hybridfree/eevblog-posts huggingface dataset:
forum modification - Page 1
Forum section: electronics / general

author: strawberry
author_rank: Super Contributor
timestamp: May 10, 2022, 03:39:29 pm
content: when uploaded 8/6/4K trivial images like(resistor color code, ... some informative image) that sometimes take up multiple posts, inconvenient to open them due to size and speedhigh res. images good for teardowns, large/medium schematics, some complicated issuemost display can display 2K anywayI use MS Paint to downsize photos, (original monochrome schematic JPG 9x6K 2.8MB) reduces size down to some 200KB and image size/resolution is still within 2K and readable

author: rsjsouza
author_rank: Super Contributor
timestamp: May 10, 2022, 03:43:01 pm
content: Is this a question, a proposition, a statement, a tutorial on how to resize pages?Your post is quite disconnected.Are you proposing a modification to the forum so it resizes images automatically? If so, IIRC this was evaluated by the sysops and there were either pitfalls to it or were considered too obtrusive.

author: MarkF
author_rank: Super Contributor
timestamp: May 10, 2022, 04:59:06 pm
content: My daily driver is a Laptop with a 1080p display.When uploading images, I Photoshop the images chopping to the area of interest and limiting the file size to less than 500KB.I always save the images as PNG files because PNG compression is lossless, thus avoiding the artifacts of a JPG.Also, my 'forum dark style' forces the image size to be reduced to fit on my display.F.Y.I. - Images with a file size over 1MB, I refuse to look at.
Purchase of electronic components in Farnell EU area eternal delivery problems - Page 1
Forum section: electronics / general

author: max-bit
author_rank: Frequent Contributor
timestamp: May 10, 2022, 06:53:05 am
content: Company:FarnellSubject:delivery time (or rather a terrible delivery time).Until about 2020, purchases at farnell were OK, goods ordered up to 5 p.m were delivered on the next day (within the EU).Unfortunately, from 2020 there was a terrible problem with the timeliness of deliveries.The ordered goods are delivered after 4-5 days, sometimes one week after placing the order.Of course, the company explains the problem with the UK leaving the European Union.Except that this is a nonsense, I would understand one day longer (max) but not 3-7 days (3 days is rather not real).If I order from digikey (USA) and such a shipment can reach me (EU) within 3-4 days max with external customs service?What is this done by farnell, whose documents should go "from the automatic" through the customs clearance?Therefore, I currently do not recommend using this company. There must be some punishment for a mess!It was better is much worse!As far as I know, the parcels are repackaged twice, first sent to the EU in bulk and then repacked in the EU to the recipient !!! Nonsense and absurdity that brings nothing but prolongs the process.
Dumpster... - Page 1
Forum section: electronics / general

author: Herr R aus B
author_rank: Regular Contributor
timestamp: April 09, 2022, 12:26:13 pm
content: Unfortunately there is no general talk or off topic section where this here might fit, but I think it might be worth posting it - Dave obviously is not alone ;-)https://dumpster-dave-llc.business.site/
Design subboard? - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: March 30, 2022, 12:23:35 pm
content: I was wondering if a subboard for discussion about design might be useful?Its hard to define in a rigid fashion but we know it when we see it. And when its there and changes the world we live in, its great.It adds value.. It makes using a product fun, or even life changing. Once in a very great while it changes all of society..(Like the Macintosh did, for example, stuff like that.)
"Unwatch" a thread? - Page 1
Forum section: electronics / general

author: MuseChaser
author_rank: Contributor
timestamp: March 12, 2022, 04:08:57 pm
content: Is there a way to "unwatch" a thread? Once you post in a thread, you continually get that thread in the "Show new replies to your posts" page. Sometimes, threads continue on, or become less interesting/informative/productive, and it'd be nice to be able to somehow indicate that further notifications are not necessary. I use that function on a few other forums, but can't find a way to do it here. Thanks!

author: Ian.M
author_rank: Super Contributor
timestamp: March 12, 2022, 04:14:40 pm
content: Unfortunately not. However there is a workaround using 'Ignore Topic'. See my reply#5 here:https://www.eevblog.com/forum/blog/how-to-'unsubscribe'-from-forum-threads/

author: voltsandjolts
author_rank: Unknown
timestamp: March 13, 2022, 07:00:34 pm
content: Profile > Modify Profile > Notifications > [select thread] UNNOTIFY

author: Ian.M
author_rank: Super Contributor
timestamp: March 13, 2022, 07:15:27 pm
content: No, that turns off *email* notification, which has nothing to do with your updated topics page.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: March 13, 2022, 09:07:45 pm
content: Quote from: voltsandjolts on March 13, 2022, 07:00:34 pmProfile > Modify Profile > Ignore topics.

author: mc172
author_rank: Frequent Contributor
timestamp: March 14, 2022, 03:13:01 pm
content: Any idea how I add a topic to the ignore list? All I seem to be able to do is un-ignore everything in the list which is empty.

author: Ian.M
author_rank: Super Contributor
timestamp: March 14, 2022, 03:41:25 pm
content: Didn't you follow my links back to the topic where Dave introduced it?https://www.eevblog.com/forum/chat/forum-update-new-ignore-topics-feature/Do as instructed there and on your unread and new (unread) replies pages you get an [IGNORE TOPICS] button far right, just above the topic list, and each topic has a checkbox far right to select which to ignore when you click the button. You cannot ignore topics from within them, or from individual forum's index pages.

author: mc172
author_rank: Frequent Contributor
timestamp: March 15, 2022, 02:43:52 pm
content: To be honest, no. By the time I got here to read this thread, there were posts containing the word "ignore" which seemed to be the more correct term for what I was looking to do, so I just blindly wend down that path. The "unsubscribe" bit in your first link subconsciously disinterested me because I've tried doing things like that in the past with no success, although on reflection it was unnotify.I saw this:Quote from: Ed.Kloonk on March 13, 2022, 09:07:45 pmI saw that it had been thanked so went there and couldn't figure it out, so asked.Anyway, it worked. Thanks for your help Ian.
Thanks to posts ratio - Page 1
Forum section: electronics / general

author: Circlotron
author_rank: Super Contributor
timestamp: February 19, 2022, 10:27:45 am
content: I see that everyone now has the amount of thanks they have received under their name and post count. Would it perhaps be more useful to have a thanks per post count? That would normalise the figure regardless of the actual posts count. Mine for example would show as 0.181

author: ataradov
author_rank: Super Contributor
timestamp: February 19, 2022, 10:39:32 am
content: It would be nice to have an option to disable that stuff too the same way it is possible to disable user signatures. But it looks like all those extensions don't integrate well with the forum profile.Actually, it does not matter. It has unique class name, so a simple Stylus rule removes it:Code:li.thankscount{display: none;}Back to regularly scheduled programming.

author: jpanhalt
author_rank: Super Contributor
timestamp: February 19, 2022, 10:45:29 am
content: Quote from: Circlotron on February 19, 2022, 10:27:45 amAll depends on what you mean by "useful." Please explain.

author: Circlotron
author_rank: Super Contributor
timestamp: February 19, 2022, 11:13:19 am
content: Quote from: jpanhalt on February 19, 2022, 10:45:29 amPerson 1 has 100 posts and 70 thanks.Person 2 has 1000 posts and 200 thanks.At first glance it seems that person 2 likely posts higher quality posts because of the greater thanks count. But it took them a whole lot more postings to achieve that count that person 2.Useful because you can see at a glance some sort of figure of merit without having to do any mental arithmetic.

author: voltsandjolts
author_rank: Unknown
timestamp: February 19, 2022, 11:21:09 am
content: I think you are suggesting it's like a signal to noise ratio.For this forum maybe it's appropriate to display it in dB

author: T3sl4co1l
author_rank: Super Contributor
timestamp: February 19, 2022, 11:21:42 am
content: Even more relevant, I suppose, would be thanks per view. Presumably, thankers make up some ~constant fraction of the viewers of a given post/thread, no?Tim

author: jpanhalt
author_rank: Super Contributor
timestamp: February 19, 2022, 11:37:58 am
content: Quote from: Circlotron on February 19, 2022, 11:13:19 amYour assertion is purely hypothetical and without any data to support it.From what I have seen here and elsewhere, the posts with the most thanks are either funny, YouTube or other archival materials, or one side of a controversy (i.e., a mob mentality). There is no apparent relationship to technical or documentation quality. Calling it a figure of merit is perhaps accurate in an oxymoronic sense. The "merit" is unrelated to the principle purpose of this forum.Why start a new thread about "thanks" when there is already one started by EEVBlog?

author: wraper
author_rank: Unknown
timestamp: February 19, 2022, 11:45:58 am
content: Also users who registered quite a while ago will have lower ratio since "Say Thanks" was introduced down the route. IIRC I already had something like 8-10k posts when it was introduced.
How do I get unbanned? - Page 1
Forum section: electronics / general

author: Connecteur
author_rank: Frequent Contributor
timestamp: February 01, 2022, 02:42:00 am
content: I was banned for life from logging in with my other computer. I've tried emailing, but no response.What other recourse do I have?

author: totalnoob
author_rank: Regular Contributor
timestamp: February 01, 2022, 05:21:10 pm
content: I had that happen to me, too. I thought it was because I had my VPN running. Now that I am in on my laptop (I need to check the desktop again, should be the same IP since I turned the VPN off), I'm thinking there was a bug this morning.I ran into this on another forum that I believe either uses the same software or server company (Woodnet.com) but was able to get back into there within a few minutes of turning off my VPN (which is why I thought it was originally a VPN issue, but this forum still banned me even a couple hours after turning off the VPN).

author: jpanhalt
author_rank: Super Contributor
timestamp: February 01, 2022, 07:41:37 pm
content: It appears to be fixed.

author: totalnoob
author_rank: Regular Contributor
timestamp: February 02, 2022, 12:57:23 am
content: I tried a few hours ago, after posting the above, and my desktop was still banned. Not sure why my laptop can get through. I might need to clear out the browswer cache.

author: richnormand
author_rank: Unknown
timestamp: February 02, 2022, 03:57:15 am
content: Got the same message yesterday when I left the VPN running and logged in.Cleared the cookies cache on the browser and turned VPN off and all was OK.Looks like a server along the way sends a banned message based on apparent IP or a software bug at the forum's end.The message is prettytoo....

author: totalnoob
author_rank: Regular Contributor
timestamp: February 02, 2022, 05:20:59 pm
content: Yep, clearing the cache and cookies out now allow me to access on my desktop. I agree that this stinks that you can't have a vpn on and access the site. There ARE legitimate reasons for using a vpn besides spamming.

author: Connecteur
author_rank: Frequent Contributor
timestamp: February 17, 2022, 06:32:47 am
content: Quote from: Connecteur on February 01, 2022, 02:42:00 amI'm back. The problem appears to be resolved.
Purging inactive users? - Page 1
Forum section: electronics / general

author: JamesH
author_rank: Newbie
timestamp: February 10, 2022, 03:56:14 am
content: Sorry this is my first post - I've been a long time lurker (and would sometimes forget to login) and love the forum + EEVblog. I tried accessing my account that I registered in 2017, username JamesH,SMFsaid the account doesn't exist. Odd, so I registered again to reclaim my username. In my email I found the original Welcome to EEVblog Electronics Community Forum from 2017.Just curious if there was a purge of inactive users?

author: ledtester
author_rank: Super Contributor
timestamp: February 10, 2022, 04:03:45 am
content: There is a semi-regular purge of inactive users:https://www.eevblog.com/forum/news/zero-posters-purged/The most recent one occurred in November:https://www.eevblog.com/forum/news/zero-posters-purged/msg3817544/#msg3817544

author: MJD
author_rank: Newbie
timestamp: February 10, 2022, 04:19:28 am
content: Same thing happened to me, but is my fault as I was a long term lurker as well. Best I change that and contribute when I can.Cheers,Mike

author: ledtester
author_rank: Super Contributor
timestamp: February 10, 2022, 04:26:56 am
content: Quote from: MJD on February 10, 2022, 04:19:28 amAnd what a great first contribution!Just kidding -- welcome to the forum!Reminds me of when I had to write X pages a day in my high-school journal and inevitably I would start out with "Well, I've got X pages to write today, I wonder what I should write about. ..."

author: RoGeorge
author_rank: Super Contributor
timestamp: February 10, 2022, 09:22:06 am
content: The reason:The Purge Planet - Rick and morty

author: JamesH
author_rank: Newbie
timestamp: February 10, 2022, 04:39:28 pm
content: Thanks everyone, I'm just a hobbyist but will try and contribute where I can. Wish I could still have my account saying I reg'd in 2017 (for vanity reasons - ha).

author: michaelgeorge001
author_rank: Newbie
timestamp: February 10, 2022, 05:01:34 pm
content: That explains why I couldn't log in. I've been a long-time lurker as well. I've never had the opportunity to say something useful.- Mike -
Encoding issue for "Test Gear: What cool test gear do you own?" - Page 1
Forum section: electronics / general

author: Scyth3934
author_rank: Newbie
timestamp: February 03, 2022, 08:52:12 pm
content: When I put apostrophes into the field for "Test Gear: What cool test gear do you own?", it appears on my public profile as follows: '#039I'd assume this is some sort of encoding issue. I've entered "test: don't" into the field, and if you go to my profile you should see it appear as "test: don'#039t"
EEVblog black hole? - Page 1
Forum section: electronics / general

author: Xenon
author_rank: Contributor
timestamp: January 21, 2022, 01:16:30 pm
content: Hello all, question for the mods:I am trying to post my project in the "project, designs,....." folder.When pressing the "post" button it is processing for a few seconds and then drops me back to an empty "new topic" screen.But....the new post is nowhere to be found. Tried a second time, same result.Looking in my profile under "my posts" it is also not showing there.The post contains inline photo's and a link. Can any of this cause this behaviour?

author: xrunner
author_rank: Super Contributor
timestamp: January 21, 2022, 01:44:55 pm
content: I know if the pic attachment is too large it doesn't seem to want to proceed with editing as it should after it warns you. I usually have to start over as if I never started the post.

author: electr_peter
author_rank: Unknown
timestamp: January 21, 2022, 03:53:12 pm
content: Suggestion - prepare text in your favorite text editor in advance; post topic and then add pictures afterwards to the same post.

author: Xenon
author_rank: Contributor
timestamp: January 21, 2022, 04:17:34 pm
content: Pics in this size have been posted by me before, but I'll try again with smaller size, thanks for the tip.And on forums I allways press CTRL-C before pressing the "post" (or nuke) button
Why did I get a banned for spam message? - Page 1
Forum section: electronics / general

author: Qmavam
author_rank: Regular Contributor
timestamp: December 31, 2021, 03:31:58 pm
content: I haven't been here since Oct, 15, 21. I ask a question got two responses and all is good, No spam involved.Today I try to log in and I get this:"Sorry Guest, you are banned from using this forum!Your spam is not wanted hereThis ban is not set to expire."Can an administrator look into this and fix it?I did get in with my Email and password, but only because I went incognito, behind a VPN.I'm sure I posted nothing that could be called spam. I think a software glitch, somewhere.

author: Nusa
author_rank: Super Contributor
timestamp: December 31, 2021, 04:54:03 pm
content: The fact you got in via an alternate route suggests it was an IP ban, not one directed at you personally. You just have the bad luck to be assigned that IP now.

author: CookieMonster
author_rank: Contributor
timestamp: January 01, 2022, 12:55:03 pm
content: Hi!I've got the exact same problem !I first got this message while logged in after refreshing the page.It seemed strange because i never broke any forum rule.After visiting the forum from a new private tab, the same message appeared but with "sorry Guest" instead of "sorry Username".Like the OP, i am also using a VPN, but this has no effect on the message. It will appear no matter if the VPN is used.However, it does not appear when a different browser is used.I first got blocked on my computer using Safari.Now i am also blocked on my iPad using Safari.I am writing this post on Firefox (on the same computer that was blocked using Safari).This would suggest that it is not an IP ban.Maybe Safari related ?@Qmavam: which browser are you using ?

author: thm_w
author_rank: Super Contributor
timestamp: January 04, 2022, 09:13:05 pm
content: If it depends on browser then its going to be cookie based right. Did you clear all cookies for eevblog.com?

author: elschopi
author_rank: Newbie
timestamp: January 13, 2022, 07:41:53 am
content: Hi,I've had the same problem. Wasn't logged in quite a while, use VPN. Got the ban notice when trying to follow a link from Youtube. I'm using Chrome. What solved it for me was clearing all cookies on the login page that had the ban notice showing. Refreshed page, could log in.best regardsChris

author: JustSquareEnough
author_rank: Unknown
timestamp: January 21, 2022, 04:52:00 am
content: Same thing started happening to me today as well. does seem to be IP, VPN related. I use protonvpn. disappointing if we cant use the forum just because we are using a vpn...
"New replies to your posts" missing? - Page 1
Forum section: electronics / general

author: 1audio
author_rank: Frequent Contributor
timestamp: January 17, 2022, 02:34:40 am
content: For some reason the "new replies to your posts" link is missing. Is it user configurable? What could have moved/removed it? Is it a forum thing that changed? Or operator error and I'm not doing something correctly?

author: oPossum
author_rank: Super Contributor
timestamp: January 17, 2022, 02:53:28 am
content: Click the down arrow at the upper right. Link for new replies will be on the left.

author: 1audio
author_rank: Frequent Contributor
timestamp: January 17, 2022, 06:25:38 am
content: Thanks very much. I never would have seen that.
Episode request: electodynamic shaker with crimped vs. soldered wire terminals - Page 1
Forum section: electronics / general

author: TimInCanada
author_rank: Regular Contributor
timestamp: December 28, 2021, 07:34:22 pm
content: There's been a debate forever over the use of crimping vs. soldering of terminals on wires where there is vibration, for instance, in automotive wiring. (And no shortage of Youtube videos by backyard mechanics showing the "proper" way to solder...)Maybe the key claim of the crimping camp is that the end of a crimp doesn't create the same "hard point" for the wire strands as there is at the end of a solder joint. This gives the strands a little more flexibility so they stand up to vibration fatigue better.So, how about a shoot-out? A test could be ring terminals put on the ends of several cm of wire, with the ring screwed firmly onto the platform of the electrodynamic shaker and the wire 'flapping in the breeze'.Candidates could be:soldered to uninsulated terminal:crimped to uninsulated terminalcrimped to standard insulated terminal:crimped to glue-lined heatshrink-insulated terminal:Of course the wire will be stranded for applications with vibration. Maybe a heavier wire like 12 AWG will make fatigue tests go faster. (It might also be interesting to test a standard stranding against a fine stranding.)I'll also suggest another test, one for butt splice connectors. (e.g.,) The shaker platform might hold, say, 15 cm or more of wire with a butt splice in the middle. The wire would be clamped on each end. The previous set of cases plus one more, the "self soldering" or "solder seal" connector:Comments on YT videos for these from people with short term experience tend to think they're wonderful, but those with long term experience talk about getting hard to diagnose intermittent continuity problems. I wonder if the low melting point solder might be brittle and cause problems due to vibration?Anyway, have fun,Tim

author: thm_w
author_rank: Super Contributor
timestamp: December 29, 2021, 11:04:19 pm
content: Do the self soldering ones have much flux in them? Maybe that results in dry joints.
Problem posting replies - Page 1
Forum section: electronics / general

author: 1audio
author_rank: Frequent Contributor
timestamp: December 26, 2021, 10:48:36 pm
content: For some reason none of my recent posts have posted. They were working yesterday. I can't figure out why. Is there something I'm missing about my account?(Except this worked, maybe attaching image is an issue now?)

author: 1audio
author_rank: Frequent Contributor
timestamp: December 26, 2021, 11:21:55 pm
content: Figured it out- maybe a bug in the forum software. One file that's too large gives an error. 2 files that are too large just gets dumped. And message deleted before posting. Arrgh!!
How does it work - show segment - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: December 26, 2021, 01:22:16 am
content: here is a suggestion for new videos by Dave.I did like this example of how does a USB keyboard work. more video like this please!why not have aHow does it WorkorWhat's In A Signalshow segment? is in an opportunity to give your top end oscilloscopes a workout.here is a good example, see this video about USB & computer keyboardsbut can also apply to any consumer electronics.think of it as an electronic teardown as opposed to the usual electronics hardware teardown.some may not like the probing of industel & military electronics.maybe too secret squirrel go figure. but same obsolete hardware should be ok for probing?
Daily Form notifications - Page 1
Forum section: electronics / general

author: AnalogEngineer
author_rank: Newbie
timestamp: February 10, 2022, 02:16:15 pm
content: I'm getting daily e-mails from EEVBlog saying"Below is a summary of all activity in your subscribed boards and topics at EEVblog Electronics Community Forum today. To unsubscribe please visit the link below."But there have been 0 updates to anything I have posted on for several weeks. Why am I getting these notices and how can I unsubscribe? I see no unsubscribe when I click the link despite the text about unsubscribing.Under Profile "Notifications" I have exactly 1 thread subscribed too, but no one has posted in 3 weeks to it. I have the three boxes at the top checked, but as I read these this would subscribe me when I post or for general forum announcements (from Dave?) "When sending notification of a reply to a topic, send the post in the email" never worked I just got blank notifications.It seems I should not get daily notices unless there is activity on my threads. What could I be missing? How do I stop this?

author: thm_w
author_rank: Super Contributor
timestamp: February 10, 2022, 09:41:18 pm
content: Under profile, account settings, modify, notificationsTry turning all of these offQuote
Thread Locked: Why? - Page 1
Forum section: electronics / general

author: 13hm13
author_rank: Frequent Contributor
timestamp: December 07, 2021, 07:37:32 pm
content: Hi Dave!I think I may be one of the first 100 subscribers to your YouTube channel. Huge fanboy of the vlog! Believe it or not, I began my own YT channel (still active) way before you did in early 2008 ... and I have only slightly over 1k subscribers. CONGRATULATIONS!I recently created and superbly important thread called "Who TF is Simon" .. .and it was quite active. But, oddly, it seems to be locked.Will you please " Open the Pod Bay Doors?" Because " I have the greatest confidence in the mission".

author: tggzzz
author_rank: Super Contributor
timestamp: December 07, 2021, 08:04:28 pm
content: I, and I suspect others, will refer readers to a succinct and accurate response in that thread:https://www.eevblog.com/forum/news/who-tf-is-simon-and/msg3857741/#msg3857741That is as near as I will get to "feeding the troll". Sometimes, as my parents noted w.r.t. my children, "sometimes 'a good bit of ignoring' is beneficial".

author: Cerebus
author_rank: Super Contributor
timestamp: December 08, 2021, 06:09:51 pm
content: Quote from: tggzzz on December 07, 2021, 08:04:28 pmIndeed.And with that note disposed of, what are your Christmas plans? Knowing you you've probably got some interesting food treats lined up.But hopefully not too 'interesting', I share many of your tastes in traditional English provender but draw the line at things that are only considered 'good' once they have developed maggots.
Server down 13th August - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: August 13, 2021, 07:24:37 am
content: The server was bought down today because the 2nd mirror servere FINALLY came back online at GorillaServers after the fire in April, yes it took that long.This needs lots fo tweaks to get working again, gnif is working furiously on it.

author: EEVblog
author_rank: Unknown
timestamp: August 13, 2021, 07:38:02 am
content: Work complete, shold be fully operation again thanks to gnif

author: EEVblog
author_rank: Unknown
timestamp: August 14, 2021, 03:59:22 am
content: You have toThe new server has failed within 24 hours!Power failed or was shut off it seems!Forum still works because it's a redundant system, but may be a bit slower.

author: EEVblog
author_rank: Unknown
timestamp: August 14, 2021, 07:24:37 am
content: Update:QuoteShould I send them a dumpster PC? It's probably more reliableThey are damn lucky they are cheap, but now we know why...

author: Ian.M
author_rank: Super Contributor
timestamp: August 14, 2021, 07:51:35 am
content: WTF??? If the memory was compromised due to the April 4th fire and water damage event, the whole motherboard will also be compromised. It smells like they cant diagnose the failure so are 'shotgunning' it with unnecessary parts replacement. Be glad its their box you are renting!OTOH, refitting heatsinks with fresh thermal paste is the proper thing to do if there is any possibility that a system has been handled roughly enough to disturb them.

author: EEVblog
author_rank: Unknown
timestamp: August 16, 2021, 10:38:41 am
content: It's failed AGAIN!

author: EEVblog
author_rank: Unknown
timestamp: August 16, 2021, 10:44:26 am
content: Reported error

author: rsjsouza
author_rank: Super Contributor
timestamp: August 16, 2021, 10:50:04 am
content: These situations always remind me of this classic:

author: thm_w
author_rank: Super Contributor
timestamp: August 16, 2021, 08:44:15 pm
content: Quote from: Ian.M on August 14, 2021, 07:51:35 amIsn't the whole point of server gear you just swap out everything, unless you are 100% certain of the problem?Then test it outside on your own time if you really want to reuse it. Possibly for more than a few hours, I've had memtest issues show up at the 3hr+ mark.

author: Ian.M
author_rank: Super Contributor
timestamp: August 16, 2021, 09:07:07 pm
content: Quote from: thm_w on August 16, 2021, 08:44:15 pmAs you point out, full replacement would have been the best option for everything, but we know GorillaServers are 'bargain-basement', so 'swap out everything' probably isn't in their 'game-plan' unless a large customer is holding their nuts to the fire!My point was that any mishap that could damage previously functioning memory would be equally likely to damage the motherboard. OTOH if they were total muppets and removed all the RAM to clean it in bulk without appropriate ESD precautions they *could* be seeing a higher than normal incidence of (self-inflicted) RAM failures.
Episode Request: Radiative Cooling - Page 1
Forum section: electronics / general

author: DrG
author_rank: Super Contributor
timestamp: August 09, 2021, 09:18:44 pm
content: I enjoy the “busted” videos. They are entertaining and educational. Too often in those cases, however, I have smelled enough BS in my life to really not need to know all of the engineering behind the call out (even though it is fun to learn about it). That is, I have enough experience to feel pretty strongly that much is amiss based on non-engineering aspects of a lot of these companies/products/approaches/pitches/claims.My suggestion is to look at a company and/or the technology that I don’t think belongs in the typical crowd-funded or dodgy technology sections.This is the company (and I have no affiliation) and they are not alone.https://www.skycoolsystems.com/faqs/(intentionally point to the FAQ page).I also note that there is one small thread (https://www.eevblog.com/forum/dodgy-technology/anti-solar-panels/msg2732422/#msg2732422) already on the general subject.In a sense, I guess I am simply saying thatI want to watch a Dave video about practical aspects and possibilities of radiative cooling.I want to hear about the other sides of the issue, not unlike the lengthy “I bought an electric car” video and thread. I like to see intelligent contrarian (if that is where it falls) takes on issues and wonder why, so often, they are not sought out by Governments before deployment of a whole host of technology (I worry about the US infrastructure investment in that regard). Sometimes I feel like we have learned nothing from the security debacles we endure regularly. It as though the breaches are simply baked into the pricing models because that is easier.But I am digressing…and if you already did one or think it is stupid suggestion, n/p.

author: thm_w
author_rank: Super Contributor
timestamp: August 10, 2021, 09:05:27 pm
content: Looks interesting. They are saying it can do 300W/m2here:https://www.skycoolsystems.com/data-center-cooling-case-study/Good solar panel might be 230W/m2.So put that solar power into an AC unit with a COP of 2-4? You'd have somewhere in the range of double the heat dissipation from solar power, but only during peak hours.On average it might beat solar?
Episode Request: Understanding Alkaline battery recharging - Page 1
Forum section: electronics / general

author: waoj
author_rank: Contributor
timestamp: June 06, 2021, 11:45:09 am
content: Hi Dave,Longtime viewer here from Kansas City, Kansas, USA (watch out for tornadoes!), and I've been curious about something for a while that I bet you understand a lot better than most.How do alkaline battery chargers "recharge" non-rechargeabe batteries?What do the chargers actually do?Why do the batteries leak fluid?How and why does their capacity diminish when recharged?How does the energy cost of charging compare to the cost of new cellsWhy is it futile to recharge?(assuming it is)I'm more or less wanting you to talk me out of trying to recharge them. But I feel like my current understanding alone is not good enough to justify giving up.I only buy lithium or nimh cells these days. Are there strong arguments for buying alkaline and using an alkaline recharger?I searched through your video archive and watched anything that sounded like it could be related, twice, over the last month before writing this. You did some good observational research work on leaky cells at one point that showed results but didn't go into chemistry details. If you think you have covered it before in this detail, sorry for missing it but I'd be grateful if you would point out the episode #. You're the only person I can think of who I believe could understand this well enough to explain it!-Billy Croan
Translation - Page 1
Forum section: electronics / general

author: fvillaf
author_rank: Newbie
timestamp: June 26, 2021, 03:36:46 pm
content: Hi Dave,Very good work!!! your videos are amazing!Could you please to consider adding subtitles to your videos? (It is very easy today).I (and I suppose, many people), have some issues to interpret your spoken words because a minor hearing disability.Thanks in advance!Federico

author: bob91343
author_rank: Super Contributor
timestamp: June 26, 2021, 09:25:38 pm
content: I have a similar problem. My hearing, even with aids, is still bad.

author: thm_w
author_rank: Super Contributor
timestamp: June 29, 2021, 08:19:28 pm
content: Auto generated subtitles are available on his youtube videos. What am I missing here?

author: jpanhalt
author_rank: Super Contributor
timestamp: June 29, 2021, 09:08:33 pm
content: English subtitles would help.Monty Python was a favorite of mine:
Alkaline battery charger???? - Page 1
Forum section: electronics / general

author: achilleas_v
author_rank: Newbie
timestamp: July 19, 2016, 05:46:50 pm
content: I came across this product?Is it for real?

author: edavid
author_rank: Super Contributor
timestamp: July 19, 2016, 05:47:50 pm
content: Quote from: achilleas_v on July 19, 2016, 05:46:50 pmNo. Either it will do nothing, or it will make the batteries leak

author: SeanB
author_rank: Super Contributor
timestamp: July 19, 2016, 06:45:49 pm
content: It will charge them once, but after the second time it is almost guaranteed they will either leak or burst.You could partly recharge older non alkaline zinc carbon cells, but the capacity loss on each cycle was considerable.

author: Brumby
author_rank: Unknown
timestamp: July 20, 2016, 05:20:44 am
content: I see it also recharges NiMH and NiCad....But as for regular alkalines (ones that have NOT been designed for recharging)* Their mechanical structure is not compatible with gas generation that occurs during recharging. This means there is a significant probability that they will leak and a possibility that they may explode.* Capacity will be nowhere near that of a new battery and in high current devices, it is questionable if it will provide any useful operating ability.* The number of charge/discharge cycles you might get are not likely to be high - and the capacity will fall with each one.If you can get 10 charge/discharge cycles with each providing more than 25% of the original energy available in a new battery, then I think there would be a few of us here that would like to know about it. Be warned - you will need to provide solid evidence...Personally, I wouldn't touch one of these with any expectation of being impressed.

author: SeanB
author_rank: Super Contributor
timestamp: July 20, 2016, 07:08:40 am
content: I did build one years ago, as I was using a portable radio which would eat D cells on a regular basis. So I built one ( not too complex, was an Elektor article in the 1980's), and at least it was able to increase battery life from a week to around 3 months, though only for the cheap non alkaline cells. Then they would show signs of leakage, and I would toss them, and go out and buy another 4 D cells. modified an old NiCd charger to do it, using the case and a little modification of the inner side ( and removal of most of the rest of the components on the board along with the switch for selecting battery type) board to do it.

author: waoj
author_rank: Contributor
timestamp: June 06, 2021, 11:30:21 am
content: I've used a charger for Alkaline batteries on and off for the last ten years with mixed results. I'd love an EEVBlog eposode explaining the electrochemistry and why it sucks to recharge Alkaline on a more technical level than "they leak". I don't disagree. I keep the charger upside down when I use it because its easier to clean them up if it drips on the removable lid.But I'd love to know on a whiteboard, why they leak, and specifically how their capacity diminishes on each recharge.
Unable to post - Page 1
Forum section: electronics / general

author: krisskross
author_rank: Newbie
timestamp: September 24, 2021, 03:47:05 am
content: Hi, im new here. I started a post in one of the sections, it posted but the thread is nowhere to be found. Im confused. Please help

author: bob91343
author_rank: Super Contributor
timestamp: September 24, 2021, 04:06:55 am
content: I have had similar problems. Try going to the top of the screen and search for the topic or some peculiar text from it and see if it comes up.

author: I wanted a rude username
author_rank: Frequent Contributor
timestamp: September 24, 2021, 06:01:15 am
content: Quote from: krisskross on September 24, 2021, 03:47:05 amYour post count is 1, so your comment at the top of this thread is currently your only post on the board. This may be because the original post failed (Simple Machines Forum is quirky), or it was deleted (as a new user there is a higher barrier to entry ... e.g. a link to a blog or product may get deleted even if an established user could make exactly the same post).Maybe just try again?

author: krisskross
author_rank: Newbie
timestamp: September 24, 2021, 10:18:47 am
content: Quote from: I wanted a rude username on September 24, 2021, 06:01:15 ami tried re posting, still same. over here its posting successfully but there nothing.
Battery chemistry episode? - Page 1
Forum section: electronics / general

author: Moriambar
author_rank: Unknown
timestamp: May 16, 2021, 06:50:57 am
content: Hello,I've recently seen episode 1371 (yeh, I've been a bit busy and missed a few) and I learned about Lithium Thionyl Chloride batteries, which are perfect for a project I had in mind and I did not know about them.Unfortunately I really wouldn't know how or where to find out about all of the battery chemistry and how to choose the perfect battery for a project.This is not only to guarantee the best performance or the most economically advantageous solution for a single project, but it can also mean less waste, and less pollution.I think this could be an awesome topic and I hope mighty Dave agrees.Otherwise I'll post in beginners or some other board to see where to find documents to learn by myself.Cheers

author: jpanhalt
author_rank: Super Contributor
timestamp: May 16, 2021, 10:36:32 am
content: Two sites worth looking at:1)https://batteryuniversity.com/(discusses all batteries in less technical terms, lots of practical information)2)http://mysite.du.edu/~jcalvert/phys/elechem.htm(more technical discussion of electrochemistry)3) Wikipedia (if you want to get completely lost)

author: Moriambar
author_rank: Unknown
timestamp: May 16, 2021, 02:22:40 pm
content: Wow batteryuniversity is a gem.Wonderful thanks
Maybe time for a new 'busted' episode: solar / light powered headphones - Page 1
Forum section: electronics / general

author: RayG
author_rank: Newbie
timestamp: April 19, 2021, 07:10:07 pm
content: Ton of marketing BS - this must be a real deal:https://www.theverge.com/2021/4/14/22383302/urbanista-los-angeles-solar-powered-noise-cancelling-wireless-headphones. Check the cell manufacturer's site: https://www.powerfoyle.com/. Never seen that much technical info...

author: thm_w
author_rank: Super Contributor
timestamp: April 19, 2021, 10:24:32 pm
content: QuoteSo you can do some calculations:- 750mAh = 50h- 15mAh = 3hAssuming 3.8V cell, 1h of solar charging is occurring at 60mW. Seems possible and reasonable power level? But yes a bit pointless unless you spend all day out in the sun with these things on.The helmet is kinda interesting as well, but nowhere near bright enough:https://journal.pocsports.com/poc-launches-the-omne-eternal-the-worlds-first-self-powered-helmet-with-endless-energy/
How about an automotive electronics forum section? - Page 1
Forum section: electronics / general

author: Zeyneb
author_rank: Regular Contributor
timestamp: February 16, 2021, 03:08:47 pm
content: I’d argue that an automotive electronics forum section would make sense on this EEVblog forum. You know with discussions about ECU, CAN bus, alternators, relay wiring, connectors and the wiring harness.I’d like to know what a moderator would think of that?

author: mindcrime
author_rank: Unknown
timestamp: May 21, 2021, 04:09:34 pm
content: FWIW, I would love to see this. Modern cars area rolling bundle of microcontrollers and wiring, and there's a lot of dig into in this space.
Forum footer links contrast is not so good  - Page 1
Forum section: electronics / general

author: eti
author_rank: Super Contributor
timestamp: October 29, 2021, 06:32:42 am
content: I hope I’m not seen as griping - the forums footer links such as “Mobile” and “WAP”, et cetera are EXTREMELY low contrast, being an off shade of blue, and they’re superimposed onto a “perforated” style black pattern. Is there a reason this can’t be modified - it can’t be that hard surely? It’s a usability flaw.Thanks mate.

author: wilfred
author_rank: Super Contributor
timestamp: October 29, 2021, 07:46:50 am
content: https://www.eevblog.com/forum/chat/totally-illegible-forum-footer-links-user-interface-fail/Best of luck. I'm not suggesting the other guy got banned for raising this but you may want to rethink it. It wasn't pretty.

author: eti
author_rank: Super Contributor
timestamp: October 29, 2021, 08:27:51 am
content: Bit confused. I have to switch my iPhone to full mode for certain actions, and it’s a tiny screen and the elements are low contrast. I’mnot griping I’m only asking if it has been considered as something to change? Obviously if it’s a lot of work, and I appreciate there are other things that occupy forum admin time, then never mind it’s not the be all end all.Thanks 👍👍
Perhaps an episode suggestion? The curious case of the potentiometer - Page 1
Forum section: electronics / general

author: STMartin
author_rank: Contributor
timestamp: March 26, 2021, 07:32:34 am
content: I design and build apparatus for safety testing, and a few years ago came across a safety standard that required using a potentiometer to measure voltage.Voltage dividers aside, as an amateur electronics enthusiast this made as much sense to me as measuring a mountain with happiness (although I'm sure some would disagree).Being new to the field, and somewhat reluctant to try and call out an engineer who was almost certainly smarter than me, I looked it up first before I raised any alarm. It turns out there actuallyisa potentiometer (the instrument) that measures voltage, from which the potentiometer (the component) seems to derive it's name from. It's essentially a bridge circuit that can effect a very accurate voltage measurement without placing a load on the source. Apparently, it is still used in metrology to this day.In our case, we were measuring galvanic voltage in an electrolyte of antifreeze. Something I'd expect to produce very saggy voltage. A precise, no-load voltage measurement would make perfect sense. In the end, this isn't what the original author of the standard intended, and the standard was changed instead, but I digress.I think it would be cool to see Dave compare a potentiometer (the instrument) with his fancy equipment against a saggy voltage source. Something that could be severely impacted by even the smallest load. See which one is more accurate. I'd like to see if there is any mileage to be had from such an archaic instrument.I'm sure there are plenty of people here who can tell me straight away why this is a useless experiment, but it'd be educational for us newbies, no?Referencehttps://en.wikipedia.org/wiki/Potentiometer_(measuring_instrument)
Reply Timeout TEST - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 03, 2021, 11:40:13 pm
content: Anyone else getting the timeout error posting replies?I seem to get it every time now regardless of how much time I take to post.

author: EEVblog
author_rank: Unknown
timestamp: March 03, 2021, 11:40:34 pm
content: I just got it for this post:

author: EEVblog
author_rank: Unknown
timestamp: March 03, 2021, 11:41:45 pm
content: Test after logging out and back in.EDIT: Worked!
Better way to find shorted power output transistors. - Page 1
Forum section: electronics / general

author: Tacheon
author_rank: Newbie
timestamp: March 04, 2011, 08:45:53 pm
content: Greetings from up above Dave...I was honored by Robert Pease publishing a question I emailed to him on how to more efficiently find shorted power transistors in audio amplifiers that are paralleled in circuit. Below is the link for the letter and comments by people:http://electronicdesign.com/article/analog-and-mixed-signal/Bob-s-Mailbox-Audio-Power-Amps-DAC-Stuff-Spice-Suggestions-And-Lunar-Engineering.aspxI would be very thankful and grateful if you would comment, or preferably do a program on creative ways to do this.Aram

author: Fraser
author_rank: Super Contributor
timestamp: March 05, 2011, 09:50:05 am
content: Aram,I use a 'ToneOhm 850' by POLAR instruments for such situations. This is no ordinary 'simple short tracer' or milliOhm meterIt can measure voltage drop along a short copper conductor. It can also ac stimulate a circuit that contains a short and trace the current to the lowest impedance using it's built in non-contact flux probe.The models to look for are the ones with the flux probe capability....namely 700 / 850 / 850A / 950. Suggest you avoid the simpler 500 / 550 models.Take a look here:http://www.polarinstruments.com/http://www.polarinstruments.com/pdf/brochures/Toneohm950.pdf- the latest version but expensive :-(http://www.polarinstruments.com/support/pcb_troubleshooting/AP201.htmlManuals -http://www.polarinstruments.com/de/manuals/manuals.htmlhttp://www.tv.quuq.org/forum/index.php?topic=3982.0http://www.artisan-scientific.com/70430.htmI picked up an 'as-new' ToneOhm 850 on e*ay for only GBP50 but I was very lucky as they normally retail for much more than that on the used market. The unit has proved itself perfect for finding shorted or low impedance tantalum capacitors across power supply rails. There are often many such capacitors and other components on those rails yet it copes fine even when multiple capacitor failures are present :-) The ToneOhm is much reveered by repairers of Racal equipment as tantalum cap shorts are commonplace on older Racal equipment. It would hopefully work in your scenario as well.

author: BobBeBob
author_rank: Regular Contributor
timestamp: March 01, 2021, 09:50:23 pm
content: hello, I came across one of your posts about polar toneohm 850 tear down. now I cannot find it. I am trying to make my probes for a toneohm 950 and and the info you had in there would have been very useful to me. can you help to me find that post again please.

author: Brumby
author_rank: Unknown
timestamp: March 01, 2021, 11:32:32 pm
content: This has to be a record - or close to...........This thread is10 yearsold. Necropost Gold.