hybridfree/eevblog-posts huggingface dataset:
µTug: Micro robot pulls 2000 times its weight - Page 1
Forum section: electronics / general

author: made2hack
author_rank: Frequent Contributor
timestamp: April 29, 2015, 02:04:29 pm
content: A 12 gram "micro tug" robot moves objects 2000 times its size on glass (steel objects without wheels or lubrication) enabled by gecko adhesives. This capability is comparable to a human dragging a blue whale. Even if the human was strong enough, their shoes would just slip making this impossible without this micro robot's special gecko inspired "shoes."https://youtu.be/_rWuUUGWAp4How does one embed youtube videos on the forum?

author: Zero999
author_rank: Super Contributor
timestamp: April 29, 2015, 04:16:12 pm
content: Impressive but bear in mind the 2000× its own weight benchmark won't scale linearly so comparing it to something the size of a human being able to drag a blue whale is not a fair one.

author: electr_peter
author_rank: Unknown
timestamp: April 29, 2015, 04:21:18 pm
content: Quote from: trs80 on April 29, 2015, 02:04:29 pmRemove "s" from "https" to gethttp://youtu...

author: Mechanical Menace
author_rank: Super Contributor
timestamp: April 29, 2015, 04:25:38 pm
content: Quote from: Hero999 on April 29, 2015, 04:16:12 pmExactly what I was thinking. It's 12 gram and what, a couple of cm3, I'm 120000 gram and I'd guess about 90000 cm3. I may not be proportionately as strong but I bet I can move myself and that cup for less energy than the µTug can move the cup..

author: Zero999
author_rank: Super Contributor
timestamp: April 29, 2015, 06:35:18 pm
content: A flea can jump higher than any other animal in proportion to its height but that's only because it's so damn small and the same goes for ants that can carry several times their bodyweight. A domestic cat can also jump higher relative to its height than a cheetahGravity is less of an issue for small things.
Forum defect: email notification url broken with '(' / ')' - Page 1
Forum section: electronics / general

author: obiwanjacobi
author_rank: Super Contributor
timestamp: February 01, 2015, 09:58:16 am
content: Not sure where to report a defect so I posted it here. Sorry if its the wrong place - best of intentions of course.I have a subscription on a topic that has '(' and ')' in the title. The url that is created in the email stops at the first '('. So clicking it will only get you to the forum - not to the topic.Hope it helps,Marc

author: wblackledg
author_rank: Regular Contributor
timestamp: April 28, 2015, 02:00:54 pm
content: Quote from: obiwanjacobi on February 01, 2015, 09:58:16 amPlus 1.Just got an email alert to a thread I'm not subscribed to. This happened immediately after I posted a new topic.(if that helps debug)corrupted database pointer problem??thanks.
Hail Storm - Page 1
Forum section: electronics / general

author: ToeJam
author_rank: Contributor
timestamp: April 28, 2015, 10:22:26 am
content: Hey Dave;I'm seeing in the news that there was some pretty heavy hail on 25th.Seems like it caused the collapse of 2 factories. Hope there was no-one inside.Hope you guys and all Sydney residents are okay.Check your solar panels too.CheersToejamScottish Borders
Interesting trip with early GPS - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: April 27, 2015, 06:53:56 pm
content: There is a thread about what to do with an old GPS. It reminded me of one of the most interesting thing I did. I do not want to hi-jack that thread, so I start this new one to share with you.When consumer GPS was first on market and in-car GPS was yet a distant dream, this first generation handheld GPS for sport man came to market. No capability of maps – just raw current longitude and latitude display with distance to target longitude latitude. I had to get myself one, drove hours to a place that actually had it…(Many years ago…) So, I got this Europe business trip that I go at least once a year. This one time, my family tagged along, result was, I had to drive from Stuttgart (Germany) to Antwerp (Belgium).Car GPS was not yet in existence. I didn't had much time to prepare. I got this idea and instead of just grabbing maps of major highways, I took time to note the major path(road)-change’s Long and Lat. Now it is called Way Points on GPS. So, with notes on road ID tape to the dash board (Highway X, from this Long-Lat to this Long-Lat), I drove from Stuttgart to Antwerp (with family sleeping in the back seat).That was one of the fun-nest thing I have done. The few zig-zags were very confusing since the Long-Lat distance is not confirmative like driving directly towards the target. The distance to target just increase and decrease as one do the zig-zag. It was very easy to loose one's sense of direction.I did got lost at one point. I planned on going through Luxemburg to Belgium. On the map, I found this last stretch of highway (A4?) that goes to the Germany-Luxemburg border. The same highway is in both Germany and Luxemburg. On the map, the highway seems to disappear right at the border of Germany and reappear on the other side in Luxemburg. I didn’t think much of a missing 1-2km stretch of road, thinking the map probably has an error at the border since a highway can't just vanished at border crossing. Nope, indeed there was a valley (ravine) and no road there. The highway ended at a T at the edge of a deep ravine.I had no map of the area, so, I just followed any main road (at least 1 lane in each direction), find a crossing, and continue to head towards that Long-Lat I noted on the Luxemburg side. Had I not noted the longitude latitude of the highway in the Luxemberg side, I would have no idea of where to go. I was able to get to "the other side" of the ravine, found the highway entrance and carried on. That 1-2 hours side trip was interesting as well, nothing like getting lost in a foreign country, in the country side, and getting darker by the minute as night is about to begin. It was surprising to me how much it looked like the country side of Pennsylvania in the USA.That was most fun.Rick
74HC165 serial-in, parallel out ... or is it? - Page 1
Forum section: electronics / general

author: npelov
author_rank: Frequent Contributor
timestamp: April 27, 2015, 06:35:07 pm
content: Just decided to share a bit of debugging experience. I've put serial-in, parallel out to drive a graphic lcd because I wasn't happy with the built in (it was taking data without enable signal - probably defective LCD ... ebay). Also built in is up to 2 MHz and I wanted 16 MHz.So I spent quite a bit time to make sire every cable on the experimental PCB goes the correct pin, /CS to ground, /PL, Clock, data to correct MCU pins. And it didn't work. I never expected it to work - nothing works from the first time. Then I checked everything and found that I didn't connect PSB (parallel/serial) pin. I did, but again nothing. So I started probing the pins. All serial data was going in and stable, but output data lines were floating (tested by pulling them up/down with 10k resistor). Well then maybe /CS not connected correctly. But it is. And all this time I was looking at LCD and shift register datasheets.Then I got this strange idea: "What if I've put the wrong chip". I checked the markins - 74HC165 - well it's the one I intended to put. And I was just about to give up for an hour or two and then I had this crazy idea - to read the title of the datasheet - "8-bit Parallel-in/serial out shift register". What?!? That's the most stupid mistake I ever made.It's like to put a DAC instead of ADC, except this time the "data" pin fooled me, but of course the data pin was intended for daisy chain. And I intended to use it together with 74HC595 for reading keyboard and writing LCD at the same time. So the number 165 stuck into my head and I never thought about it twice. And I'm using these shift registers for years.Well ... I'm so frustrated that will take that 1-2 hours break. I'll have to replace the chip and remove and put all the 14-15 wires again.Lesson: next time start debugging with the quickest and easiest things - make sure you have the correct parts.Lesson two: if you never made a mistake of a kind before, don't count on not making it in the future.So what is your dumbest screw up?
Any hand vac with brushless motor - Page 1
Forum section: electronics / general

author: zapta
author_rank: Super Contributor
timestamp: April 26, 2015, 07:35:49 pm
content: We have a rechargeable hand held vac similar to the one in the picture. It's very handy but is also very noisy (sound wise). Are there similar products with a brushless motor? I presume they will be less noisy.

author: Zero999
author_rank: Super Contributor
timestamp: April 26, 2015, 07:41:45 pm
content: Yes there are similar products with a brushless motor but they're just as likely to be as noisy as most of the sound is produced by the fan spinning round, rather than the motor brushes.

author: Fraser
author_rank: Super Contributor
timestamp: April 26, 2015, 07:45:02 pm
content: As stated the high speed movement of air that makes most of the noise.Some designs are quieter than others but you need to test them to identify which or read the specs as they often provide a dBa noise figureAurora

author: zapta
author_rank: Super Contributor
timestamp: April 26, 2015, 09:00:24 pm
content: The nose sound to me more like the noise you hear from those hand drills with brushed motors. It's very loud. I will look for a unit with a low noise spec.

author: LabSpokane
author_rank: Super Contributor
timestamp: April 26, 2015, 09:07:47 pm
content: The noise is largely fan tip speed dependent. Brushless won't get you much noise reduction.

author: Zero999
author_rank: Super Contributor
timestamp: April 26, 2015, 09:45:19 pm
content: The modern Dyson portable vacuum cleaner has a brushless motor but I can tell you from my own experience, it's quite noisy.

author: BradC
author_rank: Super Contributor
timestamp: April 27, 2015, 01:29:58 am
content: Quote from: Hero999 on April 26, 2015, 09:45:19 pmIt certainly is, but it's also *far* more powerful than any other portable vac I've ever used.

author: all_repair
author_rank: Frequent Contributor
timestamp: April 27, 2015, 05:10:31 am
content: Quote from: BradC on April 27, 2015, 01:29:58 amGet a Dyson V6 (or better), you do not have to clean the filter when they become block, and cleaning out the debrises is also hassle free. The shortcoming is there is no mounting, you have to put it on the floor or benchtop.

author: amyk
author_rank: Super Contributor
timestamp: April 27, 2015, 02:39:47 pm
content: Quote from: zapta on April 26, 2015, 09:00:24 pmThat's also mostly fan noise.

author: Artlav
author_rank: Frequent Contributor
timestamp: April 27, 2015, 04:43:49 pm
content: Quote from: mojo-chan on April 27, 2015, 08:41:35 amDay and night difference. No wires to tangle, no sockets to jump between, no block to lug behind you, no pangs of lazyness from imagining having to do all that stuff.You basically grab it off the wall, clean the mess on the spot and put it back.Really improves your life quality, and emptying is no longer messy after some practice.But yeah, that 100(-ish?)W brushless motor makes about as much noise as a 2KW job in a regular vac - it's all about the airflow.
Is this workable or not - Page 1
Forum section: electronics / general

author: Jane
author_rank: Frequent Contributor
timestamp: April 29, 2015, 08:16:49 pm
content: I need to read/write NAND flash chips( only from time to time as a hobbyist) . I was thinking about a development board, where I would replace NAND flash chip with a SMD TSOP48 socket( yes the NAND chips I work with are for this socket only).I will insert a NAND into this socket and will read or write into it via JTAGIf the original NAND have the same size as the NAND chip I am programming, it should work. But what If I need to program( read or write) a NAND with the different size than the original NAND ? Is it possible to set the size of NAND chip on a development board? Or how expensive programmers solve programming of different sizes of flash chips?Thank you for explanations and your oppinion
Newbie looking for TEquipment discount for DS1054Z - Page 1
Forum section: electronics / general

author: member_of_eevblog
author_rank: Newbie
timestamp: April 27, 2015, 03:34:51 pm
content: Having tried searching, it appears that others seeking the discount code asked and then were sent the information.Would someone please send me the Tequipment EEVblog discount code?If this is not the right place please constructively direct me.Thanks,
Need opinions on our product Page00 - quick way to publish project pages online - Page 1
Forum section: electronics / general

author: cgarg
author_rank: Newbie
timestamp: April 27, 2015, 04:18:14 pm
content: Hi friends, we are working on this producthttps://page00.com. Would like to know what you people think about it. use it and let me know of any opinions and feedback on it.thanks

author: cgarg
author_rank: Newbie
timestamp: April 27, 2015, 04:32:14 pm
content: sorry if this post is off-topic, moderator please do delete it in that case.
BenQ Monitor Teardown and Attempted Repair Video - Page 1
Forum section: electronics / general

author: SteveyG
author_rank: Unknown
timestamp: April 25, 2015, 07:29:56 am
content: For anyone that might be interested, I've just uploaded a teardown of a faulty BenQ/LG TFT Monitor and an attempted repair.

author: SteveyG
author_rank: Unknown
timestamp: April 26, 2015, 06:18:54 pm
content: Repair win.
farnell's interesting categories - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: April 25, 2015, 08:27:46 pm
content: http://uk.farnell.com/diodes-rectifier-miscellaneousreally easy to find parts there thenSome bright spark has also decided that we need to have the over 600V and under 600V mosfets separating into separate categories. And still not temperature options in their wonderous parametric search.

author: Simon
author_rank: Unknown
timestamp: April 26, 2015, 07:13:45 am
content: When I complained about errors (bad ones like putting +/-1C on a +/-2C sensor) they took two weeks to reply, digikey responded to a similar problem in 2 hours.I keep offering my services to read and understand datasheets

author: Zero999
author_rank: Super Contributor
timestamp: April 26, 2015, 10:10:15 am
content: Farnell don't have enough technical staff. I doubt the people who work on their site know much about the products. A lot of it is probably automated.

author: Simon
author_rank: Unknown
timestamp: April 26, 2015, 12:09:13 pm
content: They no very little and all use different ways of listing specs it's like every time they put a unit of measure in it creates itself as a new option as you will often find all in a row stuff like 10V 10VDC & 10 or even 10V DC they just haven't a clue, looking for logic level mosfets has been fun with 2V gate threshold as often the minimum voltage is listed not the highest and of course no logic level filter. Utterly hopeless, as i said to them when they rang me up I chose to use digikey for work becsause despite being more expensive saved me more time (money for my employer) than the difference in parts due to their inadequacy. I was told they were redesigning the site and all would be sorted, they launched it and frankly i see no difference.

author: tom66
author_rank: Super Contributor
timestamp: April 26, 2015, 12:59:05 pm
content: When I was at a careers fair in Leeds Uni, which is the same city in which Farnell's UK base is, they were recruiting graduates of electronics engineering for technical data entry & support. I think it was £16k p.a. Given I could get the same as an engineering student without a degree, it's not really surprising that there are so many mistakes in their catalogue, they simply don't have the right people for the job that understand things like +/-0.05ohm on a 0 ohm resistor doesn't make sense, etc.

author: Simon
author_rank: Unknown
timestamp: April 26, 2015, 05:59:41 pm
content: they probably rely more on people already knowing what they want or the simply don't understand but like i said. if I have to do a job for work it's straight to digikey as they are spot on and very responsive if there is an error found and to be fair the only one I did find was a very illusive one that required very careful and long studying of a datasheet that headlined a -55 spec but covered many parts in the datasheet of which only one was -55C
LED Lights jam VHF and AIS radio - Page 1
Forum section: electronics / general

author: gildasd
author_rank: Frequent Contributor
timestamp: April 26, 2015, 08:53:29 am
content: Apparently, some LED lights sold for maritime usage have this "small" defect.Me thinks they need to hire a proper EE with some test equipment.http://www.actunautique.com/2015/04/bateaux-les-frequences-vhf-radio-et-ais-brouillees-par-les-eclairages-a-led.html#Article in French, sorry, trying to find a similar source on the other side of the pond.In class, we sweep our circuits with a simple antenna and radio to find this kind of obvious stuff.How ham fisted does one have to be to actually push this all the way to actual sales!

author: Howardlong
author_rank: Super Contributor
timestamp: April 26, 2015, 09:11:56 am
content: I had the same problem listening to band II FM broadcasts when I first retrofitted LED downlighters on halogen MR16 about three years ago. The broadband noise from some of some of these LED lights is really not good. Pretty sure they'd never pass the relevant EMC tests as a result.The range is not far, but it will affect devices within a few meters, raising the noise floor to unacceptable levels essentially blocking reception.

author: gildasd
author_rank: Frequent Contributor
timestamp: April 26, 2015, 09:28:57 am
content: It's a wonder they are on sale.What is annoying on land is life threatening at sea.
Request for Dave: Share more industry stories - Page 1
Forum section: electronics / general

author: sebmadgwick
author_rank: Regular Contributor
timestamp: April 25, 2015, 06:55:54 pm
content: I was watching some older videos and it seems like Dave used to share more stories and memories from the industry back then.I would love to hear more interesting tales of lessons learned the hard way, and more about some of the intriguing situations he sometimes mentions in passing, such as working on a $100k PCB (maybe mentioned on Amp Hour).I hope it isn't a faux pas to post a request like this. I'm doing it anyway!

author: Simon
author_rank: Unknown
timestamp: April 25, 2015, 06:59:42 pm
content: You may hear some of these on the amphour, I expect there may be limits to what he can disclose as well as we all know where he worked.

author: gildasd
author_rank: Frequent Contributor
timestamp: April 26, 2015, 09:10:49 am
content: Quote from: Simon on April 25, 2015, 06:59:42 pmAre there limits to where Dave's mouth can run?Limiting that would be like putting an inline resistor and a thermal fuse to Dave.Hum...Is an "inline resistor and a thermal fuse" a good description of a long suffering wife?
I think it is fake company  - Page 1
Forum section: electronics / general

author: ksiw
author_rank: Newbie
timestamp: April 24, 2015, 08:35:30 am
content: look at this:https://www.eevblog.com/forum/buysellwanted/pcbjoint-pcb-supplier-in-china/i do not think it is a real company.1 it does not show any products here, just a table.2 there is no telephone number.3 i am a sales clerk, often see email telling me" you have a inquiry and please log in alibaba or ebay for checking" the web looks very like, but when getting to the link, it needs me to log in and ask my email and code.4 the facebook, twitter, linked-in tags do not work, if a company really designs his web beautiful as its, (as to the web i think is good), there is no reason for the tags do not work.5 no address, shenzhen is a very large city in China,a safe company will write the company address as detailed as possible.How is your idea?
How safe are China parts on eBay or Amazon? - Page 1
Forum section: electronics / general

author: Pack34
author_rank: Frequent Contributor
timestamp: April 08, 2015, 03:49:08 pm
content: I'm in a real bind, going to need to do a small run (<50) and the bucks I'm looking for seem to be sold out everywhere. I'm guessing most of these are either salvaged parts or scrap parts from a PnP. Is this typically safe or does it tend to vary widely?

author: Pack34
author_rank: Frequent Contributor
timestamp: April 08, 2015, 07:25:42 pm
content: These.http://www.ebay.com/itm/50PCS-CS51411E-Encapsulation-SOP-1-5A-260-kHz-AND-520-kHz-LOW-VOLTAGE-BUCK-/371174191256?ssPageName=ADME:X:AAQ:US:1123Seller watermark matches the seller on Amazon, probably same person.

author: TSL
author_rank: Regular Contributor
timestamp: April 09, 2015, 07:26:44 am
content: Quote from: Pack34 on April 08, 2015, 07:25:42 pmAh thats UTsource - one of the more reliable sellers. They have their own website....http://www.utsource.net/I've bought a few devices direct from them over the years and, as far as I can tell, they've been the genuine item.When I've searched for specific devices they often have stocks from different manufacturers so you can often pick a direct replacement if you choose so.regardsTim

author: all_repair
author_rank: Frequent Contributor
timestamp: April 09, 2015, 09:20:08 am
content: Quote from: TSL on April 09, 2015, 07:26:44 amUTSource, they play well so far from my encounters with them . Even if you end up getting fake or defective, they shall refund you.

author: Ian.M
author_rank: Super Contributor
timestamp: April 09, 2015, 10:04:14 am
content: With the run size you are intending, it would be practical to make up whatever test jig is in the datasheet and test every single one,

author: KSP
author_rank: Regular Contributor
timestamp: April 09, 2015, 11:59:35 am
content: From my experience with chinese parts there are 2 main risks. Cheap brands you've never heard of will often create a terrible product, but buying known brands often comes with the risk of them being fake.I personally avoid getting bits from ebay.A customer one time sent a DMM in with a cheap chinese 9v battery in. I replaced it but kept it on my desk for a day or two before it spontaneously exploded with enough force to bed half of it in the ceiling. I've avoided unknown brands ever since

author: Pack34
author_rank: Frequent Contributor
timestamp: April 14, 2015, 02:43:51 pm
content: So far this looks all legit from UT source. I even requested in the comments if I can have the parts in cut tape for the PnP and they came through. I'll put together a test board just to verify the part and then put the batch together over the weekend.

author: retrolefty
author_rank: Super Contributor
timestamp: April 14, 2015, 05:38:57 pm
content: Quote from: KSP on April 09, 2015, 11:59:35 amI'm sorry but I would have to hear more about this event to be believable. Where did the energy come from that could accomplish this, surely not from a 9 volt battery?

author: KSP
author_rank: Regular Contributor
timestamp: April 23, 2015, 02:31:33 pm
content: Granted they were soft ceiling tiles but still!
What RSS feed reader are you using?  - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: April 23, 2015, 06:34:48 am
content: /.

author: ve7xen
author_rank: Super Contributor
timestamp: April 23, 2015, 07:18:21 am
content: Since Google Reader was shut down, I have set upTiny Tiny RSSon a personal server and been happy with it. There's a decent Android client and I like the web interface.

author: mcinque
author_rank: Unknown
timestamp: April 23, 2015, 11:46:28 am
content: I'm using Feedly.

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: April 23, 2015, 12:28:47 pm
content: I am using feedly as well and like it very much.

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: April 23, 2015, 01:40:55 pm
content: Indeed any device - I use a windows phone and even for it the app is available!

author: Len
author_rank: Frequent Contributor
timestamp: April 23, 2015, 03:23:40 pm
content: I use NewsBlur on the desktop (browser) and iPhone.
Need help interpreting Chinese instructions for a clock - Page 1
Forum section: electronics / general

author: xrunner
author_rank: Super Contributor
timestamp: April 25, 2015, 01:02:12 pm
content: Might buy this clock kit just to see how it looks/works -Clock KitI downloaded the PDF file instructions, but I'm not sure what they mean in some places. Main thing is where it says in 3 or four places -"... add "1" as 8 MHz speed".What's that all about? I take it "long press button" means to press it a long time, but I have no clue what the 8 MHz thing is all about. There's also another place where it mentions "1 MHz"Here is a small screen shot, and I attached the PDF file. Any help would be appreciated. Thanks.

author: all_repair
author_rank: Frequent Contributor
timestamp: April 25, 2015, 01:42:53 pm
content: short press is straight forward. +1 per press when the sound is on ( guess sound means a beep for every increment)Long press is +1 at 8 Hz rate when sound is on. I guess a better way to put it, is +1 per 125ms.

author: xrunner
author_rank: Super Contributor
timestamp: April 25, 2015, 04:56:08 pm
content: Quote from: mojo-chan on April 25, 2015, 01:21:13 pmHmmm ... Sounds plausible.I've noticed another translation quirk - whenever they mean "soldering" they always seem to use the word "welding". Is there no exact Chinese translation for "soldering"?

author: Richard Crowley
author_rank: Super Contributor
timestamp: April 25, 2015, 05:05:54 pm
content: Quote from: xrunner on April 25, 2015, 04:56:08 pmThat has been discussed before. Apparently there are several languages where they don't make a distinction between "welding" and "soldering".

author: xrunner
author_rank: Super Contributor
timestamp: April 25, 2015, 05:07:22 pm
content: Hey Richard - I sent you a PM several days ago about something - do you not read your PMs?

author: Richard Crowley
author_rank: Super Contributor
timestamp: April 25, 2015, 05:14:32 pm
content: Sorry, I missed it. I'm not much into PMs.
Transistor Texter! - Page 1
Forum section: electronics / general

author: xrunner
author_rank: Super Contributor
timestamp: April 22, 2015, 12:44:30 pm
content: Tired of texting your friends? Well, now they've invented a way to text your favorite transistors. This way, they can tell you their parameters in a text message!http://www.ebay.com/itm/New-Blue-Aluminum-Case-12864-LCD-Transistor-Tester-Capacitance-ESR-LCR-Meter-/161605714541?pt=LH_DefaultDomain_0&hash=item25a073826d

author: Mechanical Menace
author_rank: Super Contributor
timestamp: April 22, 2015, 12:48:12 pm
content: Quote from: xrunner on April 22, 2015, 12:44:30 pmWith a genuine TEXTDDL zif...

author: smjcuk
author_rank: Frequent Contributor
timestamp: April 22, 2015, 01:22:21 pm
content: hahahaha that's hilarious. Well spotted with the ZIF socket as well.Not sure what the autobot logo is for either

author: Howardlong
author_rank: Super Contributor
timestamp: April 22, 2015, 01:49:43 pm
content: I have one with the same insides but no spelling mistakes. Take care to fully discharge caps before popping them in, or you'll have one destined for landfill, like I did.

author: xrunner
author_rank: Super Contributor
timestamp: April 22, 2015, 02:09:40 pm
content: I have an older "transistor tester" but I saw a newer version in a video that's got a whole lot faster startup speed. This one -http://www.ebay.com/itm/GM328-transistor-tester-ESR-table-LCR-frequency-meter-square-wave-genera-/271821270337?pt=LH_DefaultDomain_0&hash=item3f49cf6d41I ordered it, but I don't know if it will "text" the transistors or not. I just ran across that funny labelling in the process of looking. Some of them are starting to package the things a little better, but they still have some work to do as far as the labels.

author: Zero999
author_rank: Super Contributor
timestamp: April 22, 2015, 03:40:27 pm
content: This has been posted before:https://www.eevblog.com/forum/chat/transistor-texter/
New EEVblog Forum Smilie/Emoticon - Page 1
Forum section: electronics / general

author: max666
author_rank: Frequent Contributor
timestamp: April 20, 2015, 05:43:30 pm
content: Wheee, Dave added the 'Popcorn' Smilie/EmoticonAnd may I be completely bold and claim first usage of that emoticon here on the EEVblog forum, about one year ago, in my very first post here:Blog Specific/Re: EEVblog #540 - HP35670A DSA Repair - Part 4«on: March 27, 2014, 12:15:08 PM »PS: What happened to the HP35670A DSA, Dave?
constant voltage LED driver: is it any special? - Page 1
Forum section: electronics / general

author: bitwelder
author_rank: Super Contributor
timestamp: April 18, 2015, 11:55:22 am
content: As per question in the title: does a constant voltage LED driver have anything different from a simple stabilized PSU (e.g. the classic linear with 78xx)?Some LED driver description mentions about circuitry to improve PFC and reduce harmonics on the mains side, but... are those an issue of all LED lighting, are related to dimming or what else?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 18, 2015, 12:05:03 pm
content: A CV LED driver is just a power supply, however it might have more ripple than something sold as a power supply, and possibly different approvals.

author: bitwelder
author_rank: Super Contributor
timestamp: April 18, 2015, 03:36:14 pm
content: Thanks mike!
SIGLENT & Upcoming Exhibitions - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: April 10, 2015, 07:06:45 pm
content: Greetings!I just wanted to let everyone know that SIGLENT (America) will be exhibiting at the following shows in May and June:* ESC-Boston (Embedded Systems Conference): May 6-7* Dayton (Ohio) Hamvention: May 15-17* ASEE (Seattle) American Society of Engineering Educators: June 14-17We will be exhibiting some new products at all three shows. Please stop by and say hello if you are planning to attend!ThanksSteve

author: tautech
author_rank: Super Contributor
timestamp: April 10, 2015, 07:43:04 pm
content: Quote from: Siglent America on April 10, 2015, 07:06:45 pmStop the teasing Steve.....and give us a hint about them.

author: Unknown
author_rank: Unknown
timestamp: April 15, 2015, 08:10:40 pm
content: Spectrum Analyzers.....Beautiful new economy Oscilloscope family....New Generator family....How's that??

author: Muttley Snickers
author_rank: Unknown
timestamp: April 15, 2015, 11:18:07 pm
content: Quote from: tautech on April 10, 2015, 07:43:04 pm"Stop the teasing Steve"....and make a bloody video of the gear and the shows.Muttley

author: Hydrawerk
author_rank: Super Contributor
timestamp: April 15, 2015, 11:38:43 pm
content: QuoteAt first it would be great if you sent the SDS2000 to Dave Jones' lab for a review. Is the firmware mature nowadays?

author: nctnico
author_rank: Super Contributor
timestamp: April 16, 2015, 09:10:44 am
content: Quote from: Siglent America on April 15, 2015, 08:10:40 pmLet me guess: something with similar specs like the Rigol 1000Z series?

author: Muttley Snickers
author_rank: Unknown
timestamp: April 16, 2015, 09:28:35 am
content: A rebadged LeCroy perhaps.........Muttley

author: Galenbo
author_rank: Super Contributor
timestamp: April 16, 2015, 12:10:36 pm
content: Quote from: Siglent America on April 15, 2015, 08:10:40 pmCan I hack them so I get a 500MHz full option out of the 300 dollar base model?
This website was down? - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: April 15, 2015, 07:39:23 am
content: Was this website down from 3:37:30 to 3:38:10 UTC-5 DST?

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 15, 2015, 08:47:02 am
content: 40 seconds? Why would you even bother?

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 15, 2015, 04:58:18 pm
content: Yes I understand, that is frustrating, happened to me too. What I mean by why bother is that it could have been anything between your pc and the eevblog server, it is solved already and you are not going to get your reply back. So there is little gain in knowing where the fault was.

author: retiredcaps
author_rank: Super Contributor
timestamp: April 15, 2015, 07:16:55 pm
content: If I am writing a lengthy reply, I write it down into leafpad/notepad, then I cut & paste the text.PS. Thanks for the translation on the 87VC.
Interesting T&M gear on e-(b)pay - Page 1
Forum section: electronics / general

author: Vgkid
author_rank: Super Contributor
timestamp: April 15, 2015, 03:58:22 am
content: Post anything different unusual that would be interesting here.starting off:GenRad1616, part of the 1621 cap BridgeeBay auction: #http://www.ebay.com/itm/IET-LABS-GEN-RAD-1616-PRECISION-CAPACITANCE-BRIDGE-/271837999737?pt=LH_DefaultDomain_0&hash=item3f4aceb279rarer than a 3458A, much more unique as well.specs:http://www.ietlabs.com/pdf/Datasheets/1621.pdf

author: timb
author_rank: Super Contributor
timestamp: April 15, 2015, 09:06:08 am
content: Just picked this guy up. It's an IOtech Analyzer488; it acts as a GPIB analyzer, serial based GPIB interface and instrument simulator.Got it for a song with the original carry case, manual, power supply and PC software on 360K 5 1/4" floppy.In analyzer mode, the unit is controlled by the front panel keyboard and data read out on the 20 character dot VFD. You can setup specific triggers to record on, or record everything and search. You can also single step through bus transactions and manually place data onto the bus and control all the interface lines. It'll store up to 32K lines of data in the battery backed SRAM.In serial controller mode you can use the unit as a serial based GPIB controller in high level (HP Basic style commands) or low level (direct control of bus management and data lines) modes. This lets you turn any PC with a serial port into a GPIB controller (like the NI GPIB-232 boxes). You can also go the reverse direction and hook serial devices (printers, plotters, etc.) up to GPIB devices (again, like the NI boxes). Additionally you can control the aforementioned analyzer mode from a PC via serial.Finally, there's an instrument simulator mode, where the unit simulates a variety of devices on the GPIB, even allowing you to define a custom instrument (and the data to go with it). This mode is useful if you're trying to setup some custom software to support an instrument you may not have access to.The unit runs off the classic 68B09 MCU with a TMS9914A GPIB controller. It was in great shape, the only thing wrong with it was a dead backup battery, which was a soldered in coin cell. I simply added a CR2032 coin cell holder and she was back in business.I couldn't find a copy of the PC software anywhere on the web, so I dug out my ancient Compaq Portable III and imaged the disks to upload to my website for archival purposes. I also pulled the ROM and made a copy of that as well.Right now, I've got it connected to the RS-232 port of my BeagleBone Black, being used to develop a web based T&M controller package I plan to finally release this summer.Sent from my Tablet
How not to run your ad campain - Page 1
Forum section: electronics / general

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 13, 2015, 02:51:23 pm
content: It's Teledyne Lecroy btw.

author: Kjelt
author_rank: Super Contributor
timestamp: April 13, 2015, 08:32:30 pm
content: they should have used Gogle translate

author: atferrari
author_rank: Frequent Contributor
timestamp: April 13, 2015, 11:17:19 pm
content: Playing tricks with some obscure trigger delay?

author: Dragon88
author_rank: Regular Contributor
timestamp: April 14, 2015, 01:49:32 am
content: Without the extra 'o' it would only be 8x closer to perfect.You know what they say about publicity though...

author: JacobIsHere
author_rank: Contributor
timestamp: April 14, 2015, 06:38:00 am
content: Haha

author: obiwanjacobi
author_rank: Super Contributor
timestamp: April 14, 2015, 05:37:34 pm
content: Ok, you make a perfect Chinese sentence - any.

author: Falcon69
author_rank: Super Contributor
timestamp: April 15, 2015, 04:45:33 am
content: It's not a mistake.It's an advertising ploy to get the reader to notice the ad. And, it seemed to work.

author: amyk
author_rank: Super Contributor
timestamp: April 15, 2015, 02:39:59 pm
content: Quote from: Falcon69 on April 15, 2015, 04:45:33 amIt would be if every time someone clicked it, an 'o' was added...
Suggest large cheapest possible display, not color, good illumination? - Page 1
Forum section: electronics / general

author: nardev
author_rank: Unknown
timestamp: April 13, 2015, 04:15:47 am
content: I need something easily attachable with raspberry pi. So at least display with good C++ lib and example.It can be slow, doesn't need to be color, large, 4-5" or more in diameter and with good illumination.As cheap as possible please!Could somebody suggest something? Preferably those that you used...

author: NiHaoMike
author_rank: Super Contributor
timestamp: April 13, 2015, 07:09:05 am
content: How about one of those car backup camera LCDs? Just plug it into the composite output and use normal graphics library.

author: nardev
author_rank: Unknown
timestamp: April 13, 2015, 09:57:28 pm
content: Where to find that?

author: PeterFW
author_rank: Frequent Contributor
timestamp: April 13, 2015, 11:20:36 pm
content: Quote from: nardev on April 13, 2015, 04:15:47 amWhy does it have to have good ilumination?To make it sunlight readable?There are quite a few not that pricey monochome LCD modules wich have very good readability in sunlight.Greetings,Peter
Hello; an introduction. - Page 1
Forum section: electronics / general

author: JBaughb
author_rank: Regular Contributor
timestamp: April 12, 2015, 10:09:41 pm
content: deleted

author: rolycat
author_rank: Super Contributor
timestamp: April 12, 2015, 10:50:14 pm
content: Welcome, JBaughb.You may not have noticed that there is a thread for introductionshere. It's a 'sticky' topic in the General Chat section.There's another for showing off your workbenchhere.No, 'Z' is not pronounced 'zee'. Not in Australia, and not in the United Kingdom. How you pronounce it in the States is up to youThe very international membership here can get quite excited about perceived cultural imperialism

author: Smokey
author_rank: Super Contributor
timestamp: April 13, 2015, 04:45:02 am
content: If the zed thing drives you crazy, just wait till you hear the "foreigners" pronounce the silent L in solder.And welcome ... and nice setup.

author: mtdoc
author_rank: Super Contributor
timestamp: April 13, 2015, 06:41:06 am
content: Quote from: Smokey on April 13, 2015, 04:45:02 amAnd don't forget adding a Z sound to chassis. Why can't these "foreigners" speak 'Mercin English damnit!Yes nice lab setup. Welcome.

author: IanB
author_rank: Super Contributor
timestamp: April 13, 2015, 07:11:00 am
content: Quote from: mtdoc on April 13, 2015, 06:41:06 amWho does that?I don't think I've ever heard a pronunciation other than "shassy".

author: mtdoc
author_rank: Super Contributor
timestamp: April 13, 2015, 07:16:43 am
content: Quote from: IanB on April 13, 2015, 07:11:00 amDave says "shazzy" . So both sh and z sounds where they don't belong! At least he does't pronounce the silent s on the end.

author: Smokey
author_rank: Super Contributor
timestamp: April 13, 2015, 05:07:20 pm
content: "shazzis" ha! I love it. I'm going to start using that one.
A video history of Japan's electronic industry (and more) - Page 1
Forum section: electronics / general

author: Warhawk
author_rank: Frequent Contributor
timestamp: April 14, 2015, 06:57:51 pm
content: I found these documentaries very nice. Others might like it as well:Enjoy.edit: link for part four updated

author: madires
author_rank: Super Contributor
timestamp: April 14, 2015, 07:47:57 pm
content: Part 4:

author: Warhawk
author_rank: Frequent Contributor
timestamp: April 15, 2015, 06:11:54 am
content: Quote from: madires on April 14, 2015, 07:47:57 pmThank you
6.5 digits digital BBQ thermometer - to cook your steak with extreme precision - Page 1
Forum section: electronics / general

author: mimmus78
author_rank: Unknown
timestamp: April 13, 2015, 04:13:32 pm
content: I cannot resist ...

author: IO390
author_rank: Regular Contributor
timestamp: April 13, 2015, 04:40:19 pm
content: "Applent"

author: rollatorwieltje
author_rank: Unknown
timestamp: April 13, 2015, 05:25:50 pm
content: I have calibrated both my deep fryer and oven with an industrial pt100 based system. Can highly recommend, both were quite far off. The oven about 20C too low, the fryer about 10 too high. Now the recipes actually work, this is highly important for someone who manages to burn water.I tried the oven first with a thermocouple from my cheap multimeter, it claimed to be able to measure up to 500C or so, but the insulation of the thermocouple started to melt at about 250...

author: electr_peter
author_rank: Unknown
timestamp: April 13, 2015, 05:52:49 pm
content: Quote from: rollatorwieltje on April 13, 2015, 05:25:50 pmElectric oven has a socket for a thermocouple probe to check temperature of a meal. Never bothered to do that for actual meal, but it seemed to work.I find that almost all ovens do not regulate temperature - they just turn on/off power with predetermined timer so temperature measurement is not very valuable in such cases.QuoteThermocouples, that are provided with typical DMM, are manufactured to sustain up to 200-250C max ascomplete assembly. Wires themselves without or with proper insulation probably can go for >1000C (at least for short periods).

author: AndyC_772
author_rank: Super Contributor
timestamp: April 13, 2015, 06:12:40 pm
content: Quote from: IO390 on April 13, 2015, 04:40:19 pmI keep expecting Siglent to rebrand themselves as "Sigsight" any day now.
Not just cheap PCB's - Page 1
Forum section: electronics / general

author: GK
author_rank: Super Contributor
timestamp: April 10, 2015, 02:00:08 pm
content: Doing so much trade with Chinese businesses these days it's easy, probably natural even, to develop an excessively rosy perception of this now fully emergent and growing contemporary global trading partner. Then every once in a while something like this pops up that reminds one what a fucked up and backwards shit hole the country truly is at its core:http://www.sbs.com.au/news/dateline/story/human-harvest-chinas-organ-trafficking

author: SeanB
author_rank: Super Contributor
timestamp: April 10, 2015, 07:02:53 pm
content: Tibetan prisoners as well.......As well as those stupid enough to think that being as drug mule will get them money.

author: wraper
author_rank: Unknown
timestamp: April 10, 2015, 07:42:04 pm
content: I smell a lot of bullshit in this "investigation".

author: SeanB
author_rank: Super Contributor
timestamp: April 10, 2015, 07:51:17 pm
content: Kidney transplants at the hospital up the road.... There are a few doctors and some of the intermediaries that are looking at some serious issues.http://www.theguardian.com/world/2010/nov/10/south-africa-hospital-organ-trafficking

author: GK
author_rank: Super Contributor
timestamp: April 11, 2015, 12:28:27 am
content: Quote from: wraper on April 10, 2015, 07:42:04 pmI am also a bit incredulous, but it could be 80% BS and still not paint a pretty picture.

author: IconicPCB
author_rank: Super Contributor
timestamp: April 11, 2015, 07:11:54 am
content: Lets not forget Albanain freedom fighters in Kosovo liberating Serbian civilians of their internal organs and the cover up that was produced following the revelations.

author: GK
author_rank: Super Contributor
timestamp: April 11, 2015, 09:25:35 am
content: Quote from: mojo-chan on April 11, 2015, 07:50:03 amWere we go; the moral retardation and relativism typical of the left. Whenever the most vile abuses of human rights by despotic governments come up for discussion excuses accompany reminders that we in the democratic west allegedly behave no better.

author: donotdespisethesnake
author_rank: Super Contributor
timestamp: April 11, 2015, 09:38:57 am
content: Quote from: GK on April 11, 2015, 09:25:35 amYup, Hitler had the right idea!

author: GK
author_rank: Super Contributor
timestamp: April 11, 2015, 09:41:08 am
content: Quote from: SeanB on April 10, 2015, 07:02:53 pmThat there are crimes that attract capital punishment in China that in western democracies would attract short jail terms or not even be considered crimes at all (eg political offenses) would be sufficient reason alone to ban transplant tourism to China. That is without even needing an ideological opposition to the death penalty or considering the allegations of organ harvesting extending to extrajudicial killing. From what I've read so far the only democratic governments to enact such bans to date are those of Israel and Spain. That seems a bit of joke to me.
Warning for eBay purchases of Apple accesories. - Page 1
Forum section: electronics / general

author: Nick1296
author_rank: Contributor
timestamp: April 11, 2015, 09:59:50 am
content: Hello.I came to see this by the purchase of an "Apple OEM" Lightning cable on eBay. If you want to see the auction I can't find it. Must have been taken down or something. I don't know for sure.Either way, I'm sure this is probably fake and I am putting it here as a warning. If you see one of these I'd assume it's counterfit. I just took it and looked into it first. It sounds fake, it has crappy text(hint of a fake) and it has misspellings and bad grammar in a few places. I was also told someone found 9 of these with the same serial number too.http://img08.taobaocdn.com/bao/uploaded/i8/T170tuXoJCXXa6gUQ._113700.jpghttps://pbs.twimg.com/media/BlMrTnDCQAEd8zv.jpgHere's the album:http://imgur.com/a/2Zmtzhttps://thecounterfeitreport.com/product/312/A1265-USB-iPhone-Chargers.htmlDesigned by Apple in CaliforniaModel NO.:A1265 Made in ChinaInput:100-240V ~ 50/60Hz 0.15AOutput:5V 1ACAUTION: For use with infor-mation technology equipmentSerial NO: 1X91029Y459TIt even has the fake logos and everything. I did the desk height drop and it even sounds like a knockoff. If you see this(or use one) get rid of it!
Tektronix, As this price is possible ? - Page 1
Forum section: electronics / general

author: klaus11
author_rank: Unknown
timestamp: April 10, 2015, 03:14:08 pm
content: I just ask for one.https://es.rs-online.com/web/p/osciloscopios-mixtos/8315410/?searchTerm=831-5410&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B337D5B5C732D2F255C2E2C5D5C647B332C347D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D4245522677633D4E4F4E45267573743D3833312D3534313026

author: klaus11
author_rank: Unknown
timestamp: April 10, 2015, 04:01:53 pm
content: They just uncataloged!

author: TopLoser
author_rank: Unknown
timestamp: April 10, 2015, 04:13:27 pm
content: Quote from: klaus11 on April 10, 2015, 04:01:53 pmThe one I had in my shopping cart got deleted before I had a chance to checkout!!Managed to buy one from RS in England though, had to make a phone call as it was listed as 'discontinued' on the UK website. £1700, lovely!! It's just been picked from the warehouse and shipped a nice lady just confirmed

author: klaus11
author_rank: Unknown
timestamp: April 10, 2015, 05:57:51 pm
content: Quote from: TopLoser on April 10, 2015, 04:13:27 pmI asked time, my order indicates "order processing"; Although I am restless, I paid with Visa, but still have not made the payment.£ 1700 = 2349.82 EUR

author: Howardlong
author_rank: Super Contributor
timestamp: April 10, 2015, 06:19:06 pm
content: Just called up RS here in the UK myself on the off chance, nice lady on the end of phone says "discontinued". :-(

author: TopLoser
author_rank: Unknown
timestamp: April 10, 2015, 06:57:47 pm
content: Well I've got a tracking number for mine, says it weighs 8.60Kg so that sounds about right.My first thought when you posted the link that it was just for the MDO3SA application module which is normally £1700 on its own, but from the package weight it really does look like you get the 1GHz 4+16 mixed signal channel scope and 3GHz spectrum analyser module for the £1700 !!!That's a hell of a bargain, well spotted!!

author: klaus11
author_rank: Unknown
timestamp: April 10, 2015, 08:13:29 pm
content: I'm glad, in the end you caught one. I think RS.UK works better than RS.ES I placed the order at 14:00 local time and have only the order confirmation.The weekend begins on Thursday