hybridfree/eevblog-posts huggingface dataset:
Anyone keep old EA magazines? - Page 1
Forum section: electronics / general

author: Australianstig
author_rank: Contributor
timestamp: July 13, 2016, 10:47:07 am
content: Hi there from Queensland, I was simply curious to see if anyone had an archive of EA magazines, particularly the add on regulator for battery chargers article from July '97 as I had one of those that was still running in 2010 from being built in 2002 maintaining the same battery for that time as well. Both were still fine when I lost possession of the unit they were built in to and I'd like to recreate that sort of success with a higher current mosfet

author: aargee
author_rank: Frequent Contributor
timestamp: July 14, 2016, 07:11:03 am
content: I have a copy of the Dick Smith kit instructions here too. Just an extract of the 1997 article Wilfred might be alluding to... and it was an SCR, not a MOSFET, BTW.Strangely, Silicon Chip (apparent holders of the EA copyright) don't recommend this circuit be used but point you at a PIC controlled 2008 design. No reason given.

author: CJay
author_rank: Super Contributor
timestamp: July 14, 2016, 07:38:36 am
content: Quote from: aargee on July 14, 2016, 07:11:03 amCynical me suggests that may be because they make a bit of cash from selling the PICs and PCBs?

author: Australianstig
author_rank: Contributor
timestamp: July 14, 2016, 07:48:20 am
content: Quote from: aargee on July 14, 2016, 07:11:03 amAll I should need to find is an SCR with current handling around the 30A mark for my application. The last one I built was the '97 version which had no issues at all that I came up with over the 8 years I had it

author: aargee
author_rank: Frequent Contributor
timestamp: July 15, 2016, 06:31:49 am
content: I still have the original, built into the Arlec charger.Still working well and charges lead-acid batteries just fine, I like it as you can just connect and forget.

author: Australianstig
author_rank: Contributor
timestamp: July 15, 2016, 12:01:56 pm
content: Can anyone suggest a compatible SCR or SCR MOSFET combo to drive the 25A max continuous load?

author: BradC
author_rank: Super Contributor
timestamp: July 15, 2016, 12:35:28 pm
content: Quote from: CJay on July 14, 2016, 07:38:36 amI still buy the mag when I see it on the news stand, but it has been a number of years since I've bought it because there was actually something in there I particularly wanted. I suspect they are (and have been for some time) teetering on the ragged edge of viability and pushing product like that is just another lifeline revenue stream.

author: Australianstig
author_rank: Contributor
timestamp: August 02, 2016, 04:45:44 am
content: How easy is it to parallel SCRs if I'm having hassles getting an appropriately rated one for higher current than 8A?
8X8 Maker Challenge! - Page 1
Forum section: electronics / general

author: ali6x944
author_rank: Frequent Contributor
timestamp: July 31, 2016, 06:18:53 pm
content: Hello Makers, hackers and electronics hobbyists in the 8X8 Maker challenge...Where you will be challenged weekly to make a themed project in an 8X8 piece of dotted prototyping board...The Rules are simple:1)project in an 8X8 piece of dotted prototyping board2)have fun!The theme for this week:AUDIO SYNTHESIZERShttps://youtu.be/gEl1iajQrdhttps://plus.google.com/115108013327841958420/posts/Whe8hfHeBKHNote:please post on YouTube or google+Highest likes is the winerhttps://plus.google.com/communities/115821539968208659639Update:This week's challenge ends on August 7th

author: ali6x944
author_rank: Frequent Contributor
timestamp: August 01, 2016, 06:41:13 am
content: Good luck :-)

author: zapta
author_rank: Super Contributor
timestamp: August 01, 2016, 01:45:31 pm
content: 8x8 inches? Yards? Mils?

author: matseng
author_rank: Frequent Contributor
timestamp: August 01, 2016, 01:56:53 pm
content: I guess it's 8x8 holes...Can multiple pins from different parts be fitted in the same hole?

author: ali6x944
author_rank: Frequent Contributor
timestamp: August 01, 2016, 03:12:08 pm
content: Quote from: matseng on August 01, 2016, 01:56:53 pmCorrect 8X8 holes, and yes of course u could do that, also u are allowed to extend wires to connect to pots, rotary encoders, audio jacks, speakers, motor, monitors, and all sorts of input/output devices....Good luck in the challenge!Please submit your project in google+ or YouTube:https://plus.google.com/communities/115821539968208659639
SpaceX Used booster full flight-duration test burn. - Page 1
Forum section: electronics / general

author: HP-ILnerd
author_rank: Frequent Contributor
timestamp: July 29, 2016, 08:06:07 am
content: Looking through their channel videos, I think this is the first time they've shown a full flight-duration test, much less on a flight-used booster!Fascinating, almost hypnotic how violent the exhaust in the flame pit is.Wonder what the sound level was like by the railing on the flame pit?

author: Kilrah
author_rank: Unknown
timestamp: July 29, 2016, 10:33:21 am
content: Yum, fire!!!Impressive to see the speed and motion of the steam on the top ridges

author: GEuser
author_rank: Frequent Contributor
timestamp: July 29, 2016, 10:54:40 am
content: Nobody had the marshmallows out .

author: Roeland_R
author_rank: Regular Contributor
timestamp: July 29, 2016, 11:12:30 am
content: Think they don't use Volkswagen software..... And greenpeace won't be happy either...?

author: TerraHertz
author_rank: Super Contributor
timestamp: July 29, 2016, 11:39:01 am
content: SpaceX are overlooking a great source of income. Plenty of people would pay good money to have an object of their choice bolted down in the flame pit and subjected to a full burn. Hillary Clinton for instance.

author: larrybl
author_rank: Regular Contributor
timestamp: July 30, 2016, 12:42:20 am
content: I live about 6 miles from there. I get my windows rattled once and a while.

author: XOIIO
author_rank: Super Contributor
timestamp: August 01, 2016, 12:38:10 pm
content: Fuck this is awesome and also depressing because working for these guys would be amazing, but would never happen :/ lol
Electrolytic Capacitor Formula - Page 1
Forum section: electronics / general

author: Voodoo 6
author_rank: Regular Contributor
timestamp: August 01, 2016, 06:51:41 am
content: Greetings,First time posting here. Acknowledging electrolytic capacitor formulas are a trade secret, what do you all think goes into the making of the formula? Thanks in advance, cheers!

author: Rerouter
author_rank: Super Contributor
timestamp: August 01, 2016, 07:22:51 am
content: I will say the 2006 capacitor plauge in computers was from a company leaking an incorrect formula deliberately, and a number of cheaper producers jumping on it

author: Voodoo 6
author_rank: Regular Contributor
timestamp: August 01, 2016, 07:30:10 am
content: The plague is still going on in a much wider scale. Who knows where components are truly coming from these days. I wonder if a gas chromatography machine would reveal the composition?
Chip Shooters - Page 1
Forum section: electronics / general

author: zapta
author_rank: Super Contributor
timestamp: July 29, 2016, 02:52:15 pm
content: I didn't see it discussed much here, mostly conventional and slow pick and place. These shooters are fast! Like a Gatling gun.

author: med6753
author_rank: Super Contributor
timestamp: August 01, 2016, 01:53:04 am
content: My brother maintains, and is an acknowledged expert, of several Fuji's at a device placement facility near Denver, Colorado. They really are that fast and very reliable, as long as they are properly set up and maintained.

author: Brumby
author_rank: Unknown
timestamp: August 01, 2016, 03:24:07 am
content: Now that is brilliant.

author: plazma
author_rank: Frequent Contributor
timestamp: August 01, 2016, 06:19:26 am
content: Those Fuji machines are slow by todays standards but reliable. When I worked with Siemens and Fuji machines the Siemens machines were much faster but required more service during use. The output was about the same because the Fujis just keep running without errors.

author: XOIIO
author_rank: Super Contributor
timestamp: August 01, 2016, 06:30:47 am
content: Holy shit.
Qt creator demo running on Orange Pi - Page 1
Forum section: electronics / general

author: lilos
author_rank: Contributor
timestamp: July 07, 2016, 09:56:19 pm
content: This is Qt creator demo running on Orange Pi one.Qt will be ready for use and included in our first public image. Qt give you easy way to develop native c++ application on this cheap arm board and you don't need another PC, you can simply run Qt creator and start developing your program.

author: lilos
author_rank: Contributor
timestamp: July 09, 2016, 01:50:09 am
content: Qt serial driving pic micro over serial port, Qt server app with udp remote on android phone also made with qt.Serial communication use AT like commands to drive micro. When micro receive command from server it execute command and then replay to server that command is executed.If remote is enable server send udp like AT command to remote phone app and status is displayed.

author: TAMHAN
author_rank: Frequent Contributor
timestamp: July 30, 2016, 11:47:37 am
content: Hello,may I ask which packet you are using to provide the Qt base framework!
Slow lightning / lichtenberg in wood - Page 1
Forum section: electronics / general

author: cybermaus
author_rank: Frequent Contributor
timestamp: July 27, 2016, 02:37:49 pm
content: This looks nice. I wonder how much volt at how much current this needs.Must be some current, to char the wood. Probably a very dangerous device.

author: Kilrah
author_rank: Unknown
timestamp: July 27, 2016, 02:45:12 pm
content: Beautiful!!

author: matseng
author_rank: Frequent Contributor
timestamp: July 27, 2016, 05:10:29 pm
content: From what I seen earlier they are using a standard MOT for this, so probably like 2KV at 0.5A or thereabouts... Not particularly healthy to play with unless you're very careful and know what you're doing.

author: Halcyon
author_rank: Unknown
timestamp: July 29, 2016, 10:15:36 am
content: It seems a lot of artists use a neon transformer which can be up to 15KV.This is a bit of a tutorial:
Avnet outbids Daetwyler in buying Premier Farnell - Page 1
Forum section: electronics / general

author: bitwelder
author_rank: Super Contributor
timestamp: July 29, 2016, 05:59:34 am
content: Almost at the last minute, Avnet comes forward to buy Premier Farnellhttp://www.theregister.co.uk/2016/07/28/avnet_sees_daetwylers_bid_for_pislingers_and_raises_it_to_868m/

author: JPortici
author_rank: Super Contributor
timestamp: July 29, 2016, 06:02:01 am
content: "Farnell, distributor of the raspberry pi"
Transmission lines - a visual explanation - Page 1
Forum section: electronics / general

author: android
author_rank: Regular Contributor
timestamp: August 03, 2016, 11:12:27 am
content: Eugene Khutoryansky provides another excellent (as usual) visual explanation for the mathematically challenged like mehttp://youtu.be/ozeYaikI11g

author: Kalvin
author_rank: Super Contributor
timestamp: August 03, 2016, 11:36:14 am
content: The Dr. J.N. Shive's lecture also worth looking:

author: android
author_rank: Regular Contributor
timestamp: August 03, 2016, 01:53:27 pm
content: Thanks Kalvin,It's refreshing to see a "vid" that is straight to the point without all the meandering that is characteristic of the youtube era. Good find. BTW, 1959 was an excellent year IMHO.

author: whalphen
author_rank: Regular Contributor
timestamp: August 03, 2016, 10:56:40 pm
content: I especially enjoyed Dr. J.N. Shive's video. Thanks for posting!

author: hamdi.tn
author_rank: Frequent Contributor
timestamp: August 04, 2016, 12:29:50 am
content: wow ... i hope i can show this to my high school and university professor , just to let them know how useless they are. i did read hundreds of documents about waves and reflection ... i can totally say this one goes directly to the point and it summarize it. well this was not a wasted 30 minutes of my life

author: b_force
author_rank: Super Contributor
timestamp: August 04, 2016, 11:01:04 am
content: I think best for most people, is to translate everything to mechanics, because it is more visual.This is called analogy between electronics and mechanics.A capacitor behaves like a spring, the mass of a object is like an inductor and a damper works like a resistor.https://en.wikibooks.org/wiki/Engineering_Acoustics/Electro-Mechanical_AnalogiesBut there are a million other resources to be found on the web.The beauty of this is with control theory it doesn't matter if you're talking about train mechanics, an electrical circuit and even certain chemical processes.It all has similar behavior with very similar formulas.(and yes, professors have a tendency to make everything overly complicated, boring and even missing the whole point)
[OT] Remove scratches from plastic helmet - Page 1
Forum section: electronics / general

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: July 28, 2016, 12:49:02 pm
content: As I remember seeing a few threads on equipment repair where people removed scratches from test equipment panels I thought it wouldn't hurt to ask around here.I have this helmet which is a memento from a visit I made to one of manufacturing plants of my current employer. I dropped it in a parking lot though and it gained a few scratches...Can I do anything to repair / reduce the scratches? Maybe use a hot air gun after sanding it with a very fine sand paper?See picture.The helmet is a normal safety helmet made by MSA in HDPE.(similar to this:http://us.msasafety.com/Head-Protection/Industrial/Helmets/Vanguard%26trade%3B-Lateral-Protective-Cap---Type-II/p/000060001000001000).

author: b_force
author_rank: Super Contributor
timestamp: July 28, 2016, 01:29:17 pm
content: Sanding and polishing would do the trick fine.Why do you want to remove the scratches actually??

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: July 28, 2016, 02:11:15 pm
content: Thanks! Any tips on how to do the polishing?The helmet is a souvenir from the visit, I would like it to look "as new" if possible.

author: rdl
author_rank: Super Contributor
timestamp: July 28, 2016, 04:50:30 pm
content: HDPE does not respond well to sanding and polishing. It's kind of "rubbery" but not very thermoplastic. You can try though.

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: July 28, 2016, 05:28:45 pm
content: hum... ok, thanks for the tip rdl. I will maybe try sanding it a little bit to see how it reacts - if not very well then I will just leave it as is.

author: noidea
author_rank: Unknown
timestamp: July 29, 2016, 07:43:05 am
content: Those scratches are more than just superficial, even if you could sand and polish them out the surface will be flattened where they were and you will always notice it as it will reflect light at a different angle to the surrounding surface.PS that doesn't look like dropped, more like played football with around the car park

author: dexters_lab
author_rank: Unknown
timestamp: July 29, 2016, 08:15:59 am
content: you'll need to sand it down with a coarse paper to get the deep scratches out. Then progress onto finer and finer sandpapers.Once you have a nice smooth but matt surface, switch to toothpaste with a cloth and it should bring the gloss back after a lot of polishing

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: July 29, 2016, 01:34:45 pm
content: I took the picture with light in an angle that maybe makes the scratches seem deeper than they really are.But I'm starting to get a feeling I should just let it be... I may make it worst than it is!
Shrink Ray - Page 1
Forum section: electronics / general

author: Zbig
author_rank: Frequent Contributor
timestamp: July 27, 2016, 07:59:51 pm
content: Got myself a dash cam today. Turns out it comes with a shrink ray generator! This could come handy, anyone knows how to activate that? There's no dedicated button for it. Does it work on ricers? Potholes? So many questions.

author: Zero999
author_rank: Super Contributor
timestamp: July 28, 2016, 08:15:02 am
content: Sounds like Chinglish to me.Was it very cheap by any chance?

author: Zbig
author_rank: Frequent Contributor
timestamp: July 28, 2016, 11:48:34 am
content: Quote from: Hero999 on July 28, 2016, 08:15:02 amYup, that's some Chinglish for youIt wasn't expensive - I got a deal for what amounts to some $75 USD where I live. I'd say Xiaoyi aspires to the status of a somewhat premium Chinese brand. Or just represent what could hopefully be a new trend among Chinese companies. And by that I mean a webpage that doesn't make you want to cry and laugh at the same time (http://www.yitechnology.com/), decent packaging, etc. They apparently made a decent action cam (competing with GoPro in the bang-for-buck department) and more recently - a dash cam. It even has its "*gate" - there are numerous user reports of the picture quality degrading with increasing temperature. I'll verify that in few days.
Working "Lost in Space" Analog Computer Replica - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: July 26, 2016, 07:17:01 pm
content: How can it be analog if there are flashing lights showing its operation? I always thought that blinkenlights were a digital thing.

author: rstofer
author_rank: Super Contributor
timestamp: July 27, 2016, 12:25:13 am
content: I don't know where 'analog' comes in, the unit is based on a Burroughs B205 digital computer.It simply doesn't have the parameter potentiometers required for an analog computer nor does it have a patchboard.http://www.cs.virginia.edu/brochure/images/manuals/b205/central/central.htmlversushttps://www.bing.com/images/search?q=analog+computer&FORM=IARRTH&ufn=analog+co

author: Brumby
author_rank: Unknown
timestamp: July 27, 2016, 02:41:58 am
content: 1. The Burroughs B205 provided nothing more than the carcass - principally the front panel. Everything else is from the prop department.2. The word 'analogue' is used once in that clip - and it is not used accurately.They talk about the powering and switch operation that drives the lights and they should have said 'electro-mechanical'. The intent, as I saw it, was to make the distinction that the light patterns were NOT created by digital circuitry ... and they just used the first word that came to mind. It wasn't the technically correct word, but in unscripted conversation that sometimes happens. Dave has done it - and we understand what he meant anyway.It's no big deal. Really.

author: Seekonk
author_rank: Super Contributor
timestamp: July 27, 2016, 01:00:14 pm
content: I have a fondness for "Lost in Space". My wife bought a box of Christmas tree lights in a box for $3 at a flea market. The box was Robbie the Robot. I sold it on ebay for $200 + shipping.
Neet phone with thermocamera  - Page 1
Forum section: electronics / general

author: daqq
author_rank: Super Contributor
timestamp: July 24, 2016, 08:23:13 pm
content: This looks ideal for work related traveling, particularly for field service people:http://www.catphones.com/en-gb/phones/s60-smartphone

author: Kilrah
author_rank: Unknown
timestamp: July 24, 2016, 08:45:21 pm
content: There are threads about it already:https://www.eevblog.com/forum/thermal-imaging/caterpillar-s60-phone-with-integrated-thermal-camera/https://www.eevblog.com/forum/chat/caterpillar-s60-smartphone-announced-with-ir-camera-built-in

author: XOIIO
author_rank: Super Contributor
timestamp: July 25, 2016, 12:06:59 am
content: Yeah the cat S60 looks awesome, but spec wise it's a tad underwhelming if you don't include the thermal camera.

author: daqq
author_rank: Super Contributor
timestamp: July 27, 2016, 08:17:08 am
content: QuoteYeah, and it does not even include a thermal front camera for thermal selfiesQuoteWhoops, didn't notice.
What are these called? - Page 1
Forum section: electronics / general

author: TerraHertz
author_rank: Super Contributor
timestamp: July 26, 2016, 01:43:33 pm
content: See pic. Darnit, I thought these were called cotter pins, but ebay and Wiki use the term cotter pin to describe what I've always called split pins.I need the right word, to find some longer ones of these online. Split pins won't do. Has to be these, which are springy hard steel that you press into a slightly under size hole.This is for securing the head of a medium size sledge hammer.

author: R_Gtx
author_rank: Regular Contributor
timestamp: July 26, 2016, 01:48:05 pm
content: Tension pins or roll pins

author: TerraHertz
author_rank: Super Contributor
timestamp: July 26, 2016, 02:08:31 pm
content: Ah ha. The magic google word. Tension pin, spring, roll or C pins. Thanks.Edit: This is for that rock removal project I mentioned inhttps://www.eevblog.com/forum/chat/what-did-you-buy-today-post-your-latest-purchase!/msg929403/#msg929403It's going well, faster than I expected.First pic is original rocks; red line all that's left now. (A bit after the last pic below.)Two or three more trips, and then I'll have the job of moving all the rubble. Whoopee.

author: GEuser
author_rank: Frequent Contributor
timestamp: July 27, 2016, 07:42:14 am
content: Always know as a Roll pin my way , cotter pins also were split pins .As you now have found out ..
Electrical safety question wrt special relays - Page 1
Forum section: electronics / general

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: July 27, 2016, 01:48:41 am
content: Hi all, I'm pretty sure (house) electrical safety codes around the planet all state somewhere "don't modify things that plug to the mains, it voids certifications and then your insurance is void"OK, so I have this old GE Low Voltage switching system that has these special latching relays that are now failing. They are 50 years old and harder to find.When they fail, they just make a loud buzzing noise and don't change states.OK, so I took a broken one apart and noticed there's nothing really wrong with it, it's probably just a minor mechanical alignment issue because after I put it together it latched back and forth properly.Now to take it apart I had to drill out three strong brass rivets that hold it together. I think that constitutes a "modification"...But wait!If I take a rubber mallet and gently tap the metal plate until it aligns again,without drilling out the rivets, well, since that only changes the position of the metal plate within the mechanical tolerance of the original design, as well as being on the low voltage side only, shouldn't that be fine?Oh, yeah, here's the beast:You see, that metal housing contains two 24V solenoids. The black plastic base contains the buckling contact for the 120VAC side.There is an insulating wafer between the plastic and metal parts.So... if I just come in with a flat blade screwdriver and gently tap on the metal base to slightly shift things around until it works again, surely this is still safe?
T-SHIRTS ... Wild, whacky, whimsical or weird - What have you seen? - Page 1
Forum section: electronics / general

author: Brumby
author_rank: Unknown
timestamp: July 25, 2016, 07:29:45 am
content: My son bought this T-shirt on the weekend. Heisa stirrer.....

author: RobK_NL
author_rank: Frequent Contributor
timestamp: July 25, 2016, 09:31:06 am
content: I like that one, would wear it myself.When I was younger, so much younger than today, I used to have a shirt that read:"A Prayer:Oh Lord,Help me to keep my big mouth shutUntil I know what I'm talking about."Words to live by in this day and age

author: LA7SJA
author_rank: Regular Contributor
timestamp: July 25, 2016, 12:12:18 pm
content: My new favorite T-Shirt:Johan-Fredrik

author: edpalmer42
author_rank: Super Contributor
timestamp: July 25, 2016, 03:34:17 pm
content: My brother-in-law bought me a shirt that reads:"If the right side of your brain controls the left side of your body, then lefties are the only people in their right minds"In other words, "9 out of 10 people reading this shirt are nuts!"Gotta have stones to wear a shirt like that!Ed

author: Neilm
author_rank: Super Contributor
timestamp: July 25, 2016, 06:44:16 pm
content: One of the guys in the office wears this one

author: Iwanushka
author_rank: Frequent Contributor
timestamp: July 25, 2016, 06:50:05 pm
content: Quote from: edpalmer42 on July 25, 2016, 03:34:17 pmNeed to order one of these!

author: Kjelt
author_rank: Super Contributor
timestamp: July 25, 2016, 06:59:22 pm
content: this one is cool

author: RobK_NL
author_rank: Frequent Contributor
timestamp: July 25, 2016, 07:11:17 pm
content: Quote from: Kjelt on July 25, 2016, 06:59:22 pmBy the looks of it, she's a bit cold ...

author: Cubdriver
author_rank: Unknown
timestamp: July 26, 2016, 07:34:40 am
content: I like the 'Revolt Against the Solid State' one I got from Tubedepot, though there may well be many here that wouldn't appreciate it as much as I do...-Pat

author: GEuser
author_rank: Frequent Contributor
timestamp: July 26, 2016, 11:24:36 am
content: Quote from: Kjelt on July 25, 2016, 06:59:22 pmThat's the one the Mars people will wear when they get there (underneath 3 feet thick suit mind you) .

author: SL4P
author_rank: Super Contributor
timestamp: July 26, 2016, 12:32:38 pm
content: 1. To save time later, let's just assume I know everything.2. Everyone's working... but nobody's thinking!

author: suicidaleggroll
author_rank: Super Contributor
timestamp: July 26, 2016, 03:04:05 pm
content: This one re-blows my mind every time I see it:And just for fun:
driver for camera - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 25, 2016, 02:07:20 am
content: hi my mate gave me this camera todayhttp://winaittechnologies.sell.everychina.com/p-96319842-winait-s-mini-pen-type-100k-pixels-digital-cameras-24-bit-jpeg-file-format.htmlbut im having trouble finding the driver for it can anybody help?i think the camera is too old for windows 7 drivers but i do have an xp laptop if there are drivers for xp

author: bktemp
author_rank: Super Contributor
timestamp: July 25, 2016, 06:45:06 am
content: I had a similar looking camera many years ago. It used an STV0680 chipset.You also need the software for downloading the images.

author: XOIIO
author_rank: Super Contributor
timestamp: July 25, 2016, 07:22:29 am
content: Damn, it's been a long time since I've seen something that wasn't rated in megapixels, even if it;s .2 or .3 lol

author: Halcyon
author_rank: Unknown
timestamp: July 25, 2016, 08:51:18 am
content: Have you tried searching for the Device Vendor and Device ID values (you should be able to view these in device manager). It's not uncommon for these cheap Chinese devices to be called all sorts of things.

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 26, 2016, 02:18:13 am
content: Quote from: Halcyon on July 25, 2016, 08:51:18 amthanks i was able to find it once i looked up the Device ID values thx

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 26, 2016, 02:24:25 am
content: took a test photo with it yesterday rez is low but photos look ok at such a low rez 352x288 HQ but would never use LQ as its only 176x144so i will probably just use this camera to take random photos or if im just mucking around

author: Halcyon
author_rank: Unknown
timestamp: July 26, 2016, 09:32:45 am
content: I'm glad you were able to get that working. Although I'm not sure what you would use it for? The image quality is pretty awful. Even the camera in my old Nokia 6230 had a resolution of 1280x1024 and that phone is now 12+ years old. This camera you're using also seems to suffer from "cheap image sensor" issues (probably not surprisingly) like the Apple iPhone did, where you'd get a green or purple blob in the middle of the image in high brightness scenes.

author: Kilrah
author_rank: Unknown
timestamp: July 26, 2016, 11:06:45 am
content: That was about the standard "early cheapo digital camera platform" in early 2000s. My first digital camera was similar albeit in 640x480 and with a color LCD (playback only) back in 2002 (Konica eMini D,http://www.imaging-resource.com/EVENTS/PMAS01/982704202.html, received for birthday)Used it probably for one year, by then people were already getting rid and giving away much better stuff so it was completely obsolete, got a 2MP HP for free from someone (which was also pretty shitty, but still a lot less so).Bought my first own digital camera in 2004, a nice 4MP Minolta Dimage G400 that was pretty cheap but trumped many of the others that were fully engaged in the stupid MP race that was all the rage back then.
SiFive introduce First Open Source RISC-V SoCs - Page 1
Forum section: electronics / general

author: lilos
author_rank: Contributor
timestamp: July 12, 2016, 02:08:22 pm
content: http://www.iot-dev.net/full.php?ar=51

author: lilos
author_rank: Contributor
timestamp: July 26, 2016, 12:03:11 am
content: New SiFive video!
What is the biggest SMPS you ever built/designed? - Page 1
Forum section: electronics / general

author: MorRobotz
author_rank: Newbie
timestamp: July 23, 2016, 05:20:43 pm
content: I'm working on a little personal project (home made inverter welder, don't judge me). I figured I would ask you all and the grey beards what the biggest single rail supply you ever built/designed was, listen to some war stories.

author: tszaboo
author_rank: Super Contributor
timestamp: July 23, 2016, 08:13:27 pm
content: 50A 3Vish DC-DC converter. Then 80 of them was connected in parallel. Well, simply put, it was more complicated. So... That is 4000A and 12000W.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 23, 2016, 08:17:24 pm
content: Does an induction heater count, if it's not making a DC output?Size doesn't really thrill me; it's just a matter of throwing more together. (Well, give or take the "complicated" NAND is referring to.) In this case, it was modules of 150kW IGBT bricks, wired in parallel for whatever nameplate rating was required.Tim

author: NiHaoMike
author_rank: Super Contributor
timestamp: July 25, 2016, 02:54:31 pm
content: 2000W "smart" inverter. It's a modified Harbor Freight inverter with a DSP to vary the output frequency and voltage according to the load. (Mostly V/Hz soft start that's very helpful for starting motors.)Although I do have 4 12V 750W modules that could be easily combined to make a 3000W 48V supply if I had a need for one.Take a look at those building their own EVs for some really large DIY inverters.
Forums not accessible from my Samsung Galaxy... - Page 1
Forum section: electronics / general

author: splin
author_rank: Frequent Contributor
timestamp: July 23, 2016, 03:57:27 am
content: .... i9000S - the first model, (Gingerbread, 2.6.35.7.). Classified as steam-punk by my kids.Ok. its a bit old with the odd security vulnerability or two, or hundreds, and I do have another phone so its hardly the end of the world.The standard browser comes back with an "The page contains too many server redirects" error. This isn't new, its been happening for at least a few months. Another victim of over aggressive advertising perhaps? Time to ditch the phone completely?

author: Monkeh
author_rank: Super Contributor
timestamp: July 23, 2016, 04:13:16 am
content: Or just upgrade the firmware.

author: retiredcaps
author_rank: Super Contributor
timestamp: July 23, 2016, 04:31:00 am
content: Looks like you can get 5.1 OmniROM for your phone. I just through a similar procedure for an older tablet.http://forum.xda-developers.com/galaxy-s-i9000/i9000-development/rom-t3054101The usual caveats apply.edit: The tools used to upgrade are usually written for Windows. I tried with Windows 10 and found it a frustrating/futile exercise for 2 days. In the end I used Windows 7 and was done in 20 minutes. Normally, I run Lubuntu, but there are usually no tools written for linux.Additionally, a lot of these 3rd party ROMs are "one time" deals. After they are released, it is rare that they are updated with the latest Android monthly security patches. Running 5.1 is more secure than 2.6, but one could argue that is a false sense of security.As such, I don't use any "smart phone" for any banking, email, etc. In addition, I usually create a "throwaway" email for these devices.

author: rob.manderson
author_rank: Regular Contributor
timestamp: July 23, 2016, 03:49:02 pm
content: Quote from: splin on July 23, 2016, 03:57:27 amI get exactly the same error on a Nexus 7 running Android 6 with the latest security updates. No, I don't have a solution - just pointing out that it's not unique to Gingerbread,

author: splin
author_rank: Frequent Contributor
timestamp: July 24, 2016, 04:17:49 pm
content: Quote from: rob.manderson on July 23, 2016, 03:49:02 pmInteresting - that prompted me to have a look around - clearing history and cache as someone suggested didn't work but using "Reset to default" in the browser settings did. So not a problem with the eevblog server after all.
Back to the Future  - Page 1
Forum section: electronics / general

author: microcircuit
author_rank: Newbie
timestamp: November 13, 2015, 07:10:04 pm
content: Knowing Dave's interest in Back to the future I thought that this would be of interestMy apologies if you have already seen it.MARTY: Autonomous, Electric Delorean Can Do DonutsStanford University engineers have built an autonomous Delorean capable of precise drifting at large angles in order to study how cars perform in extreme situations, which could help guide the development of autonomous safety protocols. The car is nicknamed MARTY (Multiple Actuator Research Test bed for Yaw control).Link:www.techbriefs.com/tv/autonomous-MARTY

author: ADC-1995
author_rank: Regular Contributor
timestamp: May 05, 2016, 03:28:25 am
content: Anyone shopping for a Flux Capacitor:http://www.thinkgeek.com/product/1dbd/

author: station240
author_rank: Unknown
timestamp: May 05, 2016, 04:08:21 am
content: Quote from: ADC-1995 on May 05, 2016, 03:28:25 am"Shipping restrictions: We cannot ship this item outside of the U.S., and Canada"Bah, typical American business, can't even take my money.

author: aargee
author_rank: Frequent Contributor
timestamp: May 05, 2016, 11:28:18 am
content: I don't think much of the control system, the way the steering is going berserk within its control function to maintain a continuous drift.But .. what the heck.. I'm an amateur. :-P

author: Delta
author_rank: Super Contributor
timestamp: May 06, 2016, 02:19:21 am
content: Quote from: aargee on May 05, 2016, 11:28:18 amA bit too much gain on that control loop!

author: ADC-1995
author_rank: Regular Contributor
timestamp: July 28, 2016, 02:25:42 am
content: Okay. its an attempt.... Self Lacing shoe laces..... that's all I can say

author: calexanian
author_rank: Super Contributor
timestamp: July 28, 2016, 03:58:58 am
content: Thats cool. At first I was, ahem, " Concerned" about them using a DeLorean cause lets face it. They are pretty much crap as far as cars go. I have driven in one and they fall somewhere between a Toyota Tracel and a Volvo that is in the act of breaking down performance wise. Fortunately they did the sensible thing and throw most of what makes it move away and built a purpose built car upon which they set a DeLorean body to make look interesting. Also they reinforced the frame.They are well known as being what has been described as "Floppy" and having the structural rigidity of a fuzzy bunny slipper.Fun clip.
Another scam post - Page 1
Forum section: electronics / general

author: DTJ
author_rank: Super Contributor
timestamp: May 15, 2016, 07:50:16 am
content: It's a shame gullible and desperate folk get sucked in by this BS.I especially like the pic of the digital 24MHz crystal.http://www.gumtree.com.au/s-ad/deagon/other-sports-fitness/-the-ultimate-rife-machine-/1112454182Edit: The manufacturer is probably making a nice profit too:http://rifedigital.com/order/

author: rolycat
author_rank: Super Contributor
timestamp: May 15, 2016, 09:17:25 am
content: The manufacturers of these devices look like a bunch of unscrupulous scumbags, and their users are succumbing to what Richard Feynman memorably described as "Cargo Cult Science".However,recentresearchseems to suggest that although there is no chance that these quack devices will ever work and Royal Rife's ideas were undoubtedly flawed, hemighthave had a glimpse of something real.Plus, the item being sold seems like it could be a vaguely useful sweep signal generator. Got to be worth five bucks or so

author: hepcat
author_rank: Newbie
timestamp: July 23, 2016, 07:20:21 pm
content: Please don't associate these types of devices with anything Rife said or did. The internet is saturated with misinformation of Rife's work, and the criticisms are based on this misinformation. You can read a brief introduction to the subject here:http://riferesearch.org/

author: shadow_2609
author_rank: Contributor
timestamp: July 23, 2016, 10:18:25 pm
content: Just... wait a second... let's say that we have a real sweaty body and our skin resistance i 1k (i'm guessing really sweaty, outside layer of the skin, frequency about 10khz because, you know more frequency less resistance), for Ohm's law I=V/R == 16.5/1000=0.016A = 16mA ... why in the name of (insert name here) would you need 4,5 A? Do you need to drive a motor? I know, electrostatic can reach peaks of 8 A of current for short amount of time... but we are talking 16.5 V not 10kV... am I missing something? Because we are talking about 16.5 volts @ 4.5A in output, I read about strap, so I think this thing might output current into you body or something like that... and I just read their website an i am like...
what should i save my money for? - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 23, 2016, 06:24:11 am
content: hey guys i seem to be an impulse buyer i see something i like at a cheap price and i will buy itbut when i do get the items most of the time i use it once or twice and that's about itlast item i got was a really nice projector i got it for like 61.23nzd as i had points on the site and used them to get a big discount but i only used it once but don't really have anywhere to set it up so i just put it up on facebook for sale and got offered $150nzdi want to try save the money for something but its hard when i get payed online via paypal every month like 80nzd i seem to want to spend it as soon as i get it and always go looking for cheap items

author: tautech
author_rank: Super Contributor
timestamp: July 23, 2016, 06:27:52 am
content: I'm sure I can tempt you with something.
QuickClique - Page 1
Forum section: electronics / general

author: vlad777
author_rank: Frequent Contributor
timestamp: July 25, 2016, 07:59:32 am
content: Hello,I have found out in this video that finding cliques is an unsolved problem.Well I have made a program that finds them in polynomial time.Maybe I didn't understand something , please someone set me strait.Please try out my program, it is in the attachment.You can read the QuickClique.cpp for explanation and source code.Many thanks.http://extraimago.com/images/2016/07/25/QuickClique.jpgEdit:It has about O(m^4) complexity where m is the number of edges, andnumber of edges is n choose 2 so O( (n C 2)^4 ) complexity.(n is number of nodes)
Who the hell was Henry Sutton?  - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: July 21, 2016, 05:12:47 am
content: I have heard of him but just enough to know I wanted to know more. I saw this video on youtube channel "State of Electronics" yesterday. In it I learned his great granddaughter is finally researching and writting a book telling the story of this fascinating man. She is seeking funds to make the project possible. I thought people here would also find him interesting and may want to help. You can at this link,https://www.gofundme.com/27w2b4k

author: German_EE
author_rank: Super Contributor
timestamp: July 22, 2016, 06:54:14 pm
content: Well, from the Wikipedia page he looks like a man who could have given Thomas Edison a run for his money:https://en.wikipedia.org/wiki/Henry_Sutton_%28inventor%29Note, there are a lot of Henry Suttons.

author: JacobPilsen
author_rank: Regular Contributor
timestamp: July 22, 2016, 09:18:15 pm
content: https://en.wikipedia.org/wiki/Jára_Cimrmanhttps://cs.wikipedia.org/wiki/Artur_Kraus
Farnell Delivery Charge Dilema - Page 1
Forum section: electronics / general

author: aalnuaimi
author_rank: Newbie
timestamp: July 22, 2016, 04:18:29 pm
content: This topic might not relate to most of the users here but here we go.I've ordered parts from farnell and in the checkout window it shows that there are no delivery charges. However When the invoice was sent via email. It turns out they added delivery charges [ UPS ]. When i checked my debit card. it seems that they have not taken any money for delivery. instead they only withdrew the money for the parts. I've received the parts and the UPS delivery guy did not mention delivery charges.I've contacted farnell and they claimed that " Shipping is charged to the UAE & costs depend on Weights & dimensions. "Does anyone have any experience with this? Will they withdraw shipping charges at a later date? The order seems to be "completed" on their website. And my bank account shows no pending transactions from farnell. What is going on?-Abdullah Alnuaimi
Lasercutting/Engraving Service in Germany for one off enclosure of plywood - Page 1
Forum section: electronics / general

author: TrickyNekro
author_rank: Frequent Contributor
timestamp: July 20, 2016, 07:57:55 am
content: Hello,I need to build an enclosure for a project of mine and I need to cut some plywood for the project,do you know of any company or even makerspace (around Bremen though) that can handle it?It´s a 2D cut of course and I´d like to be using 4mm plywood for that, with a max cutting surface of 300mm x 350mmTo tell you the truth I´d like to keep in on the cheap side, but not awful cheap, just considerable.Of course the service doesn´t have to be in Germany, just to deliver to Germany and even better for me would beto give my money to a local makerspace or anything similar when I can be reassured that they can handle itThanks in advance,Lefteris

author: German_EE
author_rank: Super Contributor
timestamp: July 20, 2016, 08:41:49 pm
content: http://fablab-bremen.de/The site is under construction but some of the links may be useful. Also tryhttp://www.fablab-bremen.org/fablearn-europe/
sony mavica  - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: October 06, 2015, 08:20:03 am
content: http://www.ebay.com/itm/37mm-2-0X-TELE-Telephoto-Lens-for-Digital-Camera-2X-37-/220515852472?hash=item3357c4e0b8would this lens fit on a sony mavica fd200

author: crispy_tofu
author_rank: Super Contributor
timestamp: October 06, 2015, 10:12:32 am
content: Quote from: sony mavica on October 06, 2015, 08:20:03 amIt looks like it might, this link:http://www.amazon.com/Telephoto-Conversion-Mavica-MVC-CD350-FD200/dp/B000I6JXIQconfirms that the FD200 has a 37mm front thread, which is what the eBay lens also has.Maybe someone that has more experience can chime in, I'm not too sure.

author: sony mavica
author_rank: Frequent Contributor
timestamp: October 06, 2015, 10:51:04 am
content: thanks

author: sony mavica
author_rank: Frequent Contributor
timestamp: October 07, 2015, 10:24:53 am
content: im going to buy it tomorrow i think but can somebody confirm it will fit

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 20, 2016, 01:51:52 am
content: still looking at getting a lens for this camera not sure if that will fit
Circuit Theory Study materials - Page 1
Forum section: electronics / general

author: MrOmnos
author_rank: Frequent Contributor
timestamp: July 19, 2016, 05:43:07 pm
content: Hi guys! I have Circuit Theory exam in 2 days and I have studied absolutely nothing. I can do the Nodal and Mesh analysis which is the beginning of the course and covers very few marks. But I am struggling with transient analysis part. I don't know what initial conditions means. How to identify first order or second order circuits. I basically know nothing. I tried some YouTube videos but I couldn't find any which teaches step by step procedure of solving these circuits. Please help me. Where do I find materials? Books, videos anything will work. I just wanna know how to solve the circuits since 90% of the question involve solving circuits. I can learn the theory in detail after the exam.
Phantom v2511 camera 343,000 fps - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: July 24, 2016, 01:05:49 pm
content: https://youtu.be/xbuvcQrAOSk

author: chris_leyson
author_rank: Super Contributor
timestamp: July 24, 2016, 02:33:34 pm
content: Wow, thanks Homer J, that was amazing watching the cracks propagate, the spalling from the top rounded edge and the way handle broke up. The spalling would generate very small razor sharp glass particles and everything else broke up into reasonably large chunks. I think it comes down to annealing out the built up stresses in the manufacturing process, probably injection molded these days. It's good material science, how does your product behave under extreme stress conditions, now you can see it on camera. Same applies to ceramics, my dad had a friend renovating an old house, he didn't want to take a ceramic toilet bowl out in one piece because it was too heavy so he hit with a sledge hammer. Big mistake, razor sharp schrapnell everywhere, he was lucky.One hell of an image sensor, 28um pixel size, 25,600 fps at 1280x800 so thats 26Gpixels/s or 314Gbits/s at 12 bit resolution, RGB444 maybe ?. The camera would make an interesting teardown, how do you get that much data out of a chip ? Apparently been replaced by the v2512 with a lot more memory.

author: amyk
author_rank: Super Contributor
timestamp: July 24, 2016, 03:07:12 pm
content: Quote from: chris_leyson on July 24, 2016, 02:33:34 pmLots of parallelism. Mike has (had?) this early unit which uses 16 channels of serial data:http://www.electricstuff.co.uk/ektapro.htmlA lot of the CPU interconnect buses are now around that bitrate too:https://en.wikipedia.org/wiki/List_of_device_bit_rates

author: daqq
author_rank: Super Contributor
timestamp: July 24, 2016, 06:25:23 pm
content: Thanks for the video! Interesting!QuoteIf you are into that stuff, you might like this as well:https://youtu.be/xe-f4gokRBs?t=167
SMILE:  PDP-11 Bus grant card - Page 1
Forum section: electronics / general

author: SL4P
author_rank: Super Contributor
timestamp: July 21, 2016, 02:14:02 am
content: I spotted this on FB - I had to repost here, as it's worth a smile!PDP-11 bus grant card used during maintenance.

author: Brumby
author_rank: Unknown
timestamp: July 21, 2016, 03:45:31 am
content: That's worth aLOL.

author: edpalmer42
author_rank: Super Contributor
timestamp: July 21, 2016, 03:47:40 am
content: Dinosaurs stick together.
What Happened To The Signal Path Blog? - Page 1
Forum section: electronics / general

author: AF6LJ
author_rank: Unknown
timestamp: July 17, 2016, 04:41:13 pm
content: No new updates in something like four months, what happened?Does anybody know?TSP Blog was one of my very favorite blogs, always good stuff and a joy to watch..

author: Kilrah
author_rank: Unknown
timestamp: July 17, 2016, 04:43:03 pm
content: https://www.eevblog.com/forum/other-blog-specific/news-about-the-signal-path/