hybridfree/eevblog-posts huggingface dataset:
How to find appropriate software for an oscilloscope??? - Page 1
Forum section: electronics / general

author: green
author_rank: Newbie
timestamp: November 22, 2018, 07:24:01 pm
content: HelloI have an oscilloscope that I lost it software and can no longer work with it. This model does not exist in the current company list and probably will not be produced anymore. I downloaded several similar software, but they do not work with my device. How can I download the appropriate software for my device??please guide me ......oscilloscope specs:Manufacturer : hantek4 channels15pf , 1megPC base (connect with LAN and USB to PC)Device model not written on it .serial No. : V43000524Thanks.

author: ebastler
author_rank: Super Contributor
timestamp: November 22, 2018, 07:34:05 pm
content: Please don't cross-post! (Multiple posts and threads on the same topic are not good netiquette. And two posts just five minutes apart, and in the same general forum, don't make sense at all.)As mentioned in the other thread, maybe a photo would help to identify your scope?

author: green
author_rank: Newbie
timestamp: November 26, 2018, 07:54:03 pm
content: oh...I'm Sorry. I did not notice the first post was posted. So I posted the second post.I sent the oscilloscope photos.Thank you.

author: ebastler
author_rank: Super Contributor
timestamp: November 26, 2018, 09:31:11 pm
content: Looks very close to a DSO3104 or DSO3204 to me:http://www.hantek.com/en/ProductDetail_2_134.htmlAlthough the input impedance on those is stated as 25pF. But otherwise, the non-A versions (no signal generator, no digital inputs) should look like your scope.The "DSO3000 software" may be worth a try?http://www.hantek.com/en/PagesFW_Vyyrj_3.html
Brisbane/Gold Coast Jan 17-23 2019 - anything on? Ham junk sale? - Page 1
Forum section: electronics / general

author: Drewbie
author_rank: Contributor
timestamp: November 25, 2018, 01:55:20 am
content: Hi team,I'm taking the family to the Gold Coast Jan 17-23 2019 and would be a lot happier if I could find some eclectic TE to lug back to Christchurch in my bag to make up for the 1 week of tweens constantly fighting around me.Are there any ham junk sales nearby at that time?Does the Carrara Market have any interesting stalls?Any surplus stores in Brisbane?Thanks for any info, to make my trip more bearable! Bonus points if there's a HP 5061A lurking there for me to grab. :^)Cheers,

author: LapTop006
author_rank: Unknown
timestamp: November 25, 2018, 04:58:55 am
content: Presumably you actually mean 2019, not 2018?

author: Drewbie
author_rank: Contributor
timestamp: November 25, 2018, 12:10:31 pm
content: Whoops! Fixed. Thanks!

author: LapTop006
author_rank: Unknown
timestamp: November 25, 2018, 01:30:22 pm
content: Quote from: Drewbie on November 25, 2018, 01:55:20 amWhile I think of it, if you're back in CHC the following week,linux.conf.auwill be in town then, I'll be there talking about my efforts building custom hardware and I'm sure I'm not the only one.

author: Drewbie
author_rank: Contributor
timestamp: November 26, 2018, 08:08:53 am
content: Yeah, I was going to volunteer for the conference but I get back 1/2 way through and they'll only take volunteers than can attend the whole thing. And the talks I want to see are all on days I can't make it. :^(
Test equipment used at NIST - Page 1
Forum section: electronics / general

author: schmitt trigger
author_rank: Super Contributor
timestamp: November 27, 2018, 04:31:12 pm
content: Here, in this wonderful Kibbke-balance image at NIST, we can get a glimpse of some of it.Including three old fashioned analog power supplies (At the right of Dr. Schlamminger)

author: eliocor
author_rank: Unknown
timestamp: November 27, 2018, 05:13:31 pm
content: they seems to be Kepco* ones, but I'm not completely sure...*) wonderful products: built like a tank (at least the several ATE models I own)

author: daqq
author_rank: Super Contributor
timestamp: November 27, 2018, 05:28:17 pm
content: I think that's a Vaisala PTB330 (or similar) barometer on the wall.

author: Mr. Scram
author_rank: Super Contributor
timestamp: November 27, 2018, 11:58:46 pm
content: I like the shrink wrap on the machine part on the table. That's some proper packaging right there.

author: schmitt trigger
author_rank: Super Contributor
timestamp: November 28, 2018, 01:58:31 am
content: You are correct, those 3 supplies are Kepcos.Rugged.
Get the old-style Digikey filter display back - Page 1
Forum section: electronics / general

author: LapTop006
author_rank: Unknown
timestamp: November 09, 2018, 09:12:41 am
content: If you don't like the recent design change of the filters on Digikey, it's an easy CSS hack to revert it.Code:/* Use your favourite CSS-modifying exstion to apply this to digikey.com and/or* country domains as appropriate.** I suggest "Stylus": https://add0n.com/stylus.html*/.filters-group-more-less {display: none !important;}.filters-group {display: block !important;flex-wrap: nowrap !important;height: auto !important;overflow: visible !important;overflow-x: scroll !important;overflow-y: hidden !important;white-space: nowrap !important;}The CSS file to load is alsoavailable here.Thanks toMike for finally prompting me to do this.

author: ataradov
author_rank: Super Contributor
timestamp: November 09, 2018, 06:26:02 pm
content: Any chance you can come up with a style that just makes "More Filters" be unfolded by default. I like new layout, but I hate to unfold it every time.

author: LapTop006
author_rank: Unknown
timestamp: November 09, 2018, 06:35:11 pm
content: Pull the linked version up, I'd already added a note on what to modify that should do that.

author: ataradov
author_rank: Super Contributor
timestamp: November 09, 2018, 06:37:58 pm
content: This is awesome. Thanks!

author: bugrobotics
author_rank: Regular Contributor
timestamp: November 24, 2018, 08:24:16 pm
content: Awesome! Thanks!

author: amyk
author_rank: Super Contributor
timestamp: November 24, 2018, 09:12:42 pm
content: I hope whoever decided to make these stupid changes comes here and sees this. Their incessant urge to hide things and remove useful functionality is maddening.
Monochrome Pattern Flashing LEDs - Page 1
Forum section: electronics / general

author: Cyberdragon
author_rank: Super Contributor
timestamp: November 24, 2018, 06:50:18 pm
content: I was in the dollar store today and saw a little Christmas decoration with three red LEDs that flashed and cycled through different patterns. However, on closer inspection, they were integrated controller LEDs. They must have a very low dropout voltage, as they were very dim from being left on all the time, and all three were powered from two or three LR44 cells.Any ideas what those were? There is a chance they were just RGB LEDs being undervolted, but IDK, didn't seem like the pattern made sense for that (no long dead spots).
Probe Master leads! - Page 1
Forum section: electronics / general

author: Terry01
author_rank: Frequent Contributor
timestamp: November 24, 2018, 03:45:19 pm
content: I received my 2nd set of Probe Master leads today for my 289. Simon the moderator has them in the UK and delivery was real quick! I've been looking for a set for ages!I got my 1st set a few days ago with my new 121GW and was well impressed with them! I never thought i'd go past the fluke leads with the retractable guards but I can honestly say the probe masters are a fine match, if not better!Where the probe masters come into their own is when you are probing PCB's, especially SMD stuff, they really are super sharp, get a good contact and fit really well in your hand. The leads themselves are super soft and flexible too so no tangles.I still love my fluke leads but they are no match on the SMD stuff so the probe masters will be my "goto" set for all my meters.I have no affiliation or anything like that to Simon the moderator but feel i must say "i was well impressed how quick the probe master leads I got from him arrived and his prices are fair". I would highly recommend his services for anyone in the UK.

author: JackJones
author_rank: Regular Contributor
timestamp: November 24, 2018, 03:51:57 pm
content: I bought Probe Master leads for my €12 meter recently. It seemed like a crime to use so expensive leads on a crappy meter, so I went and got myself Brymen BM867S. So in a way the Brymen is an accessory for the leads!I got the second most expensive kit with a couple attachments. I recently found out they also make banana plugs for them as well, I wish those were included in the kit.

author: Terry01
author_rank: Frequent Contributor
timestamp: November 24, 2018, 03:59:43 pm
content: The Brymen is a good match for any decent set of leads. I have the 867s too and it's another great meter for sure! I've had mine a while now and can't think of a time when I felt it let me down or anything like that.
Ryzen 1700 is £150 including postage in BF sale - buy now or wait a bit? - Page 1
Forum section: electronics / general

author: splin
author_rank: Frequent Contributor
timestamp: November 23, 2018, 09:10:59 pm
content: From Scan.co.uk:https://www.scan.co.uk/products/amd-ryzen-7-1700-s-am4-8-core-16-thread-30ghz-37ghz-turbo-16mb-cache-65w-cpu-retailSeems like a very good deal; but I could hang on a for a while. Will I be kicking myself in three months if I miss it or are prices likely to fall further soon enough? How genuine are these types of BF deals?Does the 1700 support ECC memory?

author: bd139
author_rank: Super Contributor
timestamp: November 23, 2018, 09:11:47 pm
content: I'd wait. Shit is always cheaper after Christmas.

author: wraper
author_rank: Unknown
timestamp: November 23, 2018, 09:20:23 pm
content: It's a very good price, cheaper than in US. Unlikely to get cheaper than this in near future.

author: splin
author_rank: Frequent Contributor
timestamp: November 23, 2018, 11:28:58 pm
content: Ok 50:50 so far. But what might be the motivation for such a big discount? Usually it's because:a) They are clearing out older models as newer ones are about to replace them, orb) To clear out excess unsold stock, orc) Because the previous pricing was artificially inflated to make the sale price look impressive.d) As a loss leader to induce punters to buy other, more profitable lines.I'm not sure any of these apply here except perhaps the last. Any ideas?

author: Mr. Scram
author_rank: Super Contributor
timestamp: November 24, 2018, 12:46:38 am
content: Quote from: splin on November 23, 2018, 11:28:58 pmThe 1700 has been superseded by the new generation's 2700. It's still a very nice chip. The price to performance ratio is probably better than with the new stuff.
hantek oscilloscope - Page 1
Forum section: electronics / general

author: green
author_rank: Newbie
timestamp: November 22, 2018, 07:28:41 pm
content: Hi..How to find appropriate software for a hantek oscilloscope?I have an oscilloscope that I lost it software and can no longer work with it. This model does not exist in the current company list and probably will not be produced anymore. I downloaded several similar software, but they do not work with my device. How can I download the appropriate software for my device??please guide me ......oscilloscope specs:Manufacturer : hantek4 channels15pf , 1megPC base (connect with LAN and USB to PC)Device model not written on it .serial No. : V43000524Thanks.

author: ebastler
author_rank: Super Contributor
timestamp: November 22, 2018, 07:31:37 pm
content: I assume this is a USB scope, and you are looking for the Windows software to control it?Could you post a photo?And, please do not post the same question multiple times in different threads.That is frowned upon in this forum.

author: Rick Law
author_rank: Super Contributor
timestamp: November 22, 2018, 08:21:46 pm
content: Where? From Hantek is probably best:http://www.hantek.com/en/PagesFW_Vyyrj.html

author: ebastler
author_rank: Super Contributor
timestamp: November 22, 2018, 09:32:17 pm
content: I understand green's problem to be that he does not know the model number of his scope, hence does not know which software to download. Apparently they are all (?) different, and according to his post, he tried a few without success.

author: Microcheap
author_rank: Frequent Contributor
timestamp: November 22, 2018, 11:12:02 pm
content: Try to contact the Hantek support directly (there is an email on their web site), they may take a few days to answer, but I always got I reply from them.They have a support forum as wellhttps://www.eediscuss.com/forum.phpbut I've never used it.

author: daybyter
author_rank: Frequent Contributor
timestamp: November 23, 2018, 12:24:37 am
content: If it's a USB model and you connect it to your PC, it will register with some vendor and device id. You can use them to guess the model of your scope.
QEI module of PIC18F4431 - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: January 26, 2011, 02:46:45 pm
content: I've a motor with an incremental encoder. The resolution of the encoder is 2000ppr. The A-B-IDX of the encoder is connected to the QEI module input of PIC18F4431. Since the QEI module counts at every edge (rising and falling), can I say that the output of the QEI module will be from 0-7999?http://ww1.microchip.com/downloads/en/devicedoc/39616b.pdfThanks.

author: ANTALIFE
author_rank: Frequent Contributor
timestamp: November 22, 2018, 04:26:39 am
content: Give it a go and see what happens ;^)

author: H.O
author_rank: Frequent Contributor
timestamp: November 22, 2018, 05:57:25 am
content: It depends on how you set up the QEI module.It can either wrap around to zero when it sees the index pulse OR when it hits an arbitrary count.If you set it up to wrap around at 7999 then it will do so no matter how many cycles per rev the encoder actually has.If you set it up to wrap around on index then it will do so no matter how many cycles per rev the encoder has.It can also be set to either 2x or 4x decoding so if your encoder has 2000 lines or cycles per rev the module will count either 4000 or 8000 counts per rev.
MAX14483 -- should I use it? - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: November 21, 2018, 07:25:37 pm
content: In a project I'm working on, I have 6 channels to isolate -- 3 for I2S (SCLK, LRCK, SDAT), 3 for I2C (SCL, SDA-force, SDA-sense).All voltage levels are 1.8V, and I only have up to 2.0V supply in the digital domain.The 2.0V VDD_max dictates only a very few isolators can be used. Also, 6-ch isolators are not common either.This design is also heavily power constrained, so every single mW should be saved.PCB size is at premium. Only SSOP/MSOP/QSOP or even better, QFN/DFN, are accepted. SOP/SOIC are not options.With all limitations, MAX14483 becomes the only apparent option.Keep in mind, that power is at premium. Those other isolators have considerably higher power consumption (13mA vs 1.3mA), and I need a charge pump, which effectively doubles the input current.Now the question: everyone hates Maxim. Should I risk designing with this chip, or should I consider introducing a 2.3V rail for ISO7762 or a 2.4V rail for Si8662?If so, should I consider to buy a bunch of them in advance before it runs out of stock semi-permanently?

author: langwadt
author_rank: Super Contributor
timestamp: November 21, 2018, 07:35:34 pm
content: if you can buy all you need in advance I don't see a problem, if you want to be able to buy more later then with Maxims history and only 80in stock at Digikey and 10 weeks leadtime I'd be reluctant

author: Gribo
author_rank: Frequent Contributor
timestamp: November 21, 2018, 09:23:37 pm
content: From my past experience with Maxim, their lead times are reliable, but a bit on the long side. 16 to 22 weeks on some of their less common parts.
Is there an ETA for the AoE X-Chapters? - Page 1
Forum section: electronics / general

author: apis
author_rank: Super Contributor
timestamp: May 17, 2018, 08:48:18 pm
content: It's been 3 years since the Art of Electronics 3rd edition was released. A lot of the interesting parts were moved to a new separate book called the x-chapters however. It was almost finished and should be released "soon".Have there been any news since saying when it can be expected? (I hope they didn't mean GRRM soon!)

author: bd139
author_rank: Super Contributor
timestamp: May 17, 2018, 09:21:35 pm
content: Based on the last interval, 2035

author: apis
author_rank: Super Contributor
timestamp: May 17, 2018, 09:59:48 pm
content: Hehe. Well, the best estimate I could find with google before was "We expect it'll be out in a year or two" from Feb 2015.

author: bd139
author_rank: Super Contributor
timestamp: May 17, 2018, 10:21:35 pm
content: Yeah. Might be worth dropping them an email. They tend to reply after a couple of weeks.It is rather frustrating seeing the cross references that go nowhere

author: perdrix
author_rank: Frequent Contributor
timestamp: November 21, 2018, 05:37:42 pm
content: Cambridge University Press said today (21 Nov 2018) that the manuscipt is due March 2019, and the book will publish about 6 months later.HtH Dave

author: bd139
author_rank: Super Contributor
timestamp: November 21, 2018, 06:20:39 pm
content: Cool stuff. Thanks for update.
Real or fake hakko fx888  - Page 1
Forum section: electronics / general

author: Steven_
author_rank: Newbie
timestamp: November 20, 2018, 08:14:50 am
content: I bought this on ebay second hand i think its real but it keeps bothering me if its fake if anyone has a way to check if its real it will help me sleep better

author: JackJones
author_rank: Regular Contributor
timestamp: November 20, 2018, 08:42:44 am
content: Probably the best way to tell would be to open it up and compare the insides with photos from an original. There should be plenty of those around.

author: Steven_
author_rank: Newbie
timestamp: November 20, 2018, 09:11:02 am
content: I i opened it up twice now it looks real but it has no aprove number on the bottom

author: Terry01
author_rank: Frequent Contributor
timestamp: November 20, 2018, 09:15:25 am
content: The chip on the board is the best way to tell if it's genuine or not. The board on yours will be little different to the one in this video but it should give you the general idea. Hope it helps.

author: Steven_
author_rank: Newbie
timestamp: November 20, 2018, 09:23:00 am
content: Yeah everything looks like it should just the aprove number missing

author: floobydust
author_rank: Super Contributor
timestamp: November 20, 2018, 09:54:36 am
content: I have a real FX888, the labels are the same and match yours.It's kind of an oddball station, Hakko only sold it for a few months before the FX888D came out.edit: FX-888 release Q1 2011, then FX-888D released Q4 2012, so the station had a 2 year run.

author: Steven_
author_rank: Newbie
timestamp: November 20, 2018, 10:35:07 am
content: Thanks for the information lol thats exactly what i wanted to hear

author: rsjsouza
author_rank: Super Contributor
timestamp: November 20, 2018, 07:35:00 pm
content: Quote from: floobydust on November 20, 2018, 09:54:36 amMonths? A few years at least. I bought mine about a year after Dave posted his video on hacking the FX888, and reports here are about one year prior to that video (I got mine just a few weeks after the FX888D release).

author: floobydust
author_rank: Super Contributor
timestamp: November 20, 2018, 08:08:28 pm
content: Quote from: rsjsouza on November 20, 2018, 07:35:00 pmYou're right, I was confusing the FX-951, at the time I'd bought a bunch of stations from the Hakko distributor Q3 2010 and I got 936 and FX-888's. He gave an option to buy FX-951's.I find the FX-888D was announced Q4 2012, so the FX-888 had a two year run.

author: maginnovision
author_rank: Super Contributor
timestamp: November 20, 2018, 08:20:16 pm
content: You can also email hakko. I've always found them helpful and prompt.
Deconstructing The Xbox Security System - Page 1
Forum section: electronics / general

author: lordvader88
author_rank: Frequent Contributor
timestamp: November 21, 2018, 04:13:00 pm
content: Deconstructing The Xbox Security SystemI love talks like these. It occurs to me at 8:37 in why not just add a drill/router stage and cut out the port that they added on the PCB. But I guess the traces would still be there so, yeah IDK

author: tooki
author_rank: Super Contributor
timestamp: November 21, 2018, 05:05:24 pm
content: Wrong video? At 8:37 this video has nothing at all to do with xbox.

author: lordvader88
author_rank: Frequent Contributor
timestamp: November 21, 2018, 07:41:18 pm
content: I wondered why that image looked wrong, I fixed the link, thanks

author: james_s
author_rank: Super Contributor
timestamp: November 22, 2018, 12:00:19 am
content: I remember sitting in the meetings leading up to the launch of the original xbox where they talked about the security features. They were quite confident at the time and it caused a bit of a shock when someone cracked it wide open within a week or two of it hitting the streets.Personally though I think the fact that it was cracked made it a far more appealing platform, the mods turned the xbox into what it should have been in the first place and while I had no part whatsoever in that happening, I was quietly pleased when it did.
Bought a 121GW today! :) - Page 1
Forum section: electronics / general

author: Terry01
author_rank: Frequent Contributor
timestamp: November 15, 2018, 04:31:59 pm
content: It's coming from Germany I think, so we'll see how long it takes to get to the UK. I was looking through my other meters to see which one I will sell to make room for it, and came to the conclusion "I will just keep them all" LOL

author: Terry01
author_rank: Frequent Contributor
timestamp: November 20, 2018, 09:11:16 am
content: Woohoo!!DHL sent a mail saying "my meter will be delivered today between 11.30am & 12.30pm" ...… I am booked in to get my monthly infusion for Multiple Sclerocis at 11am which usually takes at least 2-3 hours!The MS will just have to wait! I'll get there after my new meter is delivered.... TEA is boss.... MS is a punk!The MS nurse will do a bit ofthough... My oh My what kind of TEA would I be if I let the delivery wait right??

author: Terry01
author_rank: Frequent Contributor
timestamp: November 20, 2018, 05:20:35 pm
content: Ordered 15th @ 2pm and here 20th @ 11.30 am..... Germany to the UK! Not bad at all i'd say! The 87v I ordered at the same time from Mexico isn't even showing as posted yet! HMMMmm!
Youtube down again - Page 1
Forum section: electronics / general

author: raptor1956
author_rank: Frequent Contributor
timestamp: November 18, 2018, 11:13:55 pm
content: I have a youtube stream running and it seems to be working OK, but if I try to load another tab in Chrome with YT all I get is a blank page. This feels similar to a few weeks ago.Brian

author: raptor1956
author_rank: Frequent Contributor
timestamp: November 18, 2018, 11:27:09 pm
content: Looks like its back up for now. Weird, for a time a blank page would load with no videos. Then, it would load the homepage but there was a message about a bunch of trained monkeys and some text babble after that. Then I could load a video and the video would play but there was only the video window with no text of any kind -- just the video window. And now its back.Thankfully this even was only about 20 minutes whereas the last one was a couple hours.Brian

author: Red Squirrel
author_rank: Super Contributor
timestamp: November 18, 2018, 11:48:27 pm
content: Just had it happen too. Thought it was just me haha.

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: November 19, 2018, 02:26:43 am
content: No problems here

author: raptor1956
author_rank: Frequent Contributor
timestamp: November 19, 2018, 09:32:39 pm
content: Interestingly, when this happened I Googled "Youtube Down" and found a page that provides a heat map of outages -- there were many places showing some heat.Given the amount of bandwidth YT users eat I guess it's no surprise this happens with some frequency.I sometimes watch a few train cams that stream all the time and it's not uncommon for the streams to stutter or freeze in the 6PM - 11PM time period owing to the huge streaming activities (Netflix etc) during that period. During that period streaming 4K content from YT is usually not possible and you have to downgrade to HD or worse. I think this will only get worse as more people stream and the ISP's, now unburdened with open access rules, can do as they please.Brian
Best choice for PCBA and Drop Shipping to sell OSHW? Elecrow, Seeed, ..., ? - Page 1
Forum section: electronics / general

author: pieterc
author_rank: Newbie
timestamp: November 19, 2018, 04:11:34 pm
content: Hi everyone!I am considering an Asian company for parts procurement, PCB Assembly and Drop Shipping (you email them the invoice and they ship the order on your behalf; for example, seehttps://www.elecrow.com/drop-shipping-service.html)I have researched and found Seeed, Elecrow and Makerfabs, but I am still unsure. It is a matter of quality and trust with conflicting requirements: good price, reliable assembly, no fake parts, design not being shared and sold on Aliexpress, etc.Who do you use and would you recommend?Thanks in advance,Pieter
Libraries - Page 1
Forum section: electronics / general

author: hamster_nz
author_rank: Super Contributor
timestamp: November 18, 2018, 10:31:01 pm
content: I went to the City library over the weekend, to see if any of the books would be of interested.In a 5-story library, there was one half-filled shelf on Electronics. Standout was two editions of "Practical Electronics for Inventors", a book on how to correctly wire audio and video cables (more on the physical side, stripping, stress relief and so on), and a few Arduino project books.At least it was a step up from local book stores, where as a topic electronics doesn't exist.I was somewhat underwhelmed, to say the least... what are your local libraries like?

author: nctnico
author_rank: Super Contributor
timestamp: November 18, 2018, 11:36:58 pm
content: Last time I went with my son to look for English books to read for his final year. They didn't had any books written by PG Wodehouse.?

author: rdl
author_rank: Super Contributor
timestamp: November 18, 2018, 11:51:02 pm
content: I haven't been in a library since I was going to college over thirty years ago. I just checked and where I live has a fairly new city library built in 2009. Maybe I will journey over there and check it out sometime soon.

author: cdev
author_rank: Super Contributor
timestamp: November 19, 2018, 02:56:01 am
content: Pretty good, and some of them are always crowded too. Which I think is a very good sign.I grew up going to some of these libraries. Read lots of electronics books and magazines while visiting them. Long before the Internet there were libraries.Now libraries globally arefacing a serious threat.Quote from: hamster_nz on November 18, 2018, 10:31:01 pm

author: steve30
author_rank: Frequent Contributor
timestamp: November 19, 2018, 06:43:30 am
content: Our larger libraries have some engineering and electronics books, but not a lot. Smaller libraries won't have any.When I was a student, I found the college libraries were far better for engineering books. They had many shelves worth.
Messerschmitt Bf-108  Restoration Project - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: November 18, 2018, 08:33:22 pm
content: This is pretty amazing for those interested.The design and build quality when they were originally built and the amount of time and effort and attention to detail that goes into the restoration is amazing.Part 1 in is a 2 part video;Here is their YouTube channel;https://www.youtube.com/user/KermitWeeksBlogVideo/videosThey have a lot of aviation and restoration content but you can follow this project there if you are interested.Already a few videos of the project.-k

author: Stray Electron
author_rank: Super Contributor
timestamp: November 18, 2018, 09:15:46 pm
content: Very cool. I'm planning on visiting Fantasy of Flight in December so maybe I'll get to see it in person.

author: 0culus
author_rank: Super Contributor
timestamp: November 19, 2018, 12:54:21 am
content: I love watching Kermit Weeks Hangar on youtube. It makes my TEA seem insignificant in comparison!
ebay International Item Visibility - Page 1
Forum section: electronics / general

author: Echo88
author_rank: Frequent Contributor
timestamp: November 17, 2018, 01:21:36 pm
content: Is it still the case that many items which are sold in the US arent visible to foreign ebay-sites/non-US-based-users?For example: if i use ebay.com or ebay.de then i wont see all offered items from the US?Im asking because i often see items here on the forum bought from ebay in the US, but cant see those recently sold items via the Advanced search - Sold Listings.Can someone confirm and offer a solution or am i just being paranoid?

author: Ampera
author_rank: Super Contributor
timestamp: November 17, 2018, 01:23:32 pm
content: You could try going to ebay.us (might give you the US specific site).As for me in the US, I do see international listings quite often, but it's possible listings that do not ship to your country are omitted (as it's fairly useless to see a bunch of stuff on ebay you can't even have delivered)

author: Echo88
author_rank: Frequent Contributor
timestamp: November 17, 2018, 01:26:38 pm
content: Even if the seller wouldnt sell internationally, you could use a reshipper-service or someone in the US you trust to buy it and ship it to you.

author: JackJones
author_rank: Regular Contributor
timestamp: November 17, 2018, 01:48:56 pm
content: I'm 99% sure it is still the case.

author: factory
author_rank: Super Contributor
timestamp: November 17, 2018, 01:50:31 pm
content: Yes it's been like that for some time.And to confirm I just checked one of my usual searches (with settings; newly listed & search in description) with both ebay.com and the site I use to find the missing listings (Goofbid.com set to US in right corner, or you will be disappointed), Ebay gave 89 results & Goofbid 112 results.I suspect most of the hidden listings also have the "international communication blocker" too, you can't even send helpful information.Research is another legitimate reason you may want to find these listings, quite important for things that are actually rare.David

author: glarsson
author_rank: Frequent Contributor
timestamp: November 17, 2018, 04:52:10 pm
content: Quote from: Echo88 on November 17, 2018, 01:26:38 pmEven if postage is only given for the US (as an example) you could contact the seller and ask. I have done this several times and the answer has always been "of course, I'll calculate the shipping".
Question about RAM in a system. - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: November 11, 2018, 03:35:51 pm
content: I was looking through some questions for computer technicians on of the questions is:"Design (draw) the RAM of a computational system with a total size of 64M positions with a 32-bit size for every position.The RAM must be divided in 4 regions of 16M positions each. For the design use 16Mx8 RAM chips and suitabledecoding circuit."It seems quite a strange question for PC technicians.How would you answer it?Alexander.

author: Benta
author_rank: Super Contributor
timestamp: November 11, 2018, 04:22:08 pm
content: What's strange about it? This is quite normal practice for an embedded computer design.The answer is not hard, we're talking about an array of 4 x 4 memory chips, each sized 16M x 8. Address decoding is not hard, you just need 4 chip selects.

author: TK
author_rank: Super Contributor
timestamp: November 11, 2018, 05:46:07 pm
content: It might not be strange if you are repairing vintage 8-bit computers, but it is not needed for modern PC

author: GeoffreyF
author_rank: Regular Contributor
timestamp: November 11, 2018, 06:00:58 pm
content: It is not strange at all. In fact, it's really easy. Just try.

author: Benta
author_rank: Super Contributor
timestamp: November 11, 2018, 07:55:25 pm
content: Quote from: TK on November 11, 2018, 05:46:07 pmYour view seems a bit limited. There are lots of other computers than PCs in the industrial world.

author: firewalker
author_rank: Super Contributor
timestamp: November 11, 2018, 09:12:14 pm
content: Thanks you. All of you.

author: firewalker
author_rank: Super Contributor
timestamp: November 11, 2018, 09:36:24 pm
content: A typical 16Mx8 RAM will have 4 banks of 4096 pages and 1024 rows?

author: David Hess
author_rank: Super Contributor
timestamp: November 12, 2018, 10:46:16 pm
content: Quote from: TK on November 11, 2018, 05:46:07 pmModern PCs do exactly the same thing. Memory on a single channel is arranged in multiple ranks with individual DIMMs having 1, 2, or 4 ranks each. Decoding of some address bits determines which rank is selected.

author: firewalker
author_rank: Super Contributor
timestamp: November 18, 2018, 11:34:13 am
content: Is something Like this correct?

author: Benta
author_rank: Super Contributor
timestamp: November 18, 2018, 02:19:44 pm
content: In principle yes, but I'd redraw it a bit. The 11-bit address bus and the 2-bit bank select bus is the same to all the chips, so I'd draw it like the data bus is drawn. It has to go through the decoder for multiplexing of course (depends on the CPU).RAS and CAS are probably also the same. Only the chip selects need to be decoded.
Everyone's voltage and resistance standard will shift today? - Page 1
Forum section: electronics / general

author: apis
author_rank: Super Contributor
timestamp: November 16, 2018, 12:31:10 am
content: So, if I understood this right then everyone's voltage and resistance standards will be off by about 0.1 ppm later today.TLDW: The new kilogram standard will fix Planck's constant, this affects the volt (and ohm) because it is already defined using another fixed value of the planck constant (it was fixed before but now they have a better estimate of what it should be so it will be redefined to the new value when they redefine the kg.)

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 16, 2018, 02:43:06 am
content: https://en.wikipedia.org/wiki/Proposed_redefinition_of_SI_base_units

author: Gyro
author_rank: Super Contributor
timestamp: November 16, 2018, 10:21:21 am
content: https://www.eevblog.com/forum/metrology/time-to-get-all-our-instruments-recalibrated/

author: apis
author_rank: Super Contributor
timestamp: November 17, 2018, 02:22:27 am
content: So, apparently the change doesn't take effect until 20 May 2019.

author: German_EE
author_rank: Super Contributor
timestamp: November 17, 2018, 09:39:54 am
content: Five digit DVM, no change noted although I shall continue to keep watch just in case.
FYI | RECALL | Fluke T110, T130 and T150 - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: November 22, 2018, 02:02:44 pm
content: For those having one, maybe check this out.http://download.fluke.com/tpole-recall/customer/Recall-TPOLE-customer-Letter-EU-UNITED-KINGDOM.pdf
The KG, Mole, Kelvin and Ampere are being redefined with a new Plank's constant. - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: November 16, 2018, 03:12:56 am
content: This also means the Volt and Resitance will now be updated a little as well. Now all the metrology would need to update their references...Yes, a volt will change within around 1 part in 10 million, right up in the edge of the metrology nut's corner...https://youtu.be/c_e1wITe_ig?t=327

author: Mr. Scram
author_rank: Super Contributor
timestamp: November 16, 2018, 03:25:36 am
content: See the existing thread here:https://www.eevblog.com/forum/metrology/time-to-get-all-our-instruments-recalibrated/msg1968140/#msg1968140

author: BrianHG
author_rank: Super Contributor
timestamp: November 16, 2018, 03:44:18 am
content: Quote from: Mr. Scram on November 16, 2018, 03:25:36 amWith a title like 'Time to get all our instruments recalibrated' in the 'metrology' sub forum is going to give someone a heart attack.
Which ic manufacturer logo is this? Partially scratched off. - Page 1
Forum section: electronics / general

author: HSPalm
author_rank: Regular Contributor
timestamp: November 14, 2018, 03:43:20 pm
content: This one is partially scratched off the IC. I know the IC takes RGB parallel video data, MJPEG compresses it and writes it to an SD card. I have search for hours for QFP64 chips that does MJPEG compression but no results. I have searched for the same product and similar products to see if a lesser scratched version exists.I have looked through all the IC logo webpages, and also view manufacturers by logo on lcsc.com. Still I think the small part of the logo looks familiar. Maybe the round part reminds me of Prolific.Anyone here recognizes it? Appreciate the help.There are many variants of the product using the same chip, if you search for "FPV DVR". But in most cases the IC is completely without logo (not scratched).

author: NegativeONE
author_rank: Contributor
timestamp: November 14, 2018, 04:03:52 pm
content: This is probably a logo that you are looking for:

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: November 14, 2018, 10:12:38 pm
content: Quote from: HSPalm on November 14, 2018, 03:43:20 pmSyntek Semiconductorhttp://www.stk.com.tw/

author: HSPalm
author_rank: Regular Contributor
timestamp: November 15, 2018, 12:05:37 am
content: Thank you so much guys!

author: HSPalm
author_rank: Regular Contributor
timestamp: November 15, 2018, 09:27:05 am
content: How did you go about finding it? Just by recognizing it?

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: November 15, 2018, 11:35:20 am
content: Quote from: HSPalm on November 15, 2018, 09:27:05 amit took a little creative googling and research after examining the pictures here in this thread. Mainly looking up fragments of the chip serial number and then pattern matching the description to websites selling derivative chips. When I found a match showing the manufacturer then I looked up the manufacturer and there it was, a one hung low brand selling exactly what you described. I wonder how negative one got to his photo, that’s the real clue!
Electrical Wiring CAD Freeware? - Page 1
Forum section: electronics / general

author: wblackledg
author_rank: Regular Contributor
timestamp: November 15, 2018, 10:31:50 pm
content: I'm looking for something I can use to design wiring for a trailer conversion into a camper (caravan).So it would have both home electrical components as well as 12VDC . Solar, etc.any suggestions?thanks!

author: wblackledg
author_rank: Regular Contributor
timestamp: November 16, 2018, 02:08:53 pm
content: Does anybody know what software is used to create these diagrams?I'd be fine paying for the software, just didn't want some mulit-thousand dollar professional CAD system.thanks.

author: NiHaoMike
author_rank: Super Contributor
timestamp: November 16, 2018, 02:25:38 pm
content: There's LibreCAD and QCad which are more or less equivalent to the 2D part of AutoCAD (see FreeCAD for the 3D version) or some generic schematic editor like KiCad might work. Scanlime also released the source code for DaveCAD if that fits your needs.

author: HwAoRrDk
author_rank: Super Contributor
timestamp: November 16, 2018, 03:12:46 pm
content: Check outQElectroTech.

author: HwAoRrDk
author_rank: Super Contributor
timestamp: November 16, 2018, 03:18:31 pm
content: Quote from: NiHaoMike on November 16, 2018, 02:25:38 pmNah, that wasn't a source code release, it was a pirated version ("cracked version by Tuco Crew").

author: rdl
author_rank: Super Contributor
timestamp: November 16, 2018, 06:10:34 pm
content: It probably wouldn't be suitable for wiring of a skyscraper, but Diptrace would probably be fine for a small project. It's very easy to make custom parts. So easy that I rarely use any of the pre-made libraries.
1983 Zaxxon Mini Arcade Teardown - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: November 13, 2018, 03:49:35 pm
content: I've seen other min-arcade style VFD consoles, but, this is the first one with 2 separate VFD displays opto-mechanically superimposed via a semi-transparent mirror. I wonder if the Zaxxon game was any more expensive than the Ms. Pacman, or Dkong Jr. I also wonder how the battery life compared to a single VFD unit since the VFD heaters eat a good chunk of the battery life.
Maker Conferences in Melbourne (Aus) - Page 1
Forum section: electronics / general

author: ANTALIFE
author_rank: Frequent Contributor
timestamp: November 13, 2018, 10:31:31 am
content: Hey teamDo you guys know if there are any "Hackaday Superconference" type conferences in Melbourne (Australia)?I know we have a small Altium expo every year, and the Electronex expo every couple of years, but I was wondering if there are any expos that are more geared towards the maker community?

author: EEVblog
author_rank: Unknown
timestamp: November 13, 2018, 10:50:15 am
content: Not conferences, but try:https://www.meetup.com/Melbourne-Raspberry-Jam/events/mpzfhqyxpbhc/https://www.meetup.com/microcontrollergroup/events/mwlnxpyxpbsb/https://www.meetup.com/Melbourne-Eastern-Suburbs-Hackers/events/dqnvdpyxqbcb/

author: coppercone2
author_rank: Super Contributor
timestamp: November 13, 2018, 07:51:39 pm
content: what is that werewolf cat?
Copyright - Page 1
Forum section: electronics / general

author: Spark-Doctor
author_rank: Contributor
timestamp: November 12, 2018, 05:58:48 pm
content: I just found this and was not sure if it was allowed.https://www.youtube.com/watch?v=FMovbi_zoaA] https://www.youtube.com/watch?v=FMovbi_zoaA

author: MrMobodies
author_rank: Super Contributor
timestamp: November 12, 2018, 06:16:39 pm
content: Bill Mainland joined Youtube on 22 May 2015.All videos put up on the 11 Sep 2018.Looks like some spammer is using the account.Pinned on all the videos a link on Amazon advertising one of these:Siglent Technologies SPD3303X-Ehttps://www.amazon.com/dp/B01410O424Tag removed from above url"?tag=e07z-20"
“Things I Have Invented” (OT) - Page 1
Forum section: electronics / general

author: mtdoc
author_rank: Super Contributor
timestamp: November 09, 2018, 05:46:08 am
content: From my favorite Aussie writer/blogger/journalist/poet:Things I Have Invented

author: GK
author_rank: Super Contributor
timestamp: November 11, 2018, 12:39:00 pm
content: Since no on else has commented with an opinion, I'll give mine. That is a load of sophomoric crap.Now for no particular reason other than that this is an OT thread, the best hillbilly metal cover band ever! :http://youtu.be/Li58voy6xXM
Aliexpress 11.11 2018 Thread - Page 1
Forum section: electronics / general

author: sleemanj
author_rank: Super Contributor
timestamp: November 10, 2018, 10:40:10 pm
content: So it's 11.11 again, and the annual sort-of-sale is on at Aliexpress where most things get back to their normal prices after a couple weeks of being artificially high, but a few things legitimately get discounted.Seems to have been a bit low-key this year in terms of build up I thought, havn't noticed much in the way of the coupon promotion stuff they were doing previously.Anybody found anything with a decent discount worth having?

author: Qw3rtzuiop
author_rank: Frequent Contributor
timestamp: November 10, 2018, 11:45:15 pm
content: I was thinking about a trinocular. They are a little bit cheaper from eakins.
Worlds simplest multimeter W\ teardown - Page 1
Forum section: electronics / general

author: larrybl
author_rank: Regular Contributor
timestamp: November 10, 2018, 03:32:50 pm
content: I picked this up because it was cute. Yea I wasted $5.00 but what the heck, it seems to work for my needs. Specifications are 2k-volt.

author: Domagoj T
author_rank: Frequent Contributor
timestamp: November 10, 2018, 08:31:07 pm
content: That looks like my first multimeter, mine being beige.Several years ago I wrapped it in bubble wrap to send it to Dave for the mailbag, but it ended up sitting on my shelf for a few weeks (or was it months). In that time somebody else (IIRC from somewhere in Africa) already sent him one. Never got around to actually send it.Well, I found it...

author: Ian.M
author_rank: Super Contributor
timestamp: November 10, 2018, 08:53:17 pm
content: At least yours doesn't have 1000V ranges!

author: Domagoj T
author_rank: Frequent Contributor
timestamp: November 10, 2018, 09:28:38 pm
content: You appear to have the same probes I do. I don't think 500V or 1000V makes much of a difference with them.Anyway, I've just opened mine and there is a bit of a difference between the two units.Yours appears to be one of them newfangled SMD jobs. This one is old school. They don't make them as they used to...Since I had it opened, I popped in a battery and tested it. Something's wrong with it. I can't get it to measure a 56 ohm resistor. Turning the pots doesn't do anything.EDIT:The white dotted silkscreen on the back of the board matches the copper on the other side. I'm no CAT certification expert, but I don't think it would qualify even for the Chinese CE sticker.

author: orolo
author_rank: Frequent Contributor
timestamp: November 11, 2018, 09:41:02 am
content: Exactly these extremely cheap things are sold here as well. I have one or two in the junkbox for the pieces. The analog needle is cute, I put one in my first homebrew PSU. The case is ok for small projects, the right size for 18650 batteries.The multimeter itself is utter junk. The probes fall apart if you look at them too hard. Precision is nonexistent. Didn't someone send one to Dave in the mailbag, long, long ago? Since these multimeters appear to be spread the whole world around, it could be an interesting project to make them just usable.
cryptocurrency mining: giving back to the community - Page 1
Forum section: electronics / general

author: NiHaoMike
author_rank: Super Contributor
timestamp: November 10, 2018, 04:50:37 am
content: About a year ago, I built a solar powered cryptocurrency mining machine and got a bit of fame when I used it to help a content creator. Although that setup is pretty diverse and mines many different coins, at the time one coin - Swagbucks - accounted for most of its profit at nearly $150 that month while using only about 8W for the Android tablet and Raspberry Pi. Thus I could spare a little profit in order to not be seen as selfish. What made that possible was a bit of code running on the Pi to manage the mining software. That sort of script is normally kept a carefully guarded secret in the community since if it goes into widespread use, mining difficulty would skyrocket.But the difficulty has increased ~5x compared to last year plus the halving near the beginning of the year so now the mining profit is more like $15/month. (The other coins also increased in difficulty.) Thus, there's less profit to go around, but also I have much less to lose.As I previously mentioned, I cannot just openly share the code since all that would accomplish is skyrocket the difficulty, and ultimately kill the only thing I like about Swagbucks - the high mining efficiency. But now I have an idea - what if I share the code with a content creator who then shares it with his/her supporters? (I'm operating under the assumption that the content creators are too busy to bother setting up a mining setup themselves.) The supporters would then see more value in supporting the content creator and a significant percentage would donate more. I can easily see that being more of a benefit to the content creator than if I gave them all of my mining profit while I would only lose a little - maybe not even noticeable if I pick a niche content creator like Fran Blanche.The main barrier to this idea is that the code is basically just thrown together and intended to only work on my setup. (I never intended it for use by anyone else!) It will definitely need modification to work on another setup. The time to set up the tablet/phone, Pi, and pool/exchange account is significant (easily an hour or two for someone experienced, more for a beginner) so I would prefer that to be done by the supporters who enjoy tinkering with that stuff.Would it be reasonable to expect the supporters to keep the code a secret among themselves? I will place a note explaining why the code shouldn't be overshared, since beginners to the cryptocurrency scene would not understand. I would certainly expect the supporters to be way less selfish than average if they're supporters in the first place.