hybridfree/eevblog-posts huggingface dataset:
Are there any decent hobbyist conventions/expos in the UK? - Page 1
Forum section: electronics / general

author: KSP
author_rank: Regular Contributor
timestamp: April 13, 2016, 01:48:12 pm
content: All the electronics expos I can find on the internet seem very corporate (i.e. National Electronics Week), I'm looking for something where hackers and hobbyists show off there gizmos and widgets, if such a thing exists.Anyone know of anything like this in the UK?

author: StuUK
author_rank: Frequent Contributor
timestamp: April 13, 2016, 01:50:42 pm
content: we seem to be sadly shy of these things in the UK, must be the British reserve

author: StuUK
author_rank: Frequent Contributor
timestamp: April 13, 2016, 01:51:53 pm
content: Maker Faire UKwww.makerfaireuk.com/Maker Faire UK: The Greatest Show and Tell on Earth! Presented by Centre for Life. Hosted in Newcastle upon Tyne.

author: KSP
author_rank: Regular Contributor
timestamp: April 13, 2016, 02:08:52 pm
content: Maker Faire looks pretty interesting. Only problem is from Hertfordshire to Newcastle is a bit of a trekI will certainly look in to going though, Its this month too!

author: MrSlack
author_rank: Frequent Contributor
timestamp: April 13, 2016, 02:23:04 pm
content: Dunstable downs boot sale is about the only thing I'd go to and I'm not doing that this year as I'll just buy more projects I'll never get around to finishing

author: tggzzz
author_rank: Super Contributor
timestamp: April 13, 2016, 03:09:18 pm
content: Not the same thing, but close in some respects:http://rsgb.org/main/news/rallies/I'd have a look for maker space or hackspace open days.

author: Howardlong
author_rank: Super Contributor
timestamp: April 13, 2016, 03:24:00 pm
content: Not quite an expo, more of a social next weekhttps://www.eevblog.com/forum/amphour/london-meetup-tuesday-19-april-2016-1830-yorkshire-grey/

author: Fred27
author_rank: Unknown
timestamp: April 13, 2016, 08:52:29 pm
content: There has been a Maker Faire or two in London. Not sure if they're still going.

author: SKPang
author_rank: Unknown
timestamp: April 13, 2016, 11:07:38 pm
content: There is a meet up in May in London which I'm attending:http://www.meetup.com/LondonArduino/events/230194102/

author: KSP
author_rank: Regular Contributor
timestamp: April 14, 2016, 12:16:10 pm
content: Thanks GuysI found a small Hackspace in Hitchin, Hertfordshire, very close to me in fact!http://hackhitchin.org.uk/Any members on here?Also, some of those meets and rallies look worth a vist, thanks again.
LED Sourcing? 2mm X 5MM X 7mm VF-12v to 14V  - Page 1
Forum section: electronics / general

author: KG7AMV
author_rank: Frequent Contributor
timestamp: April 13, 2016, 03:28:29 am
content: Looking for a place to get 2mm X 5mm X 7mm Rectangular led's with Integrated Resistor for Forward Voltage of 12-14V in White, Red, and Blue?Tried some usual sources Mouser, Digikey, Etc. no luck.FoundYellow?http://www.lumex.com/ssl-lx25783yd-12v

author: mafio
author_rank: Contributor
timestamp: April 13, 2016, 10:00:25 pm
content: Could always hit the chinese market aliexpress.com Not sure what they have for this purpose.
WiFi Pineapple MK4 / MKIV Firmware Re-FLASH - Page 1
Forum section: electronics / general

author: TheEPROM9
author_rank: Frequent Contributor
timestamp: April 16, 2016, 11:22:20 pm
content: I know this is not completely electronics related but I want to document my thoughts on the process somewhere and I can't be assed with YouTube.As some of you may or may not know I am into computer security (In fact it is my creare). So I found on eBay, unit new are about £100, which is not unreasonable for what they do.First off follow this guide.http://mr-protocol.blogspot.co.uk/2013/12/wifi-pineapple-mark-iv-clean-flash-uart.htmlAll the links to firmware in the post are dead.Firmware:https://www.wifipineapple.com/downloadsOther AUX files you will need are here:https://forums.hak5.org/index.php?/topic/26477-factory-clean-flash-files/This is a fairly complex and convoluted process but that should not be a problem you you guys. You will need a TTL serial to USB converter with good old Putty or what ever you like.This works with both Linux and Windows =-)If you are MAC, just follow the Linux guide.I would also highly recommend having Wireshark (Shows Computer Network Packets) running while doing this. Google it if you are unsure.You want to set you PC IP address to 192.168.2.100/24 (This seems to differ based on the firmware used for the device, that is why you want Wireshark so you can see what IP address the Pineapple is looking for)The first part of the process is quite janky, don't be surprised if it tries a few times before it succeeds in getting the boot loader files.The device IP you will do the file transfer to is 192.168.2.1/24 (This is the address you will send the main firmware file to)Once the process is complete it will go to it's default IP address stated in the literature.Sadly my Wireshark capture of the process is to large to attach, sorry.Legal disclaimer:Once you have been successful you are free to hack wireless networks, just be sure to only hack ones you have permition for or your own equipment.
whats the progress of flux capacitator? - Page 1
Forum section: electronics / general

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 13, 2016, 10:31:10 am
content: as i wish to meet the younger me and tell him everything i know all these years, but... since i never met the older me, the chances are... very slim, or non existence...http://www.9news.com.au/world/2016/04/13/12/34/unearthed-mummys-adidas-sneakers-spark-time-travel-theorieshttp://www.express.co.uk/news/weird/600855/PICTURED-The-STAGGERING-photos-thought-to-PROVE-time-travel-EXISTS

author: rrinker
author_rank: Super Contributor
timestamp: April 13, 2016, 12:20:56 pm
content: The explanation in the second link for the 1938 "cell phone" is just as bizarre as the idea that it is a cell phone - "experimenting with wireless phones"? 1938 rf technology in no way could fit in something as small as what that appears to be, unless in her other hand she is carrying a big box of tubes and batteries.I'm calling photoshop on most of that stuff.

author: rfeecs
author_rank: Frequent Contributor
timestamp: April 13, 2016, 06:29:03 pm
content: These guys discussed / debunked some of these pictures, particularly the hipster time traveler and a different cell phone in the past:https://youtu.be/e4fBR4p_UtETheir theory is the cell phone is actually a hearing aid.

author: Towger
author_rank: Super Contributor
timestamp: April 13, 2016, 06:42:35 pm
content: About the same as the progress on Dave C5 restoration project.
Repairing electric vehicles - Page 1
Forum section: electronics / general

author: woodchips
author_rank: Frequent Contributor
timestamp: April 13, 2016, 09:06:46 am
content: There was an article on the BBC about the need for people to repair electric vehicles. The main point seemed to be that the high voltage was dangerous and the repairers needed to be licenced.The interviewee said that there was 600-800V DC in the cars. Undoubtably dangerous, but did garage staff need a licence in exposives to service petrol powered vehicles?I have never seen inside an electric vehicle, are they that dangerous or is just common sense needed?Reading about the Tesla cars it looks to me that repair is a module swap operation, hopefully the on board computing power can tell you exactly what needs changing? So why not DIY? Or are we at the point where not having the relevant pass words means it won't work afterwards?Has anyone actually fixed any?

author: tggzzz
author_rank: Super Contributor
timestamp: April 13, 2016, 09:49:37 am
content: Quote from: woodchips on April 13, 2016, 09:06:46 amThere used to be many accidents. Even as late as the 1960s airliners were being destroyed by fires breaking out while being refuelled bytrainedground crew. It took a long time to determine the cause and introduce new equipment and training that resolved the issue.Batteries in electric cars are still a new, imperfectly understood technology. There are examples of that for electric cars, and many more for other equipment - just look at youtube.QuoteCommon sense isn't common. Doubly so in this case, since it is difficult for somebody to have common sense about something they've never encountered before.The Dunning-Kruger effect is strongQuoteWhere are you going to get another module from? Look at the fires on youtube to see what happens when replacing their laptop batteries with ebay clones.Replacing a cell in a battery is very different to replacing the battery. That must be controlled for the forseeable future, to ensure safety.

author: Delta
author_rank: Super Contributor
timestamp: April 13, 2016, 10:26:01 am
content: Hmmmmm, could be a future career path for this unemployed industrial ET....
Behold... ART! - Page 1
Forum section: electronics / general

author: XOIIO
author_rank: Super Contributor
timestamp: April 13, 2016, 08:26:41 am
content: So, I was reminded of this, I encountered them in naoshima in japan, in a fairly schmancy, pretentious seeming art museum, and yes, they are in fact, functioning, though they only have one pin now.Yup, you can pay nigh on 20 Canadian pesos, to get a toggle switch with a pin to... well, pin on stuff. It was tempting to buy one just for the sheer novelty of saying "Hey look, I have this $20 toggle switch", but I figured I could just make one when I get home.

author: Halcyon
author_rank: Unknown
timestamp: April 13, 2016, 08:43:47 am
content: 1620 ofanythingseems too much for that. Except maybe Zimbabwean Dollars (including postage).

author: lpc32
author_rank: Frequent Contributor
timestamp: April 13, 2016, 04:13:51 pm
content: What's that supposed to be?

author: XOIIO
author_rank: Super Contributor
timestamp: April 13, 2016, 05:15:37 pm
content: Quote from: lpc32 on April 13, 2016, 04:13:51 pmIt's a pin.

author: Mechanical Menace
author_rank: Super Contributor
timestamp: April 13, 2016, 05:37:16 pm
content: Quote from: XOIIO on April 13, 2016, 05:15:37 pmOr a button or a badge depending on where in the world you are.

author: lpc32
author_rank: Frequent Contributor
timestamp: April 13, 2016, 05:47:30 pm
content: How much do LM317s go for?

author: SeanB
author_rank: Super Contributor
timestamp: April 13, 2016, 06:24:25 pm
content: Quote from: Halcyon on April 13, 2016, 08:43:47 amWould not even buy a sheet of toilet paper when it was still a currency.

author: Towger
author_rank: Super Contributor
timestamp: April 13, 2016, 06:49:53 pm
content: I pulled a 27 euro push momentary action button of a bit of rack mount kit. It is red. Does it count as art?

author: XOIIO
author_rank: Super Contributor
timestamp: April 13, 2016, 07:09:08 pm
content: Quote from: Towger on April 13, 2016, 06:49:53 pmCan you stick it on clothing and act pretentious, while pretending to see a deeper meaning?If so, then yes!

author: lpc32
author_rank: Frequent Contributor
timestamp: April 13, 2016, 07:36:44 pm
content: https://en.wikipedia.org/wiki/Artist%27s_Shit

author: XOIIO
author_rank: Super Contributor
timestamp: April 13, 2016, 08:53:30 pm
content: Quote from: lpc32 on April 13, 2016, 07:36:44 pmMy god, "A series of balloons filled with his own breath".
Asset Management Software for the Home / Lab / Garage etc... - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: April 13, 2016, 07:53:21 am
content: Since I've still got boxes I'm yet to unpack, I figured it's probably time I catalog my belongings (mostly the electronics and high-value gear so I have a record of serial numbers, value etc...').In the past I used a simple Excel spreadsheet but when certain items with unique serial numbers were accessories (or "children") of a parent item, then things got a bit messy. It'd be good to have a concise database for insurance purposes.A nice feature would be some type of 'alert' which reminds me of items that require maintenance, servicing or calibration. It need not be automated via e-mails or SMS or anything, just something that pops up when you next go into the program that says "Hey, this item needs attention".How does everyone else do it? Suggestions for software?

author: HackedFridgeMagnet
author_rank: Super Contributor
timestamp: April 13, 2016, 08:38:41 am
content: For one job I did an asset sheet, I put cal dates in and cal due dates.Then with an excel formula make the due date cell go green red or orange depending on the the cal due date to the current date.For invoicing and stock control just rolling my own in .NET and sql server. I always run it in the VS debugger, That way any weird stuff gets caught in an exception, so i can find it, fix it and repair db damage all in one go.

author: Halcyon
author_rank: Unknown
timestamp: April 13, 2016, 08:40:16 am
content: Quote from: HackedFridgeMagnet on April 13, 2016, 08:38:41 amI'm not that clever.
Microsoft’s AI chatbot - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: April 12, 2016, 06:17:50 pm
content: I had such a good laugh I decided to lighten your day as well.----------------- ----------------- -----------------Twitter taught Microsoft’s AI chatbot to be a racist asshole in less than a day...http://www.theverge.com/2016/3/24/11297050/tay-microsoft-chatbot-racist----------------- ----------------- -----------------See also:https://www.techinasia.com/tay-bad-microsofts-chinese-chatbot-racist----------------- ----------------- -----------------

author: botcrusher
author_rank: Regular Contributor
timestamp: April 12, 2016, 06:29:11 pm
content: After the second shutdown, didn't they release the framework to the public?

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 12, 2016, 06:46:16 pm
content: Looking at Xiaobing's conversation we didn't get very far since Lisa.

author: dannyf
author_rank: Super Contributor
timestamp: April 12, 2016, 08:08:48 pm
content: It speaks volume about us, not much about the chatbot.

author: Delta
author_rank: Super Contributor
timestamp: April 12, 2016, 08:22:54 pm
content: I think it shows their AI algorithms are spot on - a chat bot that adapts to its surroundings, and its surroundings were twitter...

author: botcrusher
author_rank: Regular Contributor
timestamp: April 12, 2016, 08:28:47 pm
content: Yup. They should have biased Tay by exposing her to fake tweets and or some filtering guidelines first.

author: Vgkid
author_rank: Super Contributor
timestamp: April 12, 2016, 09:11:02 pm
content: "Gas the bikes, race war" sounds like a movie plot.

author: Rick Law
author_rank: Super Contributor
timestamp: April 12, 2016, 10:07:40 pm
content: Quote from: PA0PBZ on April 12, 2016, 06:46:16 pmI played with the program Lisa at the time and I rather agree with your assessment there. Certain special application does better - such as the phone company's answer-bot "what do you want to do with your account today, you can say modify account, check payment..." But general conversation is another world.Also, I think there is certain arrogance of the new generation, no different than when I was young and was then the new generation of the time. It is shocking to young folks that they could learn from the old folks. Microsoft could have learned something from Lisa (the danger of parroting) but they did not.The ability to do better lexical analysis is much better now, but this is a new world - PC world. Something you just can't say. It is refreshing to see Microsoft Tay just speaks her mind.

author: dannyf
author_rank: Super Contributor
timestamp: April 12, 2016, 11:47:31 pm
content: QuoteAbsolutely. The AI is designed to regurgitate what's said to him/her. and it does a damn good job at that. Unfortunately, when you are surrounded by a bunch of offensive racists, that AI tends to reflect back offensive racist things.an ace for the Microsoft team.

author: XOIIO
author_rank: Super Contributor
timestamp: April 13, 2016, 03:35:35 am
content: Quote from: timb on April 13, 2016, 01:50:53 amNeeds more d33d3d3d3d
OTG and Active Devices - Page 1
Forum section: electronics / general

author: metrologist
author_rank: Super Contributor
timestamp: April 12, 2016, 11:43:23 pm
content: Hi All,I am not all that familiar with OTG other than using it to connect USB memory devices to my tablet. This afternoon I was asked to volunteer my phone for some testing that required an Android OS. My phone was plugged into a measuring instrument via OTG USB cable. The instrument usually uses USB for connecting USB memory devices or remote programming.I noticed that the home/back LED buttons on my phone were very bright when plugged into the instrument. I was thinking that the OTG cable generally connects passive devices and the phone would power them rather than seeing an input voltage. I wonder if this could be an issue and damage the phone?
1960's COLOR TV Set-up and Alignment - Page 1
Forum section: electronics / general

author: 4cx10000
author_rank: Regular Contributor
timestamp: April 14, 2016, 09:00:34 pm
content: I've certainly been into that!Remember setting convergence on delta gun CRTs, sometimes that was quite an challenge!

author: med6753
author_rank: Super Contributor
timestamp: April 14, 2016, 09:04:06 pm
content: Quote from: 4cx10000 on April 14, 2016, 09:00:34 pmMore like a nightmare!
Alt-S hotkey caught when posting in this forum? - Page 1
Forum section: electronics / general

author: lpc32
author_rank: Frequent Contributor
timestamp: April 12, 2016, 01:42:31 pm
content: Anyone else finds it most unfortunate that the forum software here does a submit/post on Alt-S? (Even though the message posting page claims it's Shift+Alt+S.) Almost every one of the last few messages I posted was posted prematurely as I tried to get to the browser's search box.

author: mikerj
author_rank: Super Contributor
timestamp: April 12, 2016, 02:04:05 pm
content: Searching within a web page is usually Ctrl-F isn't it?

author: Brumby
author_rank: Unknown
timestamp: April 12, 2016, 02:23:44 pm
content: Quote from: mikerj on April 12, 2016, 02:04:05 pm'F' for Find...It is for Chrome, Firefox and IE......

author: lpc32
author_rank: Frequent Contributor
timestamp: April 12, 2016, 03:33:22 pm
content: Alt-S is my hotkey for the browser's websearch edit box.In case anyone else is bothered by it, here's a Greasemonkey-compatible fix:Code:// ==UserScript==// @include http://*.eevblog.com/forum/*// ==/UserScript==if (oEditorHandle_message) {oEditorHandle_message.registerShortcut('s', 'alt', 's-hk');}
WTF-y products and fails - Page 1
Forum section: electronics / general

author: Kilrah
author_rank: Unknown
timestamp: April 12, 2016, 12:47:04 pm
content: There must certainly be a thread about that already, but I couldn't find it...Walked past this in a shop today. Bug zappers are pretty cool and actually useful where I'm now, but... who the hell thought putting a retractable mains plug at the end of a ~1m long lever was a smart thing to do?!

author: mswhin63
author_rank: Frequent Contributor
timestamp: April 12, 2016, 01:08:37 pm
content: Is there a warning label. To be connected to extension cables only!Agreed, some engineers are just University drop-outs if that is the kind of rubbish to come through.Quote from: Kilrah on April 12, 2016, 12:47:04 pm

author: Ian.M
author_rank: Super Contributor
timestamp: April 12, 2016, 01:23:58 pm
content: Absolute idiocy. Trading Standards would probably seize that in the UK, and if you carried it on the street with the pins out it might be regarded as an offensive weapon!It should have had a IEC 60320 C8 or C14 connector in the end of the handle, or been designed to charge from USB.

author: Blaffetuur
author_rank: Regular Contributor
timestamp: April 12, 2016, 01:30:12 pm
content: Well if your house burns down because of this, you certainly don't have to worry about bugs

author: digsys
author_rank: Unknown
timestamp: April 12, 2016, 01:48:45 pm
content: Quote from: KilrahI bought something very similar a couple months ago, mainly to pull apart. As a useful tool, it turns out to be pretty useless - you can't swing it near ANYtype of structure, for high risk of damage ... and slow swishing is pointless ... but apart from that, I wanted to check the output. I can confirm it totally fries -flies, mosquitoes, bees, butterflies, small birds, flying squirrels, ducks, geese, bats, lamas, crocodiles, cheekens, pets and others !It has a near lethal arc, with no sort of current limiting. Naturally, the first thing I did was put a boost transistor in the OP stage !! Now I can do larger animals as well !!

author: grumpydoc
author_rank: Super Contributor
timestamp: April 12, 2016, 02:48:31 pm
content: Quote from: Ian.M on April 12, 2016, 01:23:58 pm+1 especially as it is also not a BS1363 compliant plug - shrouded earth.It just looks very....... odd.
Exported Power from PV Systems; Meter Reading - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: April 12, 2016, 07:20:10 am
content: I've recently installed a solar PV array on the roof with a 5 KW inverter. The entire system usually generates about 4500 watts @ 240v on a sunny day. I believe it's a Net Metering system (in that any excess I don't use is supplied back to the grid).When I look at the electrical meter, it shows figures for imported and exported power. My question is, the value shown on the display for export, is that measuring the total power generated by the PV array or just the excess?

author: coppice
author_rank: Super Contributor
timestamp: April 12, 2016, 07:29:17 am
content: Your meter shows the amount of energy you have imported from the grid, and the amount you have exported to the grid. It knows nothing about what is happening within your house, so that is all it can record. It might allow you to see the power being imported or exported as well, but a lot of meters don't.

author: HackedFridgeMagnet
author_rank: Super Contributor
timestamp: April 12, 2016, 08:44:09 am
content: Does it auto cycle between import and export? Looking at the chevrons?Right now it is showing export.I guess it could show the info in 2 ways,1. keep a record of both import and export and toggle between them.2. Just a net figure and have the chevron indicating whether it is imported or exported.Have a look at night, if the figure is going down it is showing net, if it only goes up on sunny days it is showing the gross export.that seems to be the manual.http://www.mwatechnology.com/wp-content/uploads/2015/07/A1100-EndUsersGuide.pdf
KW-37,  JASON,  Encryption System  - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: April 10, 2016, 11:17:16 pm
content: Interesting reading...https://en.wikipedia.org/wiki/KW-37http://www.jproc.ca/crypto/kwr37.html

author: Halcyon
author_rank: Unknown
timestamp: April 11, 2016, 08:36:09 am
content: Fascinating. Thanks for posting. It's amazing the level of complexity these systems had considering their age.
Anyone in HK or Shenzhen? - Page 1
Forum section: electronics / general

author: ade
author_rank: Unknown
timestamp: April 09, 2016, 04:30:38 am
content: I may be in HK & Shenzhen in a couple of weeks... anyone based there? It would be great to meet fellow EEVblog members / merchants / engineers / designers / hobbyists.Maybe we can organize regular EEVblog meetups around the world?

author: Bud
author_rank: Super Contributor
timestamp: April 09, 2016, 04:35:59 am
content: Aha, hope you can track down Bob the Batteriser man there and send us some pictures as a proof he is really there

author: ade
author_rank: Unknown
timestamp: April 09, 2016, 04:08:13 pm
content: Hilarious!

author: lpc32
author_rank: Frequent Contributor
timestamp: April 11, 2016, 03:30:49 pm
content: iloveelectronics/Frankyis in HK.

author: coppice
author_rank: Super Contributor
timestamp: April 11, 2016, 03:44:24 pm
content: Quote from: lpc32 on April 11, 2016, 03:30:49 pmYeah, him and 7 million other people.

author: SeanB
author_rank: Super Contributor
timestamp: April 11, 2016, 06:12:15 pm
content: Just wear an EEvblog T shirt, he will find you.....

author: ade
author_rank: Unknown
timestamp: April 11, 2016, 10:40:20 pm
content: Maybe I should make an EEVblog flag, you know like the kind Chinese tour guides like to wave around?But I can already see the newpaper headline, "Batteriser van runs over foreign tour guide"

author: XOIIO
author_rank: Super Contributor
timestamp: April 12, 2016, 12:46:49 am
content: Not sure if he's been mentioned but there is someone that bigclive has been in touch with who lives in shenzen.
Romoss battery bank's "excellent safety" - Page 1
Forum section: electronics / general

author: ice595
author_rank: Regular Contributor
timestamp: April 12, 2016, 09:29:55 pm
content: No, im not talking about the safety of their battery banks them selves, but the way they handle their batteries in their video.Have a look ->I almost had a heart attack when I pauses the video at 0:35.What do you guys think?Well at least they made an effort to toss them in a plastic bin and not a metal trash can right?
Just curious if diodes develope over last years like transistors? - Page 1
Forum section: electronics / general

author: Miyuki
author_rank: Frequent Contributor
timestamp: April 11, 2016, 07:53:08 am
content: Hi,I'm curious if is some progress in Silicone diode technology like at transistors current densities/conductivity and other parameters. Transistors have new models every year with better and better parameters but what diodes? Are they already at limits of technology? Only new thing I know is SiC diodes but they are quite expensive and not yet available at higher current ratings.

author: German_EE
author_rank: Super Contributor
timestamp: April 11, 2016, 09:01:52 am
content: Well, there has been some progress. We started off with point contact diodes using Germanium then switched to junction diodes using silicon. Now we have schottky diodes that have a much lower voltage drop. We also have diodes that can operate as high as microwave frequencies. Some progress then.Finally, silicone is used to give women bigger chests and waterproof bathrooms, silicon is used in semiconductor devices

author: Miyuki
author_rank: Frequent Contributor
timestamp: April 11, 2016, 09:05:22 am
content: I mean progress in recent year like from 2000 or from 80s when first IGBT begins

author: uncle_bob
author_rank: Unknown
timestamp: April 11, 2016, 12:27:32 pm
content: Quote from: Miyuki on April 11, 2016, 09:05:22 amHiSimple answer- no.More complex answer: The voltage drop on a diode at a specific current level has progressed, but not by 2X every 2 years. The speed of a diode capable of carrying a lot of current has gotten better. Again, not by 2X every 2 years ...Bob

author: rrinker
author_rank: Super Contributor
timestamp: April 11, 2016, 01:09:20 pm
content: Seems like the venerable 1N400X series has been around forever. But it gets the job done, and they are cheap. A few of the things I do need a little bit better switching speed, but that's why there's the 1N4148. The REALLY high speed stuff, I'd have to ask my friend, he's the RF and microwave engineer. Other than processor clocks, the fastest thing I have going is just a few KHz.

author: tszaboo
author_rank: Super Contributor
timestamp: April 11, 2016, 01:57:57 pm
content: There is nothing really to improve. Your voltage level determines the geometries, the materials you use the voltage. If you add more die area, you get lower voltage for the same current.If you need lower drop, or higher current (so, basically lower drop) use active parts with gate. There are plenty of ideal diode controllers, but making one is also almost trivial.
Is Dave really moving to a new lab? - Page 1
Forum section: electronics / general

author: Asavage9794
author_rank: Contributor
timestamp: April 10, 2016, 02:35:46 am
content: Is Dave really moving into a new lab? Or did i just fall for a april fool's joke?How many of you thought it was true?? lol I fell for it kind-of. lol

author: Asavage9794
author_rank: Contributor
timestamp: April 10, 2016, 02:43:24 am
content: lol

author: blackbird
author_rank: Regular Contributor
timestamp: April 10, 2016, 06:26:13 pm
content: Dave will probably be moving in to his new lab the Saturday, two weeks before Easter 2017....
Inside the Cheapest Soldering Iron on ebay - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: April 05, 2016, 12:33:06 am
content: About $1.50 US ?

author: Brumby
author_rank: Unknown
timestamp: April 05, 2016, 03:16:09 am
content: I bought one that looked identical to that from a Chinese merchant direct from their website. The internals looked the same, but were a little better put together, including an attempt at some strain relief. Maybe that's why it was nearly double the price!It, too, was unearthed, but had a point that I could attach an earthing wire - so after digging out an old 3 core plug and lead I'd salvaged from another dead appliance, the unit was upgraded and tested.It was rated at 40W 220V and when I measured it, the supply was around 240V and it was consuming 47W. That worked out about right. The only reason I bought it was for working on car wiring (especially in confined spaces) after my old 40W iron died. I've bought a few things from this merchant and while I've not had high expectations, I've haven't had many complaints.For the price, it was worth a shot. Besides, pulling out something from my junk box and actually using it for this upgrade has helped justify my bower bird collection.

author: strangersound
author_rank: Regular Contributor
timestamp: April 07, 2016, 06:30:52 pm
content: Dave had the exact same one in the latest mailbag. The handle was blue, but it was exactly the same. Talk about junk...I might as well just solder a mains cable to a screwdriver.

author: rrinker
author_rank: Super Contributor
timestamp: April 07, 2016, 07:28:59 pm
content: Quote from: strangersound on April 07, 2016, 06:30:52 pmAnd in a pinch it could double as a mug boiler (see that other hideous piece of Chinese junk that Big Clive did a video on).

author: Asavage9794
author_rank: Contributor
timestamp: April 09, 2016, 02:42:21 am
content: It looked sketchy just from the outside lol. The gauge and the quality of the wire gave it away.
Thermal Paste - Page 1
Forum section: electronics / general

author: ElectricGuy
author_rank: Regular Contributor
timestamp: April 07, 2016, 07:08:16 pm
content: Hi;I'm not sure if i have enough Thermal Paste.

author: Kilrah
author_rank: Unknown
timestamp: April 07, 2016, 07:11:52 pm
content: You got the wrong one - silver is better, especially for that side.

author: ElectricGuy
author_rank: Regular Contributor
timestamp: April 07, 2016, 08:15:41 pm
content: Quote from: Kilrah on April 07, 2016, 07:11:52 pm

author: Cubdriver
author_rank: Unknown
timestamp: April 08, 2016, 01:10:23 am
content: Obviously not! Look at the big voids in the middle of the chip where it didn't touch! That center depression needs to be filled. Sheesh!-Pat

author: ElectricGuy
author_rank: Regular Contributor
timestamp: April 08, 2016, 01:25:46 am
content: Quote from: Cubdriver on April 08, 2016, 01:10:23 amDam it, need to buy more!

author: edpalmer42
author_rank: Super Contributor
timestamp: April 08, 2016, 02:06:23 am
content: A little knowledge truly is a dangerous thing!What did the top look like?

author: XOIIO
author_rank: Super Contributor
timestamp: April 08, 2016, 02:08:43 am
content: Quote from: edpalmer42 on April 08, 2016, 02:06:23 amI bet it was bare.

author: NiHaoMike
author_rank: Super Contributor
timestamp: April 08, 2016, 03:04:33 am
content: I wonder if he mixed up the thermal grease with the dielectric grease.

author: mswhin63
author_rank: Frequent Contributor
timestamp: April 08, 2016, 12:07:22 pm
content: missed a couple of spots

author: SeanB
author_rank: Super Contributor
timestamp: April 08, 2016, 07:38:12 pm
content: Good news, the capacitors are not a cause of failure on this board........

author: Gyro
author_rank: Super Contributor
timestamp: April 08, 2016, 08:21:13 pm
content: Much more paste and they would have died of heat transfer from the CPU

author: RGB255_0_0
author_rank: Frequent Contributor
timestamp: April 08, 2016, 08:24:45 pm
content: Quote from: Gyro on April 08, 2016, 08:21:13 pmThat much paste is more likely working like a blanket. And it's only a socket A so no more than 75w TDP stock.
Something with many layers of geek :) - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: April 07, 2016, 11:45:28 am
content: I thought this might be appealing to someone on the forum

author: crispy_tofu
author_rank: Super Contributor
timestamp: April 07, 2016, 11:54:31 am
content: Maybe after that, he'll be able to make a potential difference in the world...Sorry, that was terrible...

author: botcrusher
author_rank: Regular Contributor
timestamp: April 07, 2016, 11:59:24 am
content: If he stays well grounded he could grow up to change the world.Currently, he's just drawing amps out of his parents.

author: AlxDroidDev
author_rank: Frequent Contributor
timestamp: April 07, 2016, 12:33:40 pm
content: I figure being grounded is better than isolated.

author: rdl
author_rank: Super Contributor
timestamp: April 07, 2016, 02:08:00 pm
content: Quote from: AlxDroidDev on April 07, 2016, 12:33:40 pmYeah, I got grounded a lot, but friends could always visit through my bedroom window.

author: Shock
author_rank: Super Contributor
timestamp: April 07, 2016, 04:11:23 pm
content: It's not Sparky's fault he was diagnosed with RCD when he was younger and now easily gets amped up. He just needs a new outlet for all those surges, perhaps the twins that just moved in next door? They don't look switched on but I hear they are pretty lively, which could be a positive.

author: botcrusher
author_rank: Regular Contributor
timestamp: April 07, 2016, 07:40:54 pm
content: Heh heh, that's realllly bad. I love it.

author: Mark
author_rank: Frequent Contributor
timestamp: April 07, 2016, 08:57:34 pm
content: Young Sparky went to his room and got drunk on his secret stash of beer... his parents found him lying on the floor surrounded by Corona.

author: German_EE
author_rank: Super Contributor
timestamp: April 08, 2016, 07:00:10 pm
content: That kid has potential, maybe he will make a difference. His parents need to set up an ohm lab then make the right connections.
Multimeter interface with Desktop Linux - Page 1
Forum section: electronics / general

author: blueadept
author_rank: Contributor
timestamp: April 05, 2016, 11:48:55 am
content: Hey all,I've been a desktop Linux user for 25 years, almost 20 years since I ran Windows.... I've have a multimeter with an optical port on the back (I guess I must be behind the times, but I've never considered using it), and I wondered if there is a standard protocol, or if they are specific to each brand...If it's a standard... is there software for Linux to log/display the data?... if it's not standard, do any of the vendors have such software?... there's no chance in hell I'd load Windows just for that!James

author: nctnico
author_rank: Super Contributor
timestamp: April 05, 2016, 12:04:13 pm
content: What is the brand and model number?

author: XOIIO
author_rank: Super Contributor
timestamp: April 05, 2016, 12:04:49 pm
content: Following because I know there's a pretty good universal software that supports a crapload of models, but can't recall what it is, but I bet it's available on linux.

author: Wytnucls
author_rank: Super Contributor
timestamp: April 05, 2016, 12:14:09 pm
content: https://sigrok.org/wiki/Main_Page

author: blueadept
author_rank: Contributor
timestamp: April 05, 2016, 12:18:40 pm
content: The meter I have is a Voltcraft VC890, which isn't listed but others in the VC800 range are... so I imagine it will be supported.... thanks!

author: Maxlor
author_rank: Frequent Contributor
timestamp: April 05, 2016, 03:24:30 pm
content: If it turns out to not be supported yet, Conrad is nice enough to document the serial protocol (http://www.produktinfo.conrad.com/datenblaetter/100000-124999/124600-in-01-en-Schnittstellen_VOLTCRAFT_VC_890_OLED_DMM.pdf) so getting some basic data logging going shouldn't be much work.

author: mongo
author_rank: Contributor
timestamp: April 07, 2016, 11:06:14 pm
content: If you know any python I have been quite happy with kst, especially when mixed with numpy arrays.https://kst-plot.kde.org/It is far more "real time" than any other solution I have found.
Is test equipment mostly ODM these days. - Page 1
Forum section: electronics / general

author: mongo
author_rank: Contributor
timestamp: April 06, 2016, 06:08:59 pm
content: After figuring out I was a sucker sticking with the traditional brands as I noted here.https://www.eevblog.com/forum/testgear/dsox2000-and-3000-series-licence-have-anyone-tried-to-hack-that-scope/880/I wondered if the test equipment market is mostly using ODM model like computer systems these days.If you are not familiar with original design manufacturer (ODM) it is not the traditional OEM market where people re-label existing white box equipment. The manufacture like DELL provides requirements to an ODM like Quanta which does all the of the design and manufacturing but the design is typically unique to the brand. This has been true for almost all laptops, computer and servers for well over a decade now as HP/DELL and the former IBM sold off their manufacturing a long time ago and purely source from a handful of companies in Asia.The reason I ask is that compared to the past where off-brand gear use to be obviously designed by less experienced individuals the newer gear that I have seen released seems to be consistently designed to a price point.I have a hunch that while Rohde & Schwarz HMO line has design elements that still point to a brand identity (even if it was an acquired one) that it is highly likely the same designers may have also worked on the products for the rising brands from Asia. Obviously there is still the value added features that can differentiate products and brands but if the industry is not there today I assume it will be there soon.

author: PA4TIM
author_rank: Super Contributor
timestamp: April 06, 2016, 06:56:58 pm
content: I repaired a HMO a few weeks ago. Very nice build and all the pcb's etc where made in Germany.

author: mongo
author_rank: Contributor
timestamp: April 06, 2016, 10:16:02 pm
content: Thanks for the reply PA4TIM, their scopes were in the final cut. I just couldn't find one locally to test out. It is awesome that there are still jobs spread around the world for EE's in this market at least. I was able to debug my code problem by down clocking the device and using an old PC board with an EPP port but the obvious reason I wanted my own MSO was to avoid all that fussing around with the logic analyzers timing and state analysis/single shot work flow. It is very possible that I don't understand but a I always though the key difference between logic analyzers and MSOs is the latter’s ability to trigger on and decode serial buses while staying in a more scope like work flow.I would be a lot more tolerant if a $2 PIC18F24J50 couldn't keep up with the analog side here, especially with a $500 decoding license and a $700 breakout cable.Outside of my bad purchase decision I would be interested in any insights others have about the ODM impact on this market. I know that this isn't broadcasted by the companies that use it but it is becoming a very common business model.
Convert Linux program layout to Windows layout - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: April 05, 2016, 01:18:31 am
content: Is there any way to convert .s (assembly code) or .o (object code) generated by LLVM for Linux to Windows format? There are no system calls or APIs. Everything is pure arithmetic algorithm.I'm trying to use ISPC (Intel SPMD Program Compiler) to cross compile for Windows on my Linux server. It has a Windows version, but I want a true cross compiling setup for automation.I'm in a very awkward position since I'm using mingw-w64, so there is virtually no support for it, since it is not remotely as popular as MSVC or GCC.Here mingw-w64 GAS can not recognize .type and .size directives, as well as rodata sections. Is there anyway I can change layout of a Linux .s file to Windows layout?FYI, here is the compile script:ispc simple.ispc -O2 --emit-asm -o simple_ispc.sg++ simple.cpp simple_ispc.s -O2 -o simple #This works properlyx86_64-w64-mingw32-g++ simple.cpp simple_ispc.s -o simple.exe #This throws tons of errorsrm -f *.o *.sI attached the generated .s, renamed to .txt.

author: nctnico
author_rank: Super Contributor
timestamp: April 05, 2016, 12:10:09 pm
content: Maybe you could use one object file and link that into an OS depandant executable. Still... what kind of errors is mingw64 throwing? Maybe it is a matter of setting a simple switch.Also you are writing about putting variables in specific memory segments. These may not be available in the linker descriptor file for Windows. When compiling for Linux or Windows don't put variables in specific memory segments! Just declare const if they need to be read only and let the linker determine where to place them.

author: neil555
author_rank: Contributor
timestamp: April 05, 2016, 09:08:03 pm
content: As far as I know the YASM assembler will assemble gnu assembler format source and can output in most object formatshttp://yasm.tortall.net/

author: nctnico
author_rank: Super Contributor
timestamp: April 06, 2016, 08:13:59 am
content: Quote from: blueskull on April 06, 2016, 07:31:31 amYou are going at this the wrong way. If the memory layout is for Linux then you can't cross-assemble from this step. Why aren't compiling the original C file for Linux or Windows? That is the sensible route.
New member, new subject. - Page 1
Forum section: electronics / general

author: Minmaxmi
author_rank: Newbie
timestamp: April 06, 2016, 09:54:42 pm
content: Dear all,I'm not a new member really being watching Dave's youtube for awhile now to get some educations.Being working in a new job in electronics related area. With a few issues at work I think I should bring forward and hope to get some therapy from others.Why I always get some egoistic person working in electronics industries and they happened to be my boss?What happens to basic engineering with the things you don't know. Like -RESEARCH, DEVELOP, TEST, and IMPLEMENT.Almost every place I've worked in they seem to be driven by "I'm know best you're all stupid then me" or "I need to waffle on so my opions are facts".
Need someone with all knowledge to help build a circuit which consists ater  - Page 1
Forum section: electronics / general

author: Chriscrowdercakes
author_rank: Newbie
timestamp: April 04, 2016, 04:40:47 am
content: Need someone with all knowledge to help build a circuit which consists of a infra red transmitter (in a moving vehical) to a circuit that receives the signal and sends a signal v which will be explained later anyone near Kent??

author: Smokey
author_rank: Super Contributor
timestamp: April 04, 2016, 06:52:19 am
content: Will the specification self destruct in 30 seconds?

author: XOIIO
author_rank: Super Contributor
timestamp: April 04, 2016, 07:35:01 am
content: Quote from: Smokey on April 04, 2016, 06:52:19 amWho knows.I can only assume someone with all the knowledge has ascended to a higher form of life though, and will not use forums as a result.

author: lowimpedance
author_rank: Super Contributor
timestamp: April 04, 2016, 12:09:17 pm
content: Sorry the signal did not get through the tin foil hat ...oh and by the way I wont be passing Kent anytime soon either.I suspect some 'whacky tobaccy' may have been involved a short time prior to the creation of this thread.

author: XOIIO
author_rank: Super Contributor
timestamp: April 05, 2016, 02:57:21 am
content: Quote from: lowimpedance on April 04, 2016, 12:09:17 pmLol

author: crispy_tofu
author_rank: Super Contributor
timestamp: April 05, 2016, 04:55:26 am
content: Quote from: Chriscrowdercakes on April 04, 2016, 04:40:47 amAre you okay?
making walls out of PCB pannels instead of sheetrock? - Page 1
Forum section: electronics / general

author: sarepairman2
author_rank: Frequent Contributor
timestamp: April 04, 2016, 03:08:31 am
content: Would anyone else prefer this?sheetrock makes me think of this

author: SeanB
author_rank: Super Contributor
timestamp: April 04, 2016, 05:24:39 pm
content: Swapping one source of toxin for another with much more..............I prefer brick, at least there you know only the paint will be toxic, the rest has had all organics baked out.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 04, 2016, 09:19:58 pm
content: Yes, it might be UL-94V0 but that still leaves a lot to be desired.There's probably an adhesive based geo-textile something or other, that would resemble epoxy fiberglass, while being far cheaper to build with.Tim
So I put a satellite in space - Page 1
Forum section: electronics / general

author: Red Squirrel
author_rank: Super Contributor
timestamp: April 01, 2016, 06:40:33 am
content: No, not really, but I made an april fool's gag for my game server, saying we started a space program. Thought you guys might enjoy this, I even mention batteriser (so the satellite can last 800% longer without changing the batteries) .http://www.aovaa.space/In theory a pop can would make a decent shielding for something you put in space though.

author: made2hack
author_rank: Frequent Contributor
timestamp: April 01, 2016, 07:53:38 am
content: Did you run your simulations with Jebediah? Or Bill? Because if you chose the wrong one, oh boy...

author: Red Squirrel
author_rank: Super Contributor
timestamp: April 01, 2016, 10:17:31 am
content: Original plan was to send Jebediah but he died on a previous mission. Apparently you should not EVA while re-entering the atmosphere, who knew? He only wanted some fresh air and go on a smoke break, it was kinda cramped in there.

author: MK14
author_rank: Super Contributor
timestamp: April 01, 2016, 10:33:51 am
content: I appreciate the fact that (apparently) you spent a lot of time, effort and web designing work, into creating that "article/page".From the page...QuoteThat's a clever pun, assuming you did it intentionally.

author: made2hack
author_rank: Frequent Contributor
timestamp: April 01, 2016, 07:11:22 pm
content: That's brilliant (space intentionally left blank)

author: Red Squirrel
author_rank: Super Contributor
timestamp: April 01, 2016, 09:15:10 pm
content: Haha yeah that was intentional.I spent way more time on this than I care to admit but it was fun. The domain was like $2 because namecheap had a sale, so it kinda all fell together.

author: SkyMaster
author_rank: Frequent Contributor
timestamp: April 02, 2016, 12:37:36 am
content: Quote from: Red Squirrel on April 01, 2016, 06:40:33 amThis is a good one

author: FrankE
author_rank: Regular Contributor
timestamp: April 04, 2016, 04:07:34 am
content: Quote from: Red Squirrel on April 01, 2016, 06:40:33 amThere's no reason you couldn't be part of a tea who put a satellite in space.

author: SeanB
author_rank: Super Contributor
timestamp: April 04, 2016, 05:27:13 pm
content: Elektor actually did have a section called Canned Circuits, where the only restriction on the project you submitted was that it had to fit in one or more standard cooldrink ( for the youngsters, if you were over 18/21 you could use other) cans to house it. There were a few innovative designs submitted.