hybridfree/eevblog-posts huggingface dataset:
EEVblog 1633 - WAVJA Photon Energy System BUSTED - Part 1 - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: August 01, 2024, 09:11:30 am
content: The WAVJA Photon Energy System is supposed to generate up to 60x the output of regular solar panels using balls made of magical patented woo-woo material.Let's bust that claim right open with Dave's superior Photon Irradiance Solar System technology!Part 1Part 2 looks at the patent.00:00 - WAVJA Photon Energy System on Hack-a-Day01:51 - This looks totally legit, so I BUILT MY OWN! The Photon Irradiance Solar System04:15 - My balls work in near darkness! And produce 5 TIMES the power as WAVJA!05:43 - What's that you can smell?06:52 - It's got AI?06:31 - Let's watch the video and the claims made...07:16 - Does it generate or absorb luminosity? It's a tad confusing...08:10 - 30 times smaller and 7.5x the output of solar panels!08:57 - Capturing solar power is all about the Capture Area, dummy!09:44 - It captures light and then WHAT?10:43 - It's Over-Unity BS!11:39 - It's got storage? 24 hour operation !12:59 - Their test setup and "power meter" results are demonstable BS!16:12 - Roughly 0.1W per ball, SO revolutionary!16:25 - The "charge" just comes from a commercial power bank, LOL! They have NOTHING!16:25 - Only 3000 hours to charge your Electric Truck battery pack17:05 - It gets MORE RIDICULOUS! Flying cars, shipping container drones, electric trucks!18:47 - The Patent & the Founders19:59 - Where does the light go? I'm confused...20:41 - Conclusion21:57 - I'm GIVING AWAY my P.I.S.S Technology!PART2:

author: mindcrime
author_rank: Unknown
timestamp: August 01, 2024, 09:47:00 am
content: Quote from: EEVblog on August 01, 2024, 09:11:30 amWeak sauce. You'd think they would have at least name dropped Nikola Tesla or something. But at least graphene did eventually make an appearance, so give them points for that. And the "AI chip". That bit was gold.

author: joeqsmith
author_rank: Super Contributor
timestamp: August 05, 2024, 03:39:12 pm
content: I had watched Sabine Hossenfelder's video on it as well.

author: Fryguy
author_rank: Regular Contributor
timestamp: August 06, 2024, 06:57:47 pm
content: 25 KW on a 12mm ball ? Sounds like the AB 619 model bead condenser to me . . .Are they members of "Electronics Service Unit No.16" ?
EEVblog 1629 - Dumpster Find: A3 Colour Photocopier - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: July 13, 2024, 04:33:26 am
content: A Konika Minolta bizhub C284e A3 colour photocopier found in the dumpster. Enjoy Dave's embarrassment at the redundant teardown.Ebay listing for original modern art print:https://www.ebay.com.au/itm/226241082176

author: Ranayna
author_rank: Super Contributor
timestamp: July 13, 2024, 12:11:39 pm
content: This thing, and your search for the power switch, reminds me of a somewhat wild story from workWe have similar large format printers from Canon.One of these printers had an issue recently after a service. It was called in as "Would not wake from sleep". An inspection quickly showed: The printer was turned off. Well, can happen, we switched it back on, told the local ladies where the switch is, and thought it resolved.Next day, the printer was again switched off. Ok, told the ladies to not turn off the printer again please, and switched it back on.Next day, the printer was again switched off. We got various assurances that no one there turned it off. We suspected the cleaning crew or the night watchman, but oddly only this one of the several printers we have was turned off.This continued for a couple of days, until we taped the switch cover shut.Next day, the printer was again turned off, but the tape was not tampered with.It turns out: This bloody printer actually has a servo in the power switch that is able to physically flip the switch to off, to eke out the last bit of power savings.And remember the service it had? The service tech forgot to disable the setting when the mainboard of the printer was replaced.What a ghost chaseLuckily our internal techs are very diplomatic infront of the users, so no blame was directly assigned. But internally we were so damn sure that someone in that department was turning the printer off without telling us.

author: scopeman
author_rank: Frequent Contributor
timestamp: July 14, 2024, 03:09:01 am
content: Dave,That is a first class machine that will probably outlast you! They build bulletproof machines. Your the luckiest guy I know!SamW3OHM

author: nctnico
author_rank: Super Contributor
timestamp: July 14, 2024, 04:18:47 pm
content: That is a really nice find from the magic dumpster room!

author: EEVblog
author_rank: Unknown
timestamp: July 15, 2024, 02:26:37 am
content: Quote from: scopeman on July 14, 2024, 03:09:01 amYeah it's cool, but takes up a fair bit of space in the dungeon though!But given that my other A3 colour is now spewing out rubbish, I'll have to keep it.

author: Brumby
author_rank: Unknown
timestamp: July 22, 2024, 12:23:22 am
content: Part of me is glad I don't have access to that dumpster room.I would be sleeping in a tent out in the back yard....

author: EEVblog
author_rank: Unknown
timestamp: July 22, 2024, 03:15:51 am
content: Quote from: Brumby on July 22, 2024, 12:23:22 amThankfully(?) I have two storage rooms.
121 GW - Current Clamp for EEV Blog Multimeter  - Page 1
Forum section: electronics / general

author: Ted123
author_rank: Newbie
timestamp: July 17, 2024, 07:11:13 pm
content: I have the EEV Blog 121 GW multimeter. I want to get a current clamp to plug in to it that works for this meter. I particularly want to use the current clamp for low voltage DC current measurements on automotive work so ideally a clamp with small jaws.Any suggestions?Thanks

author: thm_w
author_rank: Super Contributor
timestamp: July 17, 2024, 10:10:25 pm
content: Unless you need logging, just get a dedicated clamp meter like UT210E.https://www.eevblog.com/forum/testgear/good-clamp-meter-for-low-dc-currents/

author: Ted123
author_rank: Newbie
timestamp: July 17, 2024, 11:31:26 pm
content: Thanks, I will investigate, I just wish the jaws were a bit smaller to get in to tight spots

author: Brumby
author_rank: Unknown
timestamp: July 20, 2024, 12:08:09 pm
content: Another vote for the UT210E ... and they're not expensive.
EEVblog 1623 - Electronex 2024 Walkthrough - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 25, 2024, 05:48:27 am
content: Walkthrough of the 2024 Electronex trade show in Sydney.

author: nctnico
author_rank: Super Contributor
timestamp: June 25, 2024, 06:31:46 pm
content: The Hioki multi-channel scope is not a new idea at all. Yokogawa has been making similar devices for a long time (and I guess Hioki as well).

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: June 28, 2024, 04:35:49 am
content: The answer is UNI-T -- at least for most if not all of the Multicomp T&M equipment. The Multicomp brand will sell pretty much everything including the kitchen sink.The only real advantage to Multicomp over UNI-T is that they come with manuals/datasheets, and those manuals/datasheets are in English.
EEVblog 1626 - YOU HAD ONE JOB! (Solar Power Install FAIL) - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 27, 2024, 04:04:28 am
content: My solar power installer HAD ONE JOB but FAILEDA short story. LOL along as they attempt to reinstall and commision my Enphase solar power system.

author: nhand42
author_rank: Newbie
timestamp: June 27, 2024, 08:01:13 am
content: This is crazy. I wonder how many other houses have dodgy installations like this.

author: EEVblog
author_rank: Unknown
timestamp: June 28, 2024, 10:06:06 pm
content: Quote from: nhand42 on June 27, 2024, 08:01:13 amWell, none, because they all (eventually) work or they'd be out of business.

author: .RC.
author_rank: Frequent Contributor
timestamp: July 06, 2024, 09:18:45 am
content: Looks like a job for a WIGL.

author: EEVblog
author_rank: Unknown
timestamp: July 06, 2024, 10:44:47 am
content: Quote from: .RC. on July 06, 2024, 09:18:45 amOMG, what happened to WIGL?
EEVblog2 - High Frequency Active FET Probing DEMONSTRATED - Page 1
Forum section: electronics / general

author: exit_failure
author_rank: Regular Contributor
timestamp: July 02, 2024, 09:46:33 am
content: Tektronix used to build really crazy passive Probes in the seventies: Through dumb luck I have a couple of P6057 and P6056 probes in my collection though i have to admit that i haven't had much use for them yet.The P6057 is a 1.4 GHz, 1 pF, 50 V, 5 kOhm probe.The P6056 has an absolutely crazy bandwidth of 3.5GHz, 1 pF, 16V max but only 500 Ohm.For HF stuff I mostly use my P6245 active probes. Can you think of real world scenarios where one of those passive probes would be preferable?

author: tggzzz
author_rank: Super Contributor
timestamp: July 02, 2024, 10:34:45 am
content: Quote from: exit_failure on July 02, 2024, 09:46:33 amWhat is the significance of "EEVblog2 - " in the thread title?For those that don't have instant recall of all Tek probe's characteristics, here's the P6245:QuoteAt GHz frequencies, a "500ohm" tip resistance will be dominated by the 1pF tip reactance; do the calculation!What is the relative cost and availability of the two classes of probe?Which is more robust when used on circuits? What are the failure mechanisms? Include "bad practices"!

author: thm_w
author_rank: Super Contributor
timestamp: July 02, 2024, 07:45:07 pm
content: Quote from: tggzzz on July 02, 2024, 10:34:45 amhttps://www.eevblog.com/forum/blog/eevblog-1368-active-oscilloscope-probes-compared-(part-2)/
EEVblog 1625 - Electronex: Scope Wars: The Rise of Uni T - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 26, 2024, 12:42:09 am
content: Uni-T are making a surprising move into the mid end instrument market with some custom ASIC based oscilloscopes, spectrum analysers, signal generators and a bunch of other instruments.A talk with Mark Isherwood from Rapid-Tech, the Australian dealer for Uni-T.https://rapid-tech.com.au/uni-t-instruments/

author: Hella_Wini22
author_rank: Contributor
timestamp: June 26, 2024, 01:29:14 am
content: Great, but not earth-shattering.They took their time to identify free slots in the market, but they are no Tesla of measurement world.Still, it's nice to see third player in prosumer and small, but demanding workshops segments.Let's hoe that old addage "Two is a party, three is a crowd" come true and they force Siglent and RIgol to more aggressive competition.

author: fourfathom
author_rank: Super Contributor
timestamp: June 26, 2024, 03:14:09 am
content: I saw UNI-T (USA) at a convention / trade show, and their spectrum analyzer offerings were also quite interesting. I haven't done or seen a careful specification comparison, but they might be a worthwhile alternative. As I recall, I was told that they will soon be introducing a 1 GHz scope.

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: June 29, 2024, 02:22:55 am
content: Quote from: fourfathom on June 26, 2024, 03:14:09 amI did a comparison, on my own, of their DMM specs. Some of their accuracy claims were unbelievably good for the price point. Others, on their higher end DMMs, were comparatively mediocre. I'm not really sure what their goals are here. Do they want to produce really really cheap stuff that is okay-ish, or do they want to produce really solid offerings?Decent reviews are few and far between. Those that exist, are not very convincing with regards to the capability/accuracy of the products (see, for example, Mr. Joe Smith's work on YT). They're roughly equivalent to a store brand, such as Kobalt, or Harbor Frieght, when it comes to DMMs. Low quality plastic is the least of their concerns.EDIT: Just to be clear with everyone, I'd love to say that their products are wonderful, cheap, and I have 10 of each awesome offering. But that's not the case at all. I certainly hope they improve. We'll have to wait and see.

author: EEVblog
author_rank: Unknown
timestamp: June 30, 2024, 11:14:16 pm
content: Quote from: fourfathom on June 26, 2024, 03:14:09 amAs you can hear in the video, Mark mentioned 6GHzMaybe he meant sample rate?

author: EEVblog
author_rank: Unknown
timestamp: June 30, 2024, 11:15:27 pm
content: Quote from: ballsystemlord on June 29, 2024, 02:22:55 amYou can do both.
spam from India in the beginners forum - Page 1
Forum section: electronics / general

author: jmelson
author_rank: Super Contributor
timestamp: June 22, 2024, 02:26:24 pm
content: There are about a dozen spam messages in the Beginners forum from somebody in India.Jon

author: ataradov
author_rank: Super Contributor
timestamp: June 22, 2024, 02:50:13 pm
content: Just report using the report link. It will be noticed faster that way.
DSP related content? - Page 1
Forum section: electronics / general

author: wobbly
author_rank: Regular Contributor
timestamp: May 31, 2024, 12:13:44 pm
content: Hi all,I'm interested in learning a bit about DSP (Digital Signal Processing) devices and how to use them. I've managed to convince myself that Dave's done at least one video on DSPs in the past but I cannot seem to find it.Did I imagine this or not?

author: RoGeorge
author_rank: Super Contributor
timestamp: June 01, 2024, 05:39:09 pm
content: Scroll down to the very first videos herehttps://www.youtube.com/@allsignalprocessing/videosand start from the ones posted ~12 years ago. They are more brief than 1-2 hour long classes, yet they show most of the important aspects, and without much math. I remember those videos as very helpful, but it depends a lot of one's learning style.If you prefer a reference textbook, search for "DSP by Proakis and Manolakis", though that's a tough one.

author: donnyDA
author_rank: Newbie
timestamp: July 01, 2024, 06:47:54 am
content: This is a bit dated but if you're still looking for info, stop looking for Dave's video and look at the other free contentRick Lyons has a very good textbook.The Khan Academy has good background mathematics on why it works. If you get started without maths and want to understand more, then you do need to study. Euler, Fourier, Trig, Complex numbers, Series etc.I did SP as a part of my diploma years ago at a time when the internet only played about 25% in contributing to self learning. It was mostly printed matter.If you want to take your self learning further you have this incredible opportunity where all the knowledge you need is on the internet.SP is easy once you understand the fundamentals.

author: pcprogrammer
author_rank: Super Contributor
timestamp: July 01, 2024, 07:23:54 am
content: I found this book by Steven W. Smith a good read.https://www.dspguide.com/ch1.htm
EEVblog 1615 - Dumpster Dive HP Pro One PC - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 15, 2024, 08:45:49 am
content: It's been slim pickings in the dumpster room in recent times, will this HP Pro One 400 all-in-one touch screen PC be a winner?

author: Ranayna
author_rank: Super Contributor
timestamp: May 15, 2024, 08:37:43 pm
content: Give it a year, and i think you will find a lot of PCs in the dumpster againWith the end of support for windows 10 looming next year, and windows 11 not being officially supported on older machines, many decent-ish hardware will go the way of the dumpster.A shame, really, but the way it apparently has to work.

author: SiliconWizard
author_rank: Super Contributor
timestamp: May 15, 2024, 09:00:20 pm
content: So MS is triggering a giant wave of e-waste? That isn't going to save the planet. How dare they?

author: Barkuti
author_rank: Contributor
timestamp: June 17, 2024, 12:09:10 am
content: I dropped by somehow due to emails about whateverone trying to log in my account here more or less recently. Other than this…That is a nice, perfectly useable computer; a very nice find indeed. It's, in fact, much newer than the laptop I am still using (which it's gonna turn 18by the end of this year).Upgrading (cough!) that to Windows 11 is pretty feasible; check this:How to install Windows 11 on almost any unsupported PCThere are also many related videos, tools and etcetera on the matter.
Choosing "All" pages of a thread not always possible - why? - Page 1
Forum section: electronics / general

author: astromeier
author_rank: Newbie
timestamp: June 03, 2024, 08:45:18 pm
content: Maybe I missed a specific option in my profile settings...Often there is missing the "All" button to show all pages of a lengthy thread - why?Is there a solution?

author: magic
author_rank: Super Contributor
timestamp: June 03, 2024, 09:49:40 pm
content: There is a limit, it only works on threads which are a few pages long.I don't think it's a profile option. It's not only about protecting your browser from 90 pages of content on one page, but also protecting the server from processing one request for 90 times longer time than normally.

author: astromeier
author_rank: Newbie
timestamp: June 03, 2024, 09:57:46 pm
content: Ah - I understand.Thx a lot

author: Brumby
author_rank: Unknown
timestamp: June 09, 2024, 12:28:16 am
content: Quote from: magic on June 03, 2024, 09:49:40 pmThis ^ ^ ^

author: JacobPilsen
author_rank: Regular Contributor
timestamp: June 13, 2024, 12:21:55 pm
content: I think the limit is 20 pages.It would be nice if subsequently there was an option: "show the first 20 pages at once", "show the second 20 pages at once".It would be a compromise between 1 and 90.

author: magic
author_rank: Super Contributor
timestamp: June 13, 2024, 02:43:02 pm
content: AFAIK the most you can do in this direction is increase the number of post per page in your forum settings. The default is something like 20 or 25, you can get it to 50 or maybe 100.
EEVblog 1619 - Mailbag: Featuring Don McKenzie - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 28, 2024, 11:15:48 pm
content: More Mailbag!00:00 - THE Don McKenzie! and a bonanza of embedded historyhttps://www.dontronics.com/jump-list.htmlhttps://www.dontronics.com/First-pc.html08:44- PBUFF prototype18:38 - Photon, the world's longest battery life camera (Open Source)https://toaster.llc/photon/index.html29:19 - Sanyo ICC-811 Mini Calculator from 197237:33 - Japanese Gadgets: USB to Bluetooth converter + USB Cable Testerhttps://bit-trade-one.co.jp/43:28 - Professional Electronic Design Best Practices Bookhttps://www.amazon.com/Professional-Electronic-Design-Best-Practices/dp/B0C1J56V97/51:08 - Hoppes Brain MT-200 package adapterhttps://hoppesbrain.com/

author: thm_w
author_rank: Super Contributor
timestamp: May 29, 2024, 08:52:27 pm
content: The camera app is somewhat detailed (attached), lets you choose settings. So I guess either the FPGA is writing directly to the SD card, or its using apple specific file system (APFS). Then the USB driver itself is proprietary as well? Wasn't really clear.It is slick but I would be more of a fan of:- Generic mass storage device driver- exfat or whatever universal filesystem sd card, with the .raw image files- A settings.ini file that anyone could modify easilyCool product though.

author: EEVblog
author_rank: Unknown
timestamp: May 30, 2024, 05:50:44 am
content: Quote from: thm_w on May 29, 2024, 08:52:27 pmAgreed.
EEVblog1618 - How To Derive The Equation For Energy In A Capacitor - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 22, 2024, 02:37:53 am
content: How To Derive The Equation For Energy In A Capacitor, E = 1/2 C.V²NOTE: Re-edited from an old impromptu video to remove all unrelated stuff about the dumpster whiteboard I found.

author: fzabkar
author_rank: Super Contributor
timestamp: May 28, 2024, 04:39:46 am
content: Code:I = C . dV/dtP = V . I = V . (C . dV/dt) = C . V. dV/dtEnergy acquired by capacitor during time interval dt is ...dE = P . dt = (C . V. dV/dt) . dt = C . V . dVEnergy E acquired by capacitor as it charges from V = 0 to V = Vf is ..._ V = Vf| ||| C . V . dV|_|V = 0V = Vf= [ 1/2 . C . V^2 ]V = 0= 1/2 . C . Vf^2
EEVblog but not as we know it - Page 1
Forum section: electronics / general

author: Xena E
author_rank: Frequent Contributor
timestamp: May 20, 2024, 06:50:04 pm
content: Genuine screen shot, this has happened a couple of times, (content this time is 'Big Clive' previously 'The Darzis'You Tube getting its panties in a bunch perhaps?

author: .RC.
author_rank: Frequent Contributor
timestamp: May 20, 2024, 11:46:56 pm
content: Has anyone seen Dave and Big Clive in the same room at the same time? hmmmmmmm....

author: 5U4GB
author_rank: Super Contributor
timestamp: May 22, 2024, 10:11:38 am
content: Friend of mine said he was once at a social event where Big Clive was present. Suddenly there was a long unzipping sound and Dave was there and Big Clive had vanished. Not sure what was going on there.

author: SiliconWizard
author_rank: Super Contributor
timestamp: May 23, 2024, 10:19:53 pm
content: The plot thickens.

author: tom66
author_rank: Super Contributor
timestamp: May 28, 2024, 09:03:44 am
content: Of course, you have that now-deleted video where Clive speaks like an Australian, it was up for about 30 minutes before he realised what he'd done.
EEVblog 1617 - Architectural LED Lighting Build + Test - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 19, 2024, 10:25:57 pm
content: Building and testing an architectural wall wash LED Lighting solution.Part 2:Counting LED photons:Datasheets:https://havit.com.au/products/hv9693-6080-deep-square-up-down-aluminium-profilehttps://cdn.shopify.com/s/files/1/1760/2029/files/HV9723-IP20-240-XK-2_Spec_Sheet_JUN23.pdfhttps://cdn.shopify.com/s/files/1/1760/2029/files/HV9783-IP20-168-XK_Spec_Sheet_JUN23.pdf00:00 - Custom architectural LED wall wash lights01:27 - Dual sided aluminimum profile03:45 - 19W/m LED strip06:08 - 32W/m LED strip08:20 - Thermal adhesive backing08:53 - EcoLamp LED Drivers10:36 - Cable manage the design for replacement12:30 - Testing13:10 - LED strip analysis under the microscope15:04 - Bench testing and verifiying the 19W/m spec17:28 - Finding the SMD LED constant current driver chip21:56 - Found it, the Crosschip DS-INK110124:47 - Bench testing and verifiying the 32W/m spec26:52 - Bench testing the dimming30:09 - Testing the driver adjustable dimming with external input

author: nctnico
author_rank: Super Contributor
timestamp: May 19, 2024, 11:13:40 pm
content: For EMC purposes, I'm not a fan of driving LED lamps with PWM. Pulsing sharp edges into long wires isn't a good idea. I always use a constant current switch mode converter which has filtering.

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2024, 04:05:16 am
content: Quote from: nctnico on May 19, 2024, 11:13:40 pmIn this case the controller takes the triac input or the 0-10V input and changes the DC output voltage.
What's the keywords for finding a yellow spudger like Dave has? - Page 1
Forum section: electronics / general

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: May 02, 2024, 01:10:00 am
content: Hello,I tried searching on ebay and aliexpress, but I can't seem to figure out what the correct keywords are. I'd like a set of 10 identical ones if possible.What I have found are blue and orange ones. Yuck, it must be yellow!Thanks!

author: Kim Christensen
author_rank: Super Contributor
timestamp: May 02, 2024, 03:24:18 am
content: Why don't you post a screen grab of Dave using his yellow spudger... Maybe someone will recognize it.

author: bdunham7
author_rank: Super Contributor
timestamp: May 02, 2024, 04:20:12 am
content: Have you tried "yellow spudger" ?

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: May 02, 2024, 12:28:35 pm
content: As requested, here's a picture. I don't think I've ever seen the full thing, just that end.QuoteI'd feel really stupid if I hadn't tried that. That being said, sometimes these search engines can be finicky. You can search for the exact item number and not get results until you give the search engine a bigger hint.

author: kripton2035
author_rank: Super Contributor
timestamp: May 02, 2024, 12:34:33 pm
content: I've found the green ones ...https://www.aliexpress.com/item/1005005322005276.htmlyou can also choose your color by making your own ...https://www.thingiverse.com/thing:5205171/files

author: bdunham7
author_rank: Super Contributor
timestamp: May 02, 2024, 01:29:57 pm
content: https://www.ebay.com/itm/10X-Nylon-Plastic-Spudger-Sticks-Open-Pry-Repair-Tool-iPhone-iPad-Laptop-Yellow-/323178904403?_ul=IN

author: aeberbach
author_rank: Regular Contributor
timestamp: May 02, 2024, 10:09:10 pm
content: https://jonard.com/alignment-tools-probe-picks?v=218

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: May 03, 2024, 01:26:06 am
content: @bdunham7 That is the physical form of the item. And certainly, the keyword "yellow" is in the description. But if you take the picture and put a yellow and an orange line next to them you can clearly see that these are not yellow.That's CSS orange and yellow that I'm using. It has nothing to do with my palette or program that I'm using to "paint" with.

author: Brumby
author_rank: Unknown
timestamp: May 03, 2024, 06:45:35 am
content: Quote from: ballsystemlord on May 03, 2024, 01:26:06 amYou could be making a fundamental mistake here.Firstly, a lot of eBay photos are not properly illuminated, let alone correctly white balanced. Yellow things looking orange is an easy thing to do. Have a look at the last photo of the set and you will clearly see a yellow colour. It does have an orange fringe, but that is what happens with poorly lit yellow items.I have found that accurate colour on eBay is the exception, not the rule. See here for more info on such photography:Re: How-to make decent photographs for forum posts/articles/publications?
EEVblog 1627 - Electronex: Engineering Consultancy with Xentronics - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: July 01, 2024, 12:56:29 am
content: A talk with Scott Williams from Xentronics about freelancing and running a design consultancy business.https://xentronics.com.au/The Amp Hour Talk 1:https://theamphour.com/624-design-manufacturing-consulting-with-scott-williams-from-xentronics/Talk 2:https://theamphour.com/645-moving-down-the-stack-with-scott-williams/
RIGOL  DS1064B Flash to memory  S29GL064N90TFI04 - Page 1
Forum section: electronics / general

author: prieten
author_rank: Newbie
timestamp: June 22, 2023, 02:18:42 pm
content: Hello,I'm having problems with a RIGOL DS 1064B oscilloscope, I upgraded to a newer version. After this upgrade the oscilloscope does not work anymore and the USB ports are no longer active). So on the USB ports I can no longer try anything to downgrade.Please if you have a software version for flash memory S29GL064N90TFI04 for this type of oscilloscope, I mention that the hardware version is DB4.5.After this upgrade it shows me software version 012.01.00.04.01, I don't remember well but it seems like the version it had before was 02 or 03.I can rewrite the firmware with the programmer in the flash memory S29GL064N90TFI04.Thanks to those who can help me, from the bottom of my heart.

author: Aigars535
author_rank: Newbie
timestamp: April 14, 2024, 09:54:11 pm
content: Hi. I have a 1064b but with the latest firmware. Everything works. If you still need firmware, please tell me what and on which pinal it can be read and I will do it when I have free time.
AX6000 teardown photos - Page 1
Forum section: electronics / general

author: msuffidy
author_rank: Frequent Contributor
timestamp: April 11, 2024, 03:01:10 pm
content: I found some photos of a AX6000 teardown:https://www.hkepc.com/17630/%E6%94%AF%E6%8F%B4_Multi_Gigabit_%E9%80%A3%E6%8E%A5_TP-LINK_Archer_AX6000
[EEVblog2] Returned BM036 Clamp Meter Investigation - Page 1
Forum section: electronics / general

author: golden_labels
author_rank: Super Contributor
timestamp: March 19, 2024, 02:42:57 am
content: The PCB is covered with white silkscreen. What’s the purpose? Making understanding the circuit harder? Or what?

author: golden_labels
author_rank: Super Contributor
timestamp: March 19, 2024, 06:28:30 am
content: Part 2:Is it only my impression, or did the specimen got worse from the previous video? It feels like the value went even higher.---edit:Nope, my eyes are not deceiving me. The value is going up in Dave’s lab. Here are histograms of 21 values from each video:It seems that the value is actually higher even after tearing it down.Yesterday user shapirus reported aBM037 showing absurdly high values in crest mode. If I understand correctly, BM036 and BM037 are very similar meters. That gave me an idea: what if Dave’s BM036 is experiencing a similar issueandis stuck in crest mode? I imagine noise when switching to DC may be recognized as inrush peak and reported. That doesn’t explain why the value is slowly rising.

author: dexters_lab
author_rank: Unknown
timestamp: March 19, 2024, 10:32:24 pm
content: Quote from: golden_labels on March 19, 2024, 06:28:30 amtotally, i noticed this too... it has increased over the two videos and importantly since the customer sent it in.there's a component failing surely?
uCurrent Availability - Page 1
Forum section: electronics / general

author: Pack34
author_rank: Frequent Contributor
timestamp: October 06, 2016, 02:54:35 pm
content: I'm going to be in the need to reliably measure low current in the not-so-distant future. I was hoping on picking up a uCurrent to make my job easier, but it's out of stock.Is there another batch coming in, or is the product discontinued?

author: riyadh144
author_rank: Unknown
timestamp: October 12, 2016, 07:12:08 am
content: you could always make it yourself, it is open source hardware.

author: EEVblog
author_rank: Unknown
timestamp: October 12, 2016, 08:01:16 am
content: Just got more in, will update my stock level.

author: gsrokmix
author_rank: Contributor
timestamp: October 12, 2016, 08:42:25 pm
content: I'm looking forward to getting one, hopefully I'm not too late!

author: Fab6657
author_rank: Contributor
timestamp: April 06, 2024, 07:58:33 am
content: Hello Community,regarding availability of the µCurrent, I am looking in particular about the box used. Inside I can read the box is produced in Australia.Is the brand whith these boxes also available in Europe ?ThankFabrice

author: EEVblog
author_rank: Unknown
timestamp: April 06, 2024, 09:35:34 am
content: Quote from: Fab6657 on April 06, 2024, 07:58:33 amAFAIK the "jiffy box" was an Australian specific thing, but there might be compatible version elsewhere.

author: Fab6657
author_rank: Contributor
timestamp: April 06, 2024, 10:38:57 am
content: Thank Dave for this quick feedback.Actually in Europe we have the TEKO box available but the deepth of your box was better for my project.https://www.teko.it/en/products/family/TC/series/coffer-aAnyway, maybe I will find something one day easy available in my region. Will search...
RSS feed is broken by rate limiter - Page 1
Forum section: electronics / general

author: ataradov
author_rank: Super Contributor
timestamp: March 16, 2024, 06:14:31 pm
content: Last night RSS feed was broken by rate limiter. I have it set to 15 minutes poll time, does not sound like a lot, yet I get "Until you rate limit your crawler, you can get lost!" response. First of all, seems pretty rude. But then - what is the maximum rate then?I understand that this was probably introduced to combat AI crawlers or something like that, but for RSS feed, this limit seems unreasonable.

author: ataradov
author_rank: Super Contributor
timestamp: March 16, 2024, 08:43:05 pm
content: Well, I switched it to hourly and it did not help. So, it looks like may be a ban is by IP?Also, this probably belongs in "News/Suggestions/Help".

author: ataradov
author_rank: Super Contributor
timestamp: March 17, 2024, 01:03:48 am
content: Yeah, I think it is IP ban. I switched to 4 h update, but still no response. I tried to download a lot from my home PC, and there does not seem to be a limit. The request here would come from Amazon IP range (self hosted RSS reader), so I guess it is IP ban.This is not great. RSS is the way I keep track of the posts.

author: ataradov
author_rank: Super Contributor
timestamp: March 21, 2024, 08:21:19 pm
content: Just in case anyone experiences the same issue (unlikely, I know), passing the feed though feedburner solves it, since now it is a google IP that does the request.

author: gnif
author_rank: Unknown
timestamp: April 01, 2024, 10:06:34 pm
content: Quote from: ataradov on March 16, 2024, 06:14:31 pmWe were seeing 20k hits per IP every hour, coming from AmazonBot. As Amazon refuse to rate limit their crawlers we had to block them.See:https://developer.amazon.com/amazonbotSeems we need to be more specific about the IPs we block here if people are using a feed that comes from Amazon also. I will look into this as this was not the intention here.
RF video's? - Page 1
Forum section: electronics / general

author: JoeyG
author_rank: Regular Contributor
timestamp: March 12, 2024, 12:47:34 am
content: Surely Dave has enough RF equipment to cover the RF spectrum.Could start 1MHz ~ 500MHz in to a 50ohm load? or Receiver circuits?

author: RoGeorge
author_rank: Super Contributor
timestamp: March 12, 2024, 07:19:57 am
content: Probably yes. Meanwhile, for RF videos you may want to try these YouTube channels:https://www.youtube.com/@w2aew/videoshttps://www.youtube.com/@Thesignalpath/videos

author: pdenisowski
author_rank: Super Contributor
timestamp: March 12, 2024, 10:31:36 am
content: Or some of thesehttps://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8
EEVblog 1603 - Colas Wattway Solar Roadways is DEAD - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 04, 2024, 12:57:56 am
content: The 1km Colas Wattway Solar Roadway in Normandy in France is finally being scrapped.Press F in the chat.€5M of taxpayer money down the drain. That money could have bought a 5MW commercial solar farm that produced 15 times the output power, and lasted decades longer.Reference links:https://www.auto-moto.com/en-bref/cette-route-solaire-qui-a-coute-5-millions-d-euros-va-etre-demantelee-30624https://actu.fr/normandie/tourouvre-au-perche_61491/on-s-attendait-a-rencontrer-des-problemes-la-route-solaire-de-tourouvre-au-perche-une-idee-pas-si-lumineuse_53438905.htmlhttps://time.com/4616912/solar-panel-france/https://www.theguardian.com/environment/2016/dec/22/solar-panel-road-tourouvre-au-perche-normandyhttps://www.forbes.com/sites/johnparnell/2019/08/21/frances-solar-highway-was-always-a-road-to-nowhere/?sh=783cb5c971b6https://www.wired.co.uk/article/france-solar-panel-roadshttps://www.businessinsider.com/first-solar-road-france-failure-photos-2019-8https://www.colas.com/en/innovation/greater-mobility-lower-impact/https://mymodernmet.com/france-wattway-solar-road/https://www.marketwatch.com/guides/solar/solar-farm-cost/#:~:text=Solar%20Project%20Size&text=At%20an%20average%20price%20of,the%20intention%20of%20selling%20electricity.https://www.popularmechanics.com/technology/infrastructure/a28720252/french-solar-road-failure/https://www.digitaltrends.com/cars/frances-first-ever-solar-panel-road-appears-to-have-some-serious-issues/https://www.wattwaybycolas.com/en/references/photos.htmlTechnical specs:https://www.wattwaybycolas.com/media/documents/documents-en-anglais/dp-wattway-pack-gb.pdfMap:https://www.google.com.au/maps/@48.5872378,0.647139,3a,75y,189.86h,63.17t/data=!3m6!1e1!3m4!1sRGiblnJFqgFm2wye5_F_1Q!2e0!7i16384!8i8192?entry=ttuThe near 18 year grift of Solar Freak'n Roadways:https://www.startengine.com/offering/solar-roadways

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 04, 2024, 01:06:34 am
content: Yes.But it makes money circulate.

author: romelec
author_rank: Contributor
timestamp: March 04, 2024, 11:35:56 pm
content: There are still a few ones in France, for exemple here on a parking lot, with half of the panels missing and on the shadow of the buildingsThey even put some battery storage to light up the "castel" at nighthttps://maps.app.goo.gl/RQxBnNDbA7c2vCKL9
EEVblog 1601 - How VFD (Vacuum Fluorescent) Displays Work - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: February 27, 2024, 03:39:30 am
content: How VFD (Vacuum Fluorescent) Displays Work.Extracted from a hacking video #717:

author: floobydust
author_rank: Super Contributor
timestamp: February 27, 2024, 04:23:02 am
content: I had a moment rejuvenating a 34401a VFD, connected power to it and it didn't light up. Applied filament power and +30V on the segments, grid floating.I expected segments to light (normally on unless the grid biased negative) but it stayed dark.Turns out the "grid" works like a screen grid, not a control grid.I do the usual filament bake off up to 2x Vfil absolute max, and then also a grid bake off was needed. There is some buildup on it as well.

author: Ian.M
author_rank: Super Contributor
timestamp: February 27, 2024, 06:33:02 am
content: Useful VFD links:Futaba's VFD Characteristics & Operation guide AN-E-1103Ahttp://www.vwlowen.co.uk/arduino/vfd/VFD-Application-Note.pdfNoritake's A Guide to Fundamental VFD Operationhttps://www.noritake-elec.com/technology/general-technical-information/vfd-operation

author: ksio89
author_rank: Contributor
timestamp: February 28, 2024, 04:45:23 pm
content: I had a Sony MHC-DX7 shelf stereo/mini system that bought in 2000 or 2001, was the display a VFD or just an LCD one?

author: floobydust
author_rank: Super Contributor
timestamp: February 29, 2024, 07:17:21 pm
content: VFD's are superiour for readability in sunlight and low temp (below -30°C) I used them a lot in industrial panels that are located outdoors. Instead of low temp fluid and heaters in LCD's.Noritake iTron/Futaba were kings making the best VFD's but LCD's took over and had the lower power consumption, you don't need a few watts for the filaments.Interesting theKorg Nutube6P1 (by Noritake) is just a VFD as a low voltage twin triode. They're just exploiting the non-linearities I think THD 1-20% very fuzzy and perhaps corny.Sony MHC-DX7 uses a VFDhttps://elektrotanya.com/sony_mhc-dx7.pdf/download.html#dl

author: thm_w
author_rank: Super Contributor
timestamp: February 29, 2024, 10:31:13 pm
content: Quote from: ksio89 on February 28, 2024, 04:45:23 pmThe manual calls it "fluorescent indicator tube" so its some form of VFD.

author: Ranayna
author_rank: Super Contributor
timestamp: March 01, 2024, 01:47:28 pm
content: May i ask what led you to extracting this part from an old video?Not that i mind really, it was a bit of a "blast from the past"And i remembered many points from the original video.Is it just to make this aspect easier to search for and find this video?
EEVblog 1600 - Rouute: Road Based Energy BUSTED - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: February 23, 2024, 03:19:39 am
content: Rouute: Road Based Energy! Harvest kinestic energy from cars using speed bumps. Will this save the planet? Do the numbers add up?00:00 - Rouute Road Based Energy01:58 - Discount Morgan Freeman narrates the video03:21 - UN Goal 7 compliant04:40 - The founder explains and shows a testing video06:37 - Let's look at their info pack09:03 - Can we get serious now?11:19 - Reminds of PaveGen that is still gaining millions in funding for energy harvesting pavements12:41 - You canna' change the laws of physics Captain!13:30 - Let's calculate the Kinetic Energy viability using their numbers14:34 - They seem to be out by an order of magnitude at least...16:15 - Converting kinetic energy into electrical energy is just energy THEFT on flat roads19:57 - It works, but is all but impractical in most circumstances.

author: EEVblog
author_rank: Unknown
timestamp: February 23, 2024, 07:52:58 am
content: Discuss here:https://www.eevblog.com/forum/dodgy-technology/rouute-road-based-energy/
Read aloud in Edge - Page 1
Forum section: electronics / general

author: xavier60
author_rank: Super Contributor
timestamp: February 22, 2024, 08:48:39 am
content: I used to be able to start it at the cursor location. Now it always starts at the beginning of the page.

author: xavier60
author_rank: Super Contributor
timestamp: February 22, 2024, 09:25:12 am
content: Just notice that it doesn't happen on all pages.This one starts at the top,https://www.eevblog.com/forum/repair/faulty-brymen-(857)/
Where do you store your crimp tools - Page 1
Forum section: electronics / general

author: komradebob
author_rank: Contributor
timestamp: March 11, 2024, 04:48:58 pm
content: Greetings,Even after 30 years at my current, altogether too small, workbench, I find that the one tool, or group of tools, that just doesn't have a 'natural' home is crimp tools. I have probably a dozen of them for various connectors, pins, and whatnot. Tried a shoebox sized bin (which I buy when they go on sale a couple dozen at a time) full of them, but they get used so infrequently that the bin rotates to the bottom of a stack that is then difficult to get them out from under whan I need them.The one solution I have that I like is putting the tool in with the connectors that they are for, but that only works for a limited set, e.g. there are crimp tools that covermanydifferent pins.There are too many to go into the on desk tool rack, etc, complain, whinge, karp, poor me.Anyone ever come up with a decent solution?

author: David Hess
author_rank: Super Contributor
timestamp: March 11, 2024, 05:28:22 pm
content: I keep my crimp tools in a separate small duffel style tool bag, but common connectors like Molex and Powerpoles have their own separate parts drawers or boxes.

author: nctnico
author_rank: Super Contributor
timestamp: March 11, 2024, 06:48:15 pm
content: Good to read I'm not the only one with this problem. Though I haven't found a good solution yet.

author: audiotubes
author_rank: Regular Contributor
timestamp: March 11, 2024, 06:52:36 pm
content: For me, pliers in general are the road to storage chaos. Crimp tools are just a subcategory of pliers

author: komradebob
author_rank: Contributor
timestamp: March 11, 2024, 07:09:54 pm
content: Small pliers and handle tools are not too bad. I have a laser cut holder for Frequently Used Tools:

author: David Hess
author_rank: Super Contributor
timestamp: March 11, 2024, 07:50:24 pm
content: Quote from: audiotubes on March 11, 2024, 06:52:36 pmMy small pliers, cutters, and strippers are in a separate small duffel style tool bag. I keep my crimpers separate because a single bag with all of them would be inconveniently heavy, and I use the crimpers a lot less often. Big pliers and cutters go in a large portable tool box with drill bits and such.
EEVblog 1593 - 16kV ESD Tester REPAIR - Part 2 - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 17, 2024, 10:07:06 pm
content: Repairing the Haefely Trench PESD-1600 ESD Tester, plus some testing and discussion of the IEC 61000-4-2 standard.00:00 - Repair of the Haefely Trench PESD-1600 tester01:40 - Special snowflake rotary encoder test03:15 - Laugh at Dave as he solders before looking05:06 - Nothing worse than a floppy pin07:09 - Soldering the switches11:01 - The reassembly nighmare18:52 - Does it work?19:53 - Battery pack replacement22:27 - ESD Testing that's good enough for Australia

author: chriswebb
author_rank: Unknown
timestamp: January 18, 2024, 05:54:09 am
content: Would it be possible to measure the output without the expensive target? Like with only a dmm or maybe even a scope or spectrum analyzer with proper protection?

author: EEVblog
author_rank: Unknown
timestamp: January 18, 2024, 06:26:57 am
content: Quote from: chriswebb on January 18, 2024, 05:54:09 amSure, make a 2 ohm load with as much bandwidth and linearilty as possible. Not hard to do, but full charactertisation would be the hard part.And of course you need a very high bandwidth scope and associated attenuators and cabling.I might take a crack at it...

author: PartialDischarge
author_rank: Super Contributor
timestamp: January 18, 2024, 01:15:48 pm
content: If you are building something for testing, the ground plane in esd setup has to be connected via a 1Mohm (2x470k) resistor back to the esd gun

author: EEVblog
author_rank: Unknown
timestamp: January 19, 2024, 05:43:44 am
content: Quote from: PartialDischarge on January 18, 2024, 01:15:48 pmIt's the horizontal ground plate that need to be connected via 1M to the floor ground plate. Same for the vertical ground plate.
EEVblog 1589 - CCD Scanner Array - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 30, 2023, 09:36:18 pm
content: A closer look at the scanner array head from the dumpster FAX machine teardown.00:00 - Linear Scanner Array04:40 - CCD sensor grouping08:24 - The optical zebra strip11:30 - Under the x400 Olympus microscope

author: Kleinstein
author_rank: Super Contributor
timestamp: December 30, 2023, 10:16:23 pm
content: The optical zebra strip is likely settung the individual pixels and may work as mico-lenses. One kind of needs an optic to focus the light - otherwise the picture would spread out too much with the distance. The fax standard has a standard resolution of some 200 dpi for the fine mode. So one could check the distances.The sensor part looks like it is made of several separate chips and the strage extra dots may be just there for alignment during the placement of the chips.It looks like the sensor is not an old style CCD, but likely more a CMOS based sensor. A CCD would be simpler, with less parts directly linked to the sensors. This looks a bit like some amplifier per pixel.

author: langwadt
author_rank: Super Contributor
timestamp: December 30, 2023, 10:56:15 pm
content: could the yellow dots be phosphor that get excited by UV LEDs ?

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: December 31, 2023, 03:53:01 am
content: @Dave , If it's not too much trouble, maybe you could zoom in on one of those strange square chips with your Olympious microscope and either we or you could take a guess based on that as to what those chips are.

author: thm_w
author_rank: Super Contributor
timestamp: January 02, 2024, 10:31:05 pm
content: Quotes from youtube:QuoteQuoteQuote from: langwadt on December 30, 2023, 10:56:15 pmYou mean the post it note that was explained in the video?

author: rs20
author_rank: Super Contributor
timestamp: January 06, 2024, 03:21:30 am
content: I know this is a long shot, but could someone please post either:A dimensioned/engineering drawing of the rod lens array/"optical zebra strip"or, reasonably accurate measurements of any rod lens array they have access to via a dumpster: specifically, the diameter of the rods, the centre-to-centre pitch of the rods, the length of the rods, and the working distance at each end (the distance from the rods to the paper; the distance from the rods to the CCD.)or, a physical actual zebra strip for me to play with (Sydney, Australia)I'd be most appreciative!Context: I've got a reasonably good optical simulation of how they work going (it's truly miraculous and wild what gradient refractive index optics can do!), but it's pointless doing simulations with made-up dimensions.
Which EEVblog episode discussed a bench DMM relay switching problem? - Page 1
Forum section: electronics / general

author: ballsystemlord
author_rank: Frequent Contributor
timestamp: December 11, 2023, 12:43:09 am
content: Hello,I cannot for the life of me find this on yt. A YT'er, Dave, I'm sure, made a video which, in part, talked about a range switching problem where bench DMMs rapidly switch their relays thus causing them to wear out.I'm interested in this content because I'm even now reviewing a DMM Dave hasn't gotten to and I want to properly test it for this problem.Thanks!