hybridfree/eevblog-posts huggingface dataset:
Ontology and epistemology, where to start - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: December 10, 2019, 05:06:11 pm
content: Many times bumped into concepts related with ontology and/or epistemology, for example when interpreting results/measurements, uncertain reasoning, dealing with the unknown, etc., so mainly coming from the scientific realm. Yet, the concepts found in epistemology and ontology seem to be much broader, so I think might worth a closer look, maybe they even deserve a detailed study.Online search doesn't help much when one knows nothing about a subject.Any ideas where to start, or what to study, please?

author: Benta
author_rank: Super Contributor
timestamp: December 10, 2019, 07:02:06 pm
content: An engineering site is probably the wrong place to ask this question. Just sayin'.

author: bsfeechannel
author_rank: Super Contributor
timestamp: December 11, 2019, 07:20:54 am
content: Not exactly on epistemology or ontology, but perhaps related:"The Outer Limits Of Reason" by Noson S. Yanofsky. The review says: "An exploration of the scientific limits of knowledge that challenges our deep-seated beliefs about our universe, our rationality, and ourselves."I read it a few years ago and found it very enlightening.

author: I wanted a rude username
author_rank: Frequent Contributor
timestamp: December 16, 2019, 02:56:04 am
content: This recent Scientific American article on who really discovered the first exoplanetis also a good examination of what is sufficient grounds to reallyknowsomething.

author: German_EE
author_rank: Super Contributor
timestamp: December 18, 2019, 08:00:52 pm
content: Where to start?First I looked up ontology and epistemology in a good dictionary, these two are my words of the day. Then I decided to walk away from this discussion as mutual navel gazing never improves anything.

author: RoGeorge
author_rank: Super Contributor
timestamp: December 18, 2019, 09:35:30 pm
content: So far I got theseLindley D.V.: Understanding uncertainty, 2006Daniel Klein: Every Time I Find the Meaning of Life They Change It, 2015Noson S. Yanofsky: The Outer Limits of Reason - What Science, Mathematics, and Logic Cannot Tell Us, 2013and start reading the first one. Will see.

author: bsfeechannel
author_rank: Super Contributor
timestamp: December 18, 2019, 11:45:15 pm
content: C'mon guys, what's wrong with a little philosophy? Here are two videos on the ultimate ontological questions "What is everything?" and "What is nothing?" for the rest of us.
New comercial EXOSKELETON suit, for real...  20x your strength. - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: December 11, 2019, 06:06:32 pm
content: Great! How much?

author: BrianHG
author_rank: Super Contributor
timestamp: December 11, 2019, 06:16:37 pm
content: Quote from: RoGeorge on December 11, 2019, 06:06:32 pm100K$ USD / year lease. Beginning in 2020.

author: eti
author_rank: Super Contributor
timestamp: December 18, 2019, 05:03:38 am
content: We have these rather successful things called cranes and fork lifts - they've been around quite some time, and seem to do the job rather well, and don't exactly need much "improving". If you fancy being crushed and your spine snapped when one of these - ahem - "cool" - things breaks down, have at it!
unread topics in forums - Page 1
Forum section: electronics / general

author: westfw
author_rank: Super Contributor
timestamp: December 11, 2019, 08:35:12 am
content: For the last week or so, the links on the main forum pages that used to take me to "unread" and "new" topics have disappeared.I don't recall exactly what the names were, but I really miss the one that would show me followups to threads I was participating in, but hadn't seen yet...What happened? Is this by choice?(Same behavior on Mac using Firefox or Chrome, Windows using Chrome or Brave, and iPad using Safari, BTW...)

author: tggzzz
author_rank: Super Contributor
timestamp: December 11, 2019, 08:39:22 am
content: There's an invisible button just to the right of the strapline "A Free & Open Forum For Electronics Enthusiasts & Professionals".That misdesign was anticipated ~40 years ago...“It’s the wild colour scheme that freaks me,” said Zaphod whose love affair with this ship had lasted almost three minutes into the flight, “Every time you try to operate on of these weird black controls that are labelled in black on a black background, a little black light lights up black to let you know you’ve done it. What is this? Some kind of galactic hyperhearse?”― Douglas Adams, The Restaurant at the End of the Universe

author: westfw
author_rank: Super Contributor
timestamp: December 11, 2019, 06:06:06 pm
content: Thanks! Found it!Suspect I accidentally hit it on the iPad. So kind of it to remember and propagate.

author: GlennSprigg
author_rank: Super Contributor
timestamp: December 12, 2019, 12:59:36 pm
content: Quote from: tggzzz on December 11, 2019, 08:39:22 amHa!!! I'm glad there is at least some other "Douglas Adams" fans out there !We could start a new Forum with his funny quotes alone...

author: tggzzz
author_rank: Super Contributor
timestamp: December 12, 2019, 03:35:04 pm
content: Quote from: GlennSprigg on December 12, 2019, 12:59:36 pmI recorded the original transmission on 1/4" mag tape. Unbeatable - accept no substitutes.Well, the nearest acceptable substitute was the Ken Cambell 1980 stage show in the Rainbow Theatre. I don't know why it is described as "infamous", because I thought he had a decent way of creating Zaphod's second head. None of the crap prostheses, oh no - just have two actors inside the same jumpsuit. Think of a pantomime donkey, but with both heads visible

author: GlennSprigg
author_rank: Super Contributor
timestamp: December 17, 2019, 12:51:43 pm
content: Quote from: tggzzz on December 12, 2019, 03:35:04 pmI've also got a book of the full original radio show transcripts. Lots of behind-the-scene stuff !!His 'idea' for the books came while backpacking around Europe. He was flat on his back, pissed,lying in a field looking up to the night sky, with a copy of "The hitchhikers guide to Europe" on his lap.
QMTECH not on Aliexpress anymore? - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: December 16, 2019, 02:55:09 pm
content: QMTECH sells a few FPGA dev. boards that are pretty cheap and decent. They seem to have disappeared from Aliexpress lately. Can anyone confirm and does anyone have any information about this? (They have also modified their website lately and it's currently a complete mess.)

author: langwadt
author_rank: Super Contributor
timestamp: December 16, 2019, 02:59:19 pm
content: https://qmtechchina.aliexpress.com/store/4486047?

author: SiliconWizard
author_rank: Super Contributor
timestamp: December 16, 2019, 03:46:56 pm
content: Thanks, it's Aliexpress's search that must be borked then, at least over here.
Mouser.com had great customer service! A happy story... - Page 1
Forum section: electronics / general

author: t1d
author_rank: Super Contributor
timestamp: December 17, 2019, 12:11:35 am
content: I ordered electronic supplies from Mouser.com. They filled the order and turned it over to UPS, on the December 11th. UPS failed to ever assign the package number and tracking shows no movement.Mouser did not point the finger at UPS and tell me to have them trace the package. No, Mouser stepped up, immediately involved upper management and is re-shipping my order at no charge. They put a cherry on it by adding upgraded, two-day delivery... all for free. All for a small $30+ order. Yeah, I'm a happy camper...Mouser has genuine OEM parts, better pricing, no minimum order and cheap/$3.99 shipping. My brother uses them, too. Obviously, my recommendation is inferred. Thought you might like to know that their customer service is top-rate, to boot. Give them a try.(No, I am not affiliated with Mouser in any way. With all the bad news, I thought it important to share some that's good, that's all.)

author: tooki
author_rank: Super Contributor
timestamp: December 17, 2019, 06:31:20 am
content: Great that Mouser took the initiative and expressed a replacement out to you. FYI, generally speaking, the recipient cannot request a trace. The shipping contract is with the sender, and they are the ones who would have to file a claim with the courier.

author: rdl
author_rank: Super Contributor
timestamp: December 17, 2019, 04:13:57 pm
content: I've bought from Mouser for over 15 years and their service has always been good. They are fantastic at fixing things when something goes wrong.I once placed an order for a small number of items. Everything showed as being in stock, but one item actually wasn't. They shipped the order incomplete and back-ordered the one missing item. They received new stock of the missing item in just a day or so, and sent mine out immediately by FedEx at no charge.The "back-ordered" item actually arrived before the original shipment.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: December 17, 2019, 05:51:29 pm
content: Yup, the mainline distributors are pricey (Mouser, Digikey, Arrow), but their customer service excels, and they can ship parts fast. Think the worst I've had is a few components that were confused by type (ordered X, invoice and packet labeled X, packet contained Y); they're probably about 3 sigma on that, which is typical for hand pickers I suppose.Tim
Repainting an Instrument Case - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: December 13, 2019, 08:18:32 pm
content: I have a piece of test equipment that needs the case repainting. I know how to strip it, I have a color match but the surface texture of the old paint is a puzzle. Running my fingers across the surface it's not smooth, it has a slightly rough surface, not as rough as the old Hammerite paint that produced actual wrinkles but something similar to art paper or perhaps canvas.How can I reproduce a surface finish like this?

author: Tomorokoshi
author_rank: Super Contributor
timestamp: December 13, 2019, 08:43:53 pm
content: See if there is a texture spray at either a paint shop or an art shop. Spray that on first, then spray over with the color. Would this be similar to the texture on some Tektronix equipment, or like the "leather" texture on some HP equipment?

author: duak
author_rank: Super Contributor
timestamp: December 14, 2019, 11:52:26 pm
content: I've been able to get a textured surface by patting the paint with a sponge after it's been sprayed and is thickening. It takes a bit of experimentation. Some paints may not work well or even dissolve the sponge. Glossy paints have a leveling agent so it's better to use a flat type.To get a wrinkled finish, spray a lacquer paint on a dried enamel finish. The carrier in lacquer paints is a strong solvent that dissolves the enamel and if conditions are right forms wrinkles. If not, you get bumps or waves.

author: German_EE
author_rank: Super Contributor
timestamp: December 15, 2019, 10:28:17 am
content: Thank you for the supplies but I now have a solution. A local car body shop has a textured paint that is meant to be applied to car bumpers after repair and the finish is very close to what I am looking for. The color is wrong, but a couple of layers of the correct shade on top of the textured paint should look OK.

author: SeanB
author_rank: Super Contributor
timestamp: December 15, 2019, 05:48:40 pm
content: That textured paint is a PVA paint, applied with a foam roller. Works quite well, and is reasonably durable as well, though the covering coats are not as resistant as if they are applied to bare metal. You might want to try just using the foam roller and your mixed paint, though your case could also have a powder coat giving the textured finish, or even a stick on vinyl.
Need help to identify the SMD component  - Page 1
Forum section: electronics / general

author: White Rabbit
author_rank: Newbie
timestamp: December 03, 2019, 09:50:26 am
content: Hello,I have a question about SMD component, looks like diode, but not it.I tested conponent with multimeter in diode check mode, with 1mA and 0.1 mA current (I have Fluke 8846A), voltage drop in both way is 0.22 V.This component used in Siemens module for absolute encoder interface.I have a 3 new not used modules, so component must be not brocken.Marking is 103 in first row and 15m in second.Look to the photo

author: senso
author_rank: Frequent Contributor
timestamp: December 03, 2019, 10:35:23 am
content: Tantalum capacitor?

author: Fraser
author_rank: Super Contributor
timestamp: December 03, 2019, 10:59:16 am
content: 0.01uf Tantalum capacitor.Note that you have to be careful if replacing a tantalum capacitor. You need to select one with adequate voltage rating and design. Some are better able to cope with ripple voltages than others. Just look at manufacturers data sheets for all the information you need. KEMET is a very well known brand and provides data sheets on lineFraser

author: White Rabbit
author_rank: Newbie
timestamp: December 03, 2019, 11:54:31 am
content: Thanks!Why do you think so this is capacitor? 0,22V drop? Hmmm...Which another component is it may be?I will try to draw schematics, this smd in series with LED and resistors, and try to make best photo

author: senso
author_rank: Frequent Contributor
timestamp: December 03, 2019, 12:50:13 pm
content: Remove it from the board and measure it alone, and not in circuit, then you will know if its a cap, or a diode, or a zener.

author: White Rabbit
author_rank: Newbie
timestamp: December 15, 2019, 09:23:39 am
content: Quote from: senso on December 03, 2019, 12:50:13 pmYes, of course, I did this firstly.Oh yes, I found it! This is not zener, or tantal cap! May be this information will be usefull.This is current regulation diode from Semitec! 10 mA current (103 marking on body). I removed it from board and try with 9V battery in series and measure a current flow, it was be about 10 mA.Datasheet attached.Also it can be in glass body, with color circles.

author: Fraser
author_rank: Super Contributor
timestamp: December 15, 2019, 12:03:41 pm
content: Well I learnt something useful today ! Thank youFraser
Good looking flywire circuit that you known of... - Page 1
Forum section: electronics / general

author: romhunter
author_rank: Regular Contributor
timestamp: December 14, 2019, 08:42:16 am
content: I've been surfing the net for a few days in my spare time, looking for any circuit fabrication method that I find more attractive than the plain old PCB or perfboard, the kind with the ratnest. So I came across this:a combination of breakout board, perfboard, flywire and good mechanical construction. Anyone got other circuit that you deemed "good looking"? Please share it with me so I can get away from PCB (for a small number of hobby project only).

author: NiHaoMike
author_rank: Super Contributor
timestamp: December 14, 2019, 01:11:10 pm
content: What about LED art made by soldering pieces of wire together?
Road bridge suggestion, as per twitter post request - Page 1
Forum section: electronics / general

author: Decoman
author_rank: Regular Contributor
timestamp: December 14, 2019, 11:56:22 am
content: Sorry, I don't have a twitter account. Dave solicited on twitter very recently for a bridge photoshopped into a photo. I used GIMP (free software, works nicely I think) A pro would maybe use Fusion 7 (I think it was) for compositing, but I don't have the free version installed. They have since removed the free Fusion option on their website, maybe a pr stunt from a previous time a long time ago, a few of years or so.Hopefully this won't be considered widly off topic in the general section, couldn't find any general image thread (not saying that is a good idea, wasting everybodys time watching it, but that would be a category).This is.. sort of a road bridge, isn't it?Only bridge photo I could find online, with the proper perspective.
Speedy Cutover Service - Page 1
Forum section: electronics / general

author: Psi
author_rank: Super Contributor
timestamp: December 13, 2019, 02:09:39 am
content: Skip to 3:00 if you're in a hurry, but you wont know whats happening.

author: jmelson
author_rank: Super Contributor
timestamp: December 13, 2019, 07:46:04 pm
content: Switching over a rotary selector office to a #3 ESS?Jon

author: Shock
author_rank: Super Contributor
timestamp: December 13, 2019, 07:59:24 pm
content: Cut complete! Couple of girly screams and out of breath whistles at the end. It's quite amusing. I like that they said no shorts and you can see sparks fly (probably from a short), I guess though it would be an acceptable risk for a fast transition.Have the next group checking fuses heheh. They also lost a nice chunk of time there at the end from premature cut abandination. The screw ups would be entertaining.

author: Red Squirrel
author_rank: Super Contributor
timestamp: December 14, 2019, 03:26:32 am
content: Fastforward to now, and we're still on DMS10/100/200 switches at my work. Those old style digital switches were built solid considering how long they're lasting. The one in my building has an uptime longer than I've been alive. It was put in the late 70's I believe. My office is where the stepper used to be.

author: eti
author_rank: Super Contributor
timestamp: December 14, 2019, 03:31:43 am
content: Quote from: Psi on December 13, 2019, 02:09:39 amIf someone is in THAT much of a hurry, then they have more pressing issues to deal with than fannying around watching YouTube videos
#EEVBlog IRC channel on irc.austnet.org -- Update - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: December 08, 2018, 03:42:23 am
content: For those of you who might not have access to the supporter's lounge, the EEVBlog has an IRC channel over on Austnet.You can connect to it one of two ways, either use your favourite IRC client such asHexChatand connect to the serverirc.austnet.organd join the#EEVBlogchannel.Alternatively you can use theweb chat functionand join the discussion straight from your web browser (a password or registered account is not needed).We are working on other functionality behind the scenes so watch this thread for updates very soon!

author: orzel
author_rank: Regular Contributor
timestamp: December 02, 2019, 04:17:46 pm
content: This seems dead, isn't it ? It doesn't work when usinghttps://webchat.austnet.org/, and if using an irc client, the server keeps on disconnecting, you can't reach #eevblog. You get this message soon after (successfully) connecting to some of irc.austnet.org irc servers (rough translation):[17:16]  Connection to server irc.austnet.org (porta 6667) lost: the host has closed the connection

author: Halcyon
author_rank: Unknown
timestamp: December 02, 2019, 07:19:33 pm
content: Quote from: orzel on December 02, 2019, 04:17:46 pmEverything seems to be OK. We have 32 users online now from all over the world. I also tested both the Austnet webchat and the embedded client on the EEVBlog website, both are also OK.Sounds like a local issue. Are you accessing IRC behind a firewall (e.g.: at work)? Sounds like the common ports for IRC are being blocked on your end.You may also have issues if you're attempting to connect via an anonymising VPN service.

author: orzel
author_rank: Regular Contributor
timestamp: December 12, 2019, 10:35:55 pm
content: Quote from: Halcyon on December 02, 2019, 07:19:33 pmOuch, really ?I'm often using IRC, and never had any problem to connect to any network. I dont use any VPN, my (home) server doesn't block any port. I tried again and it still doesn't work from here. Using the ausnet web page i got an empty chat room with red "Disconnected from the irc network" at top-left, "connecting to channel..." in normal/grey.Using an irc client, it manages to connect, give some information as is usual when connecting to an irc client, then disconnect ("The remote host closed the connection"), then connect again.. Meanwhile, I also receive private messages in loop saying only "TIME", from some servers *.au.austnet.org (onacloud, vegas, incognito, lego, ..)Testing fromhttps://www.eevblog.com/chat/gives the same result as from the ausnet web page. It uses the same widget/iframe or whatever.My conclusion is that it's not a network/firewall problem, but the irc server kicking me, but I dont understand why. Those "TIME" messages seem bogus, as well.. ;-(

author: Halcyon
author_rank: Unknown
timestamp: December 12, 2019, 11:10:23 pm
content: Yeh very strange. Could you perhaps PM me a log of the connection attempt so I can look into it further.
Where to buy iron tips for Aoyeu 2703A+ ? - Page 1
Forum section: electronics / general

author: u666sa
author_rank: Frequent Contributor
timestamp: December 11, 2019, 08:05:00 am
content: RUSSIAAbout two or three years ago I ordered two tips fromSRA-Soldering dot comand both tipsarrived not working(resistance between contacts measured open), they wouldn't take them back or refund money, croocks.Where to buy tips for my soldering iron?I asked same question on vlab su forums, and I was suggested to use Hakko T12 tips, even got a link to an article in which apperantlyguy tries them out on his Aoyeu 2738.. The only problem is that in the pictures those tips and the tip on his statation have two contacts, while tips for my station have 3 contacts.These are pictures of tip from my station, resource = -50%and my station.https://ibb.co/ChzNsTbhttps://ibb.co/wB1JCLNHere is a pic from that article, hakko tip next to supposedly aoyue tip with two contacts, which I could not find anywhere on official sites.гиф картинкиI take it that Hakko T12 tips won't work on my station, right? Right?Where to buy tips for my station? I do not want SRA Soldering, they are crooks, and I woudln't recommend SRA soldering to any one of you.

author: u666sa
author_rank: Frequent Contributor
timestamp: December 11, 2019, 08:10:46 am
content: photo sharing

author: BillB
author_rank: Unknown
timestamp: December 11, 2019, 10:29:42 pm
content: I've purchased several Aoyue tips for my 2703 from SRA (through eBay) and never had any problems with them. In fact, I got the 2703 from them through eBay (it arrived damaged from bouncing around during transit and several internal plastic stand-offs sheered off) and since I had some spare parts to fix it myself they gave me a discount off the purchase for my trouble.

author: andy3055
author_rank: Super Contributor
timestamp: December 12, 2019, 02:18:36 am
content: https://www.ebay.com/p/1961791746?iid=111031347003&rt=nc

author: u666sa
author_rank: Frequent Contributor
timestamp: December 12, 2019, 03:27:49 pm
content: So um... 1200 rubles for a tip and then 3300 rubles for deliveryDollar is 64 rublesThat means a single tip will cost me 3300+1200==4500 rubleswhich is $71 US dollars...Would you pay $71 US bucks for a single soldering iron tip?

author: andy3055
author_rank: Super Contributor
timestamp: December 12, 2019, 06:40:36 pm
content: Quote from: u666sa on December 12, 2019, 03:27:49 pmThat is up to you. Don't ask me if I would buy it. You wanted a source and this is one. I saw free shipping but that might be only in the US. May be you have to look for a source in Russia or have someone mail it from a supplier in EU if available. Under $18.00 is not a bad price for the item alone.
10 year old ee engineer wanting to graduate end of year - Page 1
Forum section: electronics / general

author: MrMobodies
author_rank: Super Contributor
timestamp: December 10, 2019, 08:43:32 pm
content: I found this article and I don't know whether he is genuinely interested in the subject or whether the parents were pushing for it.https://www.dailymail.co.uk/news/article-7776441/Belgian-boy-wonder-drops-Dutch-university-age-9.htmlQuoteOn the Universities feedback there is some kind of reverse discrimination going on there with hiring staff see attached picture Google reviews but I don't it has anything to do with his tight exam deadline, 16 days more for exams doesn't seem a lot so why not continue in the next year instead of pulling out.What do you think?

author: Howardlong
author_rank: Super Contributor
timestamp: December 10, 2019, 08:51:04 pm
content: More here:https://www.bbc.co.uk/news/world-europe-50734000Sounds a bit like unnecessarily pushy parents?Edit: ...and now I’ve read more, they’ve created quite the spoilt brat it would seem: learning is at least as much about failure as it is success, the failure part of his education, in particular how to deal with it, appears to be missing.

author: ataradov
author_rank: Super Contributor
timestamp: December 10, 2019, 08:58:08 pm
content: There is already a thread for thishttps://www.eevblog.com/forum/chat/belgian-boy-laurent-simons-heads-off-to-university-aged-8/

author: MrMobodies
author_rank: Super Contributor
timestamp: December 10, 2019, 09:02:42 pm
content: Oops. I didn't notice or search which I should have done.Sorry about that maybe mods can close or merge it with the other thread.

author: coppercone2
author_rank: Super Contributor
timestamp: December 11, 2019, 02:08:16 am
content: how is this kid gonna handle the industry bullshit at this age, the venom of employee can kill a small child easily

author: SiliconWizard
author_rank: Super Contributor
timestamp: December 11, 2019, 02:42:52 am
content: Quote from: coppercone2 on December 11, 2019, 02:08:16 amAre kids allowed to work in Europe these days? I wasn't aware.

author: macboy
author_rank: Super Contributor
timestamp: December 11, 2019, 02:31:37 pm
content: Quote from: coppercone2 on December 11, 2019, 02:08:16 amWith a mind like his, why would he stop studying and enter the workforce with a BSc? That's absurd. He'll probably have completed his post-doc by the time he's old enough to "work".
Getting a router/modem for Comcast/Xfinity - Page 1
Forum section: electronics / general

author: engineheat
author_rank: Frequent Contributor
timestamp: December 09, 2019, 08:44:19 am
content: Hi,I don't want to pay the $10 rent for Comcast/Xfinity modem anymore and want to get my own. I need it to have router built in too. But I'm a bit confused as to what makes a model "compatible" with Xfinity? Will any cable modem work? What should I be looking for? 300Mbps is more than enough right?Thanks

author: rdl
author_rank: Super Contributor
timestamp: December 09, 2019, 12:11:35 pm
content: Anything DOCSIS 3.0 or better should work fine. You can probably just go buy something off the shelf at Walmart. That's where I've gotten my last two. Both are Motorola branded and the one I got most recently had the Xfinity logo and a list of other certifications printed on the box.I'm not big on combining the modem and router, so I use a separate router. Seems you get better hardware and support that way (software updates and such), though maybe a bit more complicated to set up. I use a Ubiquiti Edgerouter.

author: spudboy488
author_rank: Regular Contributor
timestamp: December 09, 2019, 12:28:17 pm
content: https://www.xfinity.com/support/articles/list-of-approved-cable-modems

author: MarkF
author_rank: Super Contributor
timestamp: December 10, 2019, 12:13:23 am
content: I have been using a separate modem and router on COMCAST with no issues.Modem:Motorola MB7420Router:Netgear WNR2000v3 — N300 Wireless Router

author: GreyWoolfe
author_rank: Unknown
timestamp: December 10, 2019, 12:55:37 am
content: We have Spectrum here. I use their modem as I don't pay a fee for it. The wireless part of the modem bites so it is in bridge mode so I can use my own router. I use an ASUS RTN-66U Dark Knight router along with a Netgear 16 port unmanaged Gigabit switch connected to it.

author: rrinker
author_rank: Super Contributor
timestamp: December 10, 2019, 05:29:43 pm
content: They just upgraded my area again (Comcast) so my Arris that I had for the past 5 years needed to be replaced with a DOCSIS 3.1 compatible one. I got another Arris, no wifi in it as I already have my own AP/router.I was initially getting far WORSE performance - but when I swapped it back for the old one, I was STILL getting horrible performance. Really poor S/N and signal levels. Per usual, the first level techs can;t tell you a darn thing, other than "it looks green, must be you" but they are always willing to send someone out. Turns out the darn tree rats (squirrels) chewed my downlead from the pole.If you log in to your Comcast account, somewhere under the Internet services there is a list of compatible devices for your level of service. Just get one of those. The Arris equipment is on there.
Old Boot-Sector 512byte Games!! - Page 1
Forum section: electronics / general

author: GlennSprigg
author_rank: Super Contributor
timestamp: December 05, 2019, 12:12:27 pm
content: Interesting talk/demo regarding the512-byteBoot-Sector on Floppies!Most of us know what it is for, but years ago, people tried to find the most that theycould do with it, just for fun, especially in creating a usable 'Game'....Check out this Youtube video.Start viewing at 1:40 where he starts talking about 'DOS', orStart viewing at 4:00 where he gets into the 'Game' aspect.It's interesting what can be done with very limited space, unlike today's behemoths!P.S.The blinking colored dots/blocks in the bottom left corner, of the 'Pacman' gamelater, were evidently memory locations to store Variables, according to one of the Comments.

author: GlennSprigg
author_rank: Super Contributor
timestamp: December 10, 2019, 01:34:36 pm
content: That interested me, because years ago I would regularly insert 20-30 Bytes of Machine-Code into very limited spaces! Unlike today's more luxury systems.
Seal - Page 1
Forum section: electronics / general

author: Alfons
author_rank: Regular Contributor
timestamp: December 03, 2019, 06:14:24 pm
content: I would like to seal a device, which I want to give 4 weeks return possibility on Ebay. Prerequisite: the seal is still OK. How do I seal the device?

author: ataradov
author_rank: Super Contributor
timestamp: December 03, 2019, 06:41:43 pm
content: Amazon sells a lot of various tamper evident seals. Realistically it is your best bet. If someone is really determined to open the device, they will find a way no matter what.

author: Bud
author_rank: Super Contributor
timestamp: December 03, 2019, 07:27:05 pm
content: Why do you think eBay will side with you if the seal was broken. There is no eBay rule stipulating that.

author: German_EE
author_rank: Super Contributor
timestamp: December 06, 2019, 11:09:01 am
content: On your EBay posting write that the article is sealed to prevent tampering and warranty returns will require that the seal is unbroken. This means that if you ship the item to a 230V country you should alter the device before shipping.This prevents board swapping.

author: jogri
author_rank: Frequent Contributor
timestamp: December 07, 2019, 02:21:18 pm
content: Does it have a metal case? If so, use a blob of solder to seal it, maybe even scratch something into the solder. Take a picture of the solder blob and if you get it back with a different blob it has been tampered with.

author: TerraHertz
author_rank: Super Contributor
timestamp: December 08, 2019, 10:17:47 am
content: You didn't give any information on parameters. Does the seal have to be flat, what kind of surface you want the seal stuck to, whether there's any bending or abrasion, etc.Anyway, have you considered a very old technology? Hot wax sealing, with an embossed seal, like traditionally used for letters?

author: Alfons
author_rank: Regular Contributor
timestamp: December 08, 2019, 04:13:53 pm
content: Thanks for the answers. I do not want anyone screwing around the device and then sending it back to me. It's about devices that are all in a metal case. Let's see how I solve that.

author: coppercone2
author_rank: Super Contributor
timestamp: December 08, 2019, 07:26:16 pm
content: i hate when people do this shit. probobly a rotten capacitor in theretempted to just mess with the seller when this happens because I need to use goo gone, razors, brillo, etc.
Now on eBay, a Million Watt Laser.... - Page 1
Forum section: electronics / general

author: Deodand2014
author_rank: Regular Contributor
timestamp: December 14, 2019, 10:47:54 am
content: An interesting teardown and demonstration of the kinds of things you can get on eBay, I'm pretty certain there is a law against selling lasers this powerful...

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: December 14, 2019, 10:57:19 am
content: I don't think my cat would be too happy about it.

author: Gyro
author_rank: Super Contributor
timestamp: December 14, 2019, 12:30:05 pm
content: Be the envy of other major governments!

author: MadTux
author_rank: Frequent Contributor
timestamp: December 14, 2019, 12:41:41 pm
content: 0.000001% duty cycle. Ruins everything
How a cake company pioneered the first office computer - Page 1
Forum section: electronics / general

author: nali
author_rank: Frequent Contributor
timestamp: December 07, 2019, 05:43:38 pm
content: I'm not sure if this is view-able outside the UKhttps://www.bbc.co.uk/news/av/stories-50559357/how-a-cake-company-pioneered-the-first-office-computeror here's a similar YT vidhttps://youtu.be/X0yYDxjBnTMQuote

author: chris_leyson
author_rank: Super Contributor
timestamp: December 07, 2019, 06:07:13 pm
content: My mum worked for Joe Lyons for a while in the 50's as a punch card operator. When she told me I didn't think much about it at the time, in hindsight I wish I had asked her more about LEO. The only thing that I remember was that she said the machine would sometimes stop working and an engineer in a lab coat would come and check the blinky lights.
The guys who invented the Video Tape Recorder - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: December 03, 2019, 08:21:39 pm
content: Interview with Ampex engineer Jim Wheeler om the development of the video tape recorder.

author: SL4P
author_rank: Super Contributor
timestamp: December 03, 2019, 10:15:50 pm
content: Whomever typed the captions on that video should have learned to spell before they took the job !

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: December 04, 2019, 05:54:21 am
content: Quote from: SL4P on December 03, 2019, 10:15:50 pmAuto generated. Doesn't help that a lot of the people being interviewed like to mumble.

author: Homer J Simpson
author_rank: Super Contributor
timestamp: December 07, 2019, 12:35:25 am
content: More Ampex history and interviews.

author: tooki
author_rank: Super Contributor
timestamp: December 07, 2019, 09:37:58 pm
content: Quote from: SL4P on December 03, 2019, 10:15:50 pmAre you seriously only just now discovering that YouTube has auto-generated captions?!?

author: Rerouter
author_rank: Super Contributor
timestamp: December 07, 2019, 09:42:17 pm
content: At the very least, they have not locked out public caption submissions, so it would not be too involved to correct the errors,
Disney video game Tron: Evolution unplayable 8 years after launch due to DRM - Page 1
Forum section: electronics / general

author: I wanted a rude username
author_rank: Frequent Contributor
timestamp: December 05, 2019, 04:08:38 am
content: "On the other hand, it looks like the protection was cracked a long time ago. Stinks that legit owners would have to go track that down just to play their game now."https://www.gamerevolution.com/news/621017-drm-securom-tron-evolution-unplayable-activation

author: maginnovision
author_rank: Super Contributor
timestamp: December 05, 2019, 07:23:44 am
content: I'm surprised anyone would try.

author: magic
author_rank: Super Contributor
timestamp: December 05, 2019, 09:00:51 am
content: Buying anything from Big Name Entertainment Inc and getting screwed, sounds like justiceBypassing DRM is of course a violation of the DMCA in America and there are no exceptions for legal owners

author: Halcyon
author_rank: Unknown
timestamp: December 05, 2019, 09:12:52 am
content: Quote from: magic on December 05, 2019, 09:00:51 amWhat about for those of us without draconian Copyright laws? ;-)

author: madires
author_rank: Super Contributor
timestamp: December 05, 2019, 10:30:24 am
content: The curse of DRM. Same story over and over again.

author: magic
author_rank: Super Contributor
timestamp: December 05, 2019, 11:14:13 am
content: Quote from: Halcyon on December 05, 2019, 09:12:52 amNothing simpler, just send more of your money to Hollywood and wait

author: Halcyon
author_rank: Unknown
timestamp: December 05, 2019, 12:02:08 pm
content: Quote from: magic on December 05, 2019, 11:14:13 amIn these parts we simply download (without uploading) and there are no legal ramifications.

author: edy
author_rank: Super Contributor
timestamp: December 05, 2019, 07:10:36 pm
content: Subscription model... flat rate per month to play. No more owning games. Seems to be the direction many other industries are going (for music, movies, books). If the title gets messed up or pulled from the store, you simply cancel or don't pay your monthly subscription, or move on to other games.
Is eevblog Wiki Spamed? - Page 1
Forum section: electronics / general

author: RoadRunner
author_rank: Frequent Contributor
timestamp: December 05, 2019, 12:05:40 pm
content: I think EEVBLOG wiki page is spamed, some guy has posted his link . Though its just the matter of undo to get rid of his changes.https://www.eevblog.com/wiki/index.php?title=Main_Page

author: VK3DRB
author_rank: Super Contributor
timestamp: December 05, 2019, 12:20:08 pm
content: The link seems legitimate. If someone named "smith" posted it as an advertisement, he has never heard of punctuation and could not spell to save himself.... a millennial perhaps, or the Nigerian Assistant Deputy Minister of Finance who has $1,295,000 (one million, two hundred and ninety-five thousand dollars) he needs you to launder for a small fee.

author: PA0PBZ
author_rank: Super Contributor
timestamp: December 05, 2019, 12:43:11 pm
content: Quote from: VK3DRB on December 05, 2019, 12:20:08 pmWhich one, the one with or without the trailing 's'?

author: Yansi
author_rank: Super Contributor
timestamp: December 05, 2019, 12:50:14 pm
content: There seems also to be a EEVblog Electronics Resource Wiki:Copyrights page missing
Wanted: Silicon Chip Feb 2012 Article on Converting The F&P SmartDrive  - Page 1
Forum section: electronics / general

author: mrpackethead
author_rank: Super Contributor
timestamp: November 27, 2019, 04:20:58 am
content: Does anyone have a copy of this mag, and could consider scanning it to me. after this article. I can't see to buy it..http://archive.siliconchip.com.au/cms/A_112762/article.htmlEDIT: just after i posted this.. I found the link! Sorry.

author: wasyoungonce
author_rank: Frequent Contributor
timestamp: November 27, 2019, 05:44:56 am
content: I remember the article but it’ll be in a pile of mags in my home ....somewhere!That’s the hard part. My guess is most direct drive motors could be re-worked

author: mrpackethead
author_rank: Super Contributor
timestamp: November 27, 2019, 09:23:24 am
content: I want to put one on a honey extractor. it will be perfect match for it.

author: austfox
author_rank: Regular Contributor
timestamp: December 04, 2019, 09:15:56 am
content: Just out of curiosity, how do Silicon Chip supply their back issue articles?I’m pretty sure they don’t do PDF, so is it black & white or colour photocopying?

author: wilfred
author_rank: Super Contributor
timestamp: December 04, 2019, 11:05:33 am
content: Don't be so sure it isn't a PDF download.
Lower gain feedback transistor outputs more power on HV trans secondary, why? - Page 1
Forum section: electronics / general

author: gkmaia
author_rank: Frequent Contributor
timestamp: December 03, 2019, 09:44:33 pm
content: I got a few Lecroy(siglent) WaveAce.In one of them, the LCD backlight was a bit dim and I suspected the inverter was not supplying enough power to the backlight.So I replaced Q3 and Q2 for new ones and backlight now is much brighter.When I replaced them I tested both the old and the new one on my BK curve tracer. These are the results:- OLD D1802 / Beta: 350 / Display brightness LOW- NEW D1802 / Beta: 150 / Display brightness HIGHAs Q2/3 drive the oscillation on the primary I am curious to understand why a lower gain transistor on primary/feedback outputs more power on the secondary

author: Zero999
author_rank: Super Contributor
timestamp: December 03, 2019, 10:03:30 pm
content: My guess would be that having a lower beta, it's not driven so far into saturation, therefore will turn off faster, resulting in lower switching losses and higher efficiency, so a brighter light.
Digikey PCB ruler - Looking for one - Page 1
Forum section: electronics / general

author: Yaroooo
author_rank: Regular Contributor
timestamp: December 03, 2019, 05:28:15 pm
content: I'm looking for one Digikey PCB ruler, I've seen it several times and it's very cool. I've checked Digikey website and seems that they doesn't produce them anymore.Someone have unused one or a spare one to send over post? I know they give it as gadget sometimes. I'll pay post price.

author: andy3055
author_rank: Super Contributor
timestamp: December 03, 2019, 06:21:36 pm
content: Try this from Amazon:https://www.amazon.com/s?k=pcb+ruler&gclid=EAIaIQobChMIg_zizYua5gIVgcBkCh2uhggHEAMYAiAAEgK-nfD_BwE&hvadid=174278152797&hvdev=c&hvlocphy=9061200&hvnetw=g&hvpos=1o2&hvqmt=b&hvrand=2633930735624460178&hvtargid=aud-837858999240%3Akwd-66576231984&hydadcr=8779_9622294&tag=googhydr-20&ref=pd_sl_9psv4k11nl_b

author: Gixy
author_rank: Regular Contributor
timestamp: December 03, 2019, 09:09:20 pm
content: or this one from welectron:https://www.welectron.com/eeRuler-PCB-Ruler-30-cm

author: bombledmonk
author_rank: Regular Contributor
timestamp: December 03, 2019, 09:13:27 pm
content: We do still make them, they are just out of stock at the moment. PM me you're address, I'll see what I can do.
74 logic chip with 2 type of DIP packaging - Page 1
Forum section: electronics / general

author: romhunter
author_rank: Regular Contributor
timestamp: December 07, 2019, 11:22:03 am
content: I'm just looking for the 74 chip that exist in both wide DIP version and narrow DIP version. Anyone got some idea about the name of it? I've been looking for it, because I've seen one back then.Maybe it's the SN74LS154N, but I can't find any narrow DIP one on fleabay...

author: duak
author_rank: Super Contributor
timestamp: December 07, 2019, 10:07:50 pm
content: The 74F181 ALU is or was available in both wide and narrow DIPs:https://media.digikey.com/pdf/Data%20Sheets/Fairchild%20PDFs/74F181.pdfI expect that TI and other vendors also made various width parts available.
Sydney Australia AusRail Event - Railways Power and Signalling Event  - Page 1
Forum section: electronics / general

author: AllTheGearNoIdea
author_rank: Unknown
timestamp: December 01, 2019, 07:46:40 pm
content: Given that a lot of engineers are interested in trains and railway, Just thought I would mention for those lucky enough to be in the Sydney Australia this week it’s the AusRail event held every few years. It’s a great opportunity to geek out on trains heavy power and railway signalling and all types of heavy engineering.I am over from the old dart with some signalling gear on stand 82. So please say hi as I will be desperate to talk Vintage electronic with people etc. It’s free to get into the exhibition provided that you pre register first . I will provide a link to the registration website later today.https://www.ausrail.com/Also looking for anything vintage electronics related to see while I am in Sydney so any recommendations would be great.Best Regards Chris AKA Allthegearnoidea.https://www.youtube.com/channel/UCvBpiuUUnErJlNBm6DWb3Ww

author: Whales
author_rank: Super Contributor
timestamp: December 03, 2019, 03:39:43 am
content: QuoteI can't find any information anywhere about costs for non-industry. It reads like they might not be allowed.

author: AllTheGearNoIdea
author_rank: Unknown
timestamp: December 03, 2019, 05:24:08 pm
content: It’s free provided that you register as a visitor and enter after 10Am It’s only the delegates that have to pay.
SAM simulator - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: December 01, 2019, 06:23:56 am
content: https://sites.google.com/site/samsimulator1972/homeToo lazy to play, but the youtube videos look interesting. It's on eevblog because its a virtual radar set (not a real video game)(the error is actually what happens when a modern radar system gets hacked because it has a ethernet port on it and its being used to run pornography). Which begs the question, do you think radar processing systems are good crypto coin crunchers? perhaps the russian military knows?? not much different then doing someones taxes at work I figure.. (read about ukranian nuclear plants doing bitcoin math lol)

author: German_EE
author_rank: Super Contributor
timestamp: December 01, 2019, 11:14:09 am
content: I'm disappointed, I thought you meant this Sam:https://s-media-cache-ak0.pinimg.com/564x/cf/fa/f7/cffaf71176a7a98fbc2f22b86fc3f745.jpgI prefer my version.

author: coppercone2
author_rank: Super Contributor
timestamp: December 01, 2019, 12:14:23 pm
content: there is a stargate command simulator which is hilarious if you play it at 15x speed, its similarly designed where you are in the control room, don't remember if there was animations etcsomething along the lines of goauld invasions per minute (GPM) and nuclear bomb malfunctions etc
Octagonal funky chemical element badges as avatars - Page 1
Forum section: electronics / general

author: Deboscope
author_rank: Contributor
timestamp: December 01, 2019, 07:25:40 am
content: Hi guys, where do you get yours from?

author: tautech
author_rank: Super Contributor
timestamp: December 01, 2019, 07:39:03 am
content: Profile>Modify Profile>Forum Profile, Personalized Picture, select Choose avatar from gallery, select Periodic Table

author: coppercone2
author_rank: Super Contributor
timestamp: December 01, 2019, 07:45:52 am
content: negative dielectric constant?

author: Deboscope
author_rank: Contributor
timestamp: December 01, 2019, 07:49:18 am
content: Got it thanks
230V AC to 12v AC - Page 1
Forum section: electronics / general

author: Lee Newsum
author_rank: Newbie
timestamp: November 30, 2019, 02:03:39 am
content: this is going in the bin at work so i had a look.2 transformers ? y need 2 of them?

author: jmelson
author_rank: Super Contributor
timestamp: November 30, 2019, 02:58:37 am
content: Quote from: Lee Newsum on November 30, 2019, 02:03:39 amThis is a lighting power supply, NOT a simple 230 to 12 V AC transformer. It converts input AC to intermittant DC, then uses switching components toconvert to a high frequency (probably square wave) AC output. I've worked with another version of the same thing that produces a 70 KHz output forhalogen lights.Jon

author: Zero999
author_rank: Super Contributor
timestamp: November 30, 2019, 08:44:41 am
content: Yes, it's a high frequency electronic transformer which produces a 50kHz to 100kHz, modulated with the mains frequency.The small transformer is to drive the switching transistors and the larger one handle the power. ST have made an application node detailing how to make one. They all use a similar schematic.https://www.st.com/content/ccc/resource/technical/document/application_note/e5/88/46/11/35/8c/4a/bf/CD00003902.pdf/files/CD00003902.pdf/jcr:content/translations/en.CD00003902.pdfThey're not easy to use for powering electronic circuits. A high speed bridge rectifier will be required with an inductive, as well as capacitor filter, as they don't like current spikes. Attention also needs to be paid to high frequency interference.

author: tooki
author_rank: Super Contributor
timestamp: November 30, 2019, 01:59:37 pm
content: Out of curiosity, what’s the advantage of such “electronic transformers” over an actual transformer, assuming it’s just for halogen lamps anyway?

author: Zero999
author_rank: Super Contributor
timestamp: November 30, 2019, 02:17:51 pm
content: Quote from: tooki on November 30, 2019, 01:59:37 pmElectronic transformers are higher efficiency, smaller, lighter and cheaper, than traditional iron transformers. They work better with dimmers and can easily protected against short circuit, without a circuit breaker, bimetallic strip or PTC resistor.

author: tooki
author_rank: Super Contributor
timestamp: November 30, 2019, 07:24:08 pm
content: OK, thank you! That's kinda what I figured, but wanted to be sure!