hybridfree/eevblog-posts huggingface dataset:
Needed: A Precision Resistor Assortment - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: November 05, 2011, 09:50:39 am
content: Greetings EEVBees:--Could anyone please tell me where to obtain a selection of +- 0.1% and +0 1% resistors. Any wattage. Thanks."It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge. "Enrico Fermi 1901 1954Best RegardsClear Ether

author: EEVblog
author_rank: Unknown
timestamp: November 05, 2011, 10:20:49 am
content: Digikey have 0.1% SMD kits:http://search.digikey.com/us/en/cat/kits/passive-resistors/2490615?k=resistor%20kitDave.

author: SgtRock
author_rank: Unknown
timestamp: November 05, 2011, 11:10:26 am
content: Dear Dave:--Thanks very much for the tip. I can now see by the prices and parts count, that I have been living in a dream world. I guess I will have to settle for a few 1 offs. Thanks for curing my ignorance.--I love you new lab space. All you need now is a white lab coat, some large black framed glasses, and a clipboard."He was born ignorant, and has been losing ground ever since." Fred AllenBest RegardsClear Ether

author: EEVblog
author_rank: Unknown
timestamp: November 05, 2011, 11:16:17 am
content: Quote from: SgtRock on November 05, 2011, 11:10:26 amClose enough?Dave.

author: SgtRock
author_rank: Unknown
timestamp: November 05, 2011, 12:22:42 pm
content: Dear Dave:Excellent characterization. Very funny. Charming actress. Indeed this is the first sight I have had of Dave Jones' nincompoop alter ego. The Bermuda shorts in combination with the lab coat add a delightful extra tinge of nincompoopedness to the character. All you need add is a silly name Ala Wodehouse, like Augustus "Gussie" Fink-Nottle, lover of newts, a ridiculous British accent for your speaking parts and a chipmunk expression, when speaking. You could have a future in comedy. I do believe I prefer the lab glasses, although I would have to see the large black frames to be sure."I could see that, if not actually disgruntled, he was far from being gruntled."P. G. WodehouseBest RegardsClear Ether
UK Wind Power FIT (Feed In Tariff) Hits Shan - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: November 04, 2011, 08:30:45 pm
content: Greetings EEVBees:--Just a day or two ago, I predicted that there would be Hell to pay when the balloon went up on the Wind Power Scam. Turns out it already has. Truly, the FIT (Feed In Tariff) has hit the shan or rather the Upwind Wind Turbine with active yaw control. It seems the chickens have come home to roost, on non-rotating turbine blades, so to speak, as yet another government perpetual motion Ponzi scheme gangs aft agley."And, quite often during the December cold snap, wind plants used more electricity than they generated"--See the below link for the complete article from "TheRegister":http://www.theregister.co.uk/2011/03/22/wind_abnormal_fail/--Meanwhile, back in Sunny Spain;"Incredibly, Spain pays more in subsidies for renewables than the total cost of energy production for the country."http://www.theregister.co.uk/2010/06/17/spain_sustainability_scam/"I were better to be eaten to death with a rust than to be scoured to nothing with perpetual motion."William Shakespeare 1564 1616Best RegardsClear Ether
Cheap Cortex-M4 board from ST available - Page 1
Forum section: electronics / general

author: Jope
author_rank: Regular Contributor
timestamp: November 04, 2011, 08:33:06 pm
content: The new STM32F4DISCOVERY board from ST is available now:http://www.st.com/internet/evalboard/product/252419.jspYou can get it from Digikey for $19.50.

author: NiHaoMike
author_rank: Super Contributor
timestamp: November 05, 2011, 01:16:03 am
content: I got one for free when they had the promotion. Unfortunately, it looks like actually doing something useful with it is a lot harder than any other board I've worked with.
LED display driver. it seems to me microchip pinout is wrong. Is it? - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: November 04, 2011, 09:59:43 pm
content: Hello there,If you look at the pin outs for either package. It says that the 1000's digit has a pin called AB4. I assume they are saying to parallel segment a and b. But then It wouldn't be a 3 1/2 digit driver. It would display the top and right-top segment, and not the right-top and right-bottom segment forming the decimal number 1.Surely the pin should have been called BC4? And have they got the rest of the segments messed up as well? Or are they using a different kind of system than the one I am using (Wikipedia:http://en.wikipedia.org/wiki/Seven-segment_display)http://ww1.microchip.com/downloads/en/DeviceDoc/21455C.pdfWhat are your thoughts?Thanks.M

author: king.oslo
author_rank: Frequent Contributor
timestamp: November 04, 2011, 11:36:21 pm
content: Problem solvedX 1/2 displays have special annotation for the first letter.A and b refers to the two halves of digit 1.M
Potentiometer with switch - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: November 04, 2011, 11:11:06 am
content: Hello there,I have bought some Bourns multi-turn pots and some knobs. I have noticed that on some devices, when you press what could be a potentiometer, you switch some kind of functionality.What kind of push button is normally used for this, and where is it placed in the assembly?Thank you for your time.Kind regards,Marius

author: sub
author_rank: Regular Contributor
timestamp: November 04, 2011, 11:20:04 am
content: I've not seen one on a pot, but rotary encoders often have them built in. Mounting one separately would probably be overly fiddly.

author: Simon
author_rank: Unknown
timestamp: November 04, 2011, 11:22:59 am
content: I think the switch is usually on the back of the pot, sometimes in it's own housing

author: FreeThinker
author_rank: Frequent Contributor
timestamp: November 04, 2011, 11:31:19 am
content: Have a look at thesehttp://www.omeg.com/products.htm#switchesQuite a common item

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: November 04, 2011, 12:10:40 pm
content: Alot of devices today have such instaled (example radios) to turn the appliance on with volume pot as example

author: king.oslo
author_rank: Frequent Contributor
timestamp: November 04, 2011, 02:40:00 pm
content: Yes, is it possible to buy a switch like this for the pots I already have?Thanks.M

author: david77
author_rank: Frequent Contributor
timestamp: November 04, 2011, 04:44:47 pm
content: Pots with a "turn-to-switch-on" switch are standard items and have been for many decades, see the link above or have a look at Piher pots.So far I have not seen off the shelve pots with the "push-pull" variety of switches like they are often used in scopes.Also I don't think there is an easy way to get a switch function added to a standard pot, you would have to make up something mechanical to add this feature - seems to be too complicated to be worth doing, IMHO.

author: IanB
author_rank: Super Contributor
timestamp: November 04, 2011, 05:15:05 pm
content: Quote from: king.oslo on November 04, 2011, 02:40:00 pmI don't think so. You buy the part as a complete assembly, like this for example:http://www.bourns.com/pdfs/PDB183.pdf
Nerdkits Talking Caliper - Helps Vision Impaired Engineer Take Measurements  - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: November 08, 2011, 12:24:17 pm
content: Congratulations to Nerdkits for putting electronics to good use! Basically it is a talking caliper letting a vision impaired engineer take measurements. Caliper manufacturers are delighted to sell you interface cables for big bucks yet none of them have been witty enough to think of this.Check here for details:http://www.nerdkits.com/videos/talking_calipers/

author: Armin_Balija
author_rank: Regular Contributor
timestamp: November 10, 2011, 05:02:08 am
content: That's truly inspiring.. that man deserves a medal for all the hard work he put in.Ahem.. also the audio caliper is pretty awesome as well. Seeing it as a prototype is interesting and I can make out what he's done with it, it's interesting, nothing too complex. Still interesting that noone's done this before. I hope he does something with it.

author: ChrisKiwi
author_rank: Contributor
timestamp: November 10, 2011, 08:42:22 am
content: A micro, finger mounted camera could be useful for a blind electrical engineer, then they could (for example) tell the difference between phase and neutral.
HIOKI non-contact metallic voltmeter...  What !!    - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 31, 2011, 11:44:04 pm
content: Probably its old news, but its best that way so to gather the results.Does any one have any experiences to share about this metallic DMM cases ?Quote

author: nukie
author_rank: Frequent Contributor
timestamp: November 02, 2011, 01:30:09 pm
content: I didn't look up what it was but carbon conducts electricity quite well.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 02, 2011, 02:46:56 pm
content: Well just the words : metallic non-contact ... it triggered my interest about it.Unfortunately I did not find much info about it at the HIOKI web site.
Agilent is discontinuing Handheld Tools in blue. NLA after November 30t 2011 - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 02, 2011, 11:08:48 pm
content: End of support life: March 1st, 2017Do not confuse warranty with support !!I bet that after this announcement, many nice units of the blue series will be soon on discounted price offers, all over the world = Great news.
Will silver plated wire wrap wire solder well with 63/37 tin/lead solder? - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: November 01, 2011, 04:17:41 pm
content: Hello,I was thinking of buying some wire wrap wire to solder dead bug style for prototyping. My local shop has some silver plated wire from OK industries.Will this solder well onto regular pcb and chips using 63/37 tin/lead solder?Thanks.Kind regards,Marius

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 01, 2011, 05:26:12 pm
content: Yes, it will be fine.
European competition 2012 stimulate young people -> electrical profession  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 30, 2011, 05:51:25 pm
content: http://www.aie-cye.eu/VSEI_Connecting_ideasDamn I am not that young !! LOLBut even at your 42 you do not run out of pleasures.Every age has it own pleasures.
WHSmith Kobo Touch Screen Ebook - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 29, 2011, 11:30:08 pm
content: Greetings EEVBees:--See below link for a review of the WHSmith Kobo Touch Screen Ebook, from the register website, see second link below.--This seems like a very interesting unit, but I will not buy till hear more about it. I wonder if DJ could get one of these for review; either from the supplier or a friend. I sure would not expect DJ to buy a copy of every device out there, just so we can see a review.http://www.reghardware.com/2011/10/26/review_whsmith_kobo_touch_e_book_reader/http://www.theregister.co.uk/"Reality is merely an illusion, albeit a very persistent one." Albert EinsteinBest RegardsClear Ether

author: joelby
author_rank: Frequent Contributor
timestamp: October 30, 2011, 11:44:47 am
content: My girlfriend bought one last weekend on a whim. It's a nice little unit, and nice to hold. I've got a Sony PRS-350, which requires you to use the Sony software or Calibre to load books on (a fact that has never bothered me), so being able to just drop epub files onto the USB drive the Kobo exports was a surprisingly nice touch.I'm not actually sure what the wireless bit is used for - maybe it facilitates automatic download of purchased e-books if you buy them through the Web site or Kobo app - but I assume it works because my girlfriend has been happily reading and buying books.
Rosin-core vs no-clean flux vs hydro flux - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: October 30, 2011, 01:29:12 am
content: Hello,It seems perhaps Multicore solder is minimizing rosin flux, and trying to manufacture more no clean flux cores.Does the rosin core flux stuff make any better joints? I have been working with no clean flux for a while, but never seen if the rosin flux is any better.What about hydro flux?What do you think?Thanks.M

author: IanB
author_rank: Super Contributor
timestamp: October 30, 2011, 01:52:38 am
content: For practical purposes you may consider no-clean flux and rosin flux to be the same thing. Both kinds of flux are chemically similar and have similar properties. Neither kind of flux needs to be cleaned after use if your only concern is corrosion. However, if you are concerned about appearance, residual flux conductivity or conformal coating, then all flux needs to be cleaned after soldering including "no-clean" flux.In summary, you might as well assume rosin flux and no-clean flux are interchangeable.

author: king.oslo
author_rank: Frequent Contributor
timestamp: October 30, 2011, 01:57:46 am
content: What about hydro flux?M

author: IanB
author_rank: Super Contributor
timestamp: October 30, 2011, 02:02:47 am
content: Quote from: king.oslo on October 30, 2011, 01:57:46 amDon't know. Is it water soluble flux? If so, don't touch it for hobby and home use. It is very corrosive and it isrequiredthat you wash all flux residues off your board after soldering.
Opinion on flexible current probes? - Page 1
Forum section: electronics / general

author: Mike-Extech
author_rank: Newbie
timestamp: October 28, 2011, 09:29:19 pm
content: Those of you that use them - what's your opinion on the usefulness of flexible current probes versus clamps? What would you rather have? Why?

author: PetrosA
author_rank: Frequent Contributor
timestamp: October 28, 2011, 10:45:40 pm
content: Mike,Personally I am not interested at all. I do mostly resi and light commercial work, and the number of times I've needed to take measurements on large paralleled feeders is so small it's not worth mentioning. I can't see any other use for that kind of probe. OTOH, I have an Agilent U1211A which has a huge jaw (enough for me to wrap paralleled 500 MCM feeders under stacked lugs in a CT cabinet) but many of the clamp meters out there couldn't do that.
64-bit ARMv8 announced - Page 1
Forum section: electronics / general

author: McMonster
author_rank: Frequent Contributor
timestamp: October 28, 2011, 01:18:35 pm
content: Another interesting news about ARM architecture, processors with 64-bit instruction set are coming:http://www.arm.com/about/newsroom/arm-discloses-technical-details-of-the-next-version-of-the-arm-architecture.php
Aven iLoupe XL - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 27, 2011, 08:17:38 pm
content: Did somebody use it? Im planing to grab it from examination of shorts on pcb boards on smd level. Since it would be higly wished to work on field it sems like a good choice.Note the XL older model, not the new one xl2

author: Bored@Work
author_rank: Super Contributor
timestamp: October 27, 2011, 09:19:28 pm
content: Dave used some stuff like this in a few videos. IIRC he wasn't too enthusiastic about it.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 28, 2011, 03:27:15 am
content: Quote from: BoredAtWork on October 27, 2011, 09:19:28 pmThanks i hope Dave will see this topic

author: EEVblog
author_rank: Unknown
timestamp: October 28, 2011, 05:11:36 am
content: No, haven't used it, sorry.I have an Extech unit.Dave.
Polaris Invests In Electric Motorcycle Company. - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 27, 2011, 01:08:10 pm
content: Greetings EEVBees:http://latimesblogs.latimes.com/money_co/2011/10/polaris-investment-in-brammo.html--Are those training wheels?"Business is never so healthy as when, like a chicken, it must do a certain amount of scratching around for what it gets." Henry FordBest RegardsClear Ether

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 27, 2011, 01:45:16 pm
content: No no no no, This is too sport for my taste of riding.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 27, 2011, 02:16:09 pm
content: Quote from: Kiriakos-GR on October 27, 2011, 01:45:16 pmBut the only way if you want your Adrenaline in the sky
Good PCB company - Page 1
Forum section: electronics / general

author: Tony R
author_rank: Regular Contributor
timestamp: October 30, 2011, 02:03:17 pm
content: I am looking for a PCB manufacture that can generate 4 layer boards for rather cheep. We are looking for about 2-4 boards that are about 3 by 4 inches. Does anyone know of a good website (based in the us preferably) that can do this for about 150USD all said and done?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 30, 2011, 04:12:02 pm
content: http://dorkbotpdx.org/wiki/pcb_order

author: slateraptor
author_rank: Frequent Contributor
timestamp: October 31, 2011, 05:12:15 am
content: If you're a student, Advanced Circuits has a fair deal:http://www.4pcb.com/index.php?load=content&page_id=131$66 per board + $18 shipping...unless you meant $150 tops for 2-4 boards, then meh.

author: dfnr2
author_rank: Regular Contributor
timestamp: October 31, 2011, 01:53:46 pm
content: I'll second Advanced Circuits. I use them frequently. Their $66 each 4-layer prototype service is great, especially considering the turn time is less than a week. I've shopped around and still think it's hard to beat.Dave

author: benemorius
author_rank: Regular Contributor
timestamp: November 04, 2011, 12:16:42 pm
content: With dorkbotpdx you'll get 3 4x3 inch boards for $120. That's with soldermask and both silkscreens, too. The only big downside is the variable and lengthy turnaround time. I seem to recall that he uses gold phoenix, but don't quote me on that. I haven't ordered any in a while, but my last boards came back purple. That sure beats the heck out of green. Well... I suppose that's an opinion.

author: sebastys
author_rank: Newbie
timestamp: November 04, 2011, 10:42:39 pm
content: http://www.eurocircuits.com/if you live near.=)
Forget the quadcopter, this looks way too cool! - Page 1
Forum section: electronics / general

author: DrGeoff
author_rank: Frequent Contributor
timestamp: October 27, 2011, 09:51:55 am
content: Japanese labs have developed a flying orb that looks really stable.http://www.smh.com.au/technology/sci-tech/japanese-engineers-develop-flying-robotic-orb-20111027-1mkxi.html

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: October 27, 2011, 10:52:22 am
content: Looks like this essentially a vertically starting 3D-plane in an orb. Imagine an orb around this:http://www.electrifly.com/parkflyers/gpma1135.htmlThe problem with this will be the battery time as when hovering, one (relatively) small propeller has to create all the lift. Also the torque has to be compensated via the control surfaces, so a part of the energy to create the lift is always lost to keep the device from spinning. Though the torque is smaller than that of a helicopter's rotor for sure.Anyway, I would assume that the shown prototype will not be able to hover for more than a few minutes. A classical helicopter should be much more efficient when hovering.Looks pretty stable though and of course it can really fly horizontally compared to a quadcopter.

author: Achilles
author_rank: Regular Contributor
timestamp: October 27, 2011, 10:53:36 am
content: very cool!! Flying and moving around on the ground as a ball. Would be interesting about the Payload of such a thing and of course the stability in crosswinds.Finally I can begin to build my Death-Star
Maxwell HSN-1000: The ¬NED pin goes low on detection of a nuclear detonation - Page 1
Forum section: electronics / general

author: ndictu
author_rank: Regular Contributor
timestamp: November 01, 2011, 02:14:22 pm
content: Datasheet:http://www.maxwell.com/products/microelectronics/docs/HSN1000_REV3.PDFQuote from:http://www.extremetech.com/computing/102633-how-to-make-sure-your-computer-and-the-internet-survives-a-nuclear-holocaust(Source:http://news.ycombinator.net/item?id=3179645)

author: deephaven
author_rank: Frequent Contributor
timestamp: November 01, 2011, 02:35:26 pm
content: Be careful:"Maxwell Technologies’ products are not authorized for use as critical components in life support devices or systemswithout express written approval from Maxwell Technologies."

author: Time
author_rank: Frequent Contributor
timestamp: November 01, 2011, 02:42:47 pm
content: ok? whats the point of this post?

author: ndictu
author_rank: Regular Contributor
timestamp: November 01, 2011, 02:47:09 pm
content: Quote from: deephaven on November 01, 2011, 02:35:26 pmI don't think there has ever been a product sold without an extensive legal mumbo-jumbo making sure you have no chance of wining a legal battle.When this thing is used in critical/life stuff the company that makes this product probably does it's own testing.

author: JuKu
author_rank: Frequent Contributor
timestamp: November 01, 2011, 03:01:19 pm
content: Quote from: Time on November 01, 2011, 02:42:47 pmI think it is interesting to find out that there is such a thing. How do they do production testing? How would you know if it works or not?

author: Unknown
author_rank: Unknown
timestamp: November 01, 2011, 03:06:52 pm
content: Quote from: ndictu on November 01, 2011, 02:47:09 pmOr they get written approval as part of the contract. These aren't exactly the type of devices you buy from Digikey.Quote from: JuKu on November 01, 2011, 03:01:19 pmI believe it just detects radiation, so they could use a calibrated radiation source, the same type as used for Geiger counters.

author: Time
author_rank: Frequent Contributor
timestamp: November 01, 2011, 03:43:08 pm
content: Put it next to a Z-pinch being driven with mega-amps like the Z machine.http://en.wikipedia.org/wiki/Z_machine

author: DaveW
author_rank: Frequent Contributor
timestamp: November 01, 2011, 08:30:53 pm
content: Almost every company has that or a similar disclaimer, basically they won't take any liability, beyond conforming to specs at a reasonable level of confidence. Although a few companies like Bosch will actually refuse to sell to you if you are building life support systems-shame for us at work as they make very useful accelerometersQuote from: deephaven on November 01, 2011, 02:35:26 pm
Manual/Schematic Tektronix 2225 - Page 1
Forum section: electronics / general

author: energizer
author_rank: Newbie
timestamp: October 23, 2011, 04:29:46 pm
content: Hey DaveI'm searching for a manual/schematic for the tektronix 2225where did you get your manual from?greetings, energizer

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: October 23, 2011, 04:52:46 pm
content: I bought one yesterday, actualy..There are more of them on the docks of the ebay..or You can download one free:http://www.eserviceinfo.com/index.php?what=search2&searchstring=tektronix+2225

author: energizer
author_rank: Newbie
timestamp: October 24, 2011, 07:03:53 pm
content: Hi thank you
eZ430 Chronos watch for $24.50 shipped @ tideals.com - Page 1
Forum section: electronics / general

author: slateraptor
author_rank: Frequent Contributor
timestamp: October 26, 2011, 05:27:11 am
content: As if their Q3 losses weren't bad enough, TI is offering 50% off shipped for a Chronos to the first 500 takers...make that 499.MSP430 = winning

author: Kiske
author_rank: Newbie
timestamp: October 26, 2011, 12:11:30 pm
content: Ok, my first post!I've got one at the last deal and it's a pretty nice kit for the price, but I have difficulties finding a use for it.I really miss bluetooth, the connectivity gets a little limited with the subGHz RF. I would love to be able to connect it to my android phone, htpc, computer and so on, and it's sad that it isn't plausible.I got the Sony Ericsson LiveView just to get that bluetooth ability, but that was a major dissapointment. Buggy piece of crap... Short batterylife, bugs everywhere, dropping connection all the time and no support to mention really... Seems it was a "release and forget" product.If anyone have any fun projects using the Chronos to share, please do, i really think it's a nice device despite it's shortcomings and I would love ideas.
EEV email notification about PM messages ??  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 22, 2011, 05:12:35 pm
content: Well I do not get allot of PM but , I am trying to see if there is any setting so to get an email notification when ever I get one,and I can not find it !!Any ideas ?

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 22, 2011, 08:00:46 pm
content: its there, keep searching. click all the member profile etc etc, cant remember where. i'm notified if someone send me a PM.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 22, 2011, 09:12:30 pm
content: Ok got it but !!* EEVblog Electronics Community Forum »* Profile of Kiriakos-GR »* Personal MessagingNotify by email every time you receive a personal message: it was set to always ... but it did not worked.Now I selected never .. save the setting ... reselectalwaysand saved my profile..Now just sent me some PM's so to test it ..Subject: testBody: 1234 etcThanks.
Microchip ships 10 billionth chip - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 20, 2011, 11:20:16 am
content: http://www.microchip.com/pagehandler/en-us/press-release/microchip-technology-delivers-10-billionth-pic-mic.htmlAt least as interesting is they mention shipping over a million devtools

author: johnmx
author_rank: Frequent Contributor
timestamp: October 21, 2011, 09:16:21 pm
content: There is no doubt that Microchip is a great example of a successful company.I wish them a great future.

author: deephaven
author_rank: Frequent Contributor
timestamp: October 21, 2011, 09:47:23 pm
content: Quote from: johnmx on October 21, 2011, 09:16:21 pmMe too. I've had great support from them.
CNC bit storage boxes - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 21, 2011, 10:25:34 am
content: As im acquring bits in bulk i wonder where to buy 1/8 bit storage boxes? There is nothing on ebay...

author: PeterG
author_rank: Frequent Contributor
timestamp: October 21, 2011, 10:37:19 am
content: There is a seller in USA that sells these bits in sets. Mine came in a plastic holder. Maybe he could point you in the rite direction.Regards

author: sonicj
author_rank: Frequent Contributor
timestamp: October 21, 2011, 11:04:56 am
content: you've got a cnc... make one!-sj

author: PeterG
author_rank: Frequent Contributor
timestamp: October 21, 2011, 11:19:19 am
content: MakerBot comes to mind as well......Regards
Arduino in space! - Page 1
Forum section: electronics / general

author: IanB
author_rank: Super Contributor
timestamp: October 20, 2011, 08:09:01 pm
content: Take a look at the electronics section pictured towards the start of the video:Skip to 3 minutes and watch full screen for a view the naked eye has never seen...

author: Armin_Balija
author_rank: Regular Contributor
timestamp: October 21, 2011, 05:35:22 am
content: That was AWESOME!! The second camera view where you could see the earth's edge was amazing. I wonder how much something like this would cost on a smaller scale. It looks like a lot of fun!

author: sonicj
author_rank: Frequent Contributor
timestamp: October 21, 2011, 06:13:41 am
content: Quote from: Armin_Balija on October 21, 2011, 05:35:22 ami don't believe its terribly expensive... a guy down the street from me is a avid rocket modeler and all of his stuff looks homebrew. i think the most costly element is the motors. i believe he said around $30usd a pop and he gets a couple thousand feet with a small payload. everything but the motor is re-usable (if you can find it).-sj

author: Achilles
author_rank: Regular Contributor
timestamp: October 21, 2011, 08:45:39 am
content: Yeah, that is some fun stuff. I really liked the back-facing camera, but sadly it got partly covered during the flight.I think launching that baby is really expensive (apart from all that Aluminium, GFK and Electronics for the bare body). It gives you some really cool video footage and it somehow reminds me of the Toshiba HD-TV with the chair and weather balloon....heheThey seemed to take care of a lot. I just saw a video on Youtube last weekend where somebody shot his homebrew Pershing (Aluminium with Wood Parts) up. Looked really cool until it crashed down several hundret meters ago.....no parachuteAt least you have a lot of paperwork with the government I think.

author: IanB
author_rank: Super Contributor
timestamp: October 21, 2011, 02:21:17 pm
content: Quote from: Achilles on October 21, 2011, 08:45:39 amIn the USA the system is fairly accommodating. The main thing you have to do is obtain permission from the FAA and have them close the airspace around the launch site so any unsuspecting aircraft don't get startled by your ground to air missile.

author: david77
author_rank: Frequent Contributor
timestamp: October 21, 2011, 02:29:09 pm
content: Um, why do I have to think about a Reliant Robin strapped to a massive rocket now?How do the rocketeers know in what area their used rocket will come down again? I wouldn't want to get hit on the head by some "space" debris. I'd think you'd need a fairly large open area to shoot a rocket into the sky and not have it hit someone when it comes down again, right?
Idea For New Product Or Kit, Possibly For DJ - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 20, 2011, 12:31:27 am
content: Greetings EEVBees:-- Everybody has or wants ESR measurement capability. I am not nearly expert enough to design one. But, I thought it would be nice to have a unit similar to the UCurrent which measures ESR. It would allow you to read out the ESR on your DMM. Does anyone think this is possible or a good idea? Your comments are solicited.--No doubt the DMM engineers have been thinking about ways to include ESR in DMMs for sometime now, but it must be a thorny problem. If DJ could sell a kit or product like the Ucurrent, call it the Uesr, it might be a big seller. Dave could even include his phone number so he could talk us through difficulties we might have with the unit."Marconi invented the radio but he had to wait years and years till anything decent was on." Johnny CarsonBest RegardsClear Ether

author: amspire
author_rank: Super Contributor
timestamp: October 20, 2011, 02:04:42 am
content: It could be interesting if it is very compact and plugs into the front of the DMM.As a separate floating box, I think it will just be too cumbersome. When you are using it, you are often diving into the depths of an old piece of hardware testing every electro you can get at. You don't want to be juggling multiple connected boxes and meters. You just want one thing with leads and a meter of some kind, and to my thinking, a plastic body.Also, the meter is really the minor part of the build. I am waiting on a $8 Sanwa moving coil multimeter (or probably a Sanwa clone no doubt) with a good 50uA meter to put my ESR circuit in. Being a moving coil meter, I can print up nice multicolored PASS/FAIL zones for different Cap sizes. The digital meter plugin will give you lots of digits, but you just don't need them - it is not an accurate reading without 4 wire measuring. You are trying to read sub-ohm impedance between oxidized solder pads on a PCB.It could easily cost me more then $8 source a good compact box with a 9V battery compartment, the 9v battery clip, the panel mounted 4mm banana plugs to go into the meter, and any other bits I get included with the $8 multimeter.Richard

author: EEVblog
author_rank: Unknown
timestamp: October 20, 2011, 03:33:19 am
content: Quote from: SgtRock on October 20, 2011, 12:31:27 am*snort*Dave.
Write a VHDL code display to 7-segment LED with BCD. Please help me! - Page 1
Forum section: electronics / general

author: nguyensum
author_rank: Newbie
timestamp: October 20, 2011, 02:07:17 am
content: Write a VHDL code to perform the function of multiplier which the inputs are from Dip Switch and outputs display to 7-segment LED with BCD.X : dip 1~4 represents value 0~15, display on 2 led seven segmentY : dip 5~8 represents value 0~15, display on 2 led seven segmentA=X*Y display on 4 led seven segmentThanks you so much

author: DrGeoff
author_rank: Frequent Contributor
timestamp: October 20, 2011, 02:32:17 am
content: Sounds like an assignment.Show us what you have written so far.

author: Bored@Work
author_rank: Super Contributor
timestamp: October 20, 2011, 05:54:13 am
content: Yes, see his other postings. He is "outsourcing" his homework to the forum. What a novel idea - not.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 20, 2011, 08:24:32 am
content: ...and too lazy or too stupid to google "vhdl 7-segment"

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2011, 10:26:12 am
content: thankfully this thread is still alive. i dont get it when people ask something, it get locked? if you dont care to help, then just ignore or post your "helpful" comments like above. "no rule no fear"?

author: Unknown
author_rank: Unknown
timestamp: October 20, 2011, 03:20:05 pm
content: Why waste a 109 people's time reading a thread that won't lead to anything positive? Either people will complain about the lazy topic starter or someone will do the homework and the topic starter will learn that cheating and being lazy is an effective tactic. They're presumably studying for something like EE, not an MBA.

author: IanB
author_rank: Super Contributor
timestamp: October 20, 2011, 04:09:03 pm
content: This exemplifies the new breed of engineering "design by Google". No wonder modern stuff is so often crap and fails to work properly.
Dennis Ritchie: 1941-2011. - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: October 13, 2011, 11:56:27 am
content: Quote

author: Ferroto
author_rank: Frequent Contributor
timestamp: October 13, 2011, 12:36:03 pm
content: First Steve Jobs now the father of UNIX and Cuserdel -r DRitchieuserdel -r SJobsRIP.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 14, 2011, 04:31:41 pm
content: Ritchie was a genius in Computing Science just as Einstein in Physics.http://en.wikipedia.org/wiki/Dennis_Ritchiehttp://forwardthinking.pcmag.com/linux-unix/289134-remembering-dennis-ritchie-software-pioneer#fbid=42tlYWenE5qhttp://cm.bell-labs.com/who/dmr/Code:#include <stdio.h>#include <stdlib.h>int main(){if (!c) { software = nil; }if (!software) {MAC = nil;UNIX = nil;WINDOWS = nil;PIC = nil;AVR = nil;MCU = nil;}if (!MCU) {iphone = nil;everything = nil;people = stone_age;};while (c) {printf("RIP Dennis.\n");};return END_OF_WORLD;}

author: slateraptor
author_rank: Frequent Contributor
timestamp: October 15, 2011, 02:04:55 pm
content: It's sad to see that NYTimes has relegated such tragic news to their "More Technology News" section. Oh, how society has failed miserably at properly honoring he who has quietly given so much to her.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: October 15, 2011, 02:06:20 pm
content: Bit of a bummer he's gone. But C lives on.

author: ellisg
author_rank: Newbie
timestamp: October 20, 2011, 02:31:35 am
content: I have read a lot of posts on one of the social networking sites concerning how Jobs have gotten more attention when he passed, far better from one of the pioneers of computer programming. Though how you are going to be cherished would not really be determined on how much work you put through but how you have touched users and inspired them. I mean, when it comes to the amount of work, I am certain that Ritchie would be getting the upperhand.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2011, 03:08:42 am
content: Quote from: slateraptor on October 15, 2011, 02:04:55 pmQuote from: ellisg on October 20, 2011, 02:31:35 amthis is the "hidden" truth of "money matters". its politics i'm speculating... "money politics" and "butt licking" stuffs. and Steve's demise (may he RIP) is also a good prove how money and science cannot buy everything.money = a system made by human in an attempt to try to make a perfect world
Any way to convert negative 18 VDC to positive 3.3 VDC ?  - Page 1
Forum section: electronics / general

author: Milacron
author_rank: Contributor
timestamp: October 15, 2011, 03:12:50 pm
content: Wierd question I know.... involves an older (1996) Hitachi 5.7" color LCD (Hitachi LMG9520RPCC-A, on a CNC router control) that for some reason used negative voltage (pin 7, VEE power supply for LC) but it's closest Hitachi replacement LCD uses positive voltage for VEE.Have already tried taking the positive voltage from another source on the control but still no data showing on the new monitor, and can't help but wonder if it's due to the negative voltage output on the control "doing nothing" not connected and throwing the data output into an error mode.

author: tinhead
author_rank: Super Contributor
timestamp: October 15, 2011, 03:35:23 pm
content: i doubt that there is any logic detecting the VEE consumption (but of course you can easily check this, just connect a4.7k resistor between VEE and VSS) - the reason why you didn't see anything is probably timing.Check the display datasheet and compare with the one you usinghttp://www.mikrocontroller.net/attachment/96841/LMG9520RPCC.pdf

author: Zero999
author_rank: Super Contributor
timestamp: October 15, 2011, 04:59:25 pm
content: A buck-boost converter can convert one voltage to the opposite polarity.

author: FenderBender
author_rank: Super Contributor
timestamp: October 15, 2011, 09:21:28 pm
content: I'd say an MC34063 could do it using the inverting mode...

author: Milacron
author_rank: Contributor
timestamp: October 16, 2011, 05:39:30 pm
content: Quote from: tinhead on October 15, 2011, 03:35:23 pmYou could be right about the timing but I couldn't see any significant differences in the timing of the old monitor with the new. But then I'm no expert in such matters. The new one is Hitachi SW14Q001....would you be so kind as to compare the timing graphs to see if you can find any difference that might matter in this regard ?http://www.datasheetarchive.com/SX14Q001-datasheet.html
Bench psu sockets only why! - Page 1
Forum section: electronics / general

author: Dataforensics
author_rank: Unknown
timestamp: October 19, 2011, 05:41:23 pm
content: Is there a reason other than to cut costs why so many modern bench power supplies only have sockets?I would much rather have banana posts, so you can clamp a bare wire.Tony

author: Unknown
author_rank: Unknown
timestamp: October 19, 2011, 06:10:26 pm
content: Guess it's partly a matter of personal preference. For me it's rare to use bare wires with binding posts, I usually use banana leads with alligator clips in that case. One issue with binding posts is that they usually don't fit the shrouded banana plugs used with most modern equipment like multimeters. I wouldn't be surprised if costs were the deciding factor, however.

author: Richard W.
author_rank: Regular Contributor
timestamp: October 19, 2011, 07:48:25 pm
content: QuoteThere are 4mm adaptors with cage-clampMulticontact KLS4http://www.conrad.de/ce/de/product/741554/Richard

author: ciccio
author_rank: Frequent Contributor
timestamp: October 19, 2011, 09:21:06 pm
content: They are safety sockets, to be used with safety plugs, like the one posted above by Richard W.I see them used mostly in German equipment, and I believe the reason is to have all cables in the lab with very high insulation (they are rated at 1000 V), with all the plugs protected against an accidental contact (no naked bananas).I think I've read somewhere that this is the only connector allowed by some safety standard, but now I could not retrieve any information.It is not an economic reason, they are more expensive than standard binding posts.The attached photos show a panel socket and a cable plug.
Free Audio Book The Lives Of The Engineers - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 18, 2011, 09:45:37 am
content: Greetings EEVBees:--Please see the below link for LibriVox public domain audiobook; "The Lives Of The Engineers" by Samuel Smiles. This book is an old biography of George and Robert Stephenson who constructed the first working locomotive, The Rocket. It was at this point in time when the Industrial Revolution took off like a rocket. They had coal. They had iron. They had the steam engine. But everything had to be transported by horse and wagon until...--The recording quality of this audio book is excellent. This kind of material is excellent for listening to while driving, biking, walking, working out. I use recordings like this one (nice and calm) to cover up neighborhood noise, when I am trying to sleep during the day. I set it just low enough to be intelligible and listen to it till I fall asleep. I hope you will enjoy. If I encounter other engineering or electronics related in the way of audio books, I will post.http://librivox.org/lives-of-the-engineers-george-and-robert-stephenson-by-samuel-smiles/"I sell here, Sir, what all the world desires to have—POWER." James Watt 1736 1819Best RegardsClear Ether
Parallel Printer Port to USB Printer Converter - Page 1
Forum section: electronics / general

author: clonecrp
author_rank: Regular Contributor
timestamp: October 14, 2011, 02:32:45 am
content: Hi all:I have a piece of test gear w/Parallel out and I want to print to a USB Printer instead of a parallel.Thoughts anyone ... ?Thanks!Doug

author: IanB
author_rank: Super Contributor
timestamp: October 14, 2011, 02:40:17 am
content: Quote from: clonecrp on October 14, 2011, 02:32:45 amYou're screwed?Basically, you can't do this with an off the shelf solution. USB has taken over the world. Your only options are to buy a printer with a parallel port, or replace the test gear with a newer model that has USB output.

author: joelby
author_rank: Frequent Contributor
timestamp: October 14, 2011, 03:49:57 am
content: Does the test gear have a GPIB port? You might be able to use that to download data to your computer, though unless you need to do a lot of printing, it'll be cheaper and easier to rescue a throw-away parallel printer.

author: Bored@Work
author_rank: Super Contributor
timestamp: October 14, 2011, 05:25:29 am
content: DIY:http://www-user.tu-chemnitz.de/~heha/bastelecke/Rund%20um%20den%20PC/USB2LPT/lpt2usb.en.htmOff the shelf: Scroll to the end of the above page.

author: IanB
author_rank: Super Contributor
timestamp: October 14, 2011, 05:35:33 am
content: Wow, some people have been very creative! That's a lot of work for a thing that is rarely needed.

author: clonecrp
author_rank: Regular Contributor
timestamp: October 17, 2011, 12:04:21 am
content: HI Guys:I can name several applications of converter. I originally considered a UART latch the data then stream to an CP2101 to convert TTL to USB.To have a completed device is dinomite ! Looks like BoredAtWork has the Idea...BTW the PLL out is for avery expensive hunk-o-gear ... to USB printer is supreme!More thoughts anyone ?
which forum software - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: October 17, 2011, 11:52:43 am
content: I will possibly be setting up a forum for my local area, which forum software would be recomended, this one (simple machines) seems good, can it be fresh installed ? I don't think my host has many forum options but i think most can be uploaded and installed can't they ? (I have done it before). I am not really in the mood for another spell with phpBB as i used it before and frankly it was a maze and a mess to administer.

author: amspire
author_rank: Super Contributor
timestamp: October 17, 2011, 12:09:28 pm
content: If your host is Cpanel based and they have an icon for Fantastico, then it probably has SMF under discussion boards.If so, install just takes settings seconds.If not, Simple Machines is designed to use minimum server resources, so you should be able to manually install it without needing help from the hosting company.Richard.

author: Simon
author_rank: Unknown
timestamp: October 17, 2011, 12:39:43 pm
content: it is not Cpanel based, I'll probably do a fresh install

author: Chet T16
author_rank: Frequent Contributor
timestamp: October 17, 2011, 03:36:28 pm
content: Are you looking for free?I upgraded my forum from phpbb to vbulletin a few years ago and haven't looked back.Most, if not all, only require adding a database, editing the config file to suit and uploading

author: MrPlacid
author_rank: Frequent Contributor
timestamp: October 17, 2011, 04:48:02 pm
content: Simon, last year I copied my smf folder straight to my server's (even though they had cpanel and smf). Then, I recalled, clicking on an installation file and it configured everything. After that I deleted the installation file. That was it.That said, I love those more expensive forumsQuote from: Chet T16 on October 17, 2011, 03:36:28 pm
Please help me, Write a VHDL code  - Page 1
Forum section: electronics / general

author: nguyensum
author_rank: Newbie
timestamp: October 18, 2011, 05:46:25 am
content: Hi everybody,Please help me write a VHDL code to compute the followingpolynomial equation:y=a5*X^5+a4*X^4+a3*X^3+a2*X^2+a1*X+a0Simulation Quartus IIThanks so much!

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: October 18, 2011, 09:06:21 am
content: Multiplication and addition should be directly supported by VHDL (at least for integer types). I guess all you need to do is to replace the "power of" by multiplication. E.g. replace X^3 by X*X*X etc.Of course it would be clever to use a local signal for this and multiply it by X each timer you need a higher potency.Then again, calculating a polynomial with integer types doesn't make so much sense honestly. If you need a "real" (floating point) type, this will get much more complicated. If you're using fixed point numbers, a normalizing division is needed for each multiplication.There is also a package for fixed point calculation named "IEEE.Fixed_Pkg"In theory, also a package for float calculations exists, namely "IEEE.Float_Pkg", but not every tools supports it and even if so, it creates very large and very slow blocks.Google shows that while Quartus can't synthesize real multiplications etc., there are so called megafunctions for this:http://www.altera.com/literature/ug/ug_altfp_mfug.pdf

author: nguyensum
author_rank: Newbie
timestamp: October 20, 2011, 02:02:49 am
content: Thanks you so much!You share for me document very good.Can you help me, please!Write a VHDL code to perform the function of multiplier which the inputs are from Dip Switch and outputs display to 7-segment LED with BCD.X : dip 1~4 represents value 0~15, display on 2 led seven segmentY : dip 5~8 represents value 0~15, display on 2 led seven segmentA=X*Y display on 4 led seven segmentThanks you so much

author: Zad
author_rank: Super Contributor
timestamp: October 20, 2011, 02:37:25 am
content: You seem to be mistaking EEVBlog for a do-your-homework service.

author: Simon
author_rank: Unknown
timestamp: October 20, 2011, 05:59:04 am
content: This topic will now be locked. I contacted the op asking him not to post homework.