hybridfree/eevblog-posts huggingface dataset:
Turkish electronics forum, need some tips - Page 1
Forum section: electronics / general

author: taydin
author_rank: Frequent Contributor
timestamp: March 22, 2018, 02:22:57 pm
content: Hello folks, I have created a Turkish language electronics forum, mainly to motivate our youth here to move their butt's and do something useful with their livesIt is here:http://mekatronik.org/forum/I used Simple Machines Forum software, just like this excellent forum uses. I don't have any commercial ambitions for this forum, the goal is strictly "giving back to my community". But still, it needs to be discovered by the Turkish youth, and the way it is right now, Google doesn't return search results for it.I keep adding content to it, which is mainly "how to" articles, common gotchas in electronics, building a basic electronics labs. I am seeing "visitors" when I look at the stats, but I think those are bots or crawlers, not real people. How can I promote this forum? Should I just keep adding content and wait for it to be eventually picked up in Google?

author: ivaylo
author_rank: Frequent Contributor
timestamp: March 23, 2018, 07:01:11 am
content: Good job on the forum! If you don’t want to spend money on marketing yes, create as much content as you can, but also get others to post links to your site. Hope Dave Jones here notices your post and gives you tips. Posting youtube content and linking back to site and such...

author: taydin
author_rank: Frequent Contributor
timestamp: March 23, 2018, 07:37:14 am
content: Thanks, I will definitely keep adding content. Creating a youtube channel and linking back to the forum is a great idea! Some concepts are much easier explained in a video than writing paragraphs. Especially considering how impatient the kids are nowadays, wouldn't want them to read lengthy paragraphs to learn how to solder

author: ucanel
author_rank: Regular Contributor
timestamp: March 23, 2018, 08:30:00 am
content: As a member of Turkish youth I heard you created a forum from here,maybe this is a way, only whisper it about andsurely hide news where the youth never suspect to look at.Good luck, karaapak from kontrolkalemi forum. = (in Turkish) Hay?rl? olsun hocam, kontrolkalemi'nden karaapak.

author: taydin
author_rank: Frequent Contributor
timestamp: March 23, 2018, 10:13:35 am
content: Nice to know that we have Turkish members in this forumYou are welcome to sign up to the forum. And if you happen to know somebody locally that would be willing to help with web programming stuff, I'd be glad to get in contact!

author: Lord of nothing
author_rank: Super Contributor
timestamp: March 23, 2018, 05:56:21 pm
content: If someone in Turkey need some young employees we have here enough how want go back!Pls call thehttp://www.ams.at/english.html
forum font hacking - Page 1
Forum section: electronics / general

author: grifftech
author_rank: Frequent Contributor
timestamp: March 23, 2018, 04:31:22 am
content: this is the defaultthis is the largest in the drop down menu(36)[size=200pt] this is 200pt

author: Cyberdragon
author_rank: Super Contributor
timestamp: March 23, 2018, 04:52:31 am
content: O RLY?

author: PartialDischarge
author_rank: Super Contributor
timestamp: March 23, 2018, 04:58:49 am
content: Gotta love the internet

author: Rerouter
author_rank: Super Contributor
timestamp: March 23, 2018, 06:23:08 am
content: O RLY?O RLY?O RLY?Code:[size=9.99em]O RLY?[size=99px]O RLY?[size=99pt]O RLY?This should be confusing,

author: Halcyon
author_rank: Unknown
timestamp: March 23, 2018, 06:44:39 am
content: Why does this thread exist? It's not hacking, it's basic code. Also, I wish people (and organisations) would stop using the word "hack" out of context. Re-purposing some piece of Ikea furniture for an unintended purpose is not "hacking", doing something more efficiently is not "life hacking", neither is reheating pizza on a fry pan instead of the microwave.First everything was "viral" now using some common sense and a bit of creativity is a "hack". This world is too dumb for me.

author: RoGeorge
author_rank: Super Contributor
timestamp: March 23, 2018, 09:17:28 am
content: Quote from: Halcyon on March 23, 2018, 06:44:39 amThe word 'hack' is used in many ways. Hollywood's 'hacker' has a different meaning than maker's 'hacker'.For the makers community, a hack is when someone look deeper into things or phenomenons, and understand or discover the inner and very basic properties of that 'something', rather than taking for granted the declared and mainstream properties of that 'something'. Doing so, the hacker can later hijack the main usage of that 'something' into a new and innovative way.Is there any other word for the above situation?

author: Halcyon
author_rank: Unknown
timestamp: March 23, 2018, 10:01:26 am
content: Quote from: RoGeorge on March 23, 2018, 09:17:28 amIt depends on how you interpret it I suppose. Me, personally would consider it (very) basic coding, manipulating, altering variables, WYSIWYG...Other's might consider it trolling or being ascript kiddie.I get that the OP is young and I certainly wasn't having a personal go at him. For a forum full of clever people, let us educate rather than pander to what society has become. If he (or anyone else) uses the term LOL etc... I expect people here to come down on them like a tonne of bricks :-)

author: BravoV
author_rank: Super Contributor
timestamp: March 23, 2018, 10:13:40 am
content: Not as advanced as above youngsters did ... testing ancient text hacks ....^PBTestingIt works !!!
uCurrent GOLD availability - Page 1
Forum section: electronics / general

author: BobInOhio
author_rank: Newbie
timestamp: September 19, 2017, 02:42:09 pm
content: Hi Dave,Just wondering if you would forecast when the next batch of uCurrent GOLD devices will be ready to ship - I'd like t purchase one. I checked a few times in the past several weeks and they're out of stock.Bob

author: EEVblog
author_rank: Unknown
timestamp: September 23, 2017, 10:22:49 pm
content: Parts are on the way to the assembler now.

author: jpep
author_rank: Contributor
timestamp: October 18, 2017, 11:03:32 pm
content: Quote from: EEVblog on September 23, 2017, 10:22:49 pm¿Any news or ETA? Seems to be out stock right now, not sure if I missed the previous batch...

author: WaveyDipole
author_rank: Frequent Contributor
timestamp: January 16, 2018, 05:14:23 pm
content: I wanted to buy one as well and tried to access the Eurpoean/Uk reseller, but the two links to SimonsElectronics and SparkyLabs (which takes you to SimonsElectronics as well) appear to be both broken - they just return a blank page.Do I need to order direct from Dave in Austrialia?Also does it come with leads to connect to the DMM or do I need to acquire some leads seperately?BTW, having recently run into the burden voltage issue while measuring current on my Fluke 45 DMM, I really enjoyed Daves well written article on the subject.

author: hirada
author_rank: Regular Contributor
timestamp: February 01, 2018, 02:52:14 pm
content: Same here. I was about to order one early december, when simonelectronics had a double digit number of those in stock, but decided to wait for a restock of the probemaster 8151 tips, which I assumed to be back in stock for x-mas.Hopefully the shop page will be updated with new instructions for us by cruel customs isolated lonely islanders here in europe as soon as they are back in stock.

author: SCR
author_rank: Contributor
timestamp: February 14, 2018, 09:04:53 am
content: Hi, is this still a supported product? I wanted to buy one but it's out of stock on EEV since i can't remember, and both the website for the distributors Sparkys Lab and Simons Electronics seems to have been removed.Thanks!

author: EEVblog
author_rank: Unknown
timestamp: February 14, 2018, 10:55:53 am
content: Yes, more will be assembled shortly.

author: furieux
author_rank: Newbie
timestamp: March 14, 2018, 08:02:25 am
content: Hello!Do you have any estimates when uCurrent Gold will be available to purchase?

author: furieux
author_rank: Newbie
timestamp: March 23, 2018, 08:41:38 am
content: It's back in stock and I hope it's not with the Murphy problem..
Breaking the Ledger Security Model - Page 1
Forum section: electronics / general

author: bitwelder
author_rank: Super Contributor
timestamp: March 20, 2018, 03:42:52 pm
content: https://saleemrashid.com/2018/03/20/breaking-ledger-security-model/Not much impressed by the general behaviour of the Ledger team

author: thm_w
author_rank: Super Contributor
timestamp: March 21, 2018, 07:26:18 pm
content: Good write up.The guy is apparently 15 years old as well, if they were smart they would offer him a job.

author: bitwelder
author_rank: Super Contributor
timestamp: March 21, 2018, 10:45:29 pm
content: By the way, the young guy took already the other h/w wallet for a spinhttps://saleemrashid.com/2017/08/17/extracting-trezor-secrets-sram/

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 22, 2018, 12:36:10 am
content: So if the magic security chip is a peripheral, and the MCU controls the USB and OLED, why couldn't malicious firmware just ignore the security chip altogether, and implement fake security functionality internally?Am I missing something ?

author: thm_w
author_rank: Super Contributor
timestamp: March 22, 2018, 09:15:20 pm
content: Quote from: mikeselectricstuff on March 22, 2018, 12:36:10 amIf you do this after the user has setup their account, etc. then you would not have access to the private keys on the secure chip (SE).If you do this before initialization, and feed the user a false seed or similar, that would be an option. But then I assume it would not authenticate via their web application. There must be some Ledger private keys in the SE as well that allow firmware updates and SE verification.https://support.ledgerwallet.com/hc/en-us/articles/115005321449-How-to-verify-the-security-integrity-of-my-Nano-S-Quote

author: Marco
author_rank: Super Contributor
timestamp: March 23, 2018, 12:23:23 am
content: This is why I trust open source tokens you can just program yourself more (of course physical access is an instant loss). It would be nice to have open source and tamper proof chips, but if I have to chose I prefer open source when doing business with this kind of company with so little skin in the game.It's different for my bank, then again if some hack happens against the hardware I got from my bank they'll generally just refund any money lost ... just like they did for skimming. I have more cause to trust them.
Anyone build a ROBOT suit/mobility/exo-skeleton for walking around ? - Page 1
Forum section: electronics / general

author: lordvader88
author_rank: Frequent Contributor
timestamp: March 20, 2018, 08:45:55 pm
content: I was watching a highschool robotics competition and they built big, fast, agile robots that could load up a stack of boxes inside it's frame . And a person could easily stand in this and drive around.So add some more human type arms and a scary looking helmet.No one with any sense would oppose you walking down the street then. (until the batteries wear down) But still, this is a great idea. And it's area is about the same as a mobility scooter.

author: Technobabble_
author_rank: Regular Contributor
timestamp: March 21, 2018, 07:54:53 pm
content: What are you specifically looking for? I used to work in a lab that was attempting to do an exoskeleton for paralyzed patients that, unlike current market options, is1. primarily mechanical2. low cost3. ease of manufacturerFor any medical device, you will have to do a heap of testing before approval. There are also big factors in how much assistance you need. You can get something like a REX suit that practically walks for you, or you can get something that is assistive first and foremost.
From Quanum ElectroDynamics to algebra of circuits - Page 1
Forum section: electronics / general

author: lordvader88
author_rank: Frequent Contributor
timestamp: March 21, 2018, 01:00:08 am
content: In QED I guess it's using Lagrangian and Hamiltonian style field equations, that don't look like the differential or integral version of Maxwell Eq's. (maybe I'm way wrong on that?)And then in basic electronics, it's just algebra for the most part.What is going on, math/nature, so deep
Space, the Next Trillion Dollar Industry (??) Maybe not so fast.. - Page 1
Forum section: electronics / general

author: Cliff Matthews
author_rank: Unknown
timestamp: March 27, 2018, 05:32:38 pm
content: Other than military benefit, I can't see peaceful investment prosperity ahead with another arms race heating up. Still it's fascinating to see what's flying around our little blue planet.*edit: It's as if these two guys are in-sync. Thunderf00t just listed a space video, but it's about NEO's (a bit gloomy for him).
Chinese Datasheets and Chip Makers - Page 1
Forum section: electronics / general

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 21, 2018, 05:45:25 am
content: i was looking for datasheet of SC34073A 12V to 5V dc dc converter IC, and i only can find it in chinese...http://www.datasheetspdf.com/pdf/846429/FUMAN/SC34073/1no english version that i can easily find. how long it will take for chinese to dominate the IC market? luckily they still follow the usual format so i can make something out of the datasheet...

author: tautech
author_rank: Super Contributor
timestamp: March 21, 2018, 07:31:30 am
content: Come across this a couple of times in Chinese made equipment. A datasheet is just a datasheet, all a fairly similar layout and not at all hard to decipher using Google translate.

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 21, 2018, 01:49:22 pm
content: i had similar bad luck on em78p153 mcu chip. 20 pages of text, diagrams and tables mixed, not an easy task copy pasting into google. even worst i have here sm6122 keyboard controller datasheet 9 pages all scanned in pictures.
How many eevblog videos have you watched? - Page 1
Forum section: electronics / general

author: Beamin
author_rank: Super Contributor
timestamp: March 17, 2018, 09:31:12 pm
content: I watched all of them right before his 1000 or 1024th episode. So 900 something. The earlier videos are still hard to find on youtube as you have to search for them. This was done over two and a half years of not working. Funny I never joined the forum until rather recently. His voice is way different from his days of book reviews and his live interviews have become much better. Although I liked the analog shut down video and the anechoic chamber EMI testing the best. There have also been a few videos where mail bag people sent in stuff thinking he was a free repair shop which was funny. I don't remember each video but if I watch the first minute I can remember if I have seen it.

author: Neilm
author_rank: Super Contributor
timestamp: March 20, 2018, 08:04:39 pm
content: I think I started watching around episode 25. I have watched most of them

author: FrankE
author_rank: Regular Contributor
timestamp: March 20, 2018, 09:18:35 pm
content: Heaps.

author: lordvader88
author_rank: Frequent Contributor
timestamp: March 20, 2018, 10:06:38 pm
content: I wish Dave did more explaining of what circuits actually do, how they work, rather than product reviews.

author: Ampera
author_rank: Super Contributor
timestamp: March 20, 2018, 10:22:10 pm
content: It's one of the single greatest regrets I have whenever I come to this forum that I don't watch enough of his videos. My YouTube consumption follows a "whatever comes my way" approach. I guess Dave's videos, even though I love them, and have seen at least 50-100 of them, just haven't been on my stream of videos consumed.

author: Edison
author_rank: Frequent Contributor
timestamp: March 20, 2018, 10:46:14 pm
content: Videos - Three more than them are produced

author: Red Squirrel
author_rank: Super Contributor
timestamp: March 21, 2018, 04:08:05 am
content: I started maybe several years back. I watch almost all of them.
New Probe Idea (?) - Page 1
Forum section: electronics / general

author: metrologist
author_rank: Super Contributor
timestamp: March 19, 2018, 06:46:03 pm
content: Am I too late?

author: tggzzz
author_rank: Super Contributor
timestamp: March 19, 2018, 06:59:02 pm
content: They are already available, albeit with a lump in the middle of the cable.If you want to remove the lump, you need more than just an idea - the devil is in the details.

author: ataradov
author_rank: Super Contributor
timestamp: March 19, 2018, 07:58:51 pm
content: And using plain USB (SATA?) connectors for passing high speed signals was also done in some logic analyzer.

author: Vtile
author_rank: Super Contributor
timestamp: March 19, 2018, 10:15:31 pm
content: picoscope 4444 uses D9 aka rs232 connectors. whose real type name always escapes from my head... Damn PCs and com-ports.

author: glarsson
author_rank: Frequent Contributor
timestamp: March 19, 2018, 11:18:22 pm
content: DE9 - D-shell of size E with 9 pins/sockets.Often incorrectly called DB9, but that would be the bigger size B normally used for 25 pins/sockets.

author: tautech
author_rank: Super Contributor
timestamp: March 20, 2018, 06:37:47 am
content: Quote from: metrologist on March 19, 2018, 06:46:03 pmYep, well at least for a LA that Defpom is gunna do a review on:https://youtu.be/XOK97Eb0luw?t=704

author: Marco
author_rank: Super Contributor
timestamp: March 20, 2018, 08:27:50 pm
content: Bitscope micro is probably closest, but I don't recall anyone building ADC/memory/control/isolation all into a small USB plug.

author: metrologist
author_rank: Super Contributor
timestamp: March 20, 2018, 10:31:29 pm
content: Naw, all the stuff is in the tip, and just the tip... the rest is done in DSP, like a software defined probe. The next evolution will be virtual probe.

author: ataradov
author_rank: Super Contributor
timestamp: March 20, 2018, 10:36:21 pm
content: There is not an ADC small enough to fit into a comfortable to hold probe. There is definitely no space for memory and other stuff.Without memory, you can probably get to 50 MSPS streaming in ideal conditions, and even that is questionable.Even if such tool is created, it will be a useless toy.
Low Speed USB device - Page 1
Forum section: electronics / general

author: ataradov
author_rank: Super Contributor
timestamp: March 20, 2018, 07:29:37 am
content: I'm looking for a Low Speed USB device for testing. I'm aware of software V-USB based implementations, but I'd really like to avoid them, if at all possible.Does anyone know of any commercial devices I can still buy (eBay/Amazon) that would be Low Speed for sure?

author: tooki
author_rank: Super Contributor
timestamp: March 20, 2018, 07:54:41 am
content: I’m quite sure that most computer mice are low speed USB. You actually see gaming nice advertise specifically that they are full-speed USB.

author: ataradov
author_rank: Super Contributor
timestamp: March 20, 2018, 07:55:50 am
content: Well, I've got a few, and they all are FS. Gaming people just need more bullet points, so they put irrelevant stuff on the box.EDIT: Although my keyboard is a low speed device. This would work fine.I also found old trackball, which is also LS. Now I'm all set.
Toyota Created A Robot That Shoots Hoops Better Than The Pros - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: March 17, 2018, 03:56:14 am
content: Ok, this one is just for fun:

author: lordvader88
author_rank: Frequent Contributor
timestamp: March 17, 2018, 03:59:41 am
content: Sports should be outlawed, it's a waste of time and energy. Same with most things people do. People should be in science/engineering work camps. Me included

author: raptor1956
author_rank: Frequent Contributor
timestamp: March 18, 2018, 12:47:15 am
content: Well when you lock the "robot" down to a single location, indoors with no or very little wind, and then tweak its motions until it hits dead center you would be surprised if it didn't make 100% of the shots. Back in the day the Detroit bad boys would have had some fun with the robot and when you next looked it would have been stripped of it's parts and sitting on concrete blocks!Brian

author: EEVblog
author_rank: Unknown
timestamp: March 18, 2018, 01:12:54 am
content: Lame.You would expect a robot to throw a more repeatable shot from a fixed location that a human. Make it move randomly and shoot a hoop every time and then I might be impressed.

author: xrunner
author_rank: Super Contributor
timestamp: March 18, 2018, 01:18:30 am
content: *** yawn ***It's standing still - it's a simple ballistic calculation for the computer. Move along folks - nothing to see here.

author: Lord of nothing
author_rank: Super Contributor
timestamp: March 19, 2018, 08:59:09 am
content: look like:
Server Outage during Live Stream - Page 1
Forum section: electronics / general

author: gnif
author_rank: Unknown
timestamp: March 19, 2018, 02:51:46 am
content: Hi Everyone.For those that were following the live stream and had problems accessing the forum. The website came under DDoS attack as Dave went to perform the draw for the Scope, across this period I had to block 50 IP addresses hammering the website with a combined total of over 10,000 requests per second.Those that are suggesting we use CloudFlare, we already do. CloudFlare should have prevented this (or at least blocked the worst offender at over 1000/sec requests), but it failed to do so and simply proxied everything through.If you have been inadvertently blocked by mistake (which means you likely cant read this anyway), please contact me with the IP address that has been blocked and I will lift the restriction.This information has also been posted to Twitter where you can DM me if you are unable to access the forum.

author: station240
author_rank: Unknown
timestamp: March 19, 2018, 03:35:09 am
content: Thanks gnifI thought it was suspicious the forum magically stopped working during the prize draw. Watching the replay as missed the livestream, also a lot of glitches in the audio sync around the time of the draw.

author: gnif
author_rank: Unknown
timestamp: March 19, 2018, 08:05:07 am
content: Quote from: station240 on March 19, 2018, 03:35:09 amDave's server was not involved in the live stream at all, any glitches there would have been YouTube or the encoding software... perhaps even Dave's internet was a little busy.
Online Oscilloscope Simulator - Page 1
Forum section: electronics / general

author: Gary350z
author_rank: Regular Contributor
timestamp: March 18, 2018, 04:40:44 pm
content: I found this online oscilloscope simulator.(Internet Explorer does not seem to work for this, use Chrome)Be sure to turn audio volume up.Sine wave example 1Sine wave example 2Lissajous example 1Lissajous example 2Lissajous example 3Lissajous example 4Oscilloscope simulator link:https://dood.al/oscilloscope/

author: Zero999
author_rank: Super Contributor
timestamp: March 18, 2018, 06:22:34 pm
content: It was very slow for me, running Firefox, on a Windows 10 PC. The CPU usage shot up and the whole thing was just unusable. I even struggled to close the tab down.I'll have to try it on my home PC, running PC Linux and a Chromium variant, but it's a much older/c slower machine, so don't hope for much.

author: Zero999
author_rank: Super Contributor
timestamp: March 18, 2018, 10:24:41 pm
content: It's much faster on my home PC, even though it's a much lower spec machine!An interesting toy but don't see the point really.

author: BrianHG
author_rank: Super Contributor
timestamp: March 18, 2018, 10:45:45 pm
content: WARNING: Slows down PC & hogs resources.WARNING: Even after closing down FireFox, hidden within Windows Task Manager, there is a hidden FireFox process still eating up a chunk of resources, we are talking hundreds of megabytes + occasional CPU cycle hits, which are never left go until you kill that Process, or reboot.WARNING: may be a form of virus.

author: Zero999
author_rank: Super Contributor
timestamp: March 18, 2018, 11:25:42 pm
content: Quote from: BrianHG on March 18, 2018, 10:45:45 pmOnly if you're running Winblows. It's perfectly safe to use, if you're using a proper operating system!

author: BrianHG
author_rank: Super Contributor
timestamp: March 18, 2018, 11:43:16 pm
content: So what you are saying is that scope web site should block windows users.

author: Zero999
author_rank: Super Contributor
timestamp: March 18, 2018, 11:49:15 pm
content: Quote from: BrianHG on March 18, 2018, 11:43:16 pmNo, just that it worked perfectly for me under a Slimjet, a Chromium based browserunder Linux, but poorly under Firefox on Windows 10.There's obviously a bug somewhere. What browser are you using? I will try Firefox under Linux.EDIT:It sort of works under Firefox and Linux. Better than Windows, but much slower than under Slimjet.

author: xrunner
author_rank: Super Contributor
timestamp: March 19, 2018, 02:42:48 am
content: Simulated the o-scope lighting very nicely.
FARNELL/E14 not even trying.. - Page 1
Forum section: electronics / general

author: fcb
author_rank: Super Contributor
timestamp: March 18, 2018, 05:41:36 pm
content: http://uk.farnell.com/stmicroelectronics/sg3525ap013tr/pwm-controller-400khz-5-1v-sop/dp/2762709?st=SG3525The picture speaks a thousand words.

author: Edison
author_rank: Frequent Contributor
timestamp: March 18, 2018, 07:16:13 pm
content: Strange E14 weird is the size of the bulb thread - Edison14 !!! Nobody asked me for a license......

author: hermit
author_rank: Frequent Contributor
timestamp: March 19, 2018, 02:34:18 am
content: I put together an order on the E14 site once but noticed I couldn't get a shipping estimate without entering a credit card number. I sent an email to them asking about that because it just seems like broken behavior. I never heard back, I never went back.
Anyone from BOISE, ID? - Page 1
Forum section: electronics / general

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 16, 2018, 11:22:53 am
content: PM me, I'll make it worth your while

author: raptor1956
author_rank: Frequent Contributor
timestamp: March 16, 2018, 10:56:06 pm
content: Quote from: Ice-Tea on March 16, 2018, 11:22:53 amWell I have worked there (Micron) and I live within 350 miles so lets hear it...Brian

author: Ampera
author_rank: Super Contributor
timestamp: March 16, 2018, 11:36:59 pm
content: Perhaps an explanation of what and why will drive more people to ask. Idaho isn't exactly known for their massive cities or huge population, so trying to match all these variables may be asking a bit too much.

author: sycho123321
author_rank: Regular Contributor
timestamp: March 17, 2018, 04:20:52 am
content: I live in Boise

author: Brumby
author_rank: Unknown
timestamp: March 17, 2018, 04:40:21 am
content: Somebody on the EEVblog knows something.They may not be in Boise, but there is something of interest there.No location needs to be "known" for anything to have a stash of goodies tucked away there.I'd be asking ......

author: Brumby
author_rank: Unknown
timestamp: March 17, 2018, 04:42:51 am
content: Quote from: TwoOfFive on March 16, 2018, 11:36:59 pmThis part of the EEVblog forum is public - and I think they want to keep information on whatever they've found limited to the members here.I am intrigued.

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 18, 2018, 04:07:35 pm
content: Nothing terribly mysterious about it. Need someone local to pick some T&M gear up
how to use csv log file with relative values in Excel - Page 1
Forum section: electronics / general

author: mcinque
author_rank: Unknown
timestamp: March 18, 2018, 11:30:47 am
content: I have a device that produces a log file with only relative values (see attachment), example:Code:Vertical Scale,50000VValue12.000,12.000,12.000,12.000,12.000,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,1614.0,29527,29527,29527,29527,29527,40265,40265,40265,40265,40265,40265,I don't know exactly how to use it in excel: I can create a graphic but I miss the relative scale so I see the samples but they are not correlated to a reference; do you have any advice how to use it (and why some manufacturers prefer to use relative scale instead absolute?)

author: PA0PBZ
author_rank: Super Contributor
timestamp: March 18, 2018, 02:10:30 pm
content: If these are relative values they must be relative to something, if you can't find the 'something' the values have no meaning.

author: Vtile
author_rank: Super Contributor
timestamp: March 18, 2018, 03:22:54 pm
content: So is that a tension per sample number shown in the csv-file ?

author: mcinque
author_rank: Unknown
timestamp: March 18, 2018, 04:03:12 pm
content: Quote from: PA0PBZ on March 18, 2018, 02:10:30 pmexactly.Quote from: Vtile on March 18, 2018, 03:22:54 pmShould be the exact value recorded by the meter (Volts)----------------I discovered the values are NOT relative.It's the scale that changes during the measure.So they are absolute but they become odd (without the separator) when the value goes up a certain limit.Take this log for example. It's a quick measure up to 240VAC and then down to 0.0.4790,<--- MAINS DISCONNECTED, 500mVAC0.4790,0.5330,24229,<--- MAINS CONNECTED, OF COURSE 242.29VAC24229,24229,<--- START LOWERING VOLTAGE TO ZERO63858,<--- 63.858VAC63858,16386,<--- 16.386VAC16386,42931,<---42.931VAC42931,42931,58169,<---58.169VAC58169,32437,14743,<---14.743VAC14743,25050,10469,0.5700,<--- ZEROIt seems impossible for me to understand "14743" is 14.747VAC instead 147.43VAC without knowing the measuring scenario behind, and this is of course something that a log file shouldn't do since it's designed to log unattended and for many hours.It's me that I'm wrong in something?EDIT: this seems dued to the autoscale function of the meter that changes automatically the recording scale of the log. The scale are 0-6V, 6-60V, 60-600V so that numbers has sense now. Putting the meter in manual mode will "fix" the issue.In my opinion, the meter should NOT be allow datalogging in auto range or at least should put in manual automatically.The values recorded has no sense without manual mode if the reading exits from the initial range.Are the other multimeters with datalogging doing the same than this (allowing autoscale in datalogging mode)?
Data logging ideas - Page 1
Forum section: electronics / general

author: metrologist
author_rank: Super Contributor
timestamp: March 19, 2018, 08:47:58 pm
content: I would like to have a few data loggers and have been working with Arduino. So far I just have one logging solar data to an SD card. It may work OK, but the SD card is a bit cumbersome to move around and won't survive all the fiddling for very long, and I'd like to get live access to the data.Another similar project is a temp/humidity monitor for bee hives.I guess an ideal solution would include wifi access and then some software running somewhere to process that data. I don't have any ideas on that side of it.I could probably stick some Arduino modules/code together and get it to send data to my wifi router.I was a little inspired by the better data logger thread, but need something a little more Arduino priced...

author: imidis
author_rank: Frequent Contributor
timestamp: March 19, 2018, 08:52:51 pm
content: Have you considered doing it via 433mhz rf?

author: metrologist
author_rank: Super Contributor
timestamp: March 19, 2018, 08:55:28 pm
content: I have a couple of those and will likely try that for the solar setup. I think the communication would not be that reliable, and I'd need to run a receiver all the time (maybe on my RPi). I was just looking at the ESP8266 module.

author: PlainName
author_rank: Super Contributor
timestamp: March 20, 2018, 04:34:15 am
content: Maybe an SDCard with built-in wifi?https://nerdtechy.com/best-wifi-sd-card
Police Helicopter Infrared - Page 1
Forum section: electronics / general

author: apelly
author_rank: Unknown
timestamp: March 20, 2018, 10:48:29 am
content: Discl: I did zero research...So, there's a helicopter circling/ellipsing/hanging about at the moment.I thought I'd take a look through my cell phone camera. I wondered if I'd see a cone of light as they track whoever they're after.But no. I see nothing.Are they using passive IR, or is something else happening that I haven't thought of?

author: jpanhalt
author_rank: Super Contributor
timestamp: March 20, 2018, 10:54:32 am
content: I suspect passive IR, which is at a wavelength much longer than your cell phone can detect.

author: apelly
author_rank: Unknown
timestamp: March 20, 2018, 11:11:08 am
content: If you see helicopters, put on your invisibility cloak; or your mylar thermal blanket...

author: Mr. Scram
author_rank: Super Contributor
timestamp: March 20, 2018, 11:26:12 am
content: Quote from: apelly on March 20, 2018, 11:11:08 amI think there's a lot of footage of people who hide and where heat starts leaking out after a while. You can't stay hidden forever, you inevitably heat up your surroundings.

author: Brumby
author_rank: Unknown
timestamp: March 20, 2018, 11:28:10 am
content: It's passive. Has to be.Illuminating a scene simply makes everything brighter. A suspect can simply avoid detection by not moving as they will be just as illuminated as the surroundings.By having a camera sensitive to the longer wavelengths, body heat shines like light bulb when the rest of the scene is cooler.PolAir in NSW has FLIR.

author: Zero999
author_rank: Super Contributor
timestamp: March 20, 2018, 11:33:42 am
content: Quote from: jpanhalt on March 20, 2018, 10:54:32 amYes, 9–14 µm is typical. You'll be lucky if your phone camera can see down to 1µm.

author: apelly
author_rank: Unknown
timestamp: March 20, 2018, 12:05:11 pm
content: Quote from: Mr. Scram on March 20, 2018, 11:26:12 amNo need to hide. You're literally invisible. It's a walk in the park.

author: Brumby
author_rank: Unknown
timestamp: March 20, 2018, 12:10:06 pm
content: So - you reckon you can "green screen" the Police's FLIR?Impressive.

author: apelly
author_rank: Unknown
timestamp: March 20, 2018, 12:30:50 pm
content: What'll really screw them is the yetti shaped hot water bottle footprints

author: Brumby
author_rank: Unknown
timestamp: March 20, 2018, 12:36:50 pm
content: You have thisstreak...()
How much electrical power does a large building use? - Page 1
Forum section: electronics / general

author: lmester
author_rank: Regular Contributor
timestamp: March 17, 2018, 06:19:55 am
content: At my workplace there's a new school building that's under construction and nearing completion. The power monitor system was commissioned a few days ago. Attached are some screen captures of it's web interface. I've been testing the system and learning how to use the software. The building has two main electrical service panels. Add the meter one and meter two plots together for the total. When the building HVAC system started up this morning, the peak power was about 350 Kilowatts! The total energy use for this Friday was about 3.1 megawatt hours!Would you like to have this electricity bill in your mailboxThe power monitoring system has 19 three phase power monitors connected using an RS-485 bus. Two monitors in the main electrical panels and 17 more in the sub panels. You can see some missing data points on the plots. The data logs also show random missing data points from the power monitors. After talking with tech support, it seems that the most likely problem is noise on the RS-485 bus. I agree with that. You have low voltage RS-485 network cables in the same electrical panel that has conductors carrying up to 150A at 277V. And, very little space to keep the network cables separated from the power cables. This may be an application where a fiber optic network would be a great idea.Also, this building is heated and cooled using electric heat pumps. The supply air to the heat pumps is preheated during cold weather with natural gas-fired air handling units. The energy use shown in these plots does not include the many BTU's of gas heat needed to preheat the air supplied to the heat pumps. Add this gas heat and it's even more amazing how much energy it takes to heat a large building!Finally, this school building is located in Brooke County West Virginia. It's a large building here. It's designed for about 1000 students. In a big city, this would be a small building. I can't even imagine how much energy a really large building could use.

author: Harb
author_rank: Regular Contributor
timestamp: March 17, 2018, 11:25:23 am
content: I guess its all relative, but the building here often draws 1500 to 2500 amps on the 415VAC 3 phase monitoring
Stephen Hawking's Favorite Places - Curiosity Stream. Free access until March 23 - Page 1
Forum section: electronics / general

author: Brumby
author_rank: Unknown
timestamp: March 17, 2018, 06:51:04 am
content: "At CuriosityStream, we will always be grateful that Professor Hawking passionately shared his enthusiasm for the wonders of the Universe with his fellow humans. In tribute, please enjoy the complete series of Stephen Hawking's Favorite Places through Friday, March 23rd."https://curiositystream.com/hawking/Very entertaining and worth the look. (I want that starship!)

author: tautech
author_rank: Super Contributor
timestamp: March 17, 2018, 07:40:50 pm
content: Certainly not a wasted hour or so.For a guy as smart as he was it's a pretty good look into his world in a way that most can comprehend.Thanks for sharing.
SMD Rework Station - Page 1
Forum section: electronics / general

author: jayhooked
author_rank: Newbie
timestamp: March 16, 2018, 04:40:03 pm
content: Looking for some advice on what would be a good starter rework station. Not looking to go into business just hobby gaming console repairs and such. Thanks in advance!!Sent from my SAMSUNG-SM-N920A using Tapatalk

author: metrologist
author_rank: Super Contributor
timestamp: March 16, 2018, 06:44:12 pm
content: I just got an Atten 858D hot air station- they are under several brand names, but all look similar. It's the same one Dave's been using for years. Then a Hakko 888D is a good soldering iron.

author: Iwanushka
author_rank: Frequent Contributor
timestamp: March 16, 2018, 07:14:01 pm
content: Quote from: jayhooked on March 16, 2018, 04:40:03 pmThen for hot air you need sonething like Quick 861DW its cheapest (300 $/€) and performs same/bettet than Hakko FR-810 (500-600€ its on discount because of FR-11 or ~1000$ in US) 858D is good for home made boards but if you have 8-12layers all copper it might take 20min vs 20sec [did that board started burning well before that BGA came off, this even can happen on 2 layer baords - depends on design], for Iron Hakko FX-951 clone, with orginal tips just search for T12 controller or something like that at any China shopPS. If by gaming console you ment something ancient and not PS3/XBox360 then 858D is fineEdit: miss-types stupid galaxy s6 after updates no longer has working spell check

author: jayhooked
author_rank: Newbie
timestamp: March 16, 2018, 09:58:33 pm
content: Sorry, what i meant to say is a bga rework station. My mistake. What i am looking to do is reball ps3 gpu and cpu chips. I have a pretty descent smd rework station. Looking to add another tool to my collection. I tried a reball and destroyed a good board.I really want something with a bottom pre heat.I would like to stay between the 200 to $500 range.

author: jayhooked
author_rank: Newbie
timestamp: March 16, 2018, 10:11:06 pm
content: Thank you for all of the helpful info!!Sent from my SAMSUNG-SM-N920A using Tapatalk
O/T - Please Help us Win - to score Brownie points with SWMBO - Page 1
Forum section: electronics / general

author: kolbep
author_rank: Frequent Contributor
timestamp: March 16, 2018, 01:35:32 pm
content: Hi Fellow Electronics Nuts.I know this is really off topic, but I know some of you will be willing to help out a fellow nut.SWMBO has entered our son into an Easter Competition, with the prize being a Family Photo Shoot.If I can help push this, and he wins, then I will get serious brownie points (and can probably end up bringing more of my goodies out the garage)....If anybody can help. It is really easy,all you have to do is go tohttps://southcoastherald.co.za/easter-bunny-selfie-hibiscus-mall/when there, search for Philippe Kolbe, and just give him a like. That is all you have to do....Here is what his entry looks like:Thank You All

author: The Soulman
author_rank: Super Contributor
timestamp: March 16, 2018, 02:52:45 pm
content: He is unlike-able from here.Come vote again tomorrow!.Good luck!

author: PA0PBZ
author_rank: Super Contributor
timestamp: March 16, 2018, 04:18:12 pm
content: I also got the 'come vote again tomorrow' but after it counted my vote...

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: March 16, 2018, 05:04:31 pm
content: I did a little digging into the code and here are my findings:If you can not vote it is because you are using adblock origin or similar. Somehow, the site gets handed an IP from the adblocker. If you deactivate it, you are able to vote. However, that behavior should open the door for an exploit, meaning you can just write a small script that shoves a bunch of votes to the server with random generated IPsI think I do not have time for that today, but maybe someone else wants to hack up something...

author: kolbep
author_rank: Frequent Contributor
timestamp: March 16, 2018, 05:20:56 pm
content: Thanks for the votes guys.Up to 27 already.The site does limit votes to 1 per public IP address per day.I do have a VPN into a few other places, so I am using them as well.I also found out that by deactivating my Cellphone Data, moving to a different tower area, and re-enabling it sometimes gives me a different IP, so I am also doing that.As well as having 2 seperate APN's (1 with my cellular carrier, and 1 with my ISP), and those also give me different addresses, so (besides Friends and Family), i am also utilizing all of those vectors.I am from a small town in South Africa, so (as you can see from the current votes), there does not seem to be too much competition
My workshop ^^ - Page 1
Forum section: electronics / general

author: raventheawesome
author_rank: Newbie
timestamp: March 15, 2018, 03:14:31 am
content: the front half of my apartment building use to be a Radioshack franchise and my landlord has let me use the old repair shop below it. I was able to set it up because of the amazing kindness of the members here. Especially ModemHead and PualAm who were over the top kind and sent me practically an entire electronics lab. I wanted to post a update for you guys. Sadly tho between midterms and going through the boxes and boxes of tech left behind by the radio shack I haven't had the time to really work on projects. So I figured I would post pictures of my workshopThank you all so much for all that you guys have done <3PS I have a special project planned for ModemHead and PualAm just waiting for a few parts to come from aliexpress ^^

author: Ampera
author_rank: Super Contributor
timestamp: March 15, 2018, 06:34:55 am
content: Is perfeckt!It looks like a less shit version of my basement, if my basement had a load of cool stuff in it (or a neat sign).

author: Muttley Snickers
author_rank: Unknown
timestamp: March 15, 2018, 06:57:52 am
content: Congratulations and nicely done.Your new setup appears to have all the makings of an electronics empire, well almost anyway. One word of advice though is that you alter or remove those cable/ lead hangers located above the Panasonic sign in the second picture, they appear to be mounted at a really nasty height and aiming to take somebody's eye out, which is the last thing anyone wants to see.

author: Brumby
author_rank: Unknown
timestamp: March 15, 2018, 07:12:17 am
content: Quote from: Muttley Snickers on March 15, 2018, 06:57:52 amI'd get half a dozen tennis balls, drill a hole and stick them on the end.

author: ModemHead
author_rank: Frequent Contributor
timestamp: March 15, 2018, 01:59:25 pm
content: That's a nice-looking workshop. So much space. Complete with a bottle of root beer! Glad I could help.

author: rhb
author_rank: Super Contributor
timestamp: March 15, 2018, 11:22:16 pm
content: If you have access to a small drill press, drill holes in a 1x2 at regular spacings to hold 16 penny nails spaced to the diameter of your cables. Your cables will thank you for being allowed to hang straight And you'll thank them for being more cooperative.
quantum 6000z mobility power chair - Page 1
Forum section: electronics / general

author: firehopper
author_rank: Frequent Contributor
timestamp: February 25, 2018, 06:14:41 pm
content: I was at a local pawnshop type place, and they had a power chair for $50, marked as is. turns out they had lost the accessories for it.. aka charger. its quite likely very hackable. as it uses a can bus to talk to the various parts and controllers. as of right now, the batteries were shot, so those are ordered. and needed a charger, also ordered.. It might make a interesting platform for robotics or other uses.. and if all else fails. the parts are worth some money.anyone able to find any hacking info? I did find some via google. searching for info on the qlogic 2 controll joystick.

author: Red Squirrel
author_rank: Super Contributor
timestamp: February 27, 2018, 01:05:33 am
content: Sounds like it could be a fun project. Maybe you can do a Tesla motor swap.

author: firehopper
author_rank: Frequent Contributor
timestamp: February 27, 2018, 11:59:25 pm
content: uhm, that sounds like major workwould need 2 motors and a controller and battery swap I think

author: firehopper
author_rank: Frequent Contributor
timestamp: March 01, 2018, 11:15:46 am
content: so anyway, batteries are here, and charged and hooked up, powered it up and the tilt motors and reclining motors do work, when I try and drive it it reports a error 107 charger inhibit error.. not sure what that means. and the web wasnt super helpfull in explaining it. might have to wait for the chair's charger to arrive before I worry about that error..but its promising..

author: firehopper
author_rank: Frequent Contributor
timestamp: March 09, 2018, 01:27:00 pm
content: lets see, update, had it moving. but it doesnt like being tilted.. so I'm now waiting for the programmer so I can set it up to use just one joystick and the main controller only. requries a can buss adaptor and a funky xlr plug to connect to the programming interface. I've learned a lot about the chair. and I can post images of the board inside the main joystick. has a arm, flash chip and a ram chip. so it might be running a os of some sort. want to take images of the insides of the other modules.

author: firehopper
author_rank: Frequent Contributor
timestamp: March 15, 2018, 10:36:51 pm
content: well got the interface, and connected it up, the inhibit setting was set active high instead of active low, so now its working and driving! now to change the settings so its not laggy or move like a drunken fish, soo many settings!
please remove - thanks - Page 1
Forum section: electronics / general

author: Herr R aus B
author_rank: Regular Contributor
timestamp: March 14, 2018, 06:27:18 pm
content: for some strange reason i am not allowed to remove my own posts - why? :-)

author: Bud
author_rank: Super Contributor
timestamp: March 14, 2018, 07:04:01 pm
content: Because it will take the replies to your posts out of the context.

author: Brumby
author_rank: Unknown
timestamp: March 15, 2018, 06:05:04 am
content: Quote from: Bud on March 14, 2018, 07:04:01 pmNot quite correct. A member IS allowed to remove their posts - and thisdoesresult in other members' posts losing context.HOWEVER a member is NOT allowed to remove thevery firstpost of a thread. This first post is an anchor point for the whole thread and if it was removed, then the whole thread would disappear.Having such power over other members' posts is not allowed.You can edit the first post down to a single character and you can do the same to the title - but that first post MUST remain.