hybridfree/eevblog-posts huggingface dataset:
Appropriate JBC tip for drag soldering? - Page 1
Forum section: electronics / general

author: motocoder
author_rank: Unknown
timestamp: August 27, 2015, 03:29:58 pm
content: Can someone recommend the appropriate JBC C245 series tip for drag soldering on SMD parts? I think I want some sort of reservoir tip (spoon?), but not sure which of the hundreds of tips they have is most appropriate.

author: RobertHolcombe
author_rank: Frequent Contributor
timestamp: August 27, 2015, 09:12:41 pm
content: First four aimed at drag soldering, different sizes available depending on your requirementsC245938 3.8mmC245931 2.7mmC245067 2.3mm slim profileC245965 1.9mmLast two are aimed at rework having almost no tinning on the side of the tip, only on the face of the hoof/spoonC245102 2.0mmC245064 1.3mm

author: motocoder
author_rank: Unknown
timestamp: August 27, 2015, 09:59:06 pm
content: Quote from: RobertHolcombe on August 27, 2015, 09:12:41 pmThanks, Robert!
IDC CONNECTOR WITH FLAT BLADE PINS - Page 1
Forum section: electronics / general

author: paulc
author_rank: Contributor
timestamp: September 05, 2015, 11:01:34 am
content: Please look at the attached pictures.I need help finding the part number or at least manufacturer name for the connector on the flat cable.The equipment is from GERMANY so probably it is a german or european manufacturer.Thanks.

author: jitter
author_rank: Frequent Contributor
timestamp: September 05, 2015, 11:08:00 am
content: Oh yeah, these ring a bell... I've seen them at work.Molex Picoflex, perhaps?

author: ovnr
author_rank: Frequent Contributor
timestamp: September 05, 2015, 11:10:33 am
content: Looks like aMolex Picoflex PF-50 90327. Double-check the pin pitch first, though.Also, here's themating connector.

author: jitter
author_rank: Frequent Contributor
timestamp: September 05, 2015, 11:12:59 am
content: Hah, you beat my edit...

author: bktemp
author_rank: Super Contributor
timestamp: September 05, 2015, 11:23:39 am
content: Lumberg Micromodul:http://www.lumberg.de/main/common/serie.asp?ser=030&cat=1&lang=deu

author: paulc
author_rank: Contributor
timestamp: September 05, 2015, 11:24:11 am
content: The MOLEX PICOFLEX is exactly what I was looking for.Many thanks,Paul

author: Quarlo Klobrigney
author_rank: Super Contributor
timestamp: September 05, 2015, 11:24:54 am
content: https://www.samtec.com/connectors/rugged-power.aspx

author: paulc
author_rank: Contributor
timestamp: September 05, 2015, 12:44:44 pm
content: The SAMTEC connector is different from the one I was looking for.Paul
CEM DT-980 Thermal handheld camera - Page 1
Forum section: electronics / general

author: nuno
author_rank: Frequent Contributor
timestamp: August 27, 2015, 03:03:38 pm
content: Ok, so "bit the bullet" and bought this one.http://www.cem-instruments.com/en/Product/detail/id/683/pids/888Cheaper than a similar FLIR (and 80x60 vs 80x80 for the CEM). I didn't play much with it so far, I can only say it met my expectations; but keep in mind that this is my 1st contact with a thermal camera so I have no experience and my standards are low. The screen interface seems decent. Focus is manual (only for the thermal sensor).I didn't find any review/comments on this camera so, feel free to ask me questions, suggest me tests, I'll try to answer the best I can.
15U 19 In. Rack Suggestions for Mounting Electronics Gear and Drives - Page 1
Forum section: electronics / general

author: magicsmoke
author_rank: Regular Contributor
timestamp: August 26, 2015, 01:50:41 am
content: Hi,Does anyone have any suggestions for 15U (Something less than 31") 19 In. racks with casters that would work well for mounting electronic gear and electric drives. Something with lots of shelving and other options would be ideal.The lowest cost option I have found is the Norco R4-15U (http://www.norcotek.com/product/r4-15u/) which gets very mixed reviews. IStarUSA seems to over a very similar rack plus that looks a little fancier WO15AB (http://istarusa.com/claytek/products.php?series=OpenFrame&sub=WO&model=WO15AB#.Vd0bI_lVhBc) but there are essentially no reviews.Another option would be fore me to build something out of 80/20 but I probably want to avoid that.Any recommendations for inexpensive but good quality 15U racks?

author: fivefish
author_rank: Frequent Contributor
timestamp: August 26, 2015, 04:20:05 am
content: I have (2) of these side wing desks... 14u only though, not 15u that you want. All-metal construction but top is 1+" laminate wood. No casters though, but I think you can DIY that.Problem is it's been discontinued but some online stores still carry them. Just have to look for them. I think I paid $180 each for these at Sweetwater. I'm using them to hold rack UPS and servers, switches, and on my 2nd rack, I have rack synths, samplers, patchbays, and audio interface. Very very strong.RAXXESS CONFIG/SYSTEM2B EBONY FLECK CONFIG-U-RAXX DESK SYSTEM 2

author: magicsmoke
author_rank: Regular Contributor
timestamp: August 26, 2015, 04:27:43 am
content: Quote from: fivefish on August 26, 2015, 04:20:05 amThanks for the recommendation actually 14U would work too. I just need something under 31" tall including casters.

author: fivefish
author_rank: Frequent Contributor
timestamp: August 26, 2015, 06:55:11 am
content: QuoteSorry it won't work.The laminate top is 1.25" thick.If you want 14u tall + the 1.25" thick top, then your casters will have to be 1" or less to fit under 31"

author: nanofrog
author_rank: Super Contributor
timestamp: August 26, 2015, 07:46:04 am
content: ASamson SRK-12might be worth a look (12U, steel, 27.5" w/ incl. casters, and rated fairly well). It's basic, but you'd be able to install a shelf/tray if you wish (say ~$30).Best part, is it's only $180 delivered.FWIW, "12U portable rack" and "12U rack casters" turned up alternatives in a quick search if it's not to your liking (casters are usually an option, so bear that in mind when figuring height).
Sabrent USB Turbo Charging Adapter - Page 1
Forum section: electronics / general

author: cuebus
author_rank: Unknown
timestamp: August 24, 2015, 01:35:53 am
content: http://www.sabrent.com/category/usb-hubs/HB-SFST/Seems like BS to me. How can a device provide more power than its input delivers?I'm surprised at the Amazon reviews. Either there's a bunch of suckers or is there something I'm missing?

author: eas
author_rank: Frequent Contributor
timestamp: August 24, 2015, 06:42:18 am
content: I don't know whats inside this thing, and what is described does sound like BS, but...USB devices don't always figure out the maximum current available to them, and so may choose a lower charging rate than they are capable of. There are chips that can help with that for USB bricks or power banks, and there are devices that look similar to this thing that can be used to retrofit it to existing chargers. Given that devices might default to 500mA, whereas some sources can provide 2A, the speedup can be significant.

author: tszaboo
author_rank: Super Contributor
timestamp: August 24, 2015, 08:07:33 am
content: There are a bunch of USB powered Li-ion chargers which increase their charging current, until there is x voltage drop on the input. So if you boost the voltage to, say 5.5V they will charge faster. Or if you increase the voltage based on the current to compensate the cable.So yeah it can work.Not to mention this BS recognizing chargers on the D+ D- pins.

author: cuebus
author_rank: Unknown
timestamp: August 28, 2015, 06:40:35 am
content: Interesting. Thanks for the insights guys!
Aoyue 850 series - Page 1
Forum section: electronics / general

author: stuffandblah
author_rank: Newbie
timestamp: August 11, 2015, 10:18:40 pm
content: Hi,Can anyone help to shed some light on the differences between the Aoyue 850 series of SMD rework stations please?They all look pretty much the same expect for the number of nozzles supplied.Models are:Int850Int850A+Int850A++850CThanksDave

author: rvalente
author_rank: Frequent Contributor
timestamp: August 19, 2015, 12:19:52 am
content: Well, how can I say? They are like ugly girls in different dresses, none of them are real good but all of them get the job done.I personally own one of them, worth the low cost.

author: Lunasix
author_rank: Regular Contributor
timestamp: August 20, 2015, 09:54:00 pm
content: Nozzles are useless. I have a 850 with somme nozzles and I never use them. I only use a 3mm diameter nozzle to unsolder all circuits (most are tqfp 100). Board and circuits are never damaged, I've already soldered and unsoldered a PIC32 (tqfp 100) 4 times.

author: bitseeker
author_rank: Super Contributor
timestamp: August 20, 2015, 11:54:13 pm
content: Detailed information is rather scarce. It seems that they're just revisions. 850 -> 850A+ -> 850A++

author: Deathwish
author_rank: Unknown
timestamp: August 21, 2015, 12:05:23 am
content: Quote from: rvalente on August 19, 2015, 12:19:52 amSorry but I just found this sooo funny.

author: GreyWoolfe
author_rank: Unknown
timestamp: August 21, 2015, 02:07:41 am
content: Quote from: rvalente on August 19, 2015, 12:19:52 amWhich, the Aoyue or the girl

author: rvalente
author_rank: Frequent Contributor
timestamp: August 21, 2015, 02:13:55 am
content: Quote from: GreyWoolfe on August 21, 2015, 02:07:41 amHaha good one, the soldering station! My GF if pretty =D

author: Deathwish
author_rank: Unknown
timestamp: August 21, 2015, 02:30:57 am
content: I am glad you cleared that up, my mind was thinking you had said you owned an ugly one that was low cost. I was imagining her having read that and beating you for it.

author: timofonic
author_rank: Frequent Contributor
timestamp: August 22, 2015, 12:54:47 pm
content: Quote from: Deathwish on August 21, 2015, 02:30:57 amLow cost girlfriend? That's nearly impossible!I'm economically broken and still trying to get out of my very late adolescence. She complains about it and my weirdness, but I'm going okay and progressing. She's relatively low cost, but also likes she usual women stuff (shoes, dresses, complements, makeup...) a lot. Anyway, she's a book nerd
Fluke 287 Input Alert Diode Type / Replacement - Page 1
Forum section: electronics / general

author: JohnS8
author_rank: Newbie
timestamp: May 31, 2015, 06:45:59 am
content: Hi,I've bought a used Fluke 287 on eBay that has an issue with the input alert ("Leads connected incorrectly" in any setting right after boot). Visual and initial inspection revealed (so far) that the diode (LED?) between the A / mA sockets (labelled DS2) is missing. Probably the solder joints were bad and/or the device was dropped ... unfortunately the missing diode is also not found inside the case of the multimeter.So far I tried using a white status LED (the only kind available for a try). On power up it blinks once quite brightly and as soon as the input alert goes off it flickers with a couple of short blinks / second. Apparently my replacement is not the right kind as the input alert goes off despite the operating LED.Does anyone have a suggestion as to what kind of LED I could try replacing it with. As I have no working unit I can't say which color or wavelength the diode uses (maybe even IR?). I would really appreciate any feedback or if another owner can identify what LED is used inside a working unit.Btw: In the pcb picture posted by Baqar79 the diode DS2 is visible (between the amp sockets)https://www.eevblog.com/forum/reviews/fluke-287-dmm-teardown-and-photos/?action=dlattach;attach=11258

author: JohnS8
author_rank: Newbie
timestamp: June 11, 2015, 08:11:57 pm
content: Problem solved ... with a little reverse engineering: Fortunately the phototransistors are quite unique and easy to identify as OSRAM SFH 325 FA-3/4-Z series, peaking at 980nm wavelength, and that gives a clue about what kind of LED is being used in the input alert circuit. For reference if anybody ever comes across the same issue:The Diode DS2 is an infrared diode. Replacement with an SMD 0805 sized IR diode with 940nm wavelength seems to work just fine. In my case a Harvatek HT-170IRAJ was used. Just be careful that the height of the led is not to great, otherwise the diffusor in the multimeter case will crush your led when the case is reassembled

author: ModemHead
author_rank: Frequent Contributor
timestamp: June 11, 2015, 08:51:20 pm
content: Useful information. Thanks for coming back to post the results of your search and successful repair!

author: Binhnt
author_rank: Contributor
timestamp: August 20, 2015, 03:26:27 pm
content: Quote from: JohnS8 on June 11, 2015, 08:11:57 pmOmg, thank you so much John, i have the same situation with my fluke 289. i got to do as your recommendation.Very great job man !

author: JohnS8
author_rank: Newbie
timestamp: August 22, 2015, 09:45:43 am
content: Quote from: Binhnt on August 20, 2015, 03:26:27 pmglad it worked. The InputAlert feature is nice but compared to the overall quite sturdy build quality of the device the placement and mechanical sensitivity of the IR led is not too well thought through- especially since it renders the multimeter effectively useless when missing. With a device of that price range I had to investigate further and try to fix it
Can anyone identify this pot winder from the 50s? - Page 1
Forum section: electronics / general

author: ez24
author_rank: Super Contributor
timestamp: August 27, 2015, 10:05:24 pm
content: Can anyone identify this pot winder?Sure looks like big pots. If I had to guess I would say the 50'sEdit: Perry Mason is holding the picture and it might be a "coilatron" ?

author: rfeecs
author_rank: Frequent Contributor
timestamp: August 27, 2015, 10:38:50 pm
content: No, but I remember seeing the episode. Here's a partial transcript:http://tv.ark.com/transcript/perry_mason-(the_case_of_the_arrogant_arsonist)/1326/KOFY/Wednesday_September_29_2010/464399/Code:00:25:16One more thing.00:25:17This item here marked "coilatron" -- what is it?00:25:19Some kind of an expensive manufacturing machine -- latest thing on the market.00:25:23It winds coils for a thing called a, uh, potentiometer.00:25:28Potentiometer?00:25:33Here's a photograph of the coilatron potentiometer coil-winding machine that you asked about.00:25:39That machine runs about $50,000.00:25:41It's a continuous, high-speed, extremely precise, self-correcting winder.00:25:46It more than pays for itself -- improved accuracy with better cost through higher yields.00:25:52At least, that's what my brochure promises and what the machine delivers.00:25:56Are many of these made, mr. herbert?00:25:59No, the market's pretty limited -- outside of the iron curtain, I'd say a potential of approximately 25 machines.00:26:06Then it's not exactly a secret weapon.00:26:09No, mr. drake.00:26:10But itdoesrepresent automated, high-precision electronics methods.00:26:15Industrial know-how can be just as vital as the latest icbm.Maybe it's fictional?

author: Richard Crowley
author_rank: Super Contributor
timestamp: August 27, 2015, 10:58:22 pm
content: The photo shows SOME kind of power-assisted, semi-automatic, factory machine tool.Probably close enough for the prop people employed by the production company.I don't think it looks much like the kind of winder we would expect to make the elements for wire-wound pots. It looks like it makes coils that are too big. Unless they are for giant power rheostats or something....

author: ez24
author_rank: Super Contributor
timestamp: August 28, 2015, 02:34:58 am
content: Quote from: rfeecs on August 27, 2015, 10:38:50 pmWow I am impressed and surprised I got the name correct - coilatron potentiometer - it was hard to understand and I had to listen a dozen times and I just guessed. I will put the name in the title and see if anyone knows if it is real
Best Value X-Y Table? - Page 1
Forum section: electronics / general

author: magicsmoke
author_rank: Regular Contributor
timestamp: August 12, 2015, 12:48:18 am
content: Is there an X-Y Table that is regarded as a best in regards to price to performance? Ideally, I am looking for something compatible with Proxxon 28600 Micromot Drill Stand MB 200. Proxxon does offer a X-Y Table, the Proxxon 27100 Micro Compound Table KT 70 but some reviews on Amazon say that there are better options. What do people recommend?

author: ovnr
author_rank: Frequent Contributor
timestamp: August 12, 2015, 01:33:46 am
content: From my own research, the Proxxon KT70 is the cheapest option that's passable.Mine works well enough. You may need to adjust the gibs after the first few uses. It's alsoreallysmall. Basically I'm happy with it for what it is, but itispretty much a toy.
NX Schematic vs Autocad Electrical - Page 1
Forum section: electronics / general

author: qwaarjet
author_rank: Regular Contributor
timestamp: August 07, 2015, 04:35:47 am
content: Currently my company uses Siemens NX for most things like site layout and mech systems but the electrical group uses AutoCAD Electrical for power and PLCs. There is a general consensus that acad is better the carving our schematics into a mammoth tusk with a rock but only just. Siemens list LTX as a partner software that does schematic capture, has anyone used it how dated is it LTX website hasn't been updated in a while. I'm also open to suggestion for any other schematic capture program that would play well with NX.

author: thefamilyman
author_rank: Regular Contributor
timestamp: August 07, 2015, 04:38:32 pm
content: I use Bentley Promis-e.It's fantastic for electrical but honestly don't know its integration with NX.I would look it up but being in china currently many websites are hard to get to and my VPN is being a bit weird.

author: rvalente
author_rank: Frequent Contributor
timestamp: August 19, 2015, 12:22:35 am
content: Kind of off-topic but, have any of you used Eplan 8? Its getting and standard here in Brazil.
No Linear Technology at Mouser? - Page 1
Forum section: electronics / general

author: SaabFAN
author_rank: Frequent Contributor
timestamp: August 13, 2015, 06:15:27 pm
content: Does anyone know why there are no Linear Technology Parts available from Mouser and if this is going to change any time soon? I currently need 2 or 3 parts from LT in my BOM, but buying everything from Farnell would increase component-cost by almost 50%.

author: c4757p
author_rank: Super Contributor
timestamp: August 13, 2015, 06:18:51 pm
content: Doubt it'll change any time soon, LT has been around since 1981 and Mouser has never stocked them.Part of why I tend to order from Digi-Key for my personal projects despite the higher cost. They have the best selection of both manufacturers and parts, and have better service (than Mouser, don't know about Farnell) as well.All hail Digi-Key, fucking awesomest of the distributors!
Controlling a Panasonic pan/tilt head - Page 1
Forum section: electronics / general

author: Svuppe
author_rank: Regular Contributor
timestamp: August 09, 2015, 09:22:30 am
content: Hi everyone.I got my hands on a Panasonic pan/tilt head, model WV-PH10. It looks solid, and should be able to handle up to 5 kg camera equipment. But that is about all I've been able to dig up. I only have the head, not a camera that is compatible with it.I'd like to get it going, but have no idea about the control interface. Not even if it is analog or digital. Does anyone here happen to know? If not, then I guess it is teardown time (and I just may do that anyway).

author: tomlut
author_rank: Regular Contributor
timestamp: August 10, 2015, 01:03:23 am
content: http://freeservicemanuals.info/en/servicemanuals/viewmanual/Panasonic/WVRC35/WVAD37/WVCR12/WVPH10/Click on the WV-RC35 part number in the table. Page 7 and 27 of the pdf in particular.

author: Svuppe
author_rank: Regular Contributor
timestamp: August 10, 2015, 03:34:27 pm
content: Thank you so much.That was exactly what I needed. The interface is analog. Present one voltage, and it moves one way. A higher voltage and it moves the other. No voltage stops it. There are two separate inputs. One for pan and one for tilt.Unfortunately it is on/off only. I had hoped for the possibility to control the speed as well.Now I "only" need to find an extra power supply to see if it works or not.Again thanks a lot. I hadn't found that schematic with the searches I tried.

author: tomlut
author_rank: Regular Contributor
timestamp: August 11, 2015, 12:27:56 am
content: Yeah it looks like a nice simple analogue interface but not much control.If you want to use it as a motion controlled time lapse head you might be able to replace the motors with steppers or servos and roll your own control board.
PaceLink connector - Page 1
Forum section: electronics / general

author: piranha32
author_rank: Unknown
timestamp: August 09, 2015, 05:27:48 am
content: I have PPS25A Pace SensaTemp soldering station, and it has in front an RJ11 connector labeled PaceLink. Does anybody know what this connector is used for and if it is possible to find description of the protocol? Googling for PaceLink, even in context of other related words does not find any useful result.
ATM Skimmer Close-up - Page 1
Forum section: electronics / general

author: chicken
author_rank: Frequent Contributor
timestamp: August 11, 2015, 05:04:38 pm
content: Here's a creative (purely technically speaking of course) use of FPC prototyping services..(viahttp://krebsonsecurity.com/2015/08/chip-card-atm-shimmer-found-in-mexico/)It's a device that's inserted into the credit card slot of an ATM.The contacts for the card chip probably are duplicated on the back. The big ICs are a 16MBit serial flash (http://www.adestotech.com/products/data-flash/) and an ATmega32. I wonder if it runs ArduinoI guess the device is powered through the chip contacts and logs all communication between the card and the ATM. 16MBit of flash is a lot. I wonder if this device is part of a more sophisticated scheme like this "Pre-Play" attack:http://securityaffairs.co/wordpress/25134/cyber-crime/chip-and-pin-cloning.html
QT - Page 1
Forum section: electronics / general

author: GEuser
author_rank: Frequent Contributor
timestamp: September 15, 2014, 04:24:08 am
content: Q

author: rickselectricalprojects
author_rank: Regular Contributor
timestamp: August 07, 2015, 11:06:06 am
content: Quote from: GEuser on October 17, 2014, 12:52:55 amWow 7.5w outputIsn't that pushing it heat wise a bit because 5w uhf radios have a xx78 regulator in them and wouldn't that be overloading it? Also what pot did you turn to increase the output?
Mantis Elite LED ligths  - Page 1
Forum section: electronics / general

author: rfbroadband
author_rank: Unknown
timestamp: August 05, 2015, 05:58:50 pm
content: for some reason I remember that I read in this forum that some people experienced long term reliability issues with the LED boards used in the Mantis Elite scopes (e.g. LED boards failing requiring a new LED board). I did not find any comments searching this forum.I would appreciate if people could share their experiences if they encountered any issues with the LED lightening used in the Mantis Elite. Thanks.
where to buy soldering station? - Page 1
Forum section: electronics / general

author: philipyi
author_rank: Newbie
timestamp: July 29, 2015, 12:35:13 pm
content: in France, is there any market places to buy soldering station, like Conrad in Germany?

author: LA7SJA
author_rank: Regular Contributor
timestamp: July 30, 2015, 07:58:48 am
content: Have you looked athttp://www.amazon.fr/Station-soudage-50-80-Weller/dp/B0015G5WU6/ref=sr_1_1?s=hi&ie=UTF8&qid=1431940716&sr=1-1&keywords=weller+ws+51orhttp://www.amazon.fr/b/ref=dp_bc_4/280-4099300-4026267?ie=UTF8&node=1854890031and this placehttp://www.selectronic.fr/maybe this devicehttp://www.selectronic.fr/station-de-reparation-numerique-80w-230v-reglage-de-temperature-element-d-echauffement-ceramique.html?suggestion=produit. Any way I have only once been i France and it was before the Euro so I don't realy know any actual fysical store i France but I bet I could find a few if was trying a bit harder.Johan-Fredrik

author: philipyi
author_rank: Newbie
timestamp: July 30, 2015, 08:38:49 am
content: tks, Johanif possible, pls help to get more info to me.or you may also tell me some fysical stores in your country.I am developing european market for soldering items.will you help me?

author: LA7SJA
author_rank: Regular Contributor
timestamp: July 30, 2015, 10:36:32 am
content: First, my country? I am a norwegian living in Thailand working out of Malaysia but also spend a lot of time in Laos, Hongkong, Taiwan...... and most of my family is still stuck in scandinavia so... If yoo can supply me with more spesification of what you ned info about I could try to be of assistens.Johan-Fredrik

author: neslekkim
author_rank: Super Contributor
timestamp: July 30, 2015, 10:42:58 am
content: Within EU, does it matter where you buy the item from?, no customs?, so if you buy from TME or some, it should be no problem?

author: LA7SJA
author_rank: Regular Contributor
timestamp: July 30, 2015, 12:23:12 pm
content: Norwegian:ONLes post 2 fra OP, jeg er ikke sikker på at han skal kjøpe men snarere at han har noe å selge. Snart natta her så jeg får komme meg tilbake til familien.Norwegian:OFFJohan-Fredrik

author: zapta
author_rank: Super Contributor
timestamp: July 30, 2015, 04:32:54 pm
content: Quote from: LA7SJA on July 30, 2015, 12:23:12 pmYour link is still good. He can sell on Amazon, especially if the high price of that analog Weller is typical in that market.

author: philipyi
author_rank: Newbie
timestamp: July 31, 2015, 03:59:10 am
content: Quote from: LA7SJA on July 30, 2015, 10:36:32 amHi, Johan, you are travelling a lot, how are you?what I need is some market information. I am a sales of soldering products.we are looking for distributors worldwide for our brand products.so I want to know in Norway, Thailand, Malaysia, also Laos, do you know some market players?thanks a lot

author: wxm145
author_rank: Contributor
timestamp: August 04, 2015, 06:58:57 am
content: dear friend, i think you can buy it on ebay or aliexpress
New Product of Hantek? Pen Handheld Oscilloscope? - Page 1
Forum section: electronics / general

author: beauty2003tt
author_rank: Contributor
timestamp: August 03, 2015, 05:09:51 am
content: I have found a new product in the website of Hantek.Pen storage oscilloscope.Does anyone have already tried it?https://www.youtube.com/edit?video_id=jNkzLzoX8cw&video_referrer=watch

author: ataradov
author_rank: Super Contributor
timestamp: August 03, 2015, 05:59:52 am
content: Your link goes nowhere, but going to their site direct shows some info. It looks bulky and inconvenient to use. I have no idea who would want that.Also, one of the features isQuoteWhose measurement?

author: kwass
author_rank: Frequent Contributor
timestamp: August 03, 2015, 06:12:42 am
content: Here's the link (I think):This looks like an idea gone terribly wrong, as in it's much harder to use than a regular scope or even a USB scope.

author: Lightages
author_rank: Unknown
timestamp: August 03, 2015, 06:21:23 am
content: I don't get the point of this thing. It is too bulky to use as a probe. With this size it should have a display and autonomous use. It is a fail IMHO.
Nest Protect... Anyone used one? - Page 1
Forum section: electronics / general

author: urbis
author_rank: Unknown
timestamp: August 02, 2015, 03:32:40 pm
content: The first generation of these is currently on clearance in Currys/PC World in the UK at £39.97.Bought a mains one the other day but not fitted it yet, anyone used one and have any feedback?

author: briandorey
author_rank: Regular Contributor
timestamp: August 02, 2015, 04:03:24 pm
content: We have the mains version and it does not get triggered by the cooking/burning like the old style smoke alarms did and it does work well to pick up real fires as we found by accident when some wood fell out of the wood stove and the alarm went off very quickly.
Question about HAKKO FX-951 - is this one a copy - Page 1
Forum section: electronics / general

author: gataka
author_rank: Newbie
timestamp: July 29, 2015, 11:03:38 am
content: Good day to all,I bought this station HAKKO FX-951 from chinas reseller. It is working well, but it feels little different , from what i had used previously (same model bought from UK).I was wondering, is this original HAKKO FX-951, if same one is familiar with the model, i will appreciate any help, here are some images :If needed i can dissemble and take a photo from inside.

author: wraper
author_rank: Unknown
timestamp: July 29, 2015, 11:14:48 am
content: 100% fake. You wont get genuine Hakko from China ever, local resellers widely sell fakes too. Genuine FX-951 have a cable from the stand to the back of the soldering station. Therefore check your other FX-951, it might be fake too as you didn't mention this cable.

author: GreyWoolfe
author_rank: Unknown
timestamp: July 29, 2015, 12:22:26 pm
content: If you are not buying from a Hakko authorized reseller-verifiable on their website-it is fake. Same goes for tips. Hakko seems to be the most copied/cloned product for some reason. By the way, I love my new 951 purchased from TEquipment.net with the EEVBlog discount.

author: Sjokolade
author_rank: Regular Contributor
timestamp: July 29, 2015, 03:19:54 pm
content: If you have pictures of the inside it would be interesting to compare them with an genuine unit.

author: frahul
author_rank: Contributor
timestamp: July 29, 2015, 03:51:19 pm
content: Its Fake.How much did you pay for it ?

author: gataka
author_rank: Newbie
timestamp: July 30, 2015, 05:16:29 am
content: $ 101.24I will disassemble the station and make a pictures. Where i can find a picture of the real thing , to compare it.And thank you for all your answers i appreciate it.

author: neslekkim
author_rank: Super Contributor
timestamp: July 30, 2015, 05:33:42 am
content: the third thread after yours:https://www.eevblog.com/forum/reviews/hakko-fx-951-review/

author: philipyi
author_rank: Newbie
timestamp: July 31, 2015, 03:48:03 am
content: Quote from: gataka on July 30, 2015, 05:16:29 amoh, unluck boy, sorry for you

author: Deathwish
author_rank: Unknown
timestamp: July 31, 2015, 07:14:57 am
content: I am glad you all used the word fake, it gets me when people use the word clone, a clone is an exact copy of another, something these chinese knock offs is not.

author: gataka
author_rank: Newbie
timestamp: July 31, 2015, 10:55:08 am
content: Hello again,Ok ,I can agree, not a clone, but fake, here it is , fake as f*ck :

author: frahul
author_rank: Contributor
timestamp: July 31, 2015, 01:45:07 pm
content: Can you please post pictures of the PCB. Does it have a Atmega MCU like the hakko FX-888D kockoffs ?
new arrival today - Page 1
Forum section: electronics / general

author: thefamilyman
author_rank: Regular Contributor
timestamp: July 27, 2015, 08:28:09 am
content: just a quick something arrived at work todaya 315KVA and 450KVA generator sets

author: Psi
author_rank: Super Contributor
timestamp: July 27, 2015, 10:15:13 am
content: If the silver foil had instead been gold you could have said it was a multi-billion dollar communications satellite
"copper hat" or shield over speaker center pole - Page 1
Forum section: electronics / general

author: paulc
author_rank: Contributor
timestamp: July 26, 2015, 08:15:57 am
content: During speaker "TEARDOWN" I found the cooper shield as shown in the picture.What is the purpose for that?Paul

author: PChi
author_rank: Frequent Contributor
timestamp: July 26, 2015, 08:43:38 am
content: I think that it is what Vance Dickason in the Loudspeaker Design Cookbook calls a 'Shorted turn' or 'Faraday Loop'. It is meant to reduce distortion caused by the modulation of the magnetic field by the voice coil current. The book also mentions that it decreases the voice coil inductance which should extend the high frequency response.

author: paulc
author_rank: Contributor
timestamp: July 26, 2015, 08:58:42 am
content: Sounds logical.Do you have some material that I can read about? (I am not going to buy the book for that)Paul

author: PChi
author_rank: Frequent Contributor
timestamp: July 26, 2015, 09:48:32 am
content: Unfortunately I don't have any suggestions as to where to look apart from other books.A loudspeaker incorporting the idea is described athttp://www.seas.no/index.php?option=com_content&view=article&id=107:h1658-04-mu10rb-sl&catid=46:prestige-midranges&Itemid=463As loudspeaker distortion doesn't seem to get much attention I guess that there is little information out there.

author: paulc
author_rank: Contributor
timestamp: July 26, 2015, 01:52:58 pm
content: Thanks,Paul

author: codeboy2k
author_rank: Super Contributor
timestamp: July 26, 2015, 10:22:01 pm
content: I didn't tell you this, but people store PDFs on their personal google docs storage, for their own personal use, and sometimes that leaks out into the Internet at large.But I didn't tell you thatSearch google forsite:docs.google.com Loudspeaker Design Cookbookfirst link

author: paulc
author_rank: Contributor
timestamp: July 27, 2015, 06:54:16 am
content: Surprisingly, I visited a friend of a friend of my far family and I found the book in a neighbour's computer.

author: codeboy2k
author_rank: Super Contributor
timestamp: July 27, 2015, 07:58:39 am
content: Quote from: paulc on July 27, 2015, 06:54:16 amSuch luck!
Delta 3d printer help!!! Convex Print surface! - Page 1
Forum section: electronics / general

author: Bobajake
author_rank: Contributor
timestamp: August 05, 2015, 04:11:55 pm
content: Okay so I am taking the hard road and building my own delta 3d printer and I've had a lot of problems and breakthroughs, But this problem I cant seem to get through...My printer is is convex and changing the smooth rod offset in MARLIN does nothing. I have checked to see that the eprom is changing when i adjust it and it is so that is not the problemI have all my testing in a spreadsheet its in google docs so I'll link it in. I am just really at a loss here.... Any help would be appreciated.Also I know the reprap forum would be a better place to go, but when i tried to create my account i verified it and then it said a Mod will email me or something and I never got an emailso that was not an option.Google spreadsheet Calibration Link:https://docs.google.com/spreadsheets/d/1bvVRm6QqOtgZ-hLfc-3S_BP_D9g2_30KHDgXOYKpEZE/edit?usp=sharingIt has the marlin firmware and im using pronterface.

author: ElektroQuark
author_rank: Unknown
timestamp: August 05, 2015, 04:15:25 pm
content: Any image?I suppose you are printing a test block and the top surface is convex. If so, you are feeding to much. Low the feed rate in your software.

author: Bobajake
author_rank: Contributor
timestamp: August 05, 2015, 05:33:14 pm
content: Thank you but no... if you look at the spreadsheet when the extruder is in the center it is 5mm higher than when it is at the poles.

author: ElektroQuark
author_rank: Unknown
timestamp: August 05, 2015, 05:36:59 pm
content: Ooops! Sorry.I was thinking about a cartesian printer and it is not the case.Sorry again.

author: Bobajake
author_rank: Contributor
timestamp: August 05, 2015, 05:42:21 pm
content: Haha no its okay, you solved a problem that i would have had down the road

author: singapol
author_rank: Frequent Contributor
timestamp: August 08, 2015, 02:40:42 am
content: Quote from: Bobajake on August 05, 2015, 04:11:55 pmDid you check your spam folder...it could be there...your email activation.
Tenma Soldering Station : Is it good? - Page 1
Forum section: electronics / general

author: vidyasagar
author_rank: Newbie
timestamp: July 12, 2015, 12:37:05 am
content: I am planning to buy a new soldering station and recently have come across this particular model : Tenma AT907-938D.Datasheet -http://www.farnell.com/datasheets/1676798.pdfBy the way, I am student from India and was looking for something economical and at the same time dependable.Are there any other models which would be worth buying and also aren't too expensive ?

author: RobertHolcombe
author_rank: Frequent Contributor
timestamp: July 12, 2015, 07:54:03 am
content: Hakko FX-888/FX-888D and Weller WES51/WESD51 are the usual recommendations for entry level soldering stations, but they are significantly more expensiveI have no experience with Tenma so can't offer any opinion. They seem to offer similar products as Atten, Aoyue, etc, but they're being sold by Farnell/Element14, hopefully someone can comment on the build quality

author: bitwelder
author_rank: Super Contributor
timestamp: July 12, 2015, 10:24:42 am
content: The Tenma AT907-938D seems to be a rebranded (as Tenma is basically made of rebranded items) Atten 938D.So check on the net for reviews of the Atten unit (Dave made also a review/teardown)

author: amyk
author_rank: Super Contributor
timestamp: July 12, 2015, 01:53:15 pm
content: If you want that style of iron for cheap get a 936 clone instead, it uses more standard parts than the 938.

author: zapta
author_rank: Super Contributor
timestamp: July 12, 2015, 06:29:59 pm
content: Tenma is a Darnell brand.

author: picandmix
author_rank: Frequent Contributor
timestamp: July 12, 2015, 06:58:46 pm
content: If you just add ATTEN to that model number you come up with the original unithttp://www.batronix.com/shop/soldering/Atten-AT938D.htmlAs said, you can check a lot of reviews on it to see if it is worth the money.My choice would be a cheap 936 clone which works well for me or if you are doing a lot of soldering and want a much better quality then you have to start looking at Hakko Fx 888d type units, but only buy the Hakko from an authorised dealer as there are too many clones out there,http://www.ebay.in/itm/NEW-Original-all-rounder-Best-Quality-LK936-Soldering-Station-/121610264734?pt=LH_DefaultDomain_203&hash=item1c5089609e

author: vidyasagar
author_rank: Newbie
timestamp: July 20, 2015, 11:01:00 am
content: Thanks a lot!

author: picandmix
author_rank: Frequent Contributor
timestamp: July 20, 2015, 11:59:15 am
content: So which one have you gone for ..?

author: urbis
author_rank: Unknown
timestamp: July 23, 2015, 03:14:28 pm
content: Maplin also offer this under their Precision Gold brand, frequently on promotion at £39.99, seems a decent iron.

author: Shock
author_rank: Super Contributor
timestamp: July 24, 2015, 02:01:38 pm
content: It's just another Chinese clone of a Hakko 936 with a fancy display, don't get fooled into thinking these will give any better performance than any other of the other half dozen or so Chinese clone brands and their rebadged versions.
3M/SCS 8200 or 8800 ESD Mat - Page 1
Forum section: electronics / general

author: luky315
author_rank: Regular Contributor
timestamp: July 20, 2015, 08:18:54 am
content: I need new ESD mats. This time the really good stuff... But I am not sure if the 3M (now SCS?) 8200 (Vinyl) or the 8800 (Elastomer) series is better for general purpose use.Any experiences with this materials?

author: GreyWoolfe
author_rank: Unknown
timestamp: July 20, 2015, 12:54:01 pm
content: You don't want vinyl. The 2 layer rubber is your best bet.

author: dadler
author_rank: Unknown
timestamp: July 20, 2015, 07:38:02 pm
content: You want rubber. I got mine here:http://www.all-spec.com/products/TM8811.html

author: luky315
author_rank: Regular Contributor
timestamp: July 22, 2015, 04:02:24 pm
content: Thanks! I ordered the 8800.
Plantronics SAVI OLI hack? (online indicator for headset)  - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: July 18, 2015, 05:53:53 pm
content: Hey Guys,Not sure if im here in the correct place, but maybe someone could help me out.I have a Plantronics SAVI W740 headset. For the headset you canbuya OLI (online indicator), basically a LED that lights up when you are on the phone. Besides the 30USD it seems a nice little thing for a DIY project.It seemed pretty straight forward, but then it isn'tA link to the accessory:http://www.plantronics.com/us/product/online-indicator-saviThe OLI connects via 3.5mm stereo jack. So i thought, this is easy, make myself some leds and i have a awesome OLI. But hell no! When i measure the jack, it has 5V on one and 8V on the other pin. The 5V some to fluctuate a bit (between 4.8-5.1).Now maybe the is a 'common' thing' in telephone land, but i have not a clue how this should work. Whats the magic :sAnyone that could shed some light on this matter?Thanks!
Low volume wire processing?   - Page 1
Forum section: electronics / general

author: rx8pilot
author_rank: Super Contributor
timestamp: July 17, 2015, 07:34:18 pm
content: I have been needing more and more wires processed lately and looking for better tools to measure/cut and strip low-volumes (by production norms) of wires.Typical setup:16-24 AWG30-50pcs of 8 different types of stranded wires.length from 1" - 8"With normal hand tools, this is a chore. Wire processing machines are very expensive and are targeted at far higher volumes. I am hoping for some manual fixtures and easy stripping tools to take a step up - but not all the way to a full production wire processing station.I don't have any reference for pricing, but was hoping to find a solution for <$1000 US if that is possible. NOT looking for full automation, just some nice hand/manual tools that will take the sting out of cutting stripping a few hundred pieces at a time.Any ideas?

author: robrenz
author_rank: Super Contributor
timestamp: July 17, 2015, 07:39:51 pm
content: This is what I made to scratch my itch

author: rx8pilot
author_rank: Super Contributor
timestamp: July 17, 2015, 07:47:39 pm
content: Great solution! love that. How much fabrication did you have to do? I don't mind machining some pieces ( I am a a 'near' master' machinist with 5 axis CNC's).EDIT: I only watched the first 5min, you may have covered those questions in the video.EDIT 2: Bounced through the rest of the video - you put a ton of effort into that. Nice work. I wish someone had a something like it for sale.

author: robrenz
author_rank: Super Contributor
timestamp: July 17, 2015, 07:51:35 pm
content: Watch the whole video and I think you will be able to make your own. If you have any questions after that let me know.

author: rx8pilot
author_rank: Super Contributor
timestamp: July 17, 2015, 10:24:23 pm
content: There are only a few people that can pull off DIY like that. Clever and simple design.Do you have any tricks for stripping all those wires?
Heineken speaker crate - Page 1
Forum section: electronics / general

author: rollatorwieltje
author_rank: Unknown
timestamp: July 16, 2015, 09:39:44 pm
content: So someone gave me this Heinkeken speaker crate. It claims to be a "near field audio amplifier". You basically play some audio on your phone and then place it on top of the box, with the phone speaker over the music note symbol. It actually works surprisingly well. Could actually be useful for conference calls if your phone doesn't have a reasonable speaker.At first I thought it was just a microphone, but it wouldn't actually respond to any audio at all, except my phone. So it turns out it doesn't use a microphone, it actually amplifies magnetic fields detected by those 2 coils. Not just music of course, it can also detect mains wiring in walls and other magnetic fieldsThe USB port is just for charging, there's a small LiPo pack inside.
TV character generator - Page 1
Forum section: electronics / general

author: pmaggi
author_rank: Contributor
timestamp: July 12, 2015, 11:50:00 pm
content: I just find this in youtube... it looks interesting....It seems to be a character and graphics generator based on a serial input... a good use for old tv sets...

author: Deathwish
author_rank: Unknown
timestamp: July 13, 2015, 12:59:12 am
content: How can you Just find this on youtube when your username is stamped on the silkscreen of the board.

author: pmaggi
author_rank: Contributor
timestamp: July 13, 2015, 11:55:09 am
content: Pay attention... the board says "Marcelo Maggi".... just because it happen to have the same last name than me, it doesn't means it's me... my name is Pablo as you can seen in my profile.I was searching my name on youtube (wasting my time) and I found this... it seemed interesting to me and wanted to shared it... but you can think whatever you want.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: July 15, 2015, 10:55:08 pm
content: What's interesting is that we've come full circle: my first computers all plugged into a TV anyways.
Purpose of BNC pigtails? - Page 1
Forum section: electronics / general

author: mtdoc
author_rank: Super Contributor
timestamp: July 16, 2015, 02:30:50 am
content: When I picked upthis scopea few months ago, it came with a drawer full of cables, including an unopened bag full of these BNC pigtails. The cable is RG-59.I've cut a few up to use the panel mount female BNC connectors but I am wondering if they are better served to another purpose.Anyone know what their intended use is?

author: Whales
author_rank: Super Contributor
timestamp: July 16, 2015, 03:13:38 am
content: Sacrificial connectors? Ie you leave one permanently connected to your equipment so the BNCs on the equipment don't wear.

author: RobertHolcombe
author_rank: Frequent Contributor
timestamp: July 16, 2015, 07:35:37 am
content: Extending any rear BNC connectors for easier access?

author: fcb
author_rank: Super Contributor
timestamp: July 16, 2015, 08:38:46 am
content: Quote from: Whales on July 16, 2015, 03:13:38 am+1

author: LabSpokane
author_rank: Super Contributor
timestamp: July 16, 2015, 03:01:32 pm
content: That's a stub with a bulkhead connector for getting from a radio inside a box to an antenna outside the box. Those look nice. I wouldn't chop them up.

author: mtdoc
author_rank: Super Contributor
timestamp: July 16, 2015, 06:12:53 pm
content: Thanks for the replies and suggestions.

author: TimFox
author_rank: Super Contributor
timestamp: July 16, 2015, 08:38:22 pm
content: Note that RG-59/U is 75-ohm coaxial cable.Normally, connections to scopes use 50-ohm impedance terminations for critical signals (e.g., RG-58/U) but video applications usually use 75 ohms.Either is fine, but don't mix them on one signal.
Free Bit for Portosol Soldering Iron - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: July 13, 2015, 08:31:50 pm
content: If anybody has a Portosol gas soldering iron (one of the orange devices about 15cm long) I have a free unused bit for you. I stopped using mine years ago and I just found an unused bit at the bottom of a box.Send me a PM with your address, first one to reply gets it.

author: McBryce
author_rank: Super Contributor
timestamp: July 13, 2015, 08:43:15 pm
content: PM SentMcBryce.

author: German_EE
author_rank: Super Contributor
timestamp: July 14, 2015, 01:59:44 pm
content: A home for the bit has been found, no more replies please.