hybridfree/eevblog-posts huggingface dataset:
smtmax pick and place - Page 1
Forum section: electronics / general

author: kozlojak
author_rank: Contributor
timestamp: January 13, 2014, 12:37:04 pm
content: Has any one heard of smtmax? we are looking for a low cost pick and place for low volume production at my company. the units look ok on paper, but I can't find any 3rd party information about them. Or can anyone recommend a decent, low cost, low volume pick and place machine.http://www.smtmax.com/detail.php?id=246http://www.smtmax.com/detail.php?id=192Seeing pages like this one(http://www.smtmax.com/info.php?act=Service) that link to sites to buy replica watches, do not make me feel good about them.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: January 13, 2014, 12:44:34 pm
content: This looks like one of the more promising low-end P&P machines - I belive price is in the $20K regionhttp://www.mechatronika.com.pl/content/view/21/4/lang,en/

author: acarpenter
author_rank: Contributor
timestamp: January 20, 2014, 02:04:10 pm
content: try ebay?
Datasheet for Sony STR-V3 - Page 1
Forum section: electronics / general

author: MrAureliusR
author_rank: Unknown
timestamp: January 22, 2014, 04:17:12 am
content: This is the first datasheet/service manual that I've ever scanned in. I used a program called FastStone Image Viewer to make the PDF... I was actually surprised how well it worked. I've always known creating PDFs for free is hard because Adobe really wants you to buy their software..Anyway, I originally did this for a user here on the forum but I figured I may as well give back to all the scans that people have provided that I've used. Is there a way I can get this put onto one of the common datasheet/service manual websites? Or does anyone else have any recommendations?Also, the steps for calibrating the receiver section -- would those be specific to this unit or applicable to most receivers of the era (assuming you identified the trimpots and variable caps)?Compressed versionUncompressed versionWarning Will Robinson --- huge file! ~208Mb

author: mariush
author_rank: Super Contributor
timestamp: January 22, 2014, 04:33:12 am
content: Thank you for the contribution.For future reference, you should know there are plenty of virtual printer drivers out there which will basically turn anything you "print" into a pdf file.For example:CutePDF:http://www.cutepdf.com/products/cutepdf/writer.aspBullZip PDF :http://www.bullzip.com/products/pdf/info.phpPDF Creator :http://sourceforge.net/projects/pdfcreator/PDF Architect :http://www.pdfarchitect.org/Note that all above should be freeware but the installers for some may offer you toolbars or stuff like Google Chrome (you can deselect those easily).Also, theoretically this may not be 100% legal but anyway... some time ago Adobe published some older versions of their software products on their site along with the serial keys for them. It was rumored to be a sort of marketing stunt and a way to gain some customers who then would upgrade to newer versions, because the page had absolutely no restrictions.A few days later after it got spread over the net, they added a message saying the downloads are for customers who can no longer activate the products because the activation servers are disabled.The link for the downloads is here:https://www.adobe.com/cfusion/entitlement/index.cfm?e=cs2_downloadsYou just have to sign up for an Adobe live ID (free and no spam from them) and click on an Agree button to access the page. The page then has links to downloads and the serials are posted there. So you can get Acrobat 7 Pro for free (it's old but good enough, now there's already version 10 or something like that) or Adobe CS2 or whatever.Like I said, it wouldn't be 100% legal, depending on how you view things.
PV Electronics QTC Nixie Clock Kit - Page 1
Forum section: electronics / general

author: dexters_lab
author_rank: Unknown
timestamp: January 09, 2014, 10:42:38 am
content: arrived in the post this morningwont be building for a couple of weeks but will make a full report when it's done.kit is from PV Electronics in the UK (they ship worldwide)www.pvelectronics.co.ukTubes are IN-8-2.

author: dr.diesel
author_rank: Super Contributor
timestamp: January 09, 2014, 11:03:26 am
content: I got the same kit for X-Mas, think mine came from Ramsey here in the states. Turned out nice, love nixie tubes!

author: SeanB
author_rank: Super Contributor
timestamp: January 09, 2014, 11:10:53 am
content: Well, ordered one. Now I have a use for the few Nixie tubes I have now.

author: dexters_lab
author_rank: Unknown
timestamp: January 09, 2014, 03:01:20 pm
content: cant wait to build it, but i'm forbidden until after my birthday

author: SeanB
author_rank: Super Contributor
timestamp: January 09, 2014, 03:10:07 pm
content: Ordered, packed and sent for delivery in under 4 hours. Now for the month wait from SAPO. glacial at the best of times, and even more so around the new year. At least they will get through the backlog in February with Chinese New year being on, no mass of letters and parcels to handle.Note to all EEVBlog members, Chinese New year is coming soon, just to remind you that the whole PRC will be closed for the month. No tat from eBay!

author: idpromnut
author_rank: Unknown
timestamp: January 16, 2014, 03:42:38 pm
content: My wife bought be that kit from PV Electronics last Christmas.... lovely clock! Also, that was my second kit from him, and both had slight issues (first kit had a popped HV transistor, the second had a problem with the tube out-gassing). The guy running PV Electronics is a class act, helped me debug both issues (the first on the 26th of Dec) and promptly mailed me replacement parts with no hassle.His prices seem reasonable, and the support after sales is stellar, I can't recommend him enough

author: Co6aka
author_rank: Unknown
timestamp: January 16, 2014, 09:31:46 pm
content: A friend of mine is the designer:http://badnixie.com/BadNixie.com_Welcome.html

author: dexters_lab
author_rank: Unknown
timestamp: January 20, 2014, 08:53:23 am
content: ok, built my kit over the weekend, looks and is working great.I will do a more detailed write-up shortly but here is timelapse of me building ithttp://youtu.be/VseE647AmqA

author: Pete2
author_rank: Contributor
timestamp: January 20, 2014, 07:05:12 pm
content: Yeaaah! No, wait. Doesn't deliver to EU?! And it's a UK company? Madness.

author: dexters_lab
author_rank: Unknown
timestamp: January 20, 2014, 07:20:25 pm
content: some kits are not available in certain countries, it's strange i know
BT Decor telephone - Making improvements - Page 1
Forum section: electronics / general

author: steve30
author_rank: Frequent Contributor
timestamp: January 05, 2014, 06:53:05 pm
content: I bought a new telephone the other day; a BT Decor 2200, for about £25.Its quite a nice unit, it has nice clear sound, looks good, has a handset which is nice to hold, and has big buttons.However, it has a few niggles. The LCD is rather hard to read. It has little contrast, despite the setting, and some of the buttons (particularly the menu and phonebook buttons) aren't very responsive. Firstly, here's a few teardown photos:The first attachment shows the keypad PCB with carbon pads.The second attachment shows the LCD at a typical angle, and is quite hard to read. I think it actually shows up better on the camera than it does in real life.The third attachment shows the LCD at a good angle. Again, it looks better on camera.I'm wondering what causes some of the buttons to be a bit unresponsive. I put some conductive ink on the keypad plastic (rubber?), but that didn't make much difference. I'm also not sure what makes the LCD a bit crappy. I might be able to hack a backlight in there, as there is plenty of room.Any thoughts or opinions are welcome. These are only minor problems, and aren't of great importance, but being an electronic hobbiest, I do like to try and improve these things if I can.

author: SeanB
author_rank: Super Contributor
timestamp: January 05, 2014, 07:41:43 pm
content: Probably a very low clock speed on the micro which makes it slow to respond to keypresses, but saves power. Look to see if there is a negative voltage bias generator that you can vary the voltage of to improve contrast range. Cheap unit, only one quality PCB with the display, and a cheap one for the keypad and an even cheaper one for the phone side.

author: steve30
author_rank: Frequent Contributor
timestamp: January 05, 2014, 08:01:06 pm
content: Quote from: SeanB on January 05, 2014, 07:41:43 pmIt is of fairly cheap construction, but it seems adequate. The soldering is OK.I've a feeling the micro might have some kind of standby mode, as when pressing a number key, it takes a while to respond (and may miss it if pressed quickly), but subsequent pressed are detected immediately.I'm going to get some stuff to experiment with backlighting, as I've been wanting to play with this on various LCDs for a while anyway.

author: steve30
author_rank: Frequent Contributor
timestamp: January 17, 2014, 07:17:20 pm
content: Well, the micro does indeed scan the keypad really slowly. If you press a key to wake it up, it goes a little faster for a while, and if the telephone is powered by the phone line (as opposed to batteries), it is fast and responsive all the time. I wonder if I can hack it to go faster all the time.I hacked in a decent backlight as well. It only uses 200 microamps so won't have much effect on the battery.
Laser tape measure: +/- 2mm at 40m. How does that work? - Page 1
Forum section: electronics / general

author: JBeale
author_rank: Frequent Contributor
timestamp: February 03, 2014, 08:10:08 pm
content: I came across the Fluke 414D Laser Distance Meter and I'm curious how this works. It claims a typical range of 40 m (130 feet) and a typical measurement tolerance of +/- 2 mm (max +/- 3 mm). Amazon sells it for $99. The more expensive 419D and 424D units go to 80 / 100 m and +/- 1 mm typical. Note that this is a laser-based measurement device, not an ultrasonic tape measure with laser aiming pointer.Does anyone know the operating principle? The simplest laser distance measurement is measuring lateral displacement of the spot with a camera at an offset and doing triangulation, but I don't think that could possibly give this range and accuracy. That leaves a pulsed laser and a time-of-flight measurement, but with light travelling at 3E8 m/sec, achieving 1 mm resolution requires an optical receiver with a time resolution around 3.3 picoseconds (one way) or 6.6 ps for the round-trip. That sounds like a laboratory measurement, not a $100 consumer product.Does it do something clever in the frequency domain, correlating Tx/Rx signals using a swept frequency source, converting the instantaneous time-domain accuracy requirement into a wideband frequency measurement (?)

author: ve7xen
author_rank: Super Contributor
timestamp: February 03, 2014, 08:21:14 pm
content: The same question was asked a while back. Try that thread:https://www.eevblog.com/forum/chat/how-does-laser-meters-work/

author: JBeale
author_rank: Frequent Contributor
timestamp: February 03, 2014, 08:51:00 pm
content: Thanks for the link to that thread, very good info! (I had searched for something like that before posting, but "laser meter" isn't very specific.)
USB Controller IC for Audio Interfaces - Page 1
Forum section: electronics / general

author: Fantasma25
author_rank: Regular Contributor
timestamp: January 10, 2014, 06:46:05 pm
content: Does anybody know what kind of USB controller IC audio interfaces use to handle their USB communication? I'm talking about audio interfaces such as the Focusrite Scarlett series or the Mbox series from Avid or the Presonus Audiobox. Some of this even include a MIDI interface. Is there a chip that can take care of both audio and MIDI communication over USB? Or is it made by software with a microcontroller?

author: Bassman59
author_rank: Super Contributor
timestamp: January 11, 2014, 05:17:18 am
content: Quote from: Fantasma25 on January 10, 2014, 06:46:05 pmSome older designs used the TUSB3200A or the TAS1020B from Texas Instruments. Both are now EOL.A bunch of DSPs support USB. Several ARMs support it, too. XMOS has a USB 2.0 Audio reference design which works and is used in several products.-a

author: aflex
author_rank: Contributor
timestamp: January 13, 2014, 10:21:48 am
content: Bassman59 is right. TI are one of the quality providers of audio interfaces. Other than specified by him others are PCM2901/2903

author: smoothtalker
author_rank: Regular Contributor
timestamp: January 14, 2014, 07:11:53 pm
content: Saw a lot of TENOR TE7022. Not sure does that fit your application
Microscope ring lights - One standard size?  Or some sizes fits some... - Page 1
Forum section: electronics / general

author: Skimask
author_rank: Super Contributor
timestamp: January 14, 2014, 01:34:27 am
content: Are the ring lights for microscopes pretty much standardized or is it a crap shoot? e.g. can you buy a generic one off ebay for product X and be fairly confident it'll fit on product Y?

author: KJDS
author_rank: Super Contributor
timestamp: January 14, 2014, 10:09:10 am
content: The simple answer is "mostly."However I've not seen one that will fit my big Leica or any of the little non-zoom microscopes I've had, but every other one I've seen will fit any of the Optika, Motic, Zeiss, Amscope, Iroscope and countless others that I'd had.
preferred Solder paste? - Page 1
Forum section: electronics / general

author: echen1024
author_rank: Super Contributor
timestamp: January 18, 2014, 10:31:48 pm
content: well, I recently decided to build a reflow oven, and now need some solder paste to test it with. I have seen Multicire MP200 63/37 on digikey for $12 (25g), but Kester is much more expensive. Is there an advantage to the more expensive brand? The multicore is advertised as having multiple solder ball sizes, while Kester is T3. Other than that, they are both 63/37 rosin type solder paste. I am open to other brands as well.

author: Fsck
author_rank: Super Contributor
timestamp: January 18, 2014, 10:39:25 pm
content: Multicore's good stuff, it's just Kester's usually found more easily in NA which is why it tends to be preferred.

author: echen1024
author_rank: Super Contributor
timestamp: January 18, 2014, 10:49:58 pm
content: Quote from: Fsck on January 18, 2014, 10:39:25 pmMukticore is much cheaper on digi key, so multicire it is!

author: Fsck
author_rank: Super Contributor
timestamp: January 18, 2014, 10:56:01 pm
content: also, according to Alphatronique here on this forum, Amtech's freshmix paste is pretty good, sort of deals with the shipping hassles.https://www.eevblog.com/forum/manufacture/anyone-have-try-amtech-freshmix/msg319245/#msg319245

author: echen1024
author_rank: Super Contributor
timestamp: January 18, 2014, 11:28:03 pm
content: still too muchbfor my needs. just need a small tube

author: georges80
author_rank: Frequent Contributor
timestamp: January 19, 2014, 03:48:25 pm
content: http://www.cmlsupply.com/kester-ep-256-syringe.htmlsells Kester's Easy profile for the best price I've found and a full syringe versus most other places that sell 5 or 10g.I typically order 2 syringes at a time and store them in a ziplock bag in the fridge. They last quite a few months that way.cheers,george.

author: Kjelt
author_rank: Super Contributor
timestamp: January 19, 2014, 04:36:49 pm
content: Quote from: echen1024 on January 18, 2014, 10:31:48 pmAre you gonna use stencil or manual with a syringe?For stencil there is different paste with somewhat bigger solderballs so that the form stays better preserved after removing the stencil. Usually only in bigger jars (100, 250 and 500grams) but also much cheaper then small syringes. For a syringe you need the smaller solder balls paste so it flows well through the tips.

author: echen1024
author_rank: Super Contributor
timestamp: January 19, 2014, 04:53:46 pm
content: I am using it with a syringe. I have ordered Multicore MP200. Next time, however, I will give Kester 256 a try. Only ordered a little bit.
Someone ese doing oddball teardowns - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: January 03, 2014, 03:32:36 pm
content: Some interesting miiitary/aircraft stuff herehttps://www.youtube.com/user/msylvain59/videos

author: peter.mitchell
author_rank: Super Contributor
timestamp: January 04, 2014, 07:11:54 am
content: Cheers Mike, i just subbed, there is a wealth here!

author: StubbornGreek
author_rank: Frequent Contributor
timestamp: January 06, 2014, 12:46:51 am
content: Nice find and thanks for posting.

author: dexters_lab
author_rank: Unknown
timestamp: January 06, 2014, 08:57:57 pm
content: thanks Mike

author: wilheldp
author_rank: Regular Contributor
timestamp: January 06, 2014, 10:38:35 pm
content: They are interesting teardowns, but I have a very hard time understanding what he is saying with his thick, French accent. I don't mean that to be offensive because I can't speak a lick of his language. I'm just saying that I can't learn very much about the equipment he tears down if I can't pick up what he's putting down.

author: pickle9000
author_rank: Super Contributor
timestamp: January 06, 2014, 11:34:06 pm
content: What I like about Mike and Daves vids are that they normally have real educational value. If they see a transistor mounted backwards it can start a 30 minute investigation was this guy stupid or is there a valid reason. This guy has some interesting stuff buy why is it built like that, he has a bunch of it I want to know what makes it special.

author: dexters_lab
author_rank: Unknown
timestamp: January 07, 2014, 12:10:27 am
content: Quote from: pickle9000 on January 06, 2014, 11:34:06 pm+1Though i guess it could be hard trying to figure out what some oddball box of stuff from a 1970s russian aircraft did without the rest of things it plugged into!

author: xrunner
author_rank: Super Contributor
timestamp: January 13, 2014, 12:34:02 am
content: I've watched quite a few of his videos over the last few days. They are interesting, but he stops short of a complete teardown. He seems to really want to collect the junk he's accumulating and not disturb the innards. He will open up the cover on the thing, but he doesn't want to really go into most of the things to the point it would break seals or loosen screws with locktite on them. He also doesn't seem to want to try and power up anything. I haven't seen a single video where he's tried to apply power even if the power would be easily available.But he does get some weird items, and interesting boat-anchor Soviet stuff.

author: amyk
author_rank: Super Contributor
timestamp: January 14, 2014, 10:07:00 am
content: His accent sounds like the guy I saw before on YouTube with a huge pacemaker collection... might've been the same one.
Haunted Solder - Page 1
Forum section: electronics / general

author: CaptnYellowShirt
author_rank: Frequent Contributor
timestamp: January 10, 2014, 11:02:10 pm
content: From the eBay listing: "I promise this solder is not haunted. I'm not even sure how solder could be haunted. Capacitors, sure, they store things. But not solder. That doesn't even make sense, so stop bugging me about it."http://www.ebay.com/itm/MG-Chemcials-SAC305-Sn96-Lead-Free-Solder-032-1-2lb-/261213456306

author: GreyWoolfe
author_rank: Unknown
timestamp: January 10, 2014, 11:17:49 pm
content: I want some of whatever that person is consuming. I will pay expedited shipping!

author: CaptnYellowShirt
author_rank: Frequent Contributor
timestamp: January 10, 2014, 11:24:23 pm
content: "Special" flux required.

author: nihilism
author_rank: Regular Contributor
timestamp: January 11, 2014, 04:00:28 am
content: Sounds like an admission of guilt to me. It's definitely haunted.

author: mdszy
author_rank: Unknown
timestamp: January 11, 2014, 04:05:01 am
content: You have to wonder... how many people actually bugged him about this so badly that he needed to make a note of it?

author: GeoffS
author_rank: Unknown
timestamp: January 11, 2014, 04:10:25 am
content: It's on the RoHS - Register of Haunted Substances

author: codeboy2k
author_rank: Super Contributor
timestamp: January 11, 2014, 07:27:46 pm
content: Sounds like the seller was trolled4chan members frequently target one person online and troll the hell out of them "for the lulz"

author: Kjelt
author_rank: Super Contributor
timestamp: January 11, 2014, 07:55:13 pm
content: Quote from: GeoffS on January 11, 2014, 04:10:25 amQuote from: codeboy2k on January 11, 2014, 07:27:46 pmSo the seller is haunted?
Image quality issues of Fujifilm FinePix A340 camera - Page 1
Forum section: electronics / general

author: DJKA
author_rank: Contributor
timestamp: January 11, 2014, 10:49:10 am
content: Hi,does anybody have a clue what could possibly go wrong with my heap of cr@p Finepix A340 camera(please see the pic below)?Could it be CMOS sensor or other electronics fault? Autofocus is not working properly. Thank you!

author: marshallh
author_rank: Unknown
timestamp: January 11, 2014, 06:35:55 pm
content: I had a canon miniDV camcorder that started doing this. It got bad enough the sensor eventually went black.Canon issued a recall and the cause was the ccd connections failing under high humidity environments (Mine failed anyway)
Fuji PYX4 Temperature controller loses param's in EEPROM  - Page 1
Forum section: electronics / general

author: Antarctica
author_rank: Newbie
timestamp: January 10, 2014, 07:10:39 pm
content: I've been trying to revive an old optical radiometer (actually a pair of them), and the stuff I expected to be easy is turning out to be the most difficult (so far). These were known good operating units when they were decommissioned in about 2005.Both units use a Fuji PYX4 temperature controller to controller a 50W heater element in the sensor head. Both temp controllers are probably 1995 vintage - old.I've programmed the units and they are supposed to write the parameters (set point, PID, alarms, etc) to EEPROM, but when the power is cycled off, the temp controllers lose the parameters. I've opened both units and found no hold up battery or anything (and one shouldn't be required for an EEPROM anyway) that would point to why they are not working.I've never had a piece of equipment behave this way. Any ideas? I've never heard of a lifetime spec being attributed to EEPROMs other than the number of read/writes, and I'm sure that these units have come nowhere near that limitation, despite their age. They were programmed and ran for years in that configuration.I'd attribute this to just a failed unit if it were just one of the controllers, but I've got the same problem with both.Brent

author: SeanB
author_rank: Super Contributor
timestamp: January 10, 2014, 07:24:47 pm
content: With stuff that old I would look at dry joints or a missing supply rail, and failing capacitors will also cause that. A simple thing will be a write protect switch or link being open circuit from a long period of non use. It is possible for the eeproms ( likely a 24c02) to fail with time, the early generation of these were rather notorious for failing that way.With your name and probable location have they been deep frozen or stored outside? If that then the capacitors inside the unit will definitely all need replacing as they would all have failed.

author: Antarctica
author_rank: Newbie
timestamp: January 10, 2014, 07:40:35 pm
content: Yes, they were running down south in a previous lifetime - I couldn't bear to put them in the dumpster when they got upgraded. They've spent the past 7 years in my barn.Could be the caps, although nothing about them looks obviously failed, and I would expect them to not otherwise work if that were the case ( I.e., the programming, control, etc., all see to be fine, although they don't appear to read the process variable correctly, but that could be something else - they do see to indicate when the temp sensor (RTD) is disconnected).Brent

author: SeanB
author_rank: Super Contributor
timestamp: January 10, 2014, 07:50:36 pm
content: Photos of the insides then, and they might be fixable.
Teardown/review: Zeikos ZE-DS12 flash - Page 1
Forum section: electronics / general

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 09, 2014, 04:54:33 pm
content: At $10, it was crazy cheap for a flash so of course I had to buy one. After tearing it down, I was actually surprised by the good build quality.After a little tracing, I found that they cleverly had the flyback converter double as a boost converter for the logic. (And the logic power supply is the snubber for the flyback!) No input bypass cap, but no big deal to add one. The battery cover was a little loose, but carefully bending the metal with a screwdriver fixed that.The flash tube is quite a bit bigger than the ones in most pocket cameras but the capacitor is tiny. I have since swapped the original for a 250uF out of a broken pocket camera (keep in mind that the flash tube in that camera is still smaller than the one in this unit) and it greatly improved performance. Not sure how much it's going to reduce lifetime, but as it's only $10, just buy another if it breaks.It does have an optical sensor (with adjustable sensitivity) for use with cameras without a hot shoe, but I could not get it to trigger from a cell phone camera. That's a real shame as it's just about perfect for that application. It does work great with a pocket camera. With a DSLR, it operates flawlessly but it's not much (if any) improvement over the built in flash, especially in its stock form. At only $10 each, I suppose you could buy several and link them together...

author: SeanB
author_rank: Super Contributor
timestamp: January 09, 2014, 05:12:14 pm
content: I think if you replace the optical sensor with a red water clear LED it should work better with a camera phone flash as a booster flash. higher voltage output for the same amount of blue light will improve sensitivity over the IR photodiode used there.The capacitor probably will still outlast the tube.
Toshiba 4X SCSI CD-ROM (1995) teardown - Interesting I Swear - Page 1
Forum section: electronics / general

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 09, 2014, 12:27:47 pm
content: This was surprisingly cool, lots of interesting chips to look up and some experimentation. I also have a hard drive from the same computer that is even more interesting which I have all recorded and will post on the 11th.Thanks for watching!
Extech RH30 - Hygro-Thermometer teardown, Garbage Quality!! - Page 1
Forum section: electronics / general

author: smoothtalker
author_rank: Regular Contributor
timestamp: January 09, 2014, 08:25:47 am
content: I paid USD34 for this heap of shit. There is nothing much on the board really, I think the main chip is a TM8726. The humidity sensor seems to read low, I'm not sure how to accurate verify though..The 2 date code of 2009 and 2011 seem to indicate that this new product is probably a rebadge of old products. i can't be sure. but i wonder who is the OEM of Extech.
589 nm portable DPSS laser teardown (by a user from another forum) - Page 1
Forum section: electronics / general

author: ixfd64
author_rank: Frequent Contributor
timestamp: January 09, 2014, 05:02:35 am
content: For those of you who are into teardowns:http://laserpointerforums.com/f40/disassembly-589nm-laser-pgl-iii-pic-heavy-86628.html
UNIVERSUM FK100 - Page 1
Forum section: electronics / general

author: Simon123
author_rank: Regular Contributor
timestamp: January 08, 2014, 04:35:14 pm
content: Hello!I have bought Universum FK100 television for 3€ on flea market.When i turn it on there is straight line going across the screen in horizontal direction.I have already changed capacitors on both-tuner anddisplay driving boards.Where should i be looking for the problem?On the back it has trim pots for adjusting focus, bias.pwhat-is this?, bias.n-what is this?,line and size.I cant get schematic, beacuse i am not registred on radio mouseum.Thanks

author: Excavatoree
author_rank: Frequent Contributor
timestamp: January 08, 2014, 04:52:47 pm
content: You want to look in the vertical section - but without a schematic, it will be difficult. It's been 20 years since I worked on a CRT Television, but I'd guess there's a bad vertical oscillator transistor, and probably some of the associated resistors.Maybe you can identify the vertical deflection coils, and then trace the connection on the PCB. (or is it an old point to point set with tubes/valves?)

author: Simon123
author_rank: Regular Contributor
timestamp: January 08, 2014, 05:09:57 pm
content: I have measured voltages on transistors cdc8000 and cdc9000 and 2sb77.cdc's have around 0.28V what are proably base-emitter leads, and 2sb77 has 0.16V on whats proably base-collector?
Nokia AC10-X micro USB charger (fake?) - Page 1
Forum section: electronics / general

author: Rufus
author_rank: Super Contributor
timestamp: January 10, 2014, 02:35:19 pm
content: Photos of a Nokia AC10-X charger sold as genuine.The quality isn't terrible but I suspect it is a fake. The velcro strap for the cable was white unlike any photograph I have seen.Does anyone have what they believe to be a genuine one to compare with the photos?This charger is supposed to be a suitable and popular one for powering Raspberry Pis so there is a bit of electronic interest.

author: Lunasix
author_rank: Regular Contributor
timestamp: January 10, 2014, 02:44:50 pm
content: I have a Nokia AC10-E, and didn't noticed any difference, except the enormous plug on the 10-X.Same print, with same quality. And white strap. Sure mine is an original one (bought some years ago with a Nokia phone), so I don't think yours is a fake.

author: Rufus
author_rank: Super Contributor
timestamp: January 10, 2014, 04:27:09 pm
content: Quote from: Lunasix on January 10, 2014, 02:44:50 pmThanks for that. I have a similar and probably genuine AC6-X and it just looks better quality.Now everything is supposed to standardize on micro USB and you won't get chargers with phones etc you are left with the problem of finding a decent charger for yourself.
Tiny RC Car teardown - Page 1
Forum section: electronics / general

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 05, 2014, 12:39:19 pm
content: This onehereFull tripod use in this video! Tell me what you guys think and how I can make it better.I couldn't find anything on any of the chips, but did find something for the transistor. Not the most exciting bu better than nothing, eh?I really like how they did the steering controls, anyone else see this before?Thanks for watching!

author: Jon86
author_rank: Frequent Contributor
timestamp: January 05, 2014, 01:16:25 pm
content: Looking at the scope sideways was pretty awful

author: peter.mitchell
author_rank: Super Contributor
timestamp: January 05, 2014, 04:11:56 pm
content: looks like they just use a cheap "4 channel" garage door opener style IC

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 05, 2014, 11:49:21 pm
content: Quote from: Jon86 on January 05, 2014, 01:16:25 pmYes it was. I will apologize dearly for the rest of my life.

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 05, 2014, 11:50:47 pm
content: Quote from: peter.mitchell on January 05, 2014, 04:11:56 pmYeah? I suppose it would probably work, considering the charging circuit is little more than wires from the AA batteries connected directly to the NMH cell, it seems entirely possible.
Game Boy teardown - Page 1
Forum section: electronics / general

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 02, 2014, 12:48:23 am
content: VIDEOI mentioned I would make a video on this guy in my previous video.Here are some interesting links:Detailed SiteRAM datasheetSchematicCartridge SRAMThanks for watching!

author: Vgkid
author_rank: Super Contributor
timestamp: January 03, 2014, 03:58:50 am
content: I didnt realize that the first gen Gameboy was older than I'am. I owned a gameboy color, though a DS would be neat to own (just to play Pokemon).

author: DrLuke
author_rank: Contributor
timestamp: January 03, 2014, 07:38:49 am
content: The teardown really could use some more enthusiasm in your voice, aswell as a tripod. Otherwise I liked it!

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 03, 2014, 09:26:38 pm
content: tripod is present on my newer videos, and I don't really do enthusiasm unless I am really happy. haha

author: Heribert Hechtersheim
author_rank: Contributor
timestamp: January 05, 2014, 04:46:43 pm
content: I recently bought a couple of old broken Gameboys on ebay. I fixed most of them but one was heavily damaged by battery acid so it became irreparabel.The packages marked with "DA N" consist out of two diodes arranged like a voltage divider.The fourth wire on the headphone jack board is for sensing if a headphone jack is connected. When the plug is not connected the wire will be connected to ground, otherwise it floats. The amplifier chip notices that and turns the speaker on or off. Two of my Gameboys had the problem that the audio jack was corroded which caused that wire to permanently float so the speaker were turned off even though no jack was connected. It took me quiet some time to figure that out.The little board which is only one side copper plated is the DC converter board. The round inductor is a little transformer with various tappings. (schematic:http://gbdev.gg8.se/wiki/articles/DMG_Schematics)The pictures of the dies from the chips you showed look very interesting. Thank you for sharing.

author: sonnytiger
author_rank: Frequent Contributor
timestamp: January 05, 2014, 11:44:53 pm
content: Ahhhh now it makes sense, cool! Really appreciate the help! I might have figured out the DC converter board had I actually looked at the schematic haha, doh!
Mitutoyo caliper weirdness - Page 1
Forum section: electronics / general

author: andyturk
author_rank: Frequent Contributor
timestamp: January 05, 2014, 04:17:56 pm
content: WTF?

author: Unknown
author_rank: Unknown
timestamp: January 05, 2014, 04:26:03 pm
content: Now that's accurate.

author: plesa
author_rank: Frequent Contributor
timestamp: January 05, 2014, 04:28:08 pm
content: Did you tried to switch it from relative (INC) mode to normal? And of course is battery OK?

author: andyturk
author_rank: Frequent Contributor
timestamp: January 05, 2014, 06:41:19 pm
content: RTFM.So, the weird readout is actually an error display. It's probably getting a noisy reading on that spot and thinks I'm moving the jaws too quickly (but they're obviously stationary). Turns out I'd never actually zero'd the thing, and that's why I always had to measure in INC mode.I guess user manuals are filled with this kind of useful information. Who knew?

author: nhoj_yelbom
author_rank: Contributor
timestamp: January 05, 2014, 11:42:17 pm
content: Quote from: andyturk on January 05, 2014, 06:41:19 pmi was going to say ill buy them! nice calipers btw, glad its fixed
Santa Claus brought me a present!...albeit a couple weeks late... - Page 1
Forum section: electronics / general

author: Skimask
author_rank: Super Contributor
timestamp: January 04, 2014, 11:19:13 am
content: Ok, I had to pay a load for it, but it's neat gear nonetheless.Only took an hour to unbox it and make a test print. No issues, no problems, point and click, plug and play, etc.Uploading a long, boring, low res video of the whole thing now. Don't have any decent video editing software. Deal with it. Plenty of other better videos of the same thing out there.First thing I want to design/print is a screw on laminar water flow adapter for a standard garden hose. I've always got a kick out of that perfectly smooth water flow thing...After that, who knows...
LQ 670 printer - Page 1
Forum section: electronics / general

author: Simon123
author_rank: Regular Contributor
timestamp: January 02, 2014, 08:26:06 pm
content: Hello!I have this epson printer and i messed up the bidirectional alignment setting.So i followed the instructions,but i still dont get text aligned good.What should i do?

author: amyk
author_rank: Super Contributor
timestamp: January 03, 2014, 10:26:00 am
content: Make sure it's at a stable temperature and do a recalibrate.
look what I bought today for 200NIS ($55) - Page 1
Forum section: electronics / general

author: singera
author_rank: Contributor
timestamp: December 31, 2013, 09:59:13 pm
content: 3 isolation transformer (200-300VA) for 230V12 5V 13A open frame switching power supplycouple of dale power resistor6m of 5cm~ heat shrink tubes

author: ivan747
author_rank: Super Contributor
timestamp: January 01, 2014, 02:34:23 pm
content: Very very nice. I would definitely find a use for all of that.You're saying you got 3 isolation transformers or you got one with 3 windoengs from 200 to 300V? 3 transformers is a LOT of iron an copper for $55.

author: singera
author_rank: Contributor
timestamp: January 01, 2014, 08:17:09 pm
content: Quote from: ivan747 on January 01, 2014, 02:34:23 pmI say it again 3 transformers each one 200-300VA (the two others are not shown in the picture) (I dont know the exact power only assume) and couple of power resistors that shown and 12 PSU like that on the right.

author: zapta
author_rank: Super Contributor
timestamp: January 02, 2014, 12:49:12 am
content: Much better than 10 falafels.

author: GreyWoolfe
author_rank: Unknown
timestamp: January 02, 2014, 02:44:24 am
content: Because after eating 10 falafels, you might feelawful.
Game Boy Advance teardown - Page 1
Forum section: electronics / general

author: sonnytiger
author_rank: Frequent Contributor
timestamp: December 31, 2013, 03:16:17 am
content: VIDEOI didn't think this would be all that interesting, but it turned out to be not so bad. I also take apart one of the games which was pretty cool inside. All in all its a very nicely made piece of consumer electronics that can stand the test of time. If you have any questions here is where to post them!I will upload a Game Boy teardown in a couple days.I asked some questions in the video I am sure, but I don't remember them now so as usual any answers are appreciatedThanks for watching!GBATEK- everything you ever wanted to know about the game boy advanceThe dumb game I mentioned I was making
Another free oscilloscope on San Diego area - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: December 29, 2013, 11:47:11 pm
content: If you live in San Diego area an are interested in vintage equipment:http://sandiego.craigslist.org/nsd/zip/4264023221.htmlDavid.

author: echen1024
author_rank: Super Contributor
timestamp: December 30, 2013, 08:35:16 pm
content: It's gone
Hakko FX-888D - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: December 28, 2013, 10:02:09 am
content: Hakko FX-888D on sale this Saturday only at Fry's Electronics for $64.99By doing a quick price check on Amazon and Ebay, the price seems to be a good price.So this is a good oportunity for people in need of a solder station and with access to go to a Fry's store.David.
Screw/Dial Syringe Plungers - Page 1
Forum section: electronics / general

author: sleemanj
author_rank: Super Contributor
timestamp: December 24, 2013, 10:56:22 am
content: One of the insulins I take comes in disposable pens, like this...once it's run out (for me, about 10 days), it's junk, and I chuck it in box in the hope that it will be useful for something in the future.Anyway, I found that taking the insulin cartridge off, slitting the casing and doing a bit of modification they can be modified thus...P1040501bybitsyboffin, on Flickrin a couple of ways so that either it can work as it used to, dial up a number and push to advance the plunger that many "units", or simply turn the knob to advance/retract the plunger.Conveniently, the pen fits snugly into the end of a 10cc syringe...P1040502bybitsyboffin, on FlickrThis allows a very precise means of getting out whatever is in the syringe, in this case flux gel. About 11 turns for a plunger travel of around 33mm (so a 1/8th turn will extend the plunger around 0.4 mm), of course you can rewind and insert the device further into the syringe as it gets used up.Anyway, this is such a nice thing, it got me thinking that there must be some actual proper device to do this sort of dispensing on arbitrary syringes, but my googling hasn't actually turned anything up... does anybody know of such a thing?

author: GreyWoolfe
author_rank: Unknown
timestamp: December 24, 2013, 09:40:35 pm
content: My wife works at a doctor's office. She brings me the occasional syringe and I have a small stock of 18 ga needles that i use for gel flux applications. Works a treat as Dave says. You can buy small squeeze bottles with needles on them but they are mainly for liquid flux use. I don't think that there is a commercial gel flux syringe applicator. When I have seen videos of someone using gel flux, they are using a stiff bristle brush to apply.

author: quint
author_rank: Contributor
timestamp: December 25, 2013, 04:25:05 am
content: Gel flux is pretty easy to get in syringe packaging. For example:http://www.digikey.com/product-detail/en/SMD291/SMD291-ND/355201
Power AMP STK075 vs STK075G question - Page 1
Forum section: electronics / general

author: ilanko
author_rank: Contributor
timestamp: December 19, 2013, 02:45:48 am
content: Hi guys,I am fixing vintage ONKYO TX 1500 stereo amplifier. apparently one STK is dead. I found 2 type of STK'sSTK075andSTK075G. The first is original Sanyo, second is "Generic".Any one against or behave Generic ?
video's 1 to 64 - Page 1
Forum section: electronics / general

author: trebor
author_rank: Newbie
timestamp: December 15, 2013, 04:44:27 pm
content: hihelp pleasehow do i find video;s 1 to 64, they do not list

author: dr.diesel
author_rank: Super Contributor
timestamp: December 15, 2013, 04:47:13 pm
content: They search and play fine here?I simply searched for EEVblog #1

author: Kohanbash
author_rank: Regular Contributor
timestamp: December 15, 2013, 06:32:30 pm
content: There is probably a better way but you can see them if you search youtube for "eevblog #X" or if you look at the youtube eevblog home and click videos.
Fotovix VY-420 Film Video Processor - Page 1
Forum section: electronics / general

author: Fantasma25
author_rank: Regular Contributor
timestamp: December 14, 2013, 10:49:28 pm
content: Today I went to an obsolete products sale and I found this for only $80 mexican pesos (like 6 or 7 USD)I think you put some kind of film on the side and it displays it on the TV. It didn't come with any power cable and I did not have any lying around, so I decided to quote Dave and take it apart (sort of).I took a some pictures and made an online album (sorry if some of them are blurry, I took them with my phone).Some of the chips I identified are Type D Flip Flops (TC4013BP), Quad Bilateral Switches (TC4066BP), Modulator/Demodulator (MC1496P) and NAND Gates (TC4093BP).Has any of you ever used one of this?https://imageshack.com/a/lNvb/1
Anatomy of a Fitbit One - Page 1
Forum section: electronics / general

author: Adler
author_rank: Regular Contributor
timestamp: December 09, 2013, 06:21:38 pm
content: I had a dead Fitbit One and couldn't find any good pictures of it guts and components so I decided to see what this thing is made of. Not to mention evaluate its repairability (wasn't expecting much).It was actually amazingly easy to get into the device. At first I tried prying on the metal back. This proved to be a mistake, the back is very well glued on and is entirely for show. The unit is comprised of two halves that when heated pried apart very easily.My first hunch that the battery was dead proved to be incorrect. Just in case, I swapped out the battery for a spare 3.7v lipo I had lying around. No change.Turns out the problem is actually with the LCD (or something driving it). In some light at certain angles I can actually see the edge of the LCD displaying a picture but only at the edge and its insanely faint. I very much doubt I could source another LCD and if I could Im not too sure how these are connected to the board. If anyone knows please school me (Picture below. Doesn't look like solder, its just stuck down).The processor is a STM32L ARM.The bluetooth chip is a nRF 8001.Regular old buzzer for the silent alarm.It has a 560702ba03 digital pressure sensor. I assume for the altimeter?Im not sure which chip is the accelerometer. Maybe the device next to the bluetooth?Here are a slew of pics.

author: thejosheb
author_rank: Newbie
timestamp: December 09, 2013, 07:22:08 pm
content: Thanks for posting this. My wife got me one of these and I was really curious what was inside but she'd kill me if I tore it apart.

author: amyk
author_rank: Super Contributor
timestamp: December 10, 2013, 12:29:04 pm
content: The connection is made withanisotropic conductive film. The failure could be caused by separation of this - have you tried (gently) applying pressure on the ribbon where its bonded to the display, and also where it meets the PCB?

author: Adler
author_rank: Regular Contributor
timestamp: December 12, 2013, 12:31:21 am
content: Quote from: amyk on December 10, 2013, 12:29:04 pmInteresting stuff. I have tried all kinds of pressure on the ribbon, nothing works. I am considering peeling up a small portion and trying to melt some solder paste in the junction. I'm not sure the ribbon can handle the heat, we'll see.

author: amyk
author_rank: Super Contributor
timestamp: December 12, 2013, 12:33:32 pm
content: Quote from: Adler on December 12, 2013, 12:31:21 amNo. That's why ACF is used.
Cramolin - Any European source that can ship to the UK? - Page 1
Forum section: electronics / general

author: amiq
author_rank: Regular Contributor
timestamp: December 09, 2013, 11:06:00 am
content: I see that Farnell can no longer supply some cramolin products in the UK.Does anyone know of a source of their contaclean, protection and top-pin sprays?

author: amiq
author_rank: Regular Contributor
timestamp: December 09, 2013, 11:12:44 am
content: No - they won't ship to the UK either.

author: czdt8m
author_rank: Contributor
timestamp: December 09, 2013, 11:24:31 am
content: Quote from: amiq on December 09, 2013, 11:06:00 amMaybe you can contact this company?http://www.itwcp.de/home-en.html

author: amiq
author_rank: Regular Contributor
timestamp: December 09, 2013, 11:38:22 am
content: Just placed an order with Burklin for contaclean and top-pin, so it looks like they will ship to the UK. Still looking for a source for cramolin protection...I've emailed the manufacturer to see why they are ignoring the UK market.

author: bingo600
author_rank: Super Contributor
timestamp: December 10, 2013, 09:24:15 pm
content: Quote from: amiq on December 09, 2013, 11:12:44 amSeems strange to me , as conrad has a UK departmenthttp://www.conrad-electronic.co.uk/ce/en/Search.html?search=cramolin/Bingo

author: Matje
author_rank: Regular Contributor
timestamp: December 11, 2013, 11:34:33 pm
content: Quote from: bingo600 on December 10, 2013, 09:24:15 pmThere seem to be increasing legal problems shipping certain stuff. For instance stuff for etching PCBs (except FeCl3) now seems to require a declaration from the buyer that he won't do "bad things" with it or something - so companies like Conrad increasingly refuse to ship that stuff. You even can't buy it in person in every store anymore - the store apparently needs an employee certified for selling it to you.This seems to be some new nonsense from Berlin or more likely Brussels. The world is ruled more and more by imbeciles, who grow stupider and stupider year over year. :-(I personally am waiting for the day these idiots will prohibit selling table salt because somebody told them it's technically NaCl, thus a chemical, and so obviously (chemical! we are all gonna die!) something dangerous.