hybridfree/eevblog-posts huggingface dataset:
My customer is driving me crazy with the enclosure design - Page 1
Forum section: electronics / general

author: benjius
author_rank: Contributor
timestamp: April 20, 2011, 09:50:17 am
content: Hi all,I recently started to work in project with a customer overseas, I'm trilled about this project and I want to do my best because it's a huge project and it's very good money for my, I actually quited my daily job at to work full time in this project.Well things didn't exactly turn out to be so good, so I'm back to the office, anyways the project is still going put at slow pace.The think is that we've spent the last few months working on the enclosure design and board connectors to the outside world instead of working in the electronics and MCU programming which is what I love about this job.Although my customer knows my knowledge about enclosure design is quite limited. But he continues to ask for my advice, and I feel a great deal of pressure because the enclosure design is going to limit my PCB layout because I've to think how to fix the pcb board to the enclosure, and all sorts of things like LED position and so on...I invite everyone to give me your ideas and share your experience in this area.I’m still inside the woods, any advice is welcome !Regards.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 20, 2011, 10:19:13 am
content: That usually is the right way to go about it - the enclosure will generally dictate the PCB size/shape, so you need to nail that down before you can do the PCB, but you obviously need to have a rough idea of how much space you need.
Magnetic Properties of Graphene Discovered - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 17, 2011, 01:36:27 am
content: interesting resultshttp://www.sciencedaily.com/releases/2011/04/110414091110.htm

author: Lawsen
author_rank: Frequent Contributor
timestamp: April 17, 2011, 05:32:13 am
content: I am no expert. Matter that exhibits magnetism tends to be paramagnetic, ferromagnetic with unpaired electronics. Matter that exhibits, have characteristics of diamagnetic without unpaired electrons. That story shows physicist Paul Marrow is able to make magnetic material in three dimension in a nano scale. It is too early to have store bought products with this method.http://www.eng.rpi.edu/lemelson/finalist_Morrow.cfmhttp://www.ndt-ed.org/EducationResources/CommunityCollege/MagParticle/Physics/MagneticMatls.htm-ene is usually associated with alkenes, double bonds molecules.We might see terrabyte I Pod Classics in the future with these cobalt magnet; para and non magnetic copper; dia, non magnetic layers drive. It is an interesting topic, million songs!!!Lawsen
The Periodic Table of Videos. - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: April 15, 2011, 09:26:03 pm
content: Few days ago I came across the following web site. I found it really interesting (I also refreshed my Chemistry knowledges). I thought that it will be interesting for other engineers too. So...http://www.periodicvideos.com/

author: dimlow
author_rank: Frequent Contributor
timestamp: April 15, 2011, 11:24:26 pm
content: OMG, watched the hydrogen video and the guy with the fuzzy hair almost sent me to sleep
NIST is looking for your help in identifying current shunts - Page 1
Forum section: electronics / general

author: janekm
author_rank: Unknown
timestamp: April 14, 2011, 04:36:41 pm
content: NIST are apparently having some trouble identifying old variable current shunts:http://nistdigitalarchives.contentdm.oclc.org/. (Square Wood-Framed Instrument with Two Dials, Instrument with Eight Dials Set in Wooden Frame, Resistance Box (x2), Wooden box with multiple terminals and dials all look like such to me, much like the uCurrent).Evidence:"Int Ohm" = "International Ohm", unit of measurement of resistance before adoption of SI."Manganin" = alloy with virtually zero temperature coefficient of resistance value."Stromstärke in Ampere" = Current in Ampere.http://www.testequip.com/sale/details/HES2500.htmlAnother precision resistor from the same company.I'm sure Dave or others on this forum could explain to them what those are...

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: April 15, 2011, 11:44:57 am
content: Does anybody else here pronounce "NIST" as "NBS"? I know, I'm showing my age
OSS Beats MS kinect  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 14, 2011, 07:12:57 pm
content: i have had a play and its awesome

author: sacherjj
author_rank: Frequent Contributor
timestamp: April 14, 2011, 08:28:08 pm
content: Awesome on a technological level.Scary on a "big brother" level.
6KV Can Crusher  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 11, 2011, 11:59:26 pm
content: sporting a 30 uF cap at 6 KV he recycled from a Defibrillator

author: Unknown
author_rank: Unknown
timestamp: April 12, 2011, 01:06:40 am
content: Shows how little energy is really stored in capacitorscompared with batteries, generators and ofc mains.PS I would hate to be a Coke can in this world. :-p

author: Time
author_rank: Frequent Contributor
timestamp: April 12, 2011, 02:00:18 am
content: its the power thats impressive

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 12, 2011, 08:57:52 am
content: Amazing how fast the can moves when you do this - here's mydestruct-o-troncrushing a can at 1000frames/second.

author: gxti
author_rank: Frequent Contributor
timestamp: April 12, 2011, 07:55:48 pm
content: The mechanical one isn't nearly as impressive, aside from all that delightful humming and buzzing it makes while it runs. You can easily crush a can by hand with only a little leverage, but the most practical way to crush would be to gently squeeze the sides, thus compromising the compressive strength of the can. You could easily use 1/10th the energy of what that device is using, but I guess that would be missing the point.
Late April fool's opamp - Page 1
Forum section: electronics / general

author: Hypernova
author_rank: Unknown
timestamp: April 10, 2011, 08:02:46 am
content: Quotehttp://www.senatus-autem.it/media/papers/LM0901A1411090451C.PDF

author: tnt
author_rank: Regular Contributor
timestamp: April 10, 2011, 09:30:11 am
content: Given the part has been published in March 1878, I think it was a great op amp for the time

author: Polossatik
author_rank: Frequent Contributor
timestamp: April 10, 2011, 11:02:18 am
content: Quoteand say'ing I've been looking foryearsfor part like this...
Replacing the glossy screen of my laptop with a matte screen - Page 1
Forum section: electronics / general

author: mondalaci
author_rank: Contributor
timestamp: April 04, 2011, 05:40:20 pm
content: Hi guys,I have an Acer Aspire 8935G-874G100BN laptop featuring a 18.4'' glossy display. I truly dislike reflection and wanna replace the screen with a matte one. Do you have any ideas where to get one?On a related note, I'm curious about compatibility issues. My next laptop will probably be a next generation Acer Aspire with the same screen size. Matte probably won't be an option. I'd like to use my future matte display for my next laptop but don't know about hardware interfaces and compatibility issues. If anyone could shed some light on this that would be highly appreciated.Thanks,Laci

author: FreeThinker
author_rank: Frequent Contributor
timestamp: April 04, 2011, 06:17:58 pm
content: I don't think changing the screen is an option. Have you considered anti reflective film?http://solutions.3m.com/wps/portal/3M/en_US/Vikuiti1/BrandProducts/main/productliterature/productinformation/?PC_7_RJH9U5230GE3E02LECFTDQ8KB7_nid=RW0ZMH842Pbe0H01CMQK62gl

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 04, 2011, 06:19:26 pm
content: yes change the polarizing film

author: Zero999
author_rank: Super Contributor
timestamp: April 04, 2011, 09:39:57 pm
content: Quote from: Sionyn on April 04, 2011, 06:19:26 pmI don't think he was suggesting that. I thought he meant stick the matt film on top.

author: mondalaci
author_rank: Contributor
timestamp: April 05, 2011, 12:07:36 am
content: Quote from: Hero999 on April 04, 2011, 09:39:57 pmYeah, I was also assuming sticking the film on top which is what makes sense. Changing the polarizing film is an interesting idea though, not that I think it's possible.

author: mondalaci
author_rank: Contributor
timestamp: April 05, 2011, 12:10:12 am
content: BTW, what do you think about that?http://www.247laptoplcd.com/servlet/the-76850/ACER-LK.18406.001-LAPTOP-LCD/DetailThere are a number of such offerings on the net.

author: Zero999
author_rank: Super Contributor
timestamp: April 05, 2011, 05:36:08 pm
content: It's much easier/cheaper just to stick some film over the top of the existing display.

author: mondalaci
author_rank: Contributor
timestamp: April 09, 2011, 04:01:33 pm
content: Quote from: Hero999 on April 05, 2011, 05:36:08 pmLike I have suggested earlier, I'm not interested in getting something easier or cheaper. I'm interested about quality and so far nobody could tell me the difference between a matte screen and a glossy screen with a matte film on top of it.

author: Zero999
author_rank: Super Contributor
timestamp: April 09, 2011, 04:15:20 pm
content: I don't know what it'll be like, give it a go and if you're not happy, it's cheap so you've not lost much.
Genius counterfeit computer! - Page 1
Forum section: electronics / general

author: Hypernova
author_rank: Unknown
timestamp: April 08, 2011, 02:45:07 pm
content: Came across this post on a chinese forum:http://bbs.ylmf.net/forum.php?mod=viewthread&tid=1872738&extra=%26page%3D1&page=1The OP's friend that probably worked in a repair shop sent him the following:-A guy brought it in claiming it's broke.-After finding that it was extremely sluggish despite the sticker on the back saying it was a Lenovo with E8400 and 2GB ram.-They open it up to find that it's actually a P3 celeron 1.3GHz with 128MB...-And since there was also supposed to be a GF9600GT gfx card guess how they faked that!At least that case was new, no pics were posted but it also POST's with a Lenovo logo so that part is right.

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: April 08, 2011, 04:53:49 pm
content: Heh, clever.

author: Simon
author_rank: Unknown
timestamp: April 08, 2011, 05:21:29 pm
content: and people claim we should trust the chinese ? hahahahaha (no offence intended to nice chinese people - terms and conditions apply)

author: Zero999
author_rank: Super Contributor
timestamp: April 08, 2011, 05:40:24 pm
content: Either the person who bought it doesn't know how to use a computer or they hacked the OS or the BIOS so it displays the fraudulent spec's.

author: Simon
author_rank: Unknown
timestamp: April 08, 2011, 05:42:58 pm
content: sounds like the buyer was clueless

author: Zero999
author_rank: Super Contributor
timestamp: April 08, 2011, 05:47:37 pm
content: Yes, they're still clueless, scanning for viruses and updating the BOIS firmware would reveal any hacks and anyone who knows what they're doing would do that if they noticed shitty performance from their new PC.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 08, 2011, 06:01:29 pm
content: Just saw this.... USB flash drive + nuts = 500GB drive...http://blog.jitbit.com/2011/04/chinese-magic-drive.html

author: Simon
author_rank: Unknown
timestamp: April 08, 2011, 06:21:58 pm
content: Quote from: Simon on April 08, 2011, 05:21:29 pmand I say it again !

author: Lance
author_rank: Frequent Contributor
timestamp: April 09, 2011, 01:24:57 am
content: Gotta give credit to whoever did that. It's smart in a nasty way.

author: Simon
author_rank: Unknown
timestamp: April 09, 2011, 06:43:55 am
content: smart yes, cruel yes, very
555 Timer - Page 1
Forum section: electronics / general

author: FreeThinker
author_rank: Frequent Contributor
timestamp: April 08, 2011, 02:09:31 pm
content: Does anyone remember the circuit for the Apple][? I seem to recall the mighty WOZ (all hail the mighty woz) used a 555 timer for the ADC on the mother board, this was where the paddles connected and we utilised the port as a data logger to monitor temp on a large format photo copier. I know the 555 can be used in this way but have log since lost my apple ][ manuals and cannot find any reference to it but i'm sure it's the case. Any one confirm?

author: insurgent
author_rank: Regular Contributor
timestamp: April 08, 2011, 03:00:41 pm
content: You are correct.I also remember using the cassette port to digitize audio (30 seconds or so of AC/DC's Back in Black !)Here's a great write up on the game paddle system:http://www.atarimagazines.com/compute/issue26/150_1_APPLE_GAME_PADDLES.php

author: FreeThinker
author_rank: Frequent Contributor
timestamp: April 08, 2011, 03:25:40 pm
content: Ah! Thanks for that, the 555 timer competition stirred up old memory's but the details were foggy. Didn't have a true apple][ myself, just a Chinese clone affectionately known as a crapple. Build quality was very good and the documentation was exactly as apples. Went to the skip years ago but was perfectly functional just not used for a while.... what a waste!
Remote Access Software - Page 1
Forum section: electronics / general

author: semaphore
author_rank: Contributor
timestamp: April 08, 2011, 04:45:21 am
content: I need a good and secure Remote Access Software for my home desktop. This is so I can access it from anywhere with the internet. I don’t mind paying a little money. Anyone have any recommendation? Oh... it is for Windows machine.

author: alvarop
author_rank: Contributor
timestamp: April 08, 2011, 08:13:58 am
content: I hear great things abouthttp://www.gotomypc.com/On the free side:http://www.tightvnc.com/should work ok. Also, windows' built in remote desktop works quite well on Windows 7 at least.
Fluke/Hantek/Owon scopemeter rebrads/ripoffs - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: April 05, 2011, 06:57:27 pm
content: The OWON HDS1022M became the OMC-22The Hantek DSO1200 became the AKIP 4132 2And finally, the Fluke 123 became the OMC-20"Rechargeable battery ensures 'something' operation of the device for at least 1 hour"Who is complaining about the battery life of their Fluke 233/289?Imagine what the future holds for the new Velleman HPS140 DSO.

author: Mambo
author_rank: Contributor
timestamp: April 08, 2011, 05:46:37 am
content: lol....a battery powered oscilloscope with exposed metal probes.....very safe
Learn electronics with play-dough! - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 04, 2011, 10:50:45 pm
content: http://www.ted.com/talks/annmarie_thomas_squishy_circuits.html

author: Zad
author_rank: Super Contributor
timestamp: April 04, 2011, 11:53:48 pm
content: Posted before:https://www.eevblog.com/forum/index.php?topic=3025.0

author: Zero999
author_rank: Super Contributor
timestamp: April 05, 2011, 05:55:37 pm
content: I didn't know it was that conductive and was surprised there was enough current to power a small motor.I assume she used LEDs with a built-in series resistor.I wonder if there are any problems with electrolysis causing corrosion, chlorine gas emissions and the dough turning caustic after awhile? If that's a problem AC could be used (from a sealed transformer of course) or the recipe could be changed so it's chlorine free, it needs to be non-toxic of course, maybe use sugar dough with graphite powder.

author: Zad
author_rank: Super Contributor
timestamp: April 05, 2011, 06:14:26 pm
content: Seems to me that it would be infinitely easier to use wires. She keeps talking about small hands, well from what I remember as a kid, it was easier then for me to manipulate components and wires than it is now! It seems to be one of those YouTube "hey cool, but so what?" kinda things.

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 05, 2011, 06:30:17 pm
content: really anything can conduct electricity with enough emf just lies in its distance between the valance and conduction band so ok maybe not everything oh and electrical break down is not really conductance.here something for kicks (not the only thing he can't do, de-interlace his video either)MIT Physics Demo -- Conducting Glass

author: Zero999
author_rank: Super Contributor
timestamp: April 06, 2011, 04:41:16 pm
content: It's just melting the glass allowed the ions to move. The same thing will happen if you freeze salt water, it will stop conducting as the ions can't move and start conducting again when it melts.Quote

author: Ferroto
author_rank: Frequent Contributor
timestamp: April 07, 2011, 10:27:37 am
content: bah when I was 12 my old man showed me the correct soldering technique. No need for play-dough

author: Simon
author_rank: Unknown
timestamp: April 07, 2011, 11:40:17 am
content: whatever next !
Combustion Engine 3.0 (disk generator) - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 09, 2011, 03:08:23 pm
content: claims x3 more efficient they hope to have a 25KW version in two years to drive chelsea tractor

author: Unknown
author_rank: Unknown
timestamp: April 09, 2011, 03:15:47 pm
content: Maybe in 3 years he will tell us how it works also.

author: Zad
author_rank: Super Contributor
timestamp: April 09, 2011, 04:09:17 pm
content: I watched that yesterday, and looked at the Wiki page and saw another video. It just doesn't add up, it has the feel of those perpetual motion machines where they don't show you anywhere near enough to understand precisely how it works. Right now it seems to be smoke and mirrors that exist purely to get research grants.

author: Zero999
author_rank: Super Contributor
timestamp: April 09, 2011, 05:56:59 pm
content: Yes it seems like they're claiming to violate the law of thermodynamics.An efficient rotary combustion engine already exists: it's called a turbine. The trouble is, it's only efficient at one speed which is why it'll only be good in a hybrid.It's also theoretically possible to squeeze more efficiency out of a standard internal combustion engine which is already hot enough to drive another thermal cycle. For example people complain about air conditioning costing extra fuel but it's possible to power it from the waste heat from the engine.

author: dmlandrum
author_rank: Regular Contributor
timestamp: April 09, 2011, 06:01:19 pm
content: Until they show me the internals, the math models, and the process used to arrive at this design, my tendency is to automatically call bullshit. That might sound cynical, but truly, I would love to be proven wrong. Key word: proven. Beyond the shadow of a doubt.

author: buffalo960
author_rank: Contributor
timestamp: April 09, 2011, 07:31:45 pm
content: Do they have a video of this thing actually in operation?vids or it didnt happen

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 09, 2011, 08:38:58 pm
content: indeed i was think on the lines of junk science

author: jnissen
author_rank: Regular Contributor
timestamp: April 11, 2011, 10:59:08 pm
content: Quote from: Hero999 on April 09, 2011, 05:56:59 pmTurbines are not all that efficient! Here is my sons DIY turbine.
The End of The Standard Model Seem So - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 07, 2011, 12:35:36 pm
content: fermi lab results points to new understanding and a end to the standard modelhttp://xxx.lanl.gov/pdf/1104.0699

author: Hypernova
author_rank: Unknown
timestamp: April 07, 2011, 01:07:33 pm
content: That is one loooooong list of authors

author: Excavatoree
author_rank: Frequent Contributor
timestamp: April 07, 2011, 05:46:43 pm
content: Cliff's notes?
Just some pics inside UNI-T 2025B scope. - Page 1
Forum section: electronics / general

author: discomike
author_rank: Contributor
timestamp: June 03, 2010, 12:04:32 am
content: I got it 2-3 years ago, and it was among the cheapest dso-scopes around, like $300. I got the monochrome version since color was a huge price premium. It claims 25MHz bandwidth, 250MS/s. The cheapest version lacks front panel usb, but there are some traces going to the port inside, so i might try something out some day..http://int10h.net/ut2025b/front.jpghttp://int10h.net/ut2025b/back_shielding_removed.jpghttp://int10h.net/ut2025b/power_board.jpghttp://int10h.net/ut2025b/cpu_flash_ram_8051.jpghttp://int10h.net/ut2025b/fpga_ad.jpghttp://int10h.net/ut2025b/input.jpghttp://int10h.net/ut2025b/trigger_and_inputs.jpgChips inside:Cypress CY7C68013A-56PVXC EZ-USB FX2LP, 8051 micro with USB24lc64, 64Kbit EEPROM, contains program for the 8051.Analog Devices ADSP-BF531, Blackfin CPU.STM 32Mbit flashHynix 128Mbit SDRAM, 133MHzAltera Cyclone EP1C6Q240C8N, 6k-gate FPGA2x ISSI IS62WV1288BLL-55HLT, 1Mbit SRAM2x Analog Devices AD9481 BSUZ-250, 250MS/s AD-convertersfeel free to comment =)

author: safarir
author_rank: Regular Contributor
timestamp: June 03, 2010, 01:01:51 am
content: It look very very similar to the rigol...

author: Ronnie
author_rank: Regular Contributor
timestamp: April 06, 2011, 07:05:05 am
content: @discomike,The links are broken can you attached the pictures instead?

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 06, 2011, 02:16:28 pm
content: this is the problem with links to external non stable site (or online storage if i may call it).
chemistry a volatile history - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 02, 2011, 09:56:01 pm
content: so chemistry a volatile most notable is the story of alchemists looking for gold in human body he figured since urine was yellowish he start there so he went and boiled it ending with a very smelly house.EnjoyDiscovering The ElementsThe Order of ElementsThe Power Of The Elements

author: Polossatik
author_rank: Frequent Contributor
timestamp: April 05, 2011, 10:49:03 am
content: very nice series, I can recommend it also.(also available on usenet by the way)
Dummie question about picopsu :-) - Page 1
Forum section: electronics / general

author: dds
author_rank: Contributor
timestamp: April 08, 2011, 11:50:29 am
content: Hi,I have sunfire v210 blade server which has power supply of 320 watts, and the question is: could I use a picopsu 160w as fanless power supply? I think sunfire v210 is pretty noisy..Thanks!
Can someone tell the different between u1253A and u1253B? - Page 1
Forum section: electronics / general

author: Aido4ever
author_rank: Contributor
timestamp: April 04, 2011, 05:38:09 pm
content: What the A/B Stand for?I noticed that every model of Agilent has an A and B version and the only different i see is the color!!!

author: insurgent
author_rank: Regular Contributor
timestamp: April 04, 2011, 08:23:20 pm
content: Other than the color (I don't know if the skins for the B fit the A), the differences are very slight.There are slight differences in the AC voltage & AC + DC vs frequency accuracy specs and the input impedance specs. To my little-trained eyes the specs seem a little better on the A model except for the input impedance in dual display mode.Here's a spec sheet with all the gory details:http://cp.literature.agilent.com/litweb/pdf/5989-5509EN.pdf

author: implor
author_rank: Regular Contributor
timestamp: April 05, 2011, 07:16:31 am
content: Correct me if i'm wrong but isn't the B-series a revision/renewal of the older A-series? about the same specs but with newer modern tec?

author: mkissin
author_rank: Regular Contributor
timestamp: April 05, 2011, 08:35:51 am
content: Looking at that PDF, the A series does indeed seem to beveryslightly better, but only if you need a 1GR input impedance at voltages less than 1V (as opposed to 10MR), and only if you spend a lot of time measuring AC voltages at greater than 20kHz.
Squishy Circuits - Page 1
Forum section: electronics / general

author: alvarop
author_rank: Contributor
timestamp: April 04, 2011, 04:34:54 pm
content: I just saw this TED video of teaching circuits to children with play dough. Seems like a neat idea.http://www.ted.com/talks/annmarie_thomas_squishy_circuits.htmlAnd the actual site:http://courseweb.stthomas.edu/apthomas/SquishyCircuits/index.htm
What to do with CRT VGA monitors - Page 1
Forum section: electronics / general

author: deephaven
author_rank: Frequent Contributor
timestamp: March 31, 2011, 12:54:19 pm
content: We have recently updated most of our computer monitors to LCD. This means we have a pile of perfectly good CRT monitors sitting in the corner. It seems a shame to just scrap them, but what else can we do with them?I have an idea for one of them, robbing its EHT transformer and making a calibrated HV generator for ESD tests.

author: comox
author_rank: Regular Contributor
timestamp: March 31, 2011, 01:02:53 pm
content: A couple years back I gave a 21" Nanao FX2-21 monitor to the Salvation Army. Cost me over $3000USD new. Damn it was heavy!

author: Polossatik
author_rank: Frequent Contributor
timestamp: March 31, 2011, 01:55:15 pm
content: Check if they will blend?

author: dimlow
author_rank: Frequent Contributor
timestamp: March 31, 2011, 07:11:17 pm
content: Create some retro art forms

author: GeoffS
author_rank: Unknown
timestamp: March 31, 2011, 07:15:28 pm
content: I doubt you'll get anyone to take them off your hands. I regularly see monitors at the kerb awaiting rubbish collection.I have a 76cm CRT TV I've been trying to give away but can't find any takers. It's too heavy to put out for rubbish collection

author: dimlow
author_rank: Frequent Contributor
timestamp: March 31, 2011, 07:22:31 pm
content: On a serious note, here in the UK we have something called freecycle where people post onto a forum what they have to give away. Then its up to others to come and collect. I have used this service to get some free furnitureBut also i have given away my old crt's and a bunch of old electronic test equipment. There is always someone that has a need for this stuff, some less fornate soles will be glad to take a CTR off you.

author: deephaven
author_rank: Frequent Contributor
timestamp: March 31, 2011, 09:40:03 pm
content: Quote from: dimlow on March 31, 2011, 07:22:31 pmThat's an idea, I'll give that a try, thanks.

author: kek
author_rank: Regular Contributor
timestamp: March 31, 2011, 10:29:34 pm
content: Use it as a high quality display for a microcontroller project. I found that it's not too hard to generate vertical bar graphs with an 8-bit PIC.

author: House91320
author_rank: Regular Contributor
timestamp: March 31, 2011, 10:54:25 pm
content: diy oscilloscope

author: Strube09
author_rank: Regular Contributor
timestamp: April 01, 2011, 01:16:15 am
content: hmmm... Anger managment... Office space style!

author: Frangible
author_rank: Regular Contributor
timestamp: April 01, 2011, 05:03:18 pm
content: Trebuchet and shotgun?

author: Sal Ammoniac
author_rank: Super Contributor
timestamp: April 01, 2011, 05:14:53 pm
content: Dropping off a roof is great fun (as long as someone else cleans up the mess.)

author: Ronnie
author_rank: Regular Contributor
timestamp: April 04, 2011, 06:18:17 am
content: Just like what Bob Pease (former staff scientist of National) did on his computer see Figure 12.1 page 145 Troubleshooting Analog Circuits ISBN 0-7506-9949-8
Sugar The Bitter Truth  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 02, 2011, 07:05:19 pm
content: dave has mentioned his diet and to reduces his expose to chemicals contained in food.so i though dave and eev guys might like this quiet a eye opener

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: April 03, 2011, 04:33:20 am
content: Wow 1hour + 30 min , But it is enjoyable .I am close to 42 of age , and recently find out that I have sugar in my blood,and so the subject of this video instantly ring a bell to me.And so I watch it all , and it was easy to understand, the most of it,most medical terms comes from the Greek language, and this makes things more easy.I will agree with this theory, and I had adjust all ready my food as he suggests too.Thanks for the link.An truly worthy video.

author: TheWelly888
author_rank: Frequent Contributor
timestamp: April 03, 2011, 01:46:37 pm
content: My father has been diagnosed with Type 2 diabetes a few years ago but he keeps it under control solely by controlling the amount of carbohydrates he eats but it's a case of locking the stable door after the horse has bolted ie he will never be cured of it.I now avoid fizzy drinks and candy bars like the plague.

author: Unknown
author_rank: Unknown
timestamp: April 03, 2011, 04:12:54 pm
content: Moderation, moderation, moderation.
Last minute april fool's - Page 1
Forum section: electronics / general

author: allanw
author_rank: Frequent Contributor
timestamp: April 02, 2011, 03:58:42 am
content: Elicited a few chuckles from me:http://desperate-engineers.com/files/2010/08/NS_polish_amplifier.pdf

author: Psi
author_rank: Super Contributor
timestamp: April 02, 2011, 05:20:05 am
content: hehe, quite well done

author: Simon
author_rank: Unknown
timestamp: April 02, 2011, 08:41:49 am
content: Fascinating

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 02, 2011, 09:12:37 am
content: On a similar note, but a bit better done :Write-only memory

author: Simon
author_rank: Unknown
timestamp: April 02, 2011, 10:56:31 am
content: that's hilarious

author: johnboxall
author_rank: Unknown
timestamp: April 02, 2011, 11:12:12 am
content: Sparkfun had a soldering iron kit:http://www.sparkfun.com/products/10624

author: Simon
author_rank: Unknown
timestamp: April 02, 2011, 11:19:45 am
content: oh that's so funny, I wonder how many people tried to order it

author: saturation
author_rank: Super Contributor
timestamp: April 02, 2011, 11:53:59 am
content: A classic:http://en.wikipedia.org/wiki/Turboencabulator
RSS feed - No longer able to watch video in a popout window - Page 1
Forum section: electronics / general

author: jone
author_rank: Contributor
timestamp: April 02, 2011, 08:08:11 am
content: Hi Dave,It seems recent posts no longer have a "popout" option for the video when read from the RSS feed (Google Reader). The last one I can see with this link was the "Wireless Power Transfer & Transformer Tutorial".Any chance you could reinstate that? Was super useful (to me at least!)..Thanks,Jon
ATOM  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 29, 2011, 08:44:43 pm
content: illusion of realitykey to the cosmosclash of the titansenjoy

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: March 30, 2011, 05:07:34 am
content: I am yet to see a documentary about quantum mechanics which doesn't show the presenter's clone and that doesn't imply the existence of sci-fi style parallel universes. "The Elegant Universe" is the worst when it comes to that sort of thing.I thought I'd get to the bottom of it by watching a few lectures on quantum mechanics, but I quickly realized it's all just maths. As much as I'd love to understand quantum mechanics, quantum entanglement and even the string theory on a conceptual level, I don't think that can be found in these documentaries. They're still kind of interesting to watch though.

author: TheEENerd
author_rank: Contributor
timestamp: March 30, 2011, 05:21:09 am
content: Watched 2 years ago. Still love it!

author: saturation
author_rank: Super Contributor
timestamp: March 30, 2011, 11:52:56 am
content: Great shows! Never saw them here in the USA. Something to fill quiet time.

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 30, 2011, 06:09:54 pm
content: well, i have a lot to do. but the documentary made my time quiet! great show, but...i dont know how to explain it. but, i think scientist will never made it, or maybe found out bizzare rules.if taken seriously, it can translate that i'm an insignificant creature, of what i think and do.as i recall from the 4th edition of the great book, it sounds something like...QuoteQuoteand it means... a really powerful strength!and wait! that doesnt explain why having sex feel so good?!not to hijack, but i think this is the continuation of the plot, ie on the side view (small thumbnails on youtube)...ps: as it already consume some amount of my time and i dont have time machine beside me
1911 youtube - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 01, 2011, 12:18:55 am
content: its really odd watching daves videos on youtube in 1911 mode

author: alexwhittemore
author_rank: Frequent Contributor
timestamp: April 01, 2011, 12:55:10 pm
content: DIY analog oscilloscopeDIY digital oscilloscope display (I'm going to make one out of an FPGA kit).(as was suggested) try to find an eager taker who needs a monitor.harvest all the nice bits (flyback, HV mosfets, big diodes, so on), put it all back together and recycle it at a proper hazardous waste site.
Cargo Cult And Junk Science  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 30, 2011, 12:34:24 pm
content: http://www.hhoem.com/

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: March 30, 2011, 12:46:08 pm
content: lol, my favourite -http://www.hhoem.com/Html/Product/6.htmlThe great thing about quantum mechanics is that no layperson understands it, so you can use any term from QM and nobody is going to call you out on it.QuoteLOL!

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 30, 2011, 02:34:07 pm
content: yeah it will solve the world energy problems

author: Frangible
author_rank: Regular Contributor
timestamp: March 31, 2011, 06:20:06 pm
content: Rockwell Automation's Retro EncabulatorWith an improved baseplate of prefamulated amulite.
Dodgy Capacitors (electrolytic) - Page 1
Forum section: electronics / general

author: Excavatoree
author_rank: Frequent Contributor
timestamp: March 31, 2011, 02:45:30 pm
content: I realize that when one buys a box of surplus electronic components as a "grab bag" for 8 dollars, one can expect that perishable components such as electrolytic capacitors may not be in "factory fresh condition." That's the price you pay for getting a couple hundred capacitors that may cost .50 to 1.00 (USD) each for substantially less. (depending on what else is in the box for 8.00) Keep in mind all were unused, but "shelf time" was unknown.I sorted the electrolytic capacitors out, and separated them into values. Some were easy to throw into the scrap bin - their ESRs were greater than 40 ohms, or they were made by some dodgy company, their capaitance measured much less than the nominal, or in many cases, a combination of these conditions.Some were easy to keep. ESRs were similar to brand new capacitors I have ordered recently from Digi-Key, and capacitance values were within the correct percentage of nominal.Difficult were those that were "in between." They weren't bad enough to immediately discard, but their ESRs were about double those of my new capacitors.I decided that I would discard any group that had a large variation in ESR - my theory was they were all very old, if some were drying, the rest would soon enough.I went back and forth about the consistent batches. Were they in good condition with a higher ESR? (Not as good as that of my new capacitors, even when new?) Were they consistently drying? I finally decided to throw them away, as I figured I shouldn't keep in my stock components that would only get worse with storage, and it would be foolish to store bags of "almost good" components. For what purpose would I use these? I wouldn't want to take a device apart, find a bad capacitor, and replace it with a marginal one. I wouldn't want to put one of these in a new design, and add yet another factor to consider when I throw the switch and it doesn't work.Do any of you other component scavengers have any opinions/thoughts about this?
Switch with low contact resistance - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: March 30, 2011, 10:47:37 pm
content: Just learned that multi-wafer switch has low contact resistance (~50mOhm).Is there any other type of (mechanical switch) which has lower contact resistance and can carry 10A current?Thanks.

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 31, 2011, 12:04:29 am
content: abundant!
Anyone buy from http://www.newark.com/ the element 14 USA?  - Page 1
Forum section: electronics / general

author: TheEENerd
author_rank: Contributor
timestamp: March 30, 2011, 09:22:30 am
content: What's the postage like?

author: saturation
author_rank: Super Contributor
timestamp: March 30, 2011, 11:47:30 am
content: Not recently, but they are righteous distributors; #3 in the USA in 2009, and typically within the top 10 who dominate national parts distribution, as I recall.http://www.electronicsadvocate.com/2010/05/13/electronics-distributors-struggle-in-2009/

author: TheEENerd
author_rank: Contributor
timestamp: March 30, 2011, 11:55:10 am
content: Element14 here in Sydney is one of my favorite source, but I can't find the BK 879B, I can buy it from newark, but not sure how much the postage gonna be. They said the postage can't be provided until the item is actually being posted. So I don't know if anyone has the experience with them.

author: johnboxall
author_rank: Unknown
timestamp: March 30, 2011, 12:15:30 pm
content: Mouser will FedEx it to Australia for free, however they don't have stock until May

author: TheEENerd
author_rank: Contributor
timestamp: March 30, 2011, 12:25:02 pm
content: No kidding! Free Fedex! That's great service. Thanks mate for letting me know!

author: ElektroQuark
author_rank: Unknown
timestamp: March 30, 2011, 02:20:35 pm
content: Quote from: TheEENerd on March 30, 2011, 11:55:10 amI have just acquire the 879B from Farnell in Spain.Element14=Farnell=Newark
Electronics in Copenhagen - Page 1
Forum section: electronics / general

author: dics
author_rank: Contributor
timestamp: March 22, 2011, 03:45:02 pm
content: Hi guys,I want to ask you if anyone knows if there are any interesting shops in Copenhagen/Denmark for an electronics geek like me.I will go there in a few days and i wanted to see how do the danish geeks have funThank you in advancedics

author: dengorius
author_rank: Regular Contributor
timestamp: March 25, 2011, 08:10:01 pm
content: I actually second that and (sorry for hijacking) extend it to the Kgs Lyngby areaTy all

author: dds
author_rank: Contributor
timestamp: March 30, 2011, 01:56:12 pm
content: There is Brinck electronic close to the the Norreport station, but nothing spectacular.www.brinck.dkFrederiksborggade 421360 København Khttp://www.elextra.dk/websider/images/brinck_butik.jpg
Earth hour-Anyone? - Page 1
Forum section: electronics / general

author: djsb
author_rank: Super Contributor
timestamp: March 26, 2011, 11:33:29 am
content: Anyone switching the lights off at 8:30PM tonight? Not much on TV anyway.http://earthhour.wwf.org.uk/?pc=AGT004001&gclid=CMfcjYWi7KcCFYob4QodOlTmawDavid.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: March 26, 2011, 11:39:40 am
content: Australia had started it , and Greece is an very hot supporter of the idea ,so we will do it and this year too.Personally I have got all ready , less power hungry devices , in everything I use ,and so I will keep everything on ..

author: Simon
author_rank: Unknown
timestamp: March 26, 2011, 12:35:54 pm
content: Quote from: djsb on March 26, 2011, 11:33:29 amwhats that all about ?

author: housey
author_rank: Newbie
timestamp: March 26, 2011, 12:46:30 pm
content: Its 8:40pm here, and I'm just about to switch my computer and all my lights off. Going for a drive in my v8 landcruiser ute

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 26, 2011, 01:46:44 pm
content: Quote from: Simon on March 26, 2011, 12:35:54 pmThe Panda.ps: i try to practise this not just 8.30pm. but 24/7 from now, and not just light, but fan, heater, and any not necessary equipment. beside saving energy, i also can save my billps: i'm looking after an inverter type air-con later, they say it use alot less electricity.

author: Simon
author_rank: Unknown
timestamp: March 26, 2011, 01:58:22 pm
content: Yes I have one of the lowest bills possible

author: Unknown
author_rank: Unknown
timestamp: March 26, 2011, 10:17:26 pm
content: NSW Labor can be commended for their efforts this year for earth hour with many of their representatives turning of their lamps and shredders at 6:00pm. Not only did they turn off early but it looks like many will leave those same lights out indefinitely.Clearly this is a real demonstration of a commitment to earth hour!

author: PeterG
author_rank: Frequent Contributor
timestamp: March 26, 2011, 10:42:24 pm
content: 9PM last nite i could only think of one thing to say about Liberals wining. "Ding dong ,the witch is dead.........."Regards

author: djsb
author_rank: Super Contributor
timestamp: March 26, 2011, 11:25:56 pm
content: oops, I forgot to turn my lights off

author: PeterG
author_rank: Frequent Contributor
timestamp: March 27, 2011, 12:11:46 am
content: We are rite into Earth hour here, we turn out our light for 8 hours every night.Regards
Has anyone tried this PCB service before? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: March 23, 2011, 05:06:38 pm
content: Has anyone tried this PCB fabrication service before?Futurlechttp://www.futurlec.com/PCBService.shtmlWell, the quality of the PCB the company provides may not be excellent, but the cost is relatively cheap (see attached image). The delivery cost is about USD9.00. Total cost is about GBP65.Or, do you know any company which offers better price?

author: mobbarley
author_rank: Regular Contributor
timestamp: March 23, 2011, 06:40:41 pm
content: I've had good results with futurlec's pcb service to australia.

author: johnwa
author_rank: Frequent Contributor
timestamp: March 24, 2011, 06:49:25 am
content: Yes, I have ordered a few boards from Futurlec, here is a picture of the latest one. The customer service can be a bit variable at times - you might need to prod them a bit to get your order. But I have been quite satisfied with the quality of the boards.

author: onemilimeter
author_rank: Frequent Contributor
timestamp: March 24, 2011, 10:49:34 am
content: What are the PCB output files did you guys send to Futurlec?My PCB is drafted using Eagle.

author: johnwa
author_rank: Frequent Contributor
timestamp: March 25, 2011, 11:52:51 am
content: Just send through the Eagle .brd file, no need to muck around with gerbers. It might not be a bad idea to send through some documentation detailing board size, material, layers, etc. Although most of the info they need is on the quote screen.
Steve Furber the creator of acorn and arm interview  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 25, 2011, 12:22:53 am
content: get this you guys are going to love ithttp://www.computinghistory.org.uk/det/5438/Steve-Furber-Interview-17-08-2009/

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 25, 2011, 02:47:55 am
content: Fantastic - the other vidhttp://www.computinghistory.org.uk/det/5299/Steve-Furber/has some overlap of material, but also some fascinating BBC Micro snippets,

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: March 25, 2011, 03:47:40 am
content: Awesome, I enjoyed that. Though the interviewer was a bit annoying with his "uhu...uhu...ABSOLUTELY!....uhu...UHU!...uhu!".

author: Zad
author_rank: Super Contributor
timestamp: March 25, 2011, 04:38:50 am
content: It is well worth watching the Acorn World interview too, where he describes how the entire operation of the initial ARM was simulated on a BBC Micro, and how all the design documents were stored on one floppy disk which he later kept in a box in his garage!Amazing what 2 people can do with no resources and no money.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 25, 2011, 11:34:32 am
content: Sorry the second link should behttp://www.computinghistory.org.uk/det/5633/Steve%20Furber%20Talk%20-%20Acorn%20World%20-%2013-09-2009Even if you have no interest in the history, there is a valuable lesson for all developers at about 22:00 in the above video...
Japan earthquake and "electronic consequences". - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: March 22, 2011, 11:19:25 am
content: I was reading an article about LCDs and HDDs problems occurred by the earthquake in Japan. Have anyone noticed anything in the "electronics core stuff" (chips, parts, instruments e.t.c.)? Availability problems, higher prices...http://www.digitimes.com/news/a20110318VL202.htmlhttp://www.digitimes.com/news/a20110318PD209.html

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 22, 2011, 11:31:57 am
content: Although not many parts are made in Japan these days, I think there are a lot of obscure but essential supplies that may have an effect - ISTR a while ago a chip shortage due to problems at a factory that made the plastic encapsulant for chips. There are probably umpteen other obscure niche areas supplied by a very few specialist Japanese companies that could have an impact.probably hard to predict at this stage, and affected manufacturers aren;t going to start shouting about it... I hear Renesas already has some fab closure issues.

author: Time
author_rank: Frequent Contributor
timestamp: March 22, 2011, 08:33:25 pm
content: I will report back as purchases for the year progress.

author: Zad
author_rank: Super Contributor
timestamp: March 22, 2011, 09:33:07 pm
content: TI have 1 plant quite severely damaged, and another offline. Details herehttp://newscenter.ti.com/Blogs/newsroom/archive/2011/03/14/update-from-ti-on-earthquake-damage-to-factories-in-japan-646520.aspxI had read that 2 major epoxy making sites were out of action too.

author: osmosis321
author_rank: Regular Contributor
timestamp: March 23, 2011, 12:09:07 am
content: I remember about 15 years ago some factory in Japan burned down, the cost of RAM more than doubled.Only time will tell how this latest disaster will affect the global supply chain. Methinks it won't be all that bad.

author: baljemmett
author_rank: Unknown
timestamp: March 23, 2011, 12:23:55 am
content: Quote from: osmosis321 on March 23, 2011, 12:09:07 amAs I recall, that was the Kobe earthquake. Knocked out, amongst other things, a fair chunk of the worldwide DRAM manufacturing capability.

author: the_raptor
author_rank: Regular Contributor
timestamp: March 23, 2011, 03:07:32 am
content: From what I have read we are still running on pre-earthquake inventory for most things. Most companies that I care about haven't suffered much damage and the major issue is the lack of power (most companies have voluntarily had 1-2 weeks of no production).Prices will probably spike in a few weeks when the old stock runs low coinciding with the consequences of a break in production.