hybridfree/eevblog-posts huggingface dataset:
The Ultimate Driving Simulator - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: November 21, 2017, 06:20:59 am
content: Just awesome!

author: Falcon69
author_rank: Super Contributor
timestamp: November 21, 2017, 07:10:48 am
content: hmm, all I got out of that is free beer. I need to go to Iowa.
Looking for reccomendations for a workbench - Page 1
Forum section: electronics / general

author: cbc02009
author_rank: Regular Contributor
timestamp: November 20, 2017, 01:48:28 pm
content: Hi all!All of my equipment is taking over my computer desk, and so I'm looking to purchase a workbench for all my stuff, and I was wondering if anyone had any reccomendations (from IKEA, amazon, whatever). I would just build one out of extra lumber, but since it's going up in the office it has to "match" and "look nice" etc according to the girlfriend.Any reccomendations for part storage (hanging bins, cabinets, etc.) would also be greatly appreciated! Thanks!

author: Zucca
author_rank: Unknown
timestamp: November 20, 2017, 11:00:10 pm
content: https://www.eevblog.com/forum/chat/whats-your-work-benchlab-look-like-post-some-pictures-of-your-lab/

author: cbc02009
author_rank: Regular Contributor
timestamp: November 21, 2017, 02:09:25 am
content: Quote from: zucca on November 20, 2017, 11:00:10 pmThank you, that's very helpful! Can't believe I missed it

author: GreyWoolfe
author_rank: Unknown
timestamp: November 21, 2017, 03:12:26 am
content: Thankfully, I have dedicated office space so SWMBO has no say out here. Everything I have built is for function over form. You can still build, just add the extra steps of sanding, staining and varnishing and pick better grades of lumber. At the end of it, you will have something custom to your needs instead of adapting something to get you 98% there, that last 2% will annoy the crap out of you.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: November 21, 2017, 03:38:31 am
content: I found an IKEA Jerker with an extra shelf on Craigslist, and I found a Jerker flat desk at Habitat for Humanity.I slapped a Home Depot particle board sheet on the flat desk to absorb impacts, should last quite a while, and both desks survive multiple disassembly cycles.

author: Halcyon
author_rank: Unknown
timestamp: November 21, 2017, 04:46:53 am
content: I simply went to Ikea and bought a couple of sets of drawers (one for either side of the work surface) and placed a 2200mm length of oiled solid timber bench top straight on the top. The only thing "holding" it in place are some silicone stick-on anti-slip feet.It looks really nice:https://www.bunnings.com.au/interbuild-2200-x-600-x-26mm-acacia-solid-oiled-hardwood-project-panel_p8330032

author: HalFET
author_rank: Frequent Contributor
timestamp: November 21, 2017, 06:20:19 am
content: I went for a solid oak counter top from ikea, remarkably impact resistant
Check the Mbit rates of different providers? - Page 1
Forum section: electronics / general

author: Physikfan
author_rank: Regular Contributor
timestamp: November 18, 2017, 11:38:16 am
content: Hello to all IT insidersPlease, my question:I currently have access to Internet boxes different providers at the same location.How can I reasonably objectively check the Mbit rates of different providers?Please the answers in understandable language for non-professionals in digital electronics!!!Best regardsPhysikfan

author: rdl
author_rank: Super Contributor
timestamp: November 18, 2017, 02:39:13 pm
content: You could try this:http://www.dslreports.com/speedtest

author: Lord of nothing
author_rank: Super Contributor
timestamp: November 18, 2017, 02:41:13 pm
content: Where are you from?

author: Ampera
author_rank: Super Contributor
timestamp: November 18, 2017, 04:05:28 pm
content: Online speed tests are available nearly everywhere. Just Google "Speed test" and you should be able to find one.
LBO-514A Oscilloscope on but nothing on screen - Page 1
Forum section: electronics / general

author: mich82
author_rank: Newbie
timestamp: November 18, 2017, 11:16:07 am
content: Hello, a new member here, and I need your kind assistant to fix my OSCILLOSCOPE. I bought a used Leader LBO-514A Oscilloscope, it powers on with led orange lit but no trace/Beam on the crt screen. I opened it and checked the PSU pcb and found 4 bad transistors on the -15 and +15 Rails, replaced threm all and got the CRT filament lit orange light but still NOTHING on the screenRight now, all the required voltages for Scope to work are present (ie -15,+15, 250v ) but still no trace on the screen on the Scope is on. I only see a DOTTED Trace/Light which flash ONCE upon switching down the power button.What could be the problem? PLEASE HELP ME FIX my LBO-514A Oscilloscope.
Video camera for Youtube channel - Page 1
Forum section: electronics / general

author: fubar.gr
author_rank: Unknown
timestamp: November 17, 2017, 10:17:08 pm
content: I am looking for a better camera for my YT channel.My current one is a Sony HDR-PJ240E. Its main problem is that it needs lots of light to get an adequate image quality. In a normally lit office, the colors wash away and the image gets kinda grainy and blurry. Plus, it doesn't have an external mic input.In most of my videos I show electrical or electronic stuff laid on a table, so I need good macro. And image stabilization helps too. I would also like it to be future proof with 4K capabilities.What would you suggest? My budget is 1000-1500 euros.Please don't recommend DSLRs or mirrorless still cameras. I understand that in some cases they can outperform traditional video cameras in terms of quality, but they are inconvenient for the type of filming I do.
I don’t know what I’m saying but I’ll keep trying to sell it anyway... - Page 1
Forum section: electronics / general

author: aargee
author_rank: Frequent Contributor
timestamp: November 17, 2017, 12:30:12 pm
content: This is cute (reading the description)...http://www.icstation.com/mobile/m222-motor-speed-control-module-800w-motor-driver-p-12584.html

author: iainwhite
author_rank: Unknown
timestamp: November 17, 2017, 02:30:20 pm
content: I like the reference to a 'double MOS tube' - the seller must be nostalgic for valve/vacuum tube designs.

author: WorldPowerLabs
author_rank: Regular Contributor
timestamp: November 17, 2017, 04:04:35 pm
content: I've noticed that sellers from the Far East will often refer to any kind of display as a "tube", e.g., "7-Segment LED display tube". They also frequently use "bits" when they mean "digits".Quote from: iainwhite on November 17, 2017, 02:30:20 pm
RSD Academy - How Diodes Work (remake) - Page 1
Forum section: electronics / general

author: rsduhamel
author_rank: Contributor
timestamp: November 16, 2017, 01:35:28 am
content: I just uploaded my latest educational video,How Diodes Work. It is a quick demonstration of how a diode allows current to flow in only one direction. This is followed by a demonstration of how the voltage reacts when you increase the forward current.It is a remake of the one I uploaded only two weeks ago. I was ultimately unhappy with it, so I started from scratch. The new video, I think, is more clear and detailed. The video is at:https://youtu.be/tWaWBoc5X_oThanks to all of you who have watched my videos ans subscribed to my educational channel (RSD Academy -https://www.youtube.com/channel/UCOausWDNRDJikQ11gSLj7nA). The channel is less than 500 views away from becoming a YouTube partner.Bob DuHamel
Australian electrical socket outlets with switches - Page 1
Forum section: electronics / general

author: knks
author_rank: Regular Contributor
timestamp: November 13, 2017, 01:55:21 am
content: Most outlets in Australia have switches, like the one in this pictureHowever, these switches (or at least the ones in my house) only switch Neutral wire. Why Neutral? Isn't it safer to switch Live instead?

author: sleemanj
author_rank: Super Contributor
timestamp: November 13, 2017, 02:14:24 am
content: I just grabbed an old switched single socket "Ring Grip Made in Australia" one out of my junk drawer and it switches active.

author: Monkeh
author_rank: Super Contributor
timestamp: November 13, 2017, 02:20:05 am
content: Quote from: knks on November 13, 2017, 01:55:21 amEither it's miswired, or it's double-pole and you've welded one pole.

author: Brumby
author_rank: Unknown
timestamp: November 13, 2017, 03:43:41 am
content: The ones I've seen switch the active.If this is not the case for you ... then something is very wrong.

author: PTR_1275
author_rank: Frequent Contributor
timestamp: November 13, 2017, 10:43:07 am
content: I've never seen a outlet switch neutral only. They all should switch active unless it's double poleEven the cheap crappy bunnings ones switch active.

author: Halcyon
author_rank: Unknown
timestamp: November 13, 2017, 11:02:18 am
content: Quote from: PTR_1275 on November 13, 2017, 10:43:07 amI think it's a requirement under the standard. Single-pole switches active and double-pole switches active and neutral (required for RVs etc...)

author: knks
author_rank: Regular Contributor
timestamp: November 16, 2017, 12:38:22 am
content: I checked again and now it switches activeI think I had a brain fart when I tested it first time.
In search of... a decent 3A LDO step-down (buck) converter module - Page 1
Forum section: electronics / general

author: MartyMacGyver
author_rank: Regular Contributor
timestamp: November 20, 2017, 08:20:22 am
content: Note: this thread is meant to inspire some discussion on the matter and get recommendations and information.I'm looking for anadjustablestep-down buck converter module for smaller projects. It should have decent efficiency (better than a linear device; switching at a decently high frequency) that can supply up to 3A (edit: or even 2A, as long as it's stable at that current) at anywhere from around 2V to 24 V from an input of up to 30-35 V and is adjusted with one or more multi-turn potentiometers.I can find them everywhere... however, what I'm gathering is that they are all crap and/or fake:The LM2596 modules ubiquitous - and often (always?) centered around a fake LM2596. I've read that they tend to fail in a way that puts full Vin on Vout.There are not-so-LDO devices based on the XM1584 - which might be handy if not for the fact they all come with a single-turn potentiometer that's virtually impossible to set to a consistent, desired voltage.Then there are modules based on the XLSEMI XL6009 (and now, XL6019) devices... but they are buck-boost and I'm not sure what side-effects they bring to the table.For all the negative reviews and complaints I've seen here and elsewhere, I'm not finding any such modules that are supposed to be known good/reliable, even if a little more expensive (the BOM cost for genuine parts isn't astronomical).As there is clearly a big market for cheap and unreliable buck converters, one would expect a market for not-quite-as-cheap-but-solid modules as well. So what's out there that's known good and reliable (when gotten from a reliable vendor) and ready to use?
Whatever happened to the "Richard Clapton" emoticon?  - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: November 14, 2017, 11:22:38 pm
content: /.

author: Richard Crowley
author_rank: Super Contributor
timestamp: November 14, 2017, 11:36:03 pm
content: Removed by the P.C. police?The animal protection groups will demand removal of this one next:

author: Cyberdragon
author_rank: Super Contributor
timestamp: November 15, 2017, 01:24:48 am
content: We have this:But I never remember it having an afro.
Old radio bugs fashion - Page 1
Forum section: electronics / general

author: mcinque
author_rank: Unknown
timestamp: November 12, 2017, 09:18:16 am
content: I discovered this site about radio bugs, cryptos and covert operation and found these jewels.Am I the only fascinated by their low-space engineering, audio masking technology and their lovely hand made assembly?1975My Favourite. Really love the low space engineering, his masking technology and assembly."Uses a sophisticated masking scheme, based on Pulse Position Modulation (PPM), known asDirty Pulse (DP) masking."http://www.cryptomuseum.com/covert/bugs/ec/srt90/index.htmLate 1970"To make its discovery even more difficult, the audio signal is masked by modulating it onto a 12.5 kHz subcarrier (SC) first. This means that if the 600 MHz radio signal is intercepted at all, the eavesdropper will only hear a silent carrier."http://www.cryptomuseum.com/covert/bugs/opec/index.htm1990Unmasked audio but a little jewelhttp://www.cryptomuseum.com/covert/bugs/necktie/index.htm

author: mcinque
author_rank: Unknown
timestamp: November 14, 2017, 04:47:30 pm
content: Apparently I'm the only fascinated in that bugs...

author: richard.cs
author_rank: Super Contributor
timestamp: November 14, 2017, 05:17:47 pm
content: It is interesting, both the construction and the modulation schemes, I just don't have a lot to add. After a lot of clicking around I did eventually find the block diagrams for one of them on the cryptomuseum site.

author: bd139
author_rank: Super Contributor
timestamp: November 14, 2017, 06:22:35 pm
content: Quote from: mcinque on November 14, 2017, 04:47:30 pmAnother bug fancier here. I used to make them when I was a kid. Thanks for posting this - really interesting

author: amyk
author_rank: Super Contributor
timestamp: November 15, 2017, 11:55:34 am
content: In the same space today, you could fit a whole GSM mobile phone:https://ha.cking.ch/s8_data_line_locator/
facebook Use a phone to verify your account - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: November 13, 2017, 07:59:38 am
content: i don't own a mobile phone and never will because i have no use for one but now im unable to use my facebook without Using a phone to verify my accountso what can i do

author: woody
author_rank: Frequent Contributor
timestamp: November 13, 2017, 08:09:35 am
content: Count your blessings?

author: Rerouter
author_rank: Super Contributor
timestamp: November 13, 2017, 08:14:19 am
content: find the oldest phone you can, one well pre android/iphone, throw in a $2 prepaid sim, and verify with that?

author: Brumby
author_rank: Unknown
timestamp: November 13, 2017, 08:52:57 am
content: Quote from: Rerouter on November 13, 2017, 08:14:19 amJust be careful that it operates on a network that is still functioning.

author: Ian.M
author_rank: Super Contributor
timestamp: November 13, 2017, 10:23:14 am
content: Its not uncommon for internet sites and services that use 'verify by phone' to fail to verify if you use a 'burner' phone i.e using a prepayed SIM that hasn't been registered with your personal details. They are looking for traceability so they don't get left holding the baby if subpoenaed by Law Enforcment or three letter agencies.

author: Halcyon
author_rank: Unknown
timestamp: November 13, 2017, 10:56:09 am
content: I don't use Facebook (for very good reason) but most of those sites like Google, Hotmail etc... will either give you the option of an SMS or a voice phone call which will read out a verification code. See if you have the option of providing a phone number to receive such a call.Quote from: Ian.M on November 13, 2017, 10:23:14 amCompanies don't have that kind of access to account holder's details. Provided that number hasn't been used several times over a certain time frame, they will allow it. Companies have no way of verifying whether the number provided matches a particular person. There is really no way to determine a "burner" phone account from any other.

author: Ian.M
author_rank: Super Contributor
timestamp: November 13, 2017, 12:02:39 pm
content: It depends - there is a standard for 3rd party sites and services to request the carrier to verify identity.https://www.gsma.com/identity/mobile-connect

author: eugenenine
author_rank: Frequent Contributor
timestamp: November 13, 2017, 12:31:30 pm
content: Could be worse. I couldn't sign into Google's 'find my phone' because it wanted to text a code to my (missing) phone to allow me to sign in, someone didn't think that through.

author: Halcyon
author_rank: Unknown
timestamp: November 13, 2017, 10:54:24 pm
content: Quote from: wilfred on November 13, 2017, 10:42:17 pmBrilliant advice everyone should follow!One service, one account.I know it's tempting to "make it easy" by logging in with credentials from other services, but all you're doing is sharing more of your personal information, habits, etc... to third parties. They are making money off you. When it comes to things like social media, you are the product, not the customer.
Rant: Project numbers ... - Page 1
Forum section: electronics / general

author: capt bullshot
author_rank: Super Contributor
timestamp: November 14, 2017, 02:39:14 pm
content: Does anyone use project numbers to have an invariable and unique reference identifier for all the stuff that accumulates through all the phases of a project?Like concepts, requirement specifications, schematics and layout, mechanical drawings, parts ordering history, BOMs, protocols, customer and vendor communications, ...Like the number is fixed at the very beginning of a project after thoroughly checking it for compliance to all the written and unwritten rules and habits?Now, a number of people have done their work based on this number, the number found it's way into the ERP, a lot of documentation was created, things were ordered, project is near to reach it's most important milestone ...What would you do if someone discovers now, "We have taken a number for this project that would be needed for some other project since we randomly decided to rename the other project" ? An decides to change the number?Correct, just sit down and change a bazillion of documents and references ...

author: bd139
author_rank: Super Contributor
timestamp: November 14, 2017, 03:26:12 pm
content: Ugh yes. This is a common failure mode. It gets worse when someone decides to have an excel spreadsheet with the IDs in. Then someone goes on holiday and is working off a mailed copy, then someone else gets forwarded one. Next time you’ve got 3 different IDs for the same thing.This is why everything went ERP/DMS etc. Humans fuck up everything that requires synchronisation.

author: Fire Doger
author_rank: Regular Contributor
timestamp: November 14, 2017, 05:02:28 pm
content: <Project Name> <Part Number> <Part Version>First you choose the project name, something meaningful.Then each department gets a range of part numbers to use as they wish. For ex. PCB got 0-1000, enclosure 2000-3000, etc...And every department is responsible to keep track of their versions.And you end up with "Lemon 853 V1.2.7" for Main pcb on a single project.Next project "Tomato 123 V1.0.0"My team is responsible for a couple of parts, we have to choose numbers from predefined huge range which doesn't change no matter what. If you mess it up you fix it.Version control inside a team is an other story but between different projects everything is just fine.
Will µSleeve's be restocked? - Page 1
Forum section: electronics / general

author: timgiles
author_rank: Regular Contributor
timestamp: November 05, 2017, 07:47:20 pm
content: Hi Dave,Just wondering if the µSleeves will be restocked? and if they will, before Christmas?Thanks for your time

author: firstcolle
author_rank: Regular Contributor
timestamp: November 08, 2017, 01:32:50 pm
content: it would be nice!

author: PChi
author_rank: Frequent Contributor
timestamp: November 12, 2017, 05:39:57 pm
content: I am also interested in buying some.
Hackaday Superconference 2017 - Mike Harrison - Page 1
Forum section: electronics / general

author: ruairi
author_rank: Frequent Contributor
timestamp: November 12, 2017, 04:41:13 am
content: I was there today and really enjoyed Mike's presentation.My other favorite of the day was Kristin Paget's "IoT Security: A Study of Failure".

author: TMM
author_rank: Frequent Contributor
timestamp: November 12, 2017, 10:02:13 am
content: Manchester code only has two frequency components huh? Manchester has no DC, but the spectrum still extends down to DC. If your data is repeating at say 100Hz, then bam you have a 100Hz component in your signal. It will be attenuated compared to the NRZ signal but it's still there. You can add filtering after the manchester encoder if you need to bandwidth limit but if you put a 20kHz brickwall highpass filter on 20kbaud manchester you will destroy the data integrity as there will be strong repetition at 10kHz (2bits), 6.67k (3bits), 5k (4bits) etc. The phases of these 10k, 6.67k, 5k etc components are constantly changing with the data so instead of having peaks at discrete frequencies you end up with a broad frequency spectrum.For that reason you'd probably use >100kbaud data rate and then implement a steep 20kHz high pass filter to avoid interference with <20kHz systems. When you look at the data in the time domain after the brickwall filter it will seem to have some low frequencies added to it - this is actually the low frequencies that the brickwall filter removed. This can be dealt with by a simple circuit that recovers the 'DC' level (mid point between high and low) so you can stick the bandwidth limited signal into a comparator and 'recover' it to a logic level signal. If you try to highpass 50kbaud manchester at 20khz the effect will be bad. If you highpass 10Mbaud at 20k it will be barely noticeable and you can probably use the signal without needing to 'recover' the lost components. Ultimately you are still throwing away data by highpassing so you'll have increased bit error rate. It's up to the designer to decide where to draw the line between BER and limiting your transmission bandwidth - or in the case that your system must have a limited bandwidth, where to draw the line between data rate and BER.
After 10 short months - the worlds smallest factory has another video.... - Page 1
Forum section: electronics / general

author: rx8pilot
author_rank: Super Contributor
timestamp: November 10, 2017, 06:24:35 am
content: What can I say? I have been mind-numbingly busy but my micro-factory is expanding and has a new video.Nearly all of my plans were frozen in time because I got a lot of work. All of the proceeds are going back into the business and we have some big new equipment arriving next week. Should be fun to watch. I believe I have been able to streamline the video making process enough to actually allow me to show people what is going on.Check out the updates - stay tuned for a big delivery next week. A rare unboxing next week......hint it takes a team of 3 people and special equipment just to deliver it.https://youtu.be/j4IeSTIaLaYhttps://youtu.be/M80hfZ1mwSEhttps://www.eevblog.com/forum/manufacture/the-worlds-smallest-factory-is-taking-shape/msg1101918/#msg1101918

author: chriswebb
author_rank: Unknown
timestamp: November 10, 2017, 07:26:33 am
content: Subscribed. Really like the idea you are having for the channel. As a fellow small business owner, a lot of people don't really have a great appreciation for all the work that needs to be put in. I can't wait to follow your ups and downs, especially wanting to see the problems specific to a small manufacturer. Keep up the great work!edit: *Removed the reference to the spoiler* don't want to ruin anything...

author: rx8pilot
author_rank: Super Contributor
timestamp: November 10, 2017, 07:40:21 am
content: You have a sharp eye....indeed there is a spoiler in there.Short and misplld from my mobile......

author: woody
author_rank: Frequent Contributor
timestamp: November 10, 2017, 08:28:37 am
content: Man, you're an inspiration. Makes my own 230 sq/ft feel spacious! I'm very curious what this new machine might be

author: trophosphere
author_rank: Frequent Contributor
timestamp: November 10, 2017, 08:44:28 am
content: I really like the direction you have planned for the channel as well as your presentation style. Subscribed.

author: rx8pilot
author_rank: Super Contributor
timestamp: November 11, 2017, 10:27:49 pm
content: I think the next video is scheduling/time management.Everyday, my 'schedule' is just a series of unexpected events and distractions that obliterate productivity.Short and misplld from my mobile......
#of pages in the beginner section - Page 1
Forum section: electronics / general

author: grifftech
author_rank: Frequent Contributor
timestamp: November 09, 2017, 08:05:38 pm
content: it is at 420

author: JacobPilsen
author_rank: Regular Contributor
timestamp: November 10, 2017, 07:44:20 pm
content: Same as Country calling code of Czech Republic (+420).

author: Red Squirrel
author_rank: Super Contributor
timestamp: November 10, 2017, 09:42:13 pm
content: This brings an interesting question, is it better to do electronics while on weed? It will mask the toxic fumes of soldering.
A Circular Version Of 'Breakout' Drawn With Audio On An Oscilloscope - Page 1
Forum section: electronics / general

author: billfernandez
author_rank: Regular Contributor
timestamp: November 09, 2017, 03:18:32 pm
content: Did some searches. Didn't find an existing topic suitable for this post.Here's a video titled "This Circular Version Of 'Breakout' Is Drawn With Audio On An Oscilloscope":http://digg.com/video/plonat-atek-oscilloscope-breakout

author: BrianHG
author_rank: Super Contributor
timestamp: November 10, 2017, 07:16:13 am
content: Wicked....
Adafruit sanding off chip top marking - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: November 10, 2017, 06:04:11 am
content: Jump to 3:20. Why the hell they sand off the top marking of that SC70-6 chip? Isn't Adafruit supposed to be an open source maker?Even if they are trying to protect their IP, everyone knows that must be a level shifter, either an level shifter IC or a dual MOSFET.

author: ataradov
author_rank: Super Contributor
timestamp: November 10, 2017, 06:40:18 am
content: They have schematic posted. It is supposed to be 2N7002D, unless they changed it for some reason.It is just lighting and strange marking. Here is a high res picturehttps://cdn-learn.adafruit.com/assets/assets/000/048/061/original/adafruit_products_3660_iso_ORIG.jpg?1510167364
Are you playing with Deep Learning yet? - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: November 09, 2017, 10:59:59 am
content: Are you using or evaluating Deep Learning? It appears Nvidia has a library out for it.https://www.mathworks.com/discovery/deep-learning.htmlhttps://developer.nvidia.com/deep-learning

author: nidlaX
author_rank: Frequent Contributor
timestamp: November 09, 2017, 03:01:31 pm
content: Quote from: joeqsmith on November 09, 2017, 10:59:59 amMost researchers are not using the CUDA SDKs directly. Rather, they are using one of several different neural network development packages. Lower level tensor manipulation libraries include Tensorflow and Theano, while higher level neural network libraries include Keras and Lasagne.Here's an example of some fun computer vision based research an Nvidia team recently published:http://research.nvidia.com/publication/2017-10_Progressive-Growing-ofThis was developed using Lasagne with a Theano backend.If you want to learn more about neural networks, I highly recommend looking into Stanford's CS231n course. I particularly like the Winter 2016 version that was partly taught by Andrej Karpathy.
Counting and basic math in animals story. - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: November 08, 2017, 02:13:16 pm
content: I found his article while looking for information on math abilities of animals.http://www.bbc.com/earth/story/20150826-the-animals-that-can-countSome of the findings are surprising, especially the finding that virtually all animals can count."We haven't really come across any animals that can't count," says Butterworth. "Yes, we humans can count higher and  more things than animals, but the basic ability to count we share."

author: woody
author_rank: Frequent Contributor
timestamp: November 08, 2017, 02:17:11 pm
content: I bet you only the human animal is able to develop dyscalculia

author: coppice
author_rank: Super Contributor
timestamp: November 08, 2017, 02:27:34 pm
content: They actually find that animals can't count in most cases. They are only good at making relative assessments. They take the case of lions, which seem to tell if one group is bigger than another with ease, but show no sign of being able to assess the actual numbers in the groups. Bird watchers know that most birds can be fooled into thinking a hide is empty, by several people going into the hide and one coming out. Birds react as if their mental process is a simple "People went in, there is danger. People came out, so its safe again". This works with quite large groups entering the hide and only one leaving.

author: jolshefsky
author_rank: Regular Contributor
timestamp: November 08, 2017, 02:35:03 pm
content: As the joke goes ...A biologist and a mathematician are sitting at a cafe, casually observing the building across the street. Two people walk in and three people walk out. The biologist says they must have reproduced. The mathematician says there are exactly -1 people inside the building.

author: cdev
author_rank: Super Contributor
timestamp: November 08, 2017, 08:33:31 pm
content: Which birds can't be fooled by that simple trick?Corvids (the crow family) and parrot species are both often really smart. There are probably other really smart birds.Bowerbirds (from Australia and New Guinea area) are interesting because they create elaborate structures for the purpose of mating in them, that are basically art.And they are very particular about how they look.Crows, like parrots, sometimes become friends with individual human beings.Quote from: coppice on November 08, 2017, 02:27:34 pm
BBC: Why Russia's first attempt at the internet failed - Page 1
Forum section: electronics / general

author: station240
author_rank: Unknown
timestamp: November 11, 2017, 09:14:47 pm
content: http://www.bbc.com/future/story/20171110-why-russias-first-attempt-at-the-internet-failedSome information here also, for those that won't want to watch the above video.https://en.wikipedia.org/wiki/OGAS

author: Zero999
author_rank: Super Contributor
timestamp: November 12, 2017, 07:25:47 pm
content: I wonder if it would have changed history, had it succeeded?

author: Artlav
author_rank: Frequent Contributor
timestamp: November 12, 2017, 08:06:45 pm
content: Quote from: Hero999 on November 12, 2017, 07:25:47 pmProbably not.We had a world-class computer industry up until late 80s, and all of it died in the fires of the collapse of USSR.I suspect any "internet" projects would have went the same way and got swiftly replaced by imported stuff.I met and worked with some of the people who designed the computers back then, and mostly they lament an earlier moment, when the party decided to go along the route of cloning IBM/360 system and killing most of the indigenous designs, in pursuit of standard and binary compatibility with the west.As a consequence of this, the idea to have large computers with a lot of dumb terminals connecting to them from all over the place (think cloud computing -1.0) was replaced with a series of smaller computers used on sites.

author: Canis Dirus Leidy
author_rank: Regular Contributor
timestamp: November 12, 2017, 09:40:38 pm
content: Quote from: Artlav on November 12, 2017, 08:06:45 pmThere also was a dark side: "indigenous designs" were a zoo of incompatible machines (and mostly of them were number crunchers) without system software ("Here's a bare metal ALGOL/FORTRAN compiler (if you lucky) and don't deny yourself anything"). So idea of "get a single family of compatible computers with already existing (just not in USSR) software" did not look so bad with such background. Real problem (IMNSHO) was not a cloning by itself (Tu-4 didn't kill soviet designs bureaus) but atmosphere when you could simply copy and rest on the oars.Quote from: Artlav on November 12, 2017, 08:06:45 pmIt was (IMNSHO again) inevitable. Grosh's law was defeated by Moore's law, so it was cheaper and easier just attach a disk drive to the terminal instead of lying the communication line to every John Dow petty business (in USA) or Sharashmontazh (in USSR).

author: Unknown
author_rank: Unknown
timestamp: November 12, 2017, 09:44:22 pm
content: My understanding, based accounts from a coworker that had escaped from Czechoslovakia in the 80's , that the Soviet 360 clones were extremely unreliable and had very short uptimes.

author: Richard Crowley
author_rank: Super Contributor
timestamp: November 12, 2017, 10:07:50 pm
content: I wish I still had that publicity photo from "Pravda" showing a couple of proud(?) Soviet engineers with a large die-plot of their new 8K SRAM. It still had the "easter egg" little cartoons placed there by the Intel layout people and you could almost see where they removed the Intel logo.
Opinions on USBGuard? - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: November 09, 2017, 02:21:07 am
content: As most of us know, the last few years have seen the emergence of a fair number of exploits against computer hardware that use various ports especially the USB and Firewire subsystems."hubs" USB memory devices, input devices, SATA adaptors, etc.The concept became much more well known when Edward Snowden leaked a trove of NSA documents containing descriptions of NSA USB exploitation hardware.A Linux tool that offers finer grained control over what activities a legacy USB device can and can't do is.https://github.com/dkopecek/usbguard/Think of it as a condom, for computers.What do people think? Are you using it or something like it?
Marco Reps e-bike mod fun (don't watch if triggered by cruelty to small dogs!)  - Page 1
Forum section: electronics / general

author: Cliff Matthews
author_rank: Unknown
timestamp: November 09, 2017, 06:43:33 pm
content: This guy's got a good future on YouTube (dry humor, in a class above ElectroBoom IMHO..) and I had to laugh at the "big shunt resistor" burn marks
Scanner quit on Win7 but still ok on Linux - Page 1
Forum section: electronics / general

author: Circlotron
author_rank: Super Contributor
timestamp: November 07, 2017, 01:15:34 pm
content: 3-1/2 years ago I got a Canon LIDE 210 for myself and an LIDE 110 for my mum. Hers has been working fine up until now. Since the other day though, if you push the "copy" button on the scanner the scanner starts moving and the progress bar only goes partway and then quits and displays an error message about not being able to communicate with the scanner. If I open Control Panel, select the scanner icon and right click "scan" then it does actually scan with the option to save the image. The thing is, it has to be a mum-friendly one-button operation straight to the printer.Tried a new USB cable. Nuh. Removed, downloaded and reinstalled scanner driver and MP Navigator (scanning options dashboard thingy). Still no good. Put my scanner and driver and MP Navigator and all went well. THEN.... I took her scanner home and plugged it into my Linux Mint system and used xsane it worked just fine and dandy! I'm at a loss as to what might have gone wrong with the Win7 system, especially seeing that reinstalling the driver didn't fix it but a slightly different driver and different scanner from the same manufacturer (both from same product family, not very different at all) was okay. Any ideas?
People in Dorset (Bournemouth, Poole & CC area) hackerspace / joint workshop - Page 1
Forum section: electronics / general

author: CM800
author_rank: Frequent Contributor
timestamp: November 07, 2017, 07:57:16 am
content: Hi Guys,I'm curious if anyone else is based around the Bournemouth, Poole and Christchurch area? I know it's a bit of a stretch, not many people down south UK in this industry from what I've seen.I've been long-curious if there are people close enough that would be interested in setting up a hackerspace or joint workshop, heck, even 2-3 people may be enough (al-bit risky if one of them pulls out)Is there anyone down here that feels this would be worth it & interested?Ta!

author: tggzzz
author_rank: Super Contributor
timestamp: November 07, 2017, 09:22:30 am
content: Since you don't bother to say what research you've already done, are these helpful?https://www.makebournemouth.com/https://www.hackspace.org.uk/

author: CM800
author_rank: Frequent Contributor
timestamp: November 07, 2017, 10:16:45 am
content: Quote from: tggzzz on November 07, 2017, 09:22:30 amAround 6 months ago I did a whole load of looking around and had somewhat resided myself to 'eh, there is probibly very few if any people down here into such things'I admit to not searching recently.Make-Bournemouth seems very artsy.Maybe I'll reach out over there and see what's up.
Toying with superconductors.... - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: November 06, 2017, 09:14:33 am
content: Ok, I know we've seen it all before, but it is cool to see just any youtuber do as he pleases with one like float a 3L jar of jam on a magnet ontop of one.....
WaveDrom as a monkey-patch service - Page 1
Forum section: electronics / general

author: MrBoarderino
author_rank: Contributor
timestamp: November 06, 2017, 09:45:56 pm
content: Hi all! A few weeks ago I finished my work on my website that allows one to monkey-patch WaveDrom support (see here:http://wavedrom.com/) from forums like this that do not naturally support them. I really missed this feature in this forum at some point when I was asking something about Microcontrollers and had to export and image awkwardly to show a timing diagram. Maybe somebody finds this useful as well?How to do this:1) Go tohttp://wavedrom.craftware.info/html/index.html2) Enter your WaveDrom timing-diagram script, for example:{signal: [{name: 'clock', wave: 'pppppppp'},{name: '42', wave: '0.10..10'},{},{name: "signal", wave: "1010xxxx"}]}3) Copy link and paste it here, like so:I found this a really useful feature. A bit of self-promotion, but I also would like to see if someone finds this useful, and also if my small server can keep up with the render requests.Cheers,Paul
Do you see ads for "PragerU" on youtube? What is it? - Page 1
Forum section: electronics / general

author: Beamin
author_rank: Super Contributor
timestamp: November 06, 2017, 09:23:35 am
content: Based on pure speculation of it's ads I think it is conservative think group that is spreading an agenda. Specifically the agenda of the corporate right wing of this country masquerading propaganda as news or online education.Reasons I think this:They paint a picture of the alt right not as neo-Nazis but rather as an idea or value you (specifically the average American with a malleable mind) can subscribe to and its like being a libertarian or republican/democrat which it's clearly not.The way they use minorities in their ads to create that "Look a brown person said it can't be racist".They are using "this"(prageru what ever it is) as a delivery vehicle to influence people.A whole bunch of other shit I forgot but will remember when I see it again. The style of ads remind me of those "VOTE NO ON #37 NO CASINOS FOR OUR COUNTY'S SCHOOL ZONES" Then you find out the company that is making the ads is owned by an existing casino who would suffer huge loss of business if the new casino is built. Some times though its not as easy as reading the "paid for by the blablafreedom association of patriotism" and doing a google search of that company.This thread is NOT to discuss politics I'm curious as to what countries see this: or rather what IP addresses and browsing history is selected to see these ads. I had time to get an extra degree it would be in this subject. Fascinating how the collective minds are influenced.The psychology of propaganda/advertisement is always fascinating to me how they come with cleaver and sometimes not so cleaver ways to trick people.

author: EEVblog
author_rank: Unknown
timestamp: November 06, 2017, 09:39:47 am
content: Nope, it will turn political, I'm locking this thread before that happens.
Digital Document Management - How do you do it? Software recommendations? - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: November 06, 2017, 09:17:59 am
content: I'm interested in hearing about how you guys manage your "collection" of documents as I'm looking at implementing some kind of system at home. At work I use HP TRIM, but it's not something I'm going to set up at home, not to mention it's over-kill.Basically, I need an easy way to search and categorise documents of various formats (the format itself shouldn't matter as I simply need a link to the physical file, rather than have the software manipulate or otherwise interact with the file itself (OCR etc...).Simply relying on folder/file names isn't really ideal and there is no "one size fits all" approach to naming conventions as different types of documents might call for different elements in the file name. Almost all my files start off with the date, then generally a reference to the company/institution and a few words about what the document contains.But take something like a bank statement. It might be called20171106 - MyBank - Statement - Period ending 20170630.pdfbut that convention obviously doesn't work with something like a set of plans, an invoice, correspondence. Long path names aren't ideal either due to the Windows path character limit.Ideally the file should be assigned a unique document ID so that if the file were by itself, the name would still be meaningful rather than only relying on folder names for organisational purposes.
Nice Tektronix TPS2024 on eBay - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: October 25, 2017, 03:29:34 am
content: https://www.ebay.com/itm/Tektronix-TPS2024-Digital-Oscilloscope/112589690563?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D41375%26meid%3D95d3fb1b960f495387f1c73dec2292c5%26pid%3D100033%26rk%3D2%26rkt%3D8%26sd%3D112589690563&_trksid=p2045573.c100033.m2042

author: daqq
author_rank: Super Contributor
timestamp: October 25, 2017, 04:42:09 am
content: And there we have it. The new definition of "Beyond economical repair".

author: JPortici
author_rank: Super Contributor
timestamp: October 25, 2017, 06:12:00 am
content: shit! I wonder if he can just sell me the feets.. i was quoted absurd numbers for those

author: kulla
author_rank: Unknown
timestamp: October 25, 2017, 06:15:58 am
content: Why not just print them on 3d printer? Nothing so special with them or?

author: bd139
author_rank: Super Contributor
timestamp: October 25, 2017, 08:07:23 am
content: $400 lol

author: JoeO
author_rank: Frequent Contributor
timestamp: October 25, 2017, 01:39:19 pm
content: Too bad I can't "Make an Offer".

author: GreyWoolfe
author_rank: Unknown
timestamp: October 25, 2017, 07:49:22 pm
content: Quote from: JoeO on October 25, 2017, 01:39:19 pmMy offer would be that he pays me to take it, then I can give the feet to JPortici.

author: buck converter
author_rank: Regular Contributor
timestamp: October 25, 2017, 08:13:25 pm
content: either buy&hack a Rigol DS1054Z or repair a Tektronix TPS2024 and get a scope with twice the specs, for the same price!

author: glarsson
author_rank: Frequent Contributor
timestamp: October 25, 2017, 08:29:14 pm
content: Red paint on stickers on top and back.Knobs for rotary controls removed before red paint.I get the impression that this scope was never intended to be on the market again.Does Tektronix use the same methods as Gibson Guitars, i.e. order dealers to destroy products replaced under warranty before throwing them in the trash?

author: Old Don
author_rank: Regular Contributor
timestamp: October 27, 2017, 01:53:25 pm
content: That should clean up nicely.

author: Cubdriver
author_rank: Unknown
timestamp: October 30, 2017, 01:09:04 am
content: That'll buff right out...-Pat

author: iampoor
author_rank: Frequent Contributor
timestamp: November 05, 2017, 06:06:55 pm
content: It apparently sold for 300$

author: Cubdriver
author_rank: Unknown
timestamp: November 05, 2017, 08:01:18 pm
content: Quote from: iampoor on November 05, 2017, 06:06:55 pmWell, as the old saying goes, there's a sucker born every minute. I hope for the sake of whoever bought it that the inside is in better condition than the outside!-Pat
What to do with a pair of VXC0  2.048MHz - Page 1
Forum section: electronics / general

author: johnh
author_rank: Regular Contributor
timestamp: November 04, 2017, 08:35:15 pm
content: Was given these crystal oscillators by an old work colleague.Can't find any reference with google.Looking at the date codes on ic's,on some other boards they range from 77-83

author: German_EE
author_rank: Super Contributor
timestamp: November 05, 2017, 10:26:06 am
content: Divide by 2048 (an easy power of two) to get a stable 1 KHz reference, use this to phase lock a 10 MHz oscillator for a lab frequency standard.or.....divide by 2048 then by 1000 to get a 1 pps signal and have an accurate clock in the lab.

author: Cerebus
author_rank: Super Contributor
timestamp: November 05, 2017, 10:39:07 am
content: What leads you to believe they are VCXO, i.e. voltage controlled? Judging from their size there is a goodly chance that they are OCXO, i.e. oven controlled and, as Dave would say, "Schmick". (Not that oven controlled precludes them from being voltage controlled as well.)

author: glarsson
author_rank: Frequent Contributor
timestamp: November 05, 2017, 10:46:11 am
content: First picture, below the heatsink the PCB has the text VCXO. A little big for a "simple" VCXO, but that's what it says.

author: SeanB
author_rank: Super Contributor
timestamp: November 05, 2017, 04:56:46 pm
content: Likely were plug in reference oscillators. the ECL logic used might be a little odd to interface to, but you could always think of the entire unit as being a PECL logic element and drive TTL that way, and then use a divider to get the 1kHz output from it.
What does your work space look like? - Page 1
Forum section: electronics / general

author: mrcrud5
author_rank: Contributor
timestamp: November 04, 2017, 12:53:38 am
content: I'd like to see your work space! I posted a video on mine. How do you guys have yours set up? Is your computer on the same desk you solder on? Do you have a "clean desk" and a "rough desk" like I do?https://www.mrelectronics.net/single-post/2017/11/02/Tour-of-my-Home-office

author: sycho123321
author_rank: Regular Contributor
timestamp: November 04, 2017, 12:55:37 am
content: See this thread:https://www.eevblog.com/forum/chat/whats-your-work-benchlab-look-like-post-some-pictures-of-your-lab/
OT humor movie clip from "Top Secret" - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: November 02, 2017, 03:19:19 pm
content: This movie is a classic. From the same guys that did Airplane!

author: T3sl4co1l
author_rank: Super Contributor
timestamp: November 02, 2017, 08:08:22 pm
content: Brings to mind...When people are really mad at you for silly reasons,Tim
Jeri Ellsworth - new series of videos on Youtube - Page 1
Forum section: electronics / general

author: alanb
author_rank: Frequent Contributor
timestamp: November 01, 2017, 11:21:44 am
content: Jeri has started a new series that will be of interest to ham radio enthusiastshttps://youtu.be/Al3ZJipFq6k

author: cdev
author_rank: Super Contributor
timestamp: November 02, 2017, 11:54:03 am
content: Very good! A dual loop design that is also nice looking - enough to not be objectionable to neighbors.
Hi-BS - Page 1
Forum section: electronics / general

author: T3sl4co1l
author_rank: Super Contributor
timestamp: November 01, 2017, 11:54:12 pm
content: https://na.industrial.panasonic.com/products/resistors-inductors/inductors-coils/power-choke-coilsHi-BS inductors!Tim

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: November 02, 2017, 12:14:44 am
content: Even worse: in Quebec "BS" is a pejorative way to refer to people on Welfare...

author: TerraHertz
author_rank: Super Contributor
timestamp: November 02, 2017, 02:58:46 am
content: There doesn't seem to be anything in their datasheets to support this hi-BS claim. So it must be true.

author: Mr.B
author_rank: Unknown
timestamp: November 02, 2017, 03:05:12 am
content: Now I need to buy some.So I can sell them to the audiophools...Advertising byline:For just USD 1,250 your home audio can exhibit 'Hi-BS' like you have never turned your golden ears to before.