, bought and paid for.QuoteI just tried it on my Android chrome phone and it looked decent at first and then broke into the desktop version when going into a category.It's broken somehow.

author: Ampera
author_rank: Super Contributor
timestamp: June 09, 2017, 05:33:07 am
content: I'm gonna try to fix that in about a week, I'm on vacation right now so all I have is an tablet.

author: EEVblog
author_rank: Unknown
timestamp: June 09, 2017, 05:37:00 am
content: So yeah, sorry, I'm not going to install it.I have had zero reports of any issues with SMF4Mobile.If it ain't broke, don't fix it.

author: Ampera
author_rank: Super Contributor
timestamp: June 09, 2017, 05:50:22 am
content: Understandable, have a great day.
Adam Savage Builds the LEGO NASA Apollo Saturn V - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: June 07, 2017, 10:54:57 pm
content: Pretty cool set of LEGOS.

author: Gyro
author_rank: Super Contributor
timestamp: June 08, 2017, 12:02:55 pm
content: Pah! not a patch on the Airfix kit one I got for my 10th birthday. It had nearly as many bits as the real thing. A real pain to get the lunar lander feet aligned (butt joints) - happy solvent fueled days!

author: Howardlong
author_rank: Super Contributor
timestamp: June 08, 2017, 12:19:34 pm
content: Quote from: Gyro on June 08, 2017, 12:02:55 pmI think I was a bit younger, maybe 6 or so, when I had the Airfix one, but I also remember my old man doing all the work for some reason, I know I would ;-)

author: CJay
author_rank: Super Contributor
timestamp: June 08, 2017, 01:00:57 pm
content: Quote from: Homer J Simpson on June 07, 2017, 10:54:57 pmAbsolutely, but Lego please

author: igendel
author_rank: Frequent Contributor
timestamp: June 08, 2017, 01:30:32 pm
content: That's the suggested model that got enough public votes, right? Beautiful. I'm hoping and waiting for the Apollo Moon Explorers one...https://ideas.lego.com/projects/22259789-f741-40f4-b48f-118ce9af2774[Edit: Oh, and it has 1969 pieces]

author: EEVblog
author_rank: Unknown
timestamp: June 08, 2017, 03:00:28 pm
content: I have one on backorder the day it came out
Sylvania Subcarrier FM Receiver Radio  - Page 1
Forum section: electronics / general

author: rcbuck
author_rank: Frequent Contributor
timestamp: June 09, 2017, 04:02:03 am
content: I built an SCA adapter for my FM Tuner back in the early 70's. There were several magazine articles published telling how to build one and how to connect it to the FM radio. If I remember correctly, you connected it to the output of the FM detector circuit. The circuit is simple, just an NE565 IC and a handful of other components.Muzak used SCA for their "elevator music" broadcasts to businesses. I lived in Tampa, FL at the time and I could pick up 5 or 6 different SCA broadcasts. I don't know if SCA broadcasts are still in use in the same form as in the 70's. I know some of the FM stations now piggyback digital channels onto their main carrier. The digital channels usually carry the AM stations that belong to their family group of stations.

author: BrianHG
author_rank: Super Contributor
timestamp: June 09, 2017, 05:43:02 am
content: I know here in Montreal, they used to send modem signals on FM station subcariers, containing real-time encrypted stock market feeds. The internet has made them obsolete.I think something was wrong with the radio in the YT video, the quality shouldn't have been so crummy...
So now Atmel makes IDEs and compilers for ST? - Page 1
Forum section: electronics / general

author: Ushiwaka
author_rank: Regular Contributor
timestamp: June 07, 2017, 02:57:41 am
content: Says STM32F0 tutorialUses Atmel StudioSource:https://newbiehack.com/categories/newbiehack-microcontroller-ARM-stmicro-STM32F0R6-beginners-kit

author: thm_w
author_rank: Super Contributor
timestamp: June 07, 2017, 07:13:33 pm
content: If you watch the youtube video its from 2012 for Atmega32.So someone just linked whatever content they thought was relevant and its wrong.$40 for that kit is way too much, considering they didn't make their own content.

author: Ushiwaka
author_rank: Regular Contributor
timestamp: June 08, 2017, 01:21:37 am
content: Quote from: thm_w on June 07, 2017, 07:13:33 pmThe 40$ part is true, I was likewhen I saw that price...Anyways I already got an F0 Discovery and it's wayyy better (and it's cheaper and it has a REAL ST-LINK not that clone)They did make their own content tho:https://newbiehack.com/categories/newbiehack-ARM-tutorialAnd I actually used it with my F0 Discovery.So I guess some dumbass messed around with the webserver and put the wrong content? IDK. But that's still a very funny mistake.
IBM unveils 5nm IC, what will we do with these? - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: June 08, 2017, 02:13:16 am
content: https://arstechnica.com/gadgets/2017/06/ibm-5nm-chipIn 7 years, our phones will roast our best PCs today on a tiny lithium battery.
Formlabs Fuse 1 SLS 3D Printer - Page 1
Forum section: electronics / general

author: Falcon69
author_rank: Super Contributor
timestamp: June 07, 2017, 07:15:33 pm
content: Nice. I'm tempted. But $20k is quite abit.Be better if they had more colors. Grey is just not gonna cut it. I like the fact that you can use the parts right away without having to really do anything else to them.

author: CM800
author_rank: Frequent Contributor
timestamp: June 07, 2017, 07:24:37 pm
content: I believe you could affordably built one for approx 7-10k, you can buy YAG laser / fiber lasers for a little below that.Specifically, there are laser engraver heads of around 30W or so that would be suitable.
Room temperature silicon based quantum computing expectations - Page 1
Forum section: electronics / general

author: technix
author_rank: Super Contributor
timestamp: June 07, 2017, 02:48:10 am
content: Rumor has it that Intel is researching room temperature silicon based quantum computing. That is building quantum computing components into a regular CPU, either as part of the regular cores or as separate cores sharing the bus.Do you have any expectation from this?

author: BrianHG
author_rank: Super Contributor
timestamp: June 07, 2017, 03:27:07 am
content: Citations needed...

author: Brumby
author_rank: Unknown
timestamp: June 07, 2017, 03:37:41 am
content: Found this - albeit 6 months old:https://www.technologyreview.com/s/603165/intel-bets-it-can-turn-everyday-silicon-into-quantum-computings-wonder-material/
RoHS legislation - Page 1
Forum section: electronics / general

author: jadew
author_rank: Frequent Contributor
timestamp: June 07, 2017, 12:25:26 am
content: Hey guys,I've been reading recently that electronic kits are exempt from RoHS conformity. Is this true? and if yes, where can I read about it?I'm also curious about what constitutes a kit.Thanks

author: helius
author_rank: Super Contributor
timestamp: June 07, 2017, 12:54:42 am
content: A typical kit only contains components (which you can basically only buy in ROHS finish unless they are military spec), a printed circuit board (which you can have made in ENIG finish which is ROHS compliant), and instructions. Such a package would be compliant with ROHS; it is not an electronic product containing prohibited substances.

author: jadew
author_rank: Frequent Contributor
timestamp: June 07, 2017, 01:14:36 am
content: The problem is that one of the components doesn't have any RoHS compliance declarations in its datasheet. Also, I'd like to deliver the board assembled, except that a few cables won't be connected and there will be some screws to fasten too.It's a plugin board for another product.