hybridfree/eevblog-posts huggingface dataset:
Clouds got in my way--lack of them! - Page 1
Forum section: electronics / general

author: vk6zgo
author_rank: Super Contributor
timestamp: July 02, 2012, 04:58:55 pm
content: On Saturday,my other favourite Forum,QRZ.com,went walkies in the biggest way for 12 hours,due to a power failure causing the loss of the "Amazon Cloud"!I had a vague idea of how "Clouds" worked,but was not aware that whole websites lived & had their existence inside them.I also, in my naivety,thought Amazon sold books & stuff,not owning a"Cloud"!Did anyone else lose access to a favourite website during this event?

author: T4P
author_rank: Super Contributor
timestamp: July 02, 2012, 06:23:41 pm
content: I did not know of any sites that went walkiesbut i'm pretty sure i heard of Amazon clouds last year

author: SeanB
author_rank: Super Contributor
timestamp: July 02, 2012, 07:06:40 pm
content: You do know that cloud computing is just the same as server on internet.

author: Bored@Work
author_rank: Super Contributor
timestamp: July 02, 2012, 07:22:37 pm
content: Quote from: SeanB on July 02, 2012, 07:06:40 pmWith a few twists.And Amazon is indeed a big (some say the biggest) player in the field. The reworked their platform some time ago, splitting it in a generic part, providing cloud services, and special parts, running their book and whatnot shops on top of their own cloud services.Google is really pissed about this, because they did a similar thing, but their services are not very popular. Amazon got it largely right for all kinds of e-commerce, because they have a big, demanding e-commerce user on top of their cloud services, themself.
Got a faulty 6.5 digit meter... - Page 1
Forum section: electronics / general

author: tom66
author_rank: Super Contributor
timestamp: June 29, 2012, 09:59:48 pm
content: Bought this one for £45. Fault is a failed line filter, probably caused by one of the X-caps. It is a Solatron 7150plus.It still powers up fine and all functions work, so before I repair it, I would like to check that it is in calibration and all the ranges are functional. (Without the repair it will kick back a lot of EMI from its SMPS.)My only reference standard is my BK 2709B, which is from recollection +/-0.7% on DC volts. The readings are about the same on the 7150plus so any error is likely to be small. However, the meter is rated to some +/-0.004% on 2.30000V range.I am also able to acquire some 1.96k 0.1% resistors, so I will check ohms ranges at some point using them.So, what's the best way to check this thing is in cal?

author: david77
author_rank: Frequent Contributor
timestamp: June 29, 2012, 10:12:26 pm
content: To check that properly you'll probably need to go to a metrology lab. I can't see a reasonable way to do a check to 0.004% accuracy in a home lab setting, or most commercial lab settings, too.Why don't you just fix it anyway? If it's only a blown X cap that's only a few pennies and a bit of soldering. I remember reading here that is a typical fault with these meters.

author: tom66
author_rank: Super Contributor
timestamp: June 29, 2012, 10:24:08 pm
content: The X-cap is integral to a potted filter IEC block, so the cap is essentially impossible to replace. The whole block must be replaced, around £15 for the exact part. However, my workplace just scrapped a load of WEEE stuff and I got lots. Some included potted IEC mains filters so I'll see if I can make them fit.I may be able to borrow a precision TTi bench meter from there, to calibrate it against. I shall see...
Silicon Chip magazine in US? - Page 1
Forum section: electronics / general

author: MikeK
author_rank: Super Contributor
timestamp: May 22, 2012, 06:45:08 pm
content: Anyone know if there is a US distributor for Silicon Chip magazine? Their website lists a 1-year subscription for $140, but Futurlec sells issues for $8, which makes the subscription price seem silly.

author: Bored@Work
author_rank: Super Contributor
timestamp: May 22, 2012, 07:06:11 pm
content: Quote from: MikeK on May 22, 2012, 06:45:08 pmIs that maybe Australian Dollars vs. US Dollars?IIRC Silicon Chip also has an online-only subscription. Maybe that one is cheaper?

author: MikeK
author_rank: Super Contributor
timestamp: May 22, 2012, 07:59:03 pm
content: Quote from: BoredAtWork on May 22, 2012, 07:06:11 pmI hadn't considered that, but it looks like the exchange rate is even money. Online version is cheaper, but not significantly cheaper than Futurlec's hard copy price...and I prefer a hard copy. I'll probably just buy the issues I want from them.

author: SgtRock
author_rank: Unknown
timestamp: June 29, 2012, 09:10:15 am
content: Greetings EEVBees:--A friend of mine gave me some old copies of Silicon Chip. I have to say, this is a great, great magazine. Any kid bitten by the Electronics bug will read this mag cover to cover multiple times, even though he may not understand everything just yet. These kinds of periodicals have pretty much disappeared from shelves in the US.--Should Silicon Chip every pass on, it will be sorely missed and remembered with nostalgic affection."I told you so, you damned fools."Hugo GernsbackBest RegardsClear Ether
Quadrotor awesomeness - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 26, 2012, 03:58:10 pm
content: Apparently they used about 20 VICON moiton capture cameras to track the motion and feed back to the (individually calibrated) moving-head lights.I hear there is a big making-of video in the works.

author: pickle9000
author_rank: Super Contributor
timestamp: June 26, 2012, 04:55:32 pm
content: So would they use IR as a beacon on each unit? I'm guessing they would need constant feedback. I wonder if they tracked the altitude with cameras as well, or if they had a system in the copter to provide that.It would need a very high update rate to keep the from crashing. Must have been a massive vortex problem.

author: free_electron
author_rank: Super Contributor
timestamp: June 26, 2012, 08:00:21 pm
content: this needs some daft-punk music instead of the bleeep-thing now on it..

author: hlavac
author_rank: Frequent Contributor
timestamp: June 26, 2012, 09:07:41 pm
content: If they used motion capture cameras that provides full 3D position, no need for separate altitude tracking system. These usually work at up to 120Hz refresh rate.

author: icon
author_rank: Regular Contributor
timestamp: June 26, 2012, 11:58:25 pm
content: I, for one, welcome our new quadcopter overlords.J

author: PeterG
author_rank: Frequent Contributor
timestamp: June 27, 2012, 01:43:55 am
content: Quote from: icon on June 26, 2012, 11:58:25 pmWell said, i totally agree........Awesome display.Regards

author: PeterG
author_rank: Frequent Contributor
timestamp: June 27, 2012, 01:45:01 am
content: The only way to really watch this is in Full HD on a big TV.........Regards

author: PeteInTexas
author_rank: Frequent Contributor
timestamp: June 28, 2012, 06:18:57 am
content: Hey I wonder if this can be used to prank a tin-foil hat wearing neighbor in the middle of the night. To see the look on their face as they run out to the street in their skivvies (and tin foil hat of course) would be priceless.

author: M. András
author_rank: Super Contributor
timestamp: June 28, 2012, 08:01:16 pm
content: Quote from: free_electron on June 26, 2012, 08:00:21 pmreminds me of the TRON, lightbikes and the rest of the visual effects. with the daft punk too

author: PeterG
author_rank: Frequent Contributor
timestamp: June 29, 2012, 02:07:02 am
content: Quote from: PeteInTexas on June 28, 2012, 06:18:57 amPlease refrain from putting evil ideas in my head....... my wife finds it disturbing.Regards
Software router for win xp - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: June 28, 2012, 04:27:37 pm
content: Hello good people, having got a HTC I want to be able to connect it to the internet via a win xp pc using the wired internet connection made wireless with a dongle using xp (7 has this built in and many programs rely on it so are not compatible with xp)Sent from my HTC Desire HD A9191 using Tapatalk 2

author: Sionyn
author_rank: Frequent Contributor
timestamp: June 28, 2012, 04:35:13 pm
content: internet connection sharinghttp://support.microsoft.com/kb/306126

author: Simon
author_rank: Unknown
timestamp: June 28, 2012, 04:54:11 pm
content: It's for using it at work without using the internet bandwidth up

author: Simon
author_rank: Unknown
timestamp: June 28, 2012, 06:13:17 pm
content: Quote from: Sionyn on June 28, 2012, 04:35:13 pmas that has instructions for the client pc I'm out there as it's a phone, not a pc I'm connecting with

author: Simon
author_rank: Unknown
timestamp: June 28, 2012, 06:14:08 pm
content: Quote from: iamwhoiam on June 28, 2012, 04:41:46 pmErr, what are you on about ? if XP is the one having problems sharing the internet why would i want to run it in 7 to use as a software router ?

author: baljemmett
author_rank: Unknown
timestamp: June 28, 2012, 11:04:42 pm
content: Quote from: Simon on June 28, 2012, 06:13:17 pmMost of the instructions still apply -- the 'on the host computer' ones. Basically what you want to do is set up your wireless dongle (presumably as an ad hoc network), and then in the properties for your existing Internet connection on the PC select the option to share it with other computers, selecting your new wireless network as the network to share it with. (This is from memory, I'm afraid, as the plugpack for my only remaining XP machine went pop the other day!)Once that's done the phone should be able to connect to the wireless network; if it doesn't correctly get an IP address then use the details given in the 'client computer' section of the MS document as a basis for configuring the same settings on the phone. From that point on the XP machine will be acting as a NAT gateway for the phone, job's a good'un.
Device for visualizing current - Page 1
Forum section: electronics / general

author: nitro2k01
author_rank: Frequent Contributor
timestamp: June 28, 2012, 07:12:22 am
content: I saw this and thought it was appropriate to post it here after Dave's and Mike's teardown and review of the current probe, and especially Mike's low budget current visualization using an LED and a long exposure camera shot. This device is a similar current probe on an arm that scans the test subject to create a 2D image. This will of course only work if the current is relatively constant over time, but it's an interesting product.

author: Unknown
author_rank: Unknown
timestamp: June 28, 2012, 08:25:45 am
content: Yep, I think Mike was the originator of that idea.

author: chrome
author_rank: Regular Contributor
timestamp: June 28, 2012, 09:57:05 am
content: Quote from: nitro2k01 on June 28, 2012, 07:12:22 amHow is a 615€ / 770$ / 500£ Aim-TTI I-Prober 520 cheap exactly? Not even including the camera.Quote from: HAL-42b on June 28, 2012, 08:25:45 amAre you saying these guys stole the idea from mike?

author: nitro2k01
author_rank: Frequent Contributor
timestamp: June 28, 2012, 02:58:38 pm
content: Quote from: chrome on June 28, 2012, 09:57:05 amSorry, I realized that was a bad choice of words. I should've said something like low complexity or hackish.Quote from: chrome on June 28, 2012, 09:57:05 amMaybe I'm overinterpreting it, but I think that was sarcasm, implying I thought they stole the idea from Mike. Or something,

author: SeanB
author_rank: Super Contributor
timestamp: June 28, 2012, 03:11:34 pm
content: Cheap compared to magnetic paper and a massive polariser film and light source to read it with.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 28, 2012, 03:35:49 pm
content: Quote from: nitro2k01 on June 28, 2012, 02:58:38 pmActually I got the idea from someone who a while ago used a LED to visualise the read field of an RFID antenna:http://www.nearfield.org/2009/10/immaterials-the-ghost-in-the-field

author: Unknown
author_rank: Unknown
timestamp: June 28, 2012, 04:13:04 pm
content: Quote from: chrome on June 28, 2012, 09:57:05 amIt was a public YouTube video. I don't know how you arrived at the idea of theft.Scanning of a surface with X-Y movement is nothing new, neither is the flux sensor. What is new is the use of both techniques to visualize currents on a PCB (or any surface for that matter). This is something new and was demonstrated publicly for the first time by Mike unless I am missing something.Hi Mike! It was an awesome video.
every country needs a paxman  - Page 1
Forum section: electronics / general

author: siliconmix
author_rank: Frequent Contributor
timestamp: June 28, 2012, 08:25:28 am
content: who is the paxman of your country ?

author: david77
author_rank: Frequent Contributor
timestamp: June 28, 2012, 09:03:05 am
content: Yeah, Paxman is great. I wish we had a TV presenter like him here, ours are too soft, they wouldn't dare start arguing with politicians.
EEVBLOG ICON for PC...eevblog-icon.ico - Page 1
Forum section: electronics / general

author: anishd19
author_rank: Newbie
timestamp: June 25, 2012, 05:56:00 pm
content: Do you save a copy of fav videos to your PC(like I do)?then here's an icon...to customize your folder...eevblog-icon.ico -->http://db.tt/AU9IZJYhA tribute to Dave!

author: FenderBender
author_rank: Super Contributor
timestamp: June 27, 2012, 03:18:02 am
content: lol
Microscope working area - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 22, 2012, 09:43:20 pm
content: Can you change the vertical working area on a microscope by changing the eyepieces ?Dave on a recent video mentions that you can do that by putting a wideview objective lens, I would like to try the eyepiece approach.Please comment.David.

author: robrenz
author_rank: Super Contributor
timestamp: June 23, 2012, 01:45:59 am
content: eyepiece will not change the working distance.

author: Circuitous
author_rank: Unknown
timestamp: June 23, 2012, 02:20:32 am
content: You can double the working distance by using a 0.5x Barlow lens, which goes in front of the objective lens.http://en.wikipedia.org/wiki/Barlow_lens

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 25, 2012, 06:25:22 pm
content: Thanks guys.I'm trying to get a 0.7x or 0.75x barrow lens.David.

author: Neganur
author_rank: Unknown
timestamp: June 26, 2012, 04:26:58 pm
content: I'm using a 0.7X Barlow lens and it's just barely enough distance to work with ( 5" or 13 cm ). Consider a 0.5x lens or find a store that lets you test the difference.

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 26, 2012, 05:41:11 pm
content: Quote from: Neganur on June 26, 2012, 04:26:58 pmMoiCan you tell the difference on the distance for the working area with and without the barlow lens ?I was looking for a store that will let me test the lenses, but the one I visited few years ago is out of business, now everything is pretty much on the internet.David.

author: StubbornGreek
author_rank: Frequent Contributor
timestamp: June 26, 2012, 08:01:14 pm
content: Quote from: DavidDLC on June 26, 2012, 05:41:11 pmYes, .5 will give you about 8 inches of work space (a good amount as it keeps your head at a distance where you won't get tired too easily and allows your hands to work at a natural position also).

author: EEVblog
author_rank: Unknown
timestamp: June 27, 2012, 12:53:39 am
content: Quote from: DavidDLC on June 22, 2012, 09:43:20 pmNo, that will only change your total magnification.To change your working distance you have to change your primary lens (or modify it with a barlow lens).0.5x barlow lens are available on ebay for almost every scope on the market.Dave.
The Coming War on General-Purpose Computing - Page 1
Forum section: electronics / general

author: RJSC
author_rank: Regular Contributor
timestamp: June 25, 2012, 03:09:12 pm
content: Here are a video of a talk and an article about the subject.They are the same talk, but for the ones (such as myself) who find it easier to listen than to read, I've added the talk on video. The Video also features a Q&A session at the end.Now we not only have to fight for free software, but also, for free (as in freedom to use) hardware.It started with Apple, now Microsoft also wants to lock down ARM devices, and even some Android phones are starting to be shipped with bootloaders trying to prevent you from installing a newer version of the open-source smart phone operating system, so that when you want a newer version of the OS, you have to buy a new phone.Lockdown: The coming war on general-purpose computing -http://boingboing.net/2012/01/10/lockdown.html

author: digsys
author_rank: Unknown
timestamp: June 25, 2012, 04:16:04 pm
content: Quotec'mon Dave, you gotta make that the EEVblog theme.
Connector help - Page 1
Forum section: electronics / general

author: McPete
author_rank: Regular Contributor
timestamp: June 26, 2012, 01:27:15 am
content: Hey all,I've had a bit of a puzzler here at work for a few days, so I'd like to ask you all for some help: I've been working on an FTIR that the users are reporting noise problems with. When I removed the detector and preamp assembly, a rather dodgy bit of soldering caught my eye on a particular connector.What it was/is is a 3mm(o/d) SMB connector on RG174, going into a 90 degree receptical on the PCB. HOWEVER, it's not one of the standard 0.1, 5-pin jobs that Farnell et-al have... It was a two pin connector, 5mm centre-to-centre, with 0.8mm diameter leads. Unfortunately, I made a bit of a hash of getting it off the board and mangled it quite badly.I was just hoping that someone out there might have run across a similar connector. If I happen across something similar, I'll post it up.Cheers,Peter

author: Psi
author_rank: Super Contributor
timestamp: June 26, 2012, 01:43:52 am
content: We need a picture of it, it's too hard to find stuff from a description alone

author: free_electron
author_rank: Super Contributor
timestamp: June 26, 2012, 03:15:31 am
content: check pasternack enterprises website.. if they don;t have it it don;t exist

author: McPete
author_rank: Regular Contributor
timestamp: June 26, 2012, 03:22:19 am
content: Hi Psi,Thanks for the rapid response. Please pardon my utterly terrible model, as I've just started using Sketch-up as of 20 minutes ago for purposes of this very question! Here's a model that shows VERY roughly what I'm on about!Thankyou again for your help!EDIT 1:AH-HA! I just saw it! Third from the left on the front page of this catalog:http://www.sh-shengzhuo.com/upfile/pdf/NON-MAGNETIC%20CONNECTORS.pdfEdit 2:Radiall R280220007, which is a fixed receptical, not a detachable connector as I thought. Oh dear, I must look very silly now.Thankyou for your help!
Problems with connecting Rigol DM3051 multimeter via USB to PC - Page 1
Forum section: electronics / general

author: r0tw4n9
author_rank: Newbie
timestamp: June 25, 2012, 04:56:06 pm
content: Hello together,i recently bought a Rigol DM3051 bench multimeter. So far i am still having my problems connecting the unit to my PC.The multimeter is reset to factory settings and came with firmware 03.12.00.03.11.00.I installed NI-VISA runtime 5.1.1 on my Windows 7 notebook and installed UltraLogger for DM3000 Version 00.01.00.00 and Version 00.03.00.00. Software says that it is connected via USB, but when i press the green arrow (Download and Start Process) the button keeps beeing pushed in for a few seconds and the nothing happens. On the display of the DM3051 "RMT" states that it is connected.Same problem on my Windows XP notebook.The button "Time synchronisation" always gives me: "Instrument Time set unsuccessful" - after that the multimeter has timewarped into the year 2050!Also out of the blue the software crashes with a "datalogger/ acquirization controller error".Has anybody success in connection his Rigol multimeter to a PC? Is there any other thrid-party softwrae i might use instead?

author: Bored@Work
author_rank: Super Contributor
timestamp: June 25, 2012, 06:02:47 pm
content: Try to pester Rigol for software updates (firmware, PC software, whatever they are willing to give you). Good luck with that.QuoteMaybe LabView. But, (A) lots of $$$, and (B) if the meter's firmware is faulty, or the driver doesn't work then LabView won't help.

author: mukymuk
author_rank: Contributor
timestamp: June 25, 2012, 08:29:29 pm
content: Try emailing jason_chonko at rigoltech dot comHe's been very helpful for problems that have come up related to my DS4000.BTW, I had similar weird problems with the PC software for my scope until I installed it to a non-"C:\Program Files" directory. The basic problem is that the software tries to save data to its installation directory which can get denied by the OS depending on how you have your security set up. I fixed the problem by installing the software to my D:\ drive.
SMT soldering, SMD to DIP adapters. Tips request for beginner. - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: June 25, 2012, 12:36:15 pm
content: /.

author: Rerouter
author_rank: Super Contributor
timestamp: June 25, 2012, 12:39:26 pm
content: or you could buy a thing of flux, watch 10 or so detailed walkthroughs on youtube and drag solder your chip, its easier than reflowing for the first time, (yes i mean to the adaptor unless you had a pcb in mind)

author: digsys
author_rank: Unknown
timestamp: June 25, 2012, 01:38:28 pm
content: QuoteMaybe try to find a local tech company (look for ads for contract assembly / design) IF you really don't want to set up to do it.I've done that many times in the past. Many are happy to do it, some for a small fee, and you do get a few grumpy ones. That's their problem.I used to use a fine tip weller, 10thou solder and paste, and was quite successful. Then I bought a JBC solder station with 4/6 thou tips and 4/6 thou solder,light flux paste and a 3D stereo boom microscope, and everything bar BGA is a breeze. OBVIOUSLY, this is not a consideration for now, just saying thatIF you ever get really involved, it's not a big deal to set up to do by hand. After all, IF you do decide to continue, you'll need good tools anyway.

author: T4P
author_rank: Super Contributor
timestamp: June 25, 2012, 01:53:36 pm
content: You are better off getting a 858D on the cheap .. I got mine at $16USD while in chinahttp://www.aliexpress.com/product-fm/546434504-NEW-220V-ATTEN-AT-858D-SMD-Hot-Air-Rework-Station-Hot-Blower-Hot-Air-Gun-Heat-wholesalers.html
Attaching heat sync to IC - Page 1
Forum section: electronics / general

author: JonnyBoats
author_rank: Regular Contributor
timestamp: July 02, 2012, 04:23:33 am
content: I know PC's attach the heat sync to the CPU by mechanical means using heat sync compound.What does one do when there is not enough room for a mechanical bracket? I would like to attach a small aluminum heat sync to a 12mm square IC.

author: free_electron
author_rank: Super Contributor
timestamp: July 02, 2012, 04:39:19 am
content: silpads. made by bergquist ( amongst others , but bergquist is the company to go to for these kind of things )these are self-adhesive isolating pads specifically made to glue heatsinks to ic's.As long as the chip has never run hot the pad is removable. Once the pad has been heated above a certain temperature the glue cures and becomes irremovable.They typically send these things through the reflow oven to cure them.Trying to remove the heatsinkgk of the chip will rip the chip of the board. the bond is that strong.They also have a thermacl conduictive glue called BP100. works very well.

author: T4P
author_rank: Super Contributor
timestamp: July 02, 2012, 05:38:34 am
content: They are also good/bad indicators your stuff has been overheating ...
Starting a new electronics blog - Page 1
Forum section: electronics / general

author: reagle
author_rank: Unknown
timestamp: June 25, 2012, 04:05:29 am
content: Hi guys,it took a few years of thinking that it'd be a good idea to have my own blog, but it finally became a bit more than idea. And I have to thank Dave for finally getting me moving. His example is a big inspiration for usSo here I present my new blog of all things electronic.http://kuzyatech.comComments, suggestions are welcome!I am working through backlog of older things for now, targeting about one post a day, including new content. Will see how long I can sustain that

author: EEVblog
author_rank: Unknown
timestamp: June 25, 2012, 04:45:47 am
content: Continuous content is the key. One post a day is an excellent goal, keep it up and enjoy!Dave.

author: Mint.
author_rank: Frequent Contributor
timestamp: June 25, 2012, 05:45:18 am
content: I like the idea of short little posts as it seems to be perfectly sized and does not outlast the attention span of people.

author: EEVblog
author_rank: Unknown
timestamp: June 25, 2012, 06:14:45 am
content: Quote from: Mint. on June 25, 2012, 05:45:18 amI cater to the more exclusive long attention span marketDave.

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 25, 2012, 06:28:58 am
content: is there any microcontroller and programming specific blog out there? not specific to any brand or vendor. mcu and embedded programming in general?

author: T4P
author_rank: Super Contributor
timestamp: June 25, 2012, 06:36:16 am
content: Quote from: Mechatrommer on June 25, 2012, 06:28:58 amNot that you can easily find one ... all the mcp blogs i go to mostly vendor and mcu series specific ...

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 25, 2012, 09:06:11 am
content: Quote from: DaveXRQ on June 25, 2012, 06:36:16 amso i guess eevblog is still the best for "brandless" mcu section. not that "absolutely" best, but "relatively" best

author: T4P
author_rank: Super Contributor
timestamp: June 25, 2012, 09:16:15 am
content: Quote from: Mechatrommer on June 25, 2012, 09:06:11 amIt is

author: LEECH666
author_rank: Frequent Contributor
timestamp: June 25, 2012, 09:41:50 am
content: Quote from: EEVblog on June 25, 2012, 06:14:45 amWell good! I am almost always entertained / educated by your videos, Dave. Keep it that way and don't mind the "video x is too long"-naggers.Cheers,Florian

author: reagle
author_rank: Unknown
timestamp: June 25, 2012, 11:22:43 am
content: The big selling point of a video for me is that you can roll back and forward as neededI find myself watching certain fragments a few times if for example I was too slow to grasp the concept at first. That's one of the reasons things like Khan academy became so popular, compared to traditional "dude talking at you at his speed in front of a white/black board " lectures.
how much data does a mobile phone use for internet ? - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: June 24, 2012, 12:58:23 pm
content: so I'm going to get a decent phone at long last. I guess I'll soon find myself on the internet and using my data bundle up. How much do I realistically need ? will my current tarrif I can bolt on 500 MB for £2.50, will 500MB do ? I know webpages and the like are humungus these days but what sort of traffic do mobiles handle ? (I'm thinking the horrid flash adverts on all websites etc)

author: PeterG
author_rank: Frequent Contributor
timestamp: June 24, 2012, 01:22:26 pm
content: This is a very complex question.Data usage is made of 2 parts.The first is your general internet surfing, a lot of sites now detect mobile devices and server lite pages to mobile devices.The second part is the data used by Apps. This is the hidden data usage that catches a lot of people out.It all comes down to how you use your phone, there is no easy was to pre determin the amount of data you will use. For me, 500mb is really small. For others it will me a huge amount.Regards

author: Simon
author_rank: Unknown
timestamp: June 24, 2012, 01:37:38 pm
content: hm, to be honest I'd not surf the net much on a phone, I always carry my laptop with me and am generally near wifi, my main use would be for things like skype and free text apps

author: joelby
author_rank: Frequent Contributor
timestamp: June 24, 2012, 01:53:15 pm
content: Probably not a lot then (unless you make loads of Skype calls, or video calls), so 500 MB might be sufficient. You should keep an eye on it using your provider's usage meter or phone's built-in data meter (bear in mind that telcos usually consider the sum of uploads and downloads toward your allowance) and top it up if it looks like you will exceed it.The biggest contributors toward data use are:"Tethering" a computer to your phone to provide Internet access on the go, and then browsing large or Flash-heavy sites (the mobile sites you would access directly from the phone are sometimes more streamlined than the non-mobile sites)Viewing movies from streaming sites such as YouTubeLong, boring commutes on public transport

author: Monkeh
author_rank: Super Contributor
timestamp: June 24, 2012, 01:57:32 pm
content: Be aware that ads in free apps can very, very rapidly add up to significant amounts of data.

author: Simon
author_rank: Unknown
timestamp: June 24, 2012, 02:13:41 pm
content: yea the free texts app is $0.99 for a year with no adds.
Digital Microscope/Camera? - Page 1
Forum section: electronics / general

author: gtyrrell1
author_rank: Contributor
timestamp: June 23, 2012, 04:51:11 am
content: Trying to find a reasonably priced digital microscope/Camera with stand to view and work on logic boards.Any suggestions on makes, models, etc.?

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: June 23, 2012, 11:38:00 am
content: I bought a microscope from this company, they had excellent service and customer support.And when the price was right with good quality, there was not so much elsewhere to go.. :-)http://www.amscope.com/When i looked at their website i found that they now has a super sale.. 52% on everything!"AmScope’s Summer Saleplus Free Shipping. Practically everything in the store is onsale with 52% off the regularly marked price plus FreeShipping within the lower 48 States of the US."

author: gtyrrell1
author_rank: Contributor
timestamp: June 23, 2012, 04:30:45 pm
content: Thank you, I am looking for something more specific. Like what is most common to use so that you can project to a monitor and have enough room underneath to be able to do the repair work needed on the logic boards.
Making PCBs on glass - Page 1
Forum section: electronics / general

author: bradleytron
author_rank: Regular Contributor
timestamp: June 20, 2012, 07:11:17 pm
content: I found this very interesting instructional DIY video for making PCBs on glass for anyone who might be interested.

author: SeanB
author_rank: Super Contributor
timestamp: June 20, 2012, 07:56:14 pm
content: Sharp made a glass substrate and put a complete working Z80 processor on it, just to show off their amorphous silicon on glass technology

author: krenzo
author_rank: Regular Contributor
timestamp: June 20, 2012, 10:23:13 pm
content: I am personally offended by that man's soldering iron tip.

author: T4P
author_rank: Super Contributor
timestamp: June 21, 2012, 12:44:24 am
content: Quote from: krenzo on June 20, 2012, 10:23:13 pmIt's like he never ever took care of it !

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: June 21, 2012, 01:29:58 am
content: Quote from: krenzo on June 20, 2012, 10:23:13 pmYou should see mine!

author: ChrisW
author_rank: Contributor
timestamp: June 21, 2012, 08:28:31 am
content: Why would you want to make PCBs on glass for?

author: TriodeTiger
author_rank: Regular Contributor
timestamp: June 21, 2012, 09:22:17 am
content: Quote from: ChrisW on June 21, 2012, 08:28:31 amIsn't it clear?

author: WorldPowerLabs
author_rank: Regular Contributor
timestamp: June 21, 2012, 09:15:15 pm
content: Quote from: MmCoffee on June 21, 2012, 09:22:17 am"Crystal" clear!

author: bradleytron
author_rank: Regular Contributor
timestamp: June 22, 2012, 02:55:19 am
content: Quote from: ChrisW on June 21, 2012, 08:28:31 amAs with the project shown in the video, a touch sensing application for one example. I'd also like to know if leakage currents on fiberglass material would be the same or better with glass, e.g., for high voltage circuitry.

author: SeanB
author_rank: Super Contributor
timestamp: June 22, 2012, 04:59:27 am
content: Glass is better, after all most high voltage insulators are made from it.Though that depends on whatever glass you use, some are quite conductive.

author: tesla500
author_rank: Regular Contributor
timestamp: June 22, 2012, 08:08:05 pm
content: Quote from: MmCoffee on June 21, 2012, 09:22:17 amI see what you did there (quite clearly).

author: siliconmix
author_rank: Frequent Contributor
timestamp: June 22, 2012, 08:27:55 pm
content: dont see the point of using glass .not very flexible hard to drill and dangerous .

author: T4P
author_rank: Super Contributor
timestamp: June 23, 2012, 08:26:58 am
content: Quote from: siliconmix on June 22, 2012, 08:27:55 pmGlass shards ... OUCH

author: SeanB
author_rank: Super Contributor
timestamp: June 23, 2012, 09:34:09 am
content: Easy to drill glass, just use tungsten carbide bits and lubricant. Of course the range of drill sizes is limited, I have only seen 6mm and 10mm glass bits, they work very nicely.
Cheapest way to make a one shot circuit of unstable time of less than 1us - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: June 20, 2012, 08:24:54 pm
content: Supply: 5V. Trigger pulse transition from 17V to 0V. Duration of low signal from 150ns. What are your suggestions. Thank you for you time!M

author: NiHaoMike
author_rank: Super Contributor
timestamp: June 21, 2012, 01:30:50 am
content: What about a cheap microcontroller and a resistor?

author: andy1
author_rank: Contributor
timestamp: June 22, 2012, 06:55:43 am
content: I would use 74 series 123 or 221 depending if you want retriggerable or non-retriggerable one. 555 i guess would also work but I have more experience with 74123 and 74221, just add some zener clipper or something and it should work nicely. You can easily choose whether to trigger on falling or rising edge.
Agilent DSO to MSO conversion - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 06, 2012, 08:02:03 pm
content: Is it worth to pay around $700.00 USD for the 8 bit logic analyzer and convert the Agilent DSO to MSO ?I really hate the high price for this piece of kit and it is only 8 bits.David.

author: EEVblog
author_rank: Unknown
timestamp: June 06, 2012, 10:14:54 pm
content: Only you can answer that one.You are paying a premium for the convenience of having mixed signal capability which you wouldn't get (easily) with say a cheaper USB logic analyser.If that's important to you, then it might well be worth every cent. If it's not important then a USB LA is much better value for money.And keep in mind that you are getting top quality probes for that price.Dave.

author: tom66
author_rank: Super Contributor
timestamp: June 06, 2012, 10:53:27 pm
content: I don't know enough about the Agilent scopes, but is that module simply a few comparators? Does it have any significant brains to it? Again you are probably paying for R&D.

author: free_electron
author_rank: Super Contributor
timestamp: June 06, 2012, 11:54:31 pm
content: The brains are built into the scope. the module is just a programmable level shifter.The key to this thing is that you can synchronize the analog and digital world. the triggering capabilitis and protocol decoding far surpass what is possible with usb based machines. and once you work with clock signals beyond roughly 10MHz the usb thingies all conk out... usb trhoughput is not constant and there is no guarantee on dropped packets.. the Agilent scope will not do this and go as fast as the samplers in the scope can handle. ni toher words , if your scope can do 100Ms/s the LA will follow that without skipping a beat ... something the USB things cannot do , unless they have an on board buffer like the zeroplus type machines.

author: NeilR
author_rank: Newbie
timestamp: June 23, 2012, 10:11:53 am
content: IQuote from: free_electron on June 06, 2012, 11:54:31 pmI agree with free_electron, the two keys to it for me are the total synchronisation of the analogue and digital signals and the triggering where any of the trigger type can combine a combination of analogue and digital channels
Protested Porcine Prognosticator Picks Portugal - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: June 21, 2012, 09:58:48 pm
content: Dear EEVBees:--Please see the below link about Funtik the Psychic Psoccer Pswine who picks winners by which team's bowl he chooses to eat out of first. Funtik is the one seen at right.http://www.edmontonsun.com/2012/06/21/topless-euro-protester-interrupts-psychic-pigs-feeding"Never wrestle with pigs. You both get dirty, and the pig likes it."George Bernard Shaw 1856 - 1950Best RegardsClear Ether
Connection Problems - Page 1
Forum section: electronics / general

author: caroper
author_rank: Regular Contributor
timestamp: June 21, 2012, 03:15:41 pm
content: I have been getting this error quite a lot the past 2 daysQuoteIs anyone else finding this or is it just my connection timing out?CheersChris

author: eevblogfan
author_rank: Frequent Contributor
timestamp: June 21, 2012, 03:23:07 pm
content: Ummm , yep---> "Connection ProblemsSorry, SMF was unable to connect to the database. This may be caused by the server being busy. Please try again later. "I only from about 18:00 ( at GMT+3 ) or about 15:00 on the US

author: SeanB
author_rank: Super Contributor
timestamp: June 21, 2012, 03:51:02 pm
content: Yes, but only on portions of the site, photos mostly so probably a caching issue for images, the rest of the site carries on working well.

author: eevblogfan
author_rank: Frequent Contributor
timestamp: June 21, 2012, 04:46:35 pm
content: not really . I wanted to go from the begginer's forum into the product revew etc . and then this note were stroke mebummer !
Physics Community Afire With Rumors of Higgs Boson Discovery - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: June 20, 2012, 04:29:46 pm
content: One of the biggest debuts in the science world could happen in a matter of weeks: The Higgs boson may finally, really have been discovered.apparentlyhttp://www.wired.com/wiredscience/2012/06/latest-higgs-rumors

author: Time
author_rank: Frequent Contributor
timestamp: June 20, 2012, 05:17:01 pm
content: The nature of the science is so anticlimactic. They have to collect mass amounts of data in order to prove the particles of the standard models exist. Instead of having evidence of the particles in one experiment the particles slowly 'emerge' into discovery through the convergence of statistical data. YAWWWNNN

author: MikeK
author_rank: Super Contributor
timestamp: June 20, 2012, 06:16:21 pm
content: Quote from: Time on June 20, 2012, 05:17:01 pmIt's not the nature of science that's anticlimactic, it's the nature of the way the media report on it. Science is hard work, not a roller coaster ride. It doesn't fit well into the 15-second attention span, so we wind up with silly, repetitive articles.I like the first comment from that article:"The next article on the Higgs Boson had better be the discovery of the Higgs Boson"
I bet everyone knows buy9.99 and i checked where they operate from ... - Page 1
Forum section: electronics / general

author: T4P
author_rank: Super Contributor
timestamp: June 19, 2012, 08:16:04 pm
content: IT'S a bit odd ...http://www.streetdirectory.com/businessfinder/company_detail.php?companyid=87557&branchid=168046Now i know why they know zilch about test equipment ...I'm going over tomorrow to buy one of the better power supplies (30-3amps dual supply)

author: EEVblog
author_rank: Unknown
timestamp: June 20, 2012, 12:05:16 am
content: I've bought stuff from them before with mixed results.You just have to assume that everything they sell either does not work in some way, or has some latent fault.It's a lucky dip ebay store!Dave.

author: T4P
author_rank: Super Contributor
timestamp: June 20, 2012, 06:28:10 am
content: Whoever knew they dealt in Industrial equipment !

author: SeanB
author_rank: Super Contributor
timestamp: June 20, 2012, 03:51:34 pm
content: I would love to visit the store........

author: T4P
author_rank: Super Contributor
timestamp: June 20, 2012, 03:59:36 pm
content: Quote from: SeanB on June 20, 2012, 03:51:34 pmUPDATE: Did not go there today, but next week with ... a trolley ...

author: SeanB
author_rank: Super Contributor
timestamp: June 20, 2012, 04:14:16 pm
content: Take a second one along, and send sea mail to me.
Anyone used zlectronic.com before? - Page 1
Forum section: electronics / general

author: PetrosA
author_rank: Frequent Contributor
timestamp: August 31, 2010, 01:31:35 am
content: I need to get a replacement screen for my son's digital camera, and it seems these guys have it. Has anyone used them before? Are they safe? What seemed strange to me was that clicking on "Add to cart" took me directly to a paypal page in (I think) Chinese. Never seen that before...Thanks,Peter

author: armandas
author_rank: Frequent Contributor
timestamp: August 31, 2010, 10:34:04 am
content: Don't know anything about the shop, but they use paypal cart for their e-shop. I wonder whether paypal provides buyer protection in such a case

author: Zlectronic
author_rank: Newbie
timestamp: June 19, 2012, 04:13:51 am
content: Zlectronic.com is very safe on-line shopping by using Paypal. We are parts supplier of Hong Kong.

author: T4P
author_rank: Super Contributor
timestamp: June 19, 2012, 05:44:59 am
content: Quote from: armandas on August 31, 2010, 10:34:04 amQuote from: PetrosA on August 31, 2010, 01:31:35 amWooooww ... and then suddenly the shop decides to pop out on eevblog forums just when Peter mentions them ... Sneaky?

author: codeboy2k
author_rank: Super Contributor
timestamp: June 19, 2012, 06:35:49 am
content: That was freaky. Well, Dave's blog is pretty highly ranked on Google, and pages here in the forum show up pretty quick on google search results.If I was running a business, I'd have my finger on the pulse of the Internet to see who's talking about me. So I'd have auto-searches set up to notify me about people talking about my company.You can get an RSS feed of forum titles too, and their company name is in the title of this thread.And having the company rep on the site is always good, but coming here and saying "trust me, we're ok" is meaningless.

author: johnnyfp
author_rank: Frequent Contributor
timestamp: June 19, 2012, 09:52:21 am
content: You do realise the original post is 2 years old?took them 2 years to respond

author: Mint.
author_rank: Frequent Contributor
timestamp: June 19, 2012, 10:17:49 am
content: Quote from: johnnyfp on June 19, 2012, 09:52:21 amLOL

author: LEECH666
author_rank: Frequent Contributor
timestamp: June 19, 2012, 10:24:24 am
content: LOL indeed.

author: codeboy2k
author_rank: Super Contributor
timestamp: June 19, 2012, 10:46:22 am
content: I don't have a habit of checking the dates of the threads .. I will now.I only saw as far as DaveXRQ's reply.. it's all his fault !

author: T4P
author_rank: Super Contributor
timestamp: June 19, 2012, 11:47:20 am
content: Quote from: codeboy2k on June 19, 2012, 10:46:22 amYes,yes it's my fault

author: LEECH666
author_rank: Frequent Contributor
timestamp: June 19, 2012, 02:18:31 pm
content: Quote from: Zlectronic on June 19, 2012, 04:13:51 amI love this totally unbiased review too.

author: metalphreak
author_rank: Frequent Contributor
timestamp: June 20, 2012, 08:53:27 am
content: Not really a review. It's quite obvious its the store owner or a repMakes good business sense to google your own company and see what customers may or may not be saying.
Interesting use for dead test equipment... - Page 1
Forum section: electronics / general

author: johnboxall
author_rank: Unknown
timestamp: June 20, 2012, 02:20:33 am
content: ... turn them into clockshttp://www.funnypolynomial.com/misc/creative/dmmclock.html

author: EEVblog
author_rank: Unknown
timestamp: June 20, 2012, 03:47:12 am
content: I've thought about doing that many times. Always thought it would be fun.Dave.

author: Unknown
author_rank: Unknown
timestamp: June 20, 2012, 06:23:49 am
content: Inspired now. but what to do with the old clock case!I know!I build turn it into a DIY multimeter.

author: vk6zgo
author_rank: Super Contributor
timestamp: June 20, 2012, 06:41:09 am
content: A lot of older digital clocks look like bench DMMs anyway,so why not buy one of those & cut out the middle man?

author: Chet T16
author_rank: Frequent Contributor
timestamp: June 20, 2012, 07:55:39 am
content: How about a 12bit DAC outputting 0-23. 59 volts to a working DMM

author: codeboy2k
author_rank: Super Contributor
timestamp: June 20, 2012, 08:25:58 am
content: Quote from: Chet T16 on June 20, 2012, 07:55:39 amI recall seeing someone do that already with an arduino or some such, posted the video on youtube of their wonder-creation, than apologized when it's clear that it doesn't actually show accurate time due to using an 8 bit DAC ( or was it 10 bit ? I don't remember) and rounding errors in their math software, and drift and temperature instabilities, etc.
Lunar Heifer Dust - Vist World's Oldest Clock For Just £100m - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: June 20, 2012, 07:09:45 am
content: Greetings EEVBees:--I do not know why things space related, cause reporters to lose all sense of proportion, but they always have and I guess they always will. I remember when Yuri Alekseyevich Gagarin orbited the earth, the TV reporters were yammering on about how; "It's like Columbus Discovering the New World.", when it was more like Homo Erectus putting his toe in a mud puddle. See the below article, from the Financial Times for the latest overblown hype, then, as a cure, go read "The Man Who Sold The Moon" by R. Heinlein.http://www.ft.com/cms/s/0/f5af9e2a-ba21-11e1-aa8d-00144feabdc0.html"Excalibur Almaz will charge wannabe astronauts an average of £100m for a six-eight month journey exploring deep space."--Six to eight months, huh, are the going to walk there? So now the Moon is in Deep Space, or maybe they plan to visit Mars first, go figure.“It is like how private British companies led expeditions to the South Pacific in the 17th century,” said Art Dula, founder of Excalibur Almaz. “We’ve just gone from seafaring to spacefaring.”--Actually, it would be more like rowing across to the Isle of Man in a coracle, for the umpteenth time. Not only haven't they fared anywhere yet, the haven't gotten off the ground yet, and I doubt this particular enterprise ever will."The company also hopes to drive revenues by emblazoning adverts across its space station...including government astronauts from countries like China – to rent the space station."--Build it, and the will come. I smell a TV Reality Series in the making. Please read the entire article, it is a hoot."The mission is to find habitable life in space"Kate McCrae (Yvette Mimieux) From Disney's "The Black Hole" 1979Best RegardsClear Ether
uCurrent sold out at Adafruit - Page 1
Forum section: electronics / general

author: kphannan
author_rank: Unknown
timestamp: June 19, 2012, 03:10:02 pm
content: Congratulations on selling out. I hope the experiment with an overseas distributor is a success. I'm trying to justify getting one....

author: EEVblog
author_rank: Unknown
timestamp: June 20, 2012, 03:52:45 am
content: Thanks.They only ordered 25, so maybe not surprising that they sold out I guess.Another 25 have been ordered and sent.Sending 25 at once is certainly a LOT easier than individually packing and shipping 25 units. It feels goodDave.

author: SgtRock
author_rank: Unknown
timestamp: June 20, 2012, 04:15:44 am
content: Dear Dave:--Sold-out eh? Have been expecting same. As we say in North Florida "Y'all are sh*tting in high cotton now." I read some where (I have forgotten just where), that the ?Current is useful for tracking down shorts, is that correct?"I'm all in favor of the democratic principle that one idiot is as good as one genius, but I draw the line when someone takes the next step and concludes that two idiots are better than one genius."Leo Szilard 1898 - 1964Best RegardsClear Ether