hybridfree/eevblog-posts huggingface dataset:
Transistor Texter - Page 1
Forum section: electronics / general

author: nidlaX
author_rank: Frequent Contributor
timestamp: March 01, 2015, 03:44:52 am
content: *Standard message and data rates may apply.

author: free_electron
author_rank: Super Contributor
timestamp: March 01, 2015, 03:57:26 am
content: bahahaaaaaat least it is using a text-ool socket-edit- o h no .. event that is fake !! look carefully it says : TFXTDOL

author: Fsck
author_rank: Super Contributor
timestamp: March 01, 2015, 03:58:39 am
content: to be fair, they were only one letter off.

author: george graves
author_rank: Super Contributor
timestamp: March 01, 2015, 04:03:10 am
content: Also...the font...."Oh hey, this font looks nice, lets use this one!"

author: Stonent
author_rank: Super Contributor
timestamp: March 01, 2015, 10:45:23 am
content: You gonna text me those Hfe values or what?

author: PA0PBZ
author_rank: Super Contributor
timestamp: March 01, 2015, 11:35:41 am
content: It's obvious: If you lose the text on the part this thing is going to find it for you

author: madires
author_rank: Super Contributor
timestamp: March 01, 2015, 12:33:31 pm
content: Quote from: Stonent on March 01, 2015, 10:45:23 amLet's see. I could add a bluetooth module and send the results to your smartphone. And the smartphone's app could tweet or whatever it further on. Stonenet checked a PNP BJT with the Transistor Texter: Vf ... hFE ...It's time that T&M devices support social media

author: electr_peter
author_rank: Unknown
timestamp: March 01, 2015, 01:11:52 pm
content: Only off by one letter, not too bad. One more error and it would be very bad indeed...

author: SL4P
author_rank: Super Contributor
timestamp: March 01, 2015, 02:05:33 pm
content: Upon closer investigation... TWO letters!TFXTDOL

author: Howardlong
author_rank: Super Contributor
timestamp: March 01, 2015, 02:54:14 pm
content: yor transistor iz gr8 gain awesum

author: miguelvp
author_rank: Super Contributor
timestamp: March 02, 2015, 02:57:50 am
content: Quote from: madires on March 01, 2015, 12:33:31 pmThey forgot to implement the TEXT button it seems the unit is defective and only allows for TEST
Sunday topic: Pornhub's wankband (Fun) - Page 1
Forum section: electronics / general

author: Warhawk
author_rank: Frequent Contributor
timestamp: March 01, 2015, 07:08:37 pm
content: Another special projecthttp://youtu.be/RzjeAaLbM5kTake it easy, it is Sunday.

author: PGrant
author_rank: Newbie
timestamp: March 01, 2015, 08:18:08 pm
content: April fools is still a month away right?

author: SeanB
author_rank: Super Contributor
timestamp: March 01, 2015, 08:35:49 pm
content: At best I could probably charge a small 35mAh cell a day with that. After 2 days I would have blisters........you kind of are getting to the limits of energy harvesting there. Yes there is some wasted motion you can harvest, but it will be about enough to run a regular wrist watch. I think Rolex/Bulova/Timex still has a patent on that......

author: helius
author_rank: Super Contributor
timestamp: March 01, 2015, 08:53:16 pm
content: Talk about a wank product.On a similar note the town of Austell GA has proposed to pay its employees $5 an hour to exercise. MayorJoe Jerkinssays the plan is needed due to their skyrocketing health insurance costs. "It just keeps going up higher and higher," Jerkins said. "If they do it 100 times, they get $500 ... which is a good bit of money. But whatever we pay out should benefit the city by lowering the health insurance."

author: max666
author_rank: Frequent Contributor
timestamp: March 01, 2015, 09:37:31 pm
content: But ... but ... it won't be any good for fisting, the motion would be perpendicular to the valve chamber."dirty energy" ... I'm still laughing

author: John Coloccia
author_rank: Super Contributor
timestamp: March 02, 2015, 01:53:03 am
content: I'm going to wait for the Sony low noise version.
Lost in Space full size B9 robots available - Page 1
Forum section: electronics / general

author: VK3DRB
author_rank: Super Contributor
timestamp: February 28, 2015, 11:36:33 am
content: Spock might be dead, butThe Robotlives on...Very accurate replicas, looks like the design has been researched and they are beautifully machined.I want one. Wired deep in my conscience, I always wanted a B9 since I was about 8 years old. US $24,500 plus delivery. Probably close to AUD $40K delivered to Australia. A bit difficult to justify such an expenditure to the wife. I don't think the old "Haven't you seen that in my electronics room before?" trick would not work in this case. You might pull that one off with a multimeter, but not a full size robot.http://www.lostinspacerobot.com/http://www.lostinspacerobot.com/features.htmlhttp://www.lostinspacerobot.com/video.htmlRetro gone wrong...Maybe EEVBLOG members can do a bulk buy, with a tear-down by Dave. If a number of others are interested in buying one (OZ especially), maybe we can get a good deal.From the movie The Castle, "This is going straight to the pool room."

author: miguelvp
author_rank: Super Contributor
timestamp: February 28, 2015, 07:36:46 pm
content: That is cool and all, but I don't think Leonard Nimoy ever appeared in a Lost in Space episode, but since I didn't follow both shows religiously I might be wrong.$25K for that is quite a bit, but I guess some die hard fans might get one.

author: Tinkerer
author_rank: Frequent Contributor
timestamp: February 28, 2015, 08:47:16 pm
content: Yea, would be nostalgic for alot of people but for that price, I think I would want a brand new looking robot with additional features and stuff that did yardwork and what not. After all, that one cant cut my grass or rake leaves easily; would need upgraded arms.

author: cosmicray
author_rank: Frequent Contributor
timestamp: March 01, 2015, 04:31:02 pm
content: I got the impression they have been working on these since 2005. As of 2010, they were shipping completed units, but there was a comment made about the "economic downturn". No updates to the newsletter page since 2010.
Converting Dell PSU to Bench Supply Problem - Page 1
Forum section: electronics / general

author: otpowell
author_rank: Regular Contributor
timestamp: March 01, 2015, 03:16:08 pm
content: Hi all, I'm looking to convert an old power supply and use it as a bench supply. I had this all hooked up a week ago and was working fine. I have the grey power on cable hooked to ground, and a 10 ohm, 10W power resistor between 5V and ground. It was working fine a week ago! Now, I was going to add some leds and a switch to show weather it was in standby mode or not. So, I tinned all the wires, soldered on solid core wire (so I could hook into the breadboard) and hooked everything up on the breadboard. I've double checked my connections a million times, tried different things, checked the resistance of my power resistor, but still no voltage on the rails, and I hear a clicking noise coming from the supply. The only place I am getting 5v is from the standby wire. It's acting like it will not come out of standby even though I have the grey power_on connected to ground, it should power up! Anyone have any suggestions? I have another power supply I could try hooking up but would love to get this one working since I have already tinned the wires and cleaned it up. Perhaps it could be a fuse that's blown? My next step is to open it up and start checking stuff on my meter or maybe oscilloscope.

author: DG41WV
author_rank: Regular Contributor
timestamp: March 01, 2015, 03:26:15 pm
content: are you sure the grey one is the power on. It's usually the green wire.http://www.smpspowersupply.com/connectors-pinouts.html

author: otpowell
author_rank: Regular Contributor
timestamp: March 01, 2015, 03:29:11 pm
content: Yes it's an old dell power supply .. No green wire on my PSU

author: donotdespisethesnake
author_rank: Super Contributor
timestamp: March 01, 2015, 04:13:45 pm
content: I would try adding a load on the 12V rail.

author: otpowell
author_rank: Regular Contributor
timestamp: March 01, 2015, 04:39:51 pm
content: I tried that good suggestion but it didn't work. I had this hooked up in this exact config (load on 5V) a week ago. I kinda smell a faint electrical burning type smell now. Think something wrong is going on here.. I'm gonna a open it up and see if I can see anything.

author: otpowell
author_rank: Regular Contributor
timestamp: March 01, 2015, 04:59:29 pm
content: It's almost as if something is shorted together that shouldn't be.. Last week I accidentally shorted a 5v wire to ground with no load and the power supply turned off. Right now I'm going to say F it and I just bought cheap Tekpower 15v 2amp supply for lab work. Eventually I'll need to have about 10-15 amps on a 5v rail and will be forced to figure this out or pull my other computer power supply out. For now I'll get by on wall warts until my dc supply comes in on Tuesday.
It appears Dave enjoys a sleep-in - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: March 06, 2015, 12:53:58 am
content: Almost midday and you're still not at work ;-)Only kidding, we know you work hard Dave!

author: kolbep
author_rank: Frequent Contributor
timestamp: March 06, 2015, 05:34:23 am
content: Daves Mini-me should be there to keep us entertained while Dave is AWOL

author: EEVblog
author_rank: Unknown
timestamp: March 06, 2015, 06:50:07 am
content: https://twitter.com/eevblog/status/573737015327387649

author: Unknown
author_rank: Unknown
timestamp: March 06, 2015, 06:51:24 am
content: Quote from: EEVblog on March 06, 2015, 06:50:07 amBlue Mountains?

author: Towger
author_rank: Super Contributor
timestamp: March 06, 2015, 09:25:14 am
content: Does Mini Dave do canyoning too?
Micro ruler - Page 1
Forum section: electronics / general

author: james.d.brady1
author_rank: Newbie
timestamp: February 28, 2015, 06:29:12 pm
content: Anybody know where I can purchase one of dave,s infamous rulers?since the kick starter ended I haven't found em. The second version is the one I'd like to get, but if no avail I will get the original. It's not on his amazon store?? Anways, I see adafruit has something similar but I'd rather have the Australian bloat version....
New hackerspace at geekdom San Francisco !! - Page 1
Forum section: electronics / general

author: polysome
author_rank: Newbie
timestamp: February 28, 2015, 03:14:39 am
content: Hi all,We are setting up a hackerspace at Geekdom in San Francisco and looking for equipment recommendations.We have only the basics so far,1x Rigol DS1102E1x SmartARB 6252x Fluke handheld DMMs1x FX8881x hotair rework stationSeveral large deskspowered breadboard, overhead lights, a few cheap FPGA dev kitsWe don’t have a 3d printer or laser cutter and would like your advice on recommended models and policies for use. Also how do you suggest setting up the desks, lights, fume extractors etc ?Any working equipment welcome, PM me for shipping info.BestThom

author: JuKu
author_rank: Frequent Contributor
timestamp: February 28, 2015, 08:17:48 am
content: Quote from: polysome on February 28, 2015, 03:14:39 amMake magazine recently had a shootout for 3D printers (vol. 42, Dec2014/Jan2015).My interpretation of results: Winner: Ultimaker 2 at $2499, best value for money: Printbot Simple Metal at $599.

author: george graves
author_rank: Super Contributor
timestamp: February 28, 2015, 08:29:31 am
content: That is some humble beginnings! But hats off to you for starting out.My local hacker space is nice. You can take a virtual tour here:http://www.bohonus.com/hosted/metrix/.I think the best part is the people. But people in Seattle tend to be awesome.And you might want to read this:https://learn.adafruit.com/how-to-start-a-hackerspace-the-list/the-listAs for 3d printers, you'll get a lot more traction with a open source printer. Repraps are fun to build. (PITA to tune, but fun to build.) I see a lot of people that guy a makerbot or something, and then can't figure the damn thing out. If you build it yourself, yes, you'll have much more frustrations, but at the end of the day, you'll know how the whole thing works.....unlike a black box.

author: Vgkid
author_rank: Super Contributor
timestamp: February 28, 2015, 04:40:50 pm
content: @ George Graves, that is a pretty cool looking place.
Leonard Nimoy dies at 83 - Page 1
Forum section: electronics / general

author: DIPLover
author_rank: Regular Contributor
timestamp: February 27, 2015, 06:23:07 pm
content: It is a sad day indeed.http://arstechnica.com/the-multiverse/2015/02/leonard-nimoy-mr-spock-of-star-trek-the-original-series-dies-at-at-83/Rest in Peace Mr. Spock...

author: SeanB
author_rank: Super Contributor
timestamp: February 27, 2015, 06:34:12 pm
content: LLAP

author: Phaedrus
author_rank: Frequent Contributor
timestamp: February 27, 2015, 06:44:10 pm
content: Anyone in the LA area, I highly recommend visiting Griffith Observatory this spring and watching the video in the Leonard Nimoy room about the observatory's history. It's narrated in part by Nimoy, and has a few nice moments with him. There's one scene where it shows the building of the auditorium he funded, then shows him standing in the doorway with himself playing in the background, and he gives this really wide grin. You can't help but grin with him. It's a bit cheesy in places, but worth watching. The observatory as a whole is someplace I feel more people should visit.

author: kripton2035
author_rank: Super Contributor
timestamp: February 27, 2015, 07:47:01 pm
content: Sheldon will be soooo sad

author: nanofrog
author_rank: Super Contributor
timestamp: February 28, 2015, 02:37:46 am
content: There's another thread on this:Leonard Nimoy Has Died.Perhaps they should be merged.

author: Unknown
author_rank: Unknown
timestamp: February 28, 2015, 01:38:54 pm
content: I was sad at reading this in the news paper, I loved watching Star Trek and still do enjoy the re-runs.

author: rdl
author_rank: Super Contributor
timestamp: February 28, 2015, 03:42:50 pm
content: I remember watching him as Paris in Mission Impossible when I was a kid. I also remember watching commercials advertising a new show that was coming called "Star Trek" on the first color TV in our neighborhood. It looked awesome.
"Better microwave"  - Page 1
Forum section: electronics / general

author: Bud
author_rank: Super Contributor
timestamp: February 26, 2015, 08:02:13 pm
content: This has been in the "news" for a few days, not sure why it was not mentioned on the forum. If you not sure what to do with your new shiny thermal imaging camera, put in in a microwaveWww.bettermicrowave. comAnd internet browsing using a hires display built in to the microwave door comes as a bonus.

author: Marco
author_rank: Super Contributor
timestamp: February 26, 2015, 08:19:57 pm
content: I want one with magnetic resonance thermometry.
Missing links - Page 1
Forum section: electronics / general

author: janaf
author_rank: Frequent Contributor
timestamp: February 26, 2015, 04:52:01 pm
content: I miss a couple of links / functions on this site:- Show your posts- Show your threadsThose would be nice to have in addition to:- Show unread posts since last visit.- Show new replies to your posts.I frequently have to search for posts/treads, to check things written, to continue a thread.(Yes I know there is Search....)

author: rdl
author_rank: Super Contributor
timestamp: February 26, 2015, 04:56:11 pm
content: I agree. Another good one would be "Show your attachments". This would make it easier to post a new link to a photo you have uploaded a long time ago.

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 26, 2015, 04:57:04 pm
content: They're on your profile page.Mouse over "Profile Image" and then "Show Posts..."Quote from: rdl on February 26, 2015, 04:56:11 pmThat's in the same placeEDIT: Profile Image? Should of been "Profile Info" sorry. I wish I knew what I was taking...

author: rdl
author_rank: Super Contributor
timestamp: February 26, 2015, 05:00:44 pm
content: They sure are. You do have to go to your profile page though, and then look carefully. I wonder if that could be added to the main page.

author: janaf
author_rank: Frequent Contributor
timestamp: February 26, 2015, 05:53:27 pm
content: Thanks, found the Show Posts. But show attachments? I find Show Posts and Show Stats

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 26, 2015, 05:56:27 pm
content: If you mouse over "Show Posts..." you'll get anther sub menu.So holding your mouse over "Profile Info" and you get a menu, mouse over "Show Posts..." and you get another.
Dave's next watch - Page 1
Forum section: electronics / general

author: timcki
author_rank: Contributor
timestamp: February 26, 2015, 02:11:42 am
content: http://www.dudeiwantthat.com/style/watches/flux-capacitor-watch.asp

author: Unknown
author_rank: Unknown
timestamp: February 26, 2015, 08:22:56 am
content: Fuck yeah!

author: VK5RC
author_rank: Unknown
timestamp: February 26, 2015, 11:14:56 am
content: Nyah!Nixie Watch is the only one, I believe the Woz has one.http://www.cathodecorner.com/nixiewatch/index.htmlPS I don't think it will handle much canyoning mind you!
Recent Mouser shipping to EU - is it slower now? - Page 1
Forum section: electronics / general

author: Howardlong
author_rank: Super Contributor
timestamp: February 26, 2015, 11:05:07 am
content: Folks, I've noticed over the past couple of weeks that Mouser shipping is taking four or five days to the UK, whereas only a month ago if would take two or three. For example, I used to be able to order on a Monday morning and it'd arrive Wednesday morning. Now, it's Friday.I've noticed two things, firstly if I look at the tracking sometimes it is delayed by a day at Mouser themselves. On another two occasions it was delayed in the FedEx Memphis hub for a day.Maybe I've just been a bit unlucky, but I wonder if anyone else has noticed this?
Catalogue-of-the-68-competitive-designs-for-the-great-tower-for-london-1890 - Page 1
Forum section: electronics / general

author: janaf
author_rank: Frequent Contributor
timestamp: February 25, 2015, 02:48:54 pm
content: Some mechanical engineering for a change:http://publicdomainreview.org/collections/catalogue-of-the-68-competitive-designs-for-the-great-tower-for-london-1890/
A NO COST ON-LINE FCC ELEMENT 2 TECHNICIAN COURSE - Page 1
Forum section: electronics / general

author: Mr J
author_rank: Regular Contributor
timestamp: February 25, 2015, 03:42:28 am
content: PRESS RELEASEFOR IMMEDIATE RELEASEContact:Christopher Johnson, N1IRGenesis Amateur Radio SocietyEducation Officern1ir@arrl.netN1IR.COM LAUNCHES A NEW WEBSITE;A NO COST ON-LINE FCC ELEMENT 2 TECHNICIAN COURSEPlymouth, MA N1IR is pleased to announce the launch of a no-cost on-line Technician Course. In as little as 20 minutes a day for 20 days you can pass the FCC Technician Element 2 Examination.Each day there is a two part video series. The first part is on specific sub-element theory and the second video covers all the questions and answers of the sub-element you are studying for that day. After watching the videos for that day all the student have homework assignment for the day and quiz for that days class. An on-line webinar will be available to ask questions and offer guidance for the course. A list of webinar dates will be posted on top of the n1ir tech course page. If you have any questions please email me at n1ir@arrl.net.http://www.n1ir.com/p/n1ir-tech-course.htmlPlease play introduction video first and course navigation second.Hope to see you there,Christopher Johnson, N1IRGenesis Amateur Radio SocietyEducation Officern1ir@arrl.net####The Genesis Amateur Radio Society is a non-commercial association of persons interested in Amateur Radio, organized for the promotion of interest in Amateur Radio communication and experimentation and education, for the establishment of emergency communications in the event of disasters or other emergencies, for the advancement of the radio art and the public welfare, for the representation of the radio amateur in legislative matters, and for the maintenance of collegiality and a high standard of conduct.
Anyone got any cool project ideas or uses for the RasPi 2? - Page 1
Forum section: electronics / general

author: Ampera
author_rank: Super Contributor
timestamp: February 23, 2015, 11:13:42 pm
content: Just got mine in the mail today! My idea is to make a voice controlled robot that can operate items like arms and tools.I have plans to make my original pi model B into a network controlled thermostat for the house.Would love to hear everyone else's ideas!

author: suicidaleggroll
author_rank: Super Contributor
timestamp: February 23, 2015, 11:23:05 pm
content: retropie?http://blog.petrockblock.com/retropie/

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 23, 2015, 11:26:47 pm
content: All in one RepRap/Desktop CNC/mini pick and place controller. Should be more than powerful enough to run some CAD programmes

author: MrB
author_rank: Newbie
timestamp: February 24, 2015, 10:59:53 am
content: You could run RaspBMC on it, which functions as a pretty awesome media center.http://kodi.wiki/view/Raspberry_PiYou could extend your thermostat project to control more devices around your house over WiFi.As suicidaleggroll suggested, building a console around the retropie images is nice if you're into classic games.You can find many others suggestions here:http://www.instructables.com/id/Raspberry-Pi-Projects/

author: dannyf
author_rank: Super Contributor
timestamp: February 24, 2015, 11:23:49 am
content: QuoteI got two:1) smash it with a 10pd hammer - you would be the first in the world to do that;2) smash it under a 1000ton press - you would be the first in the world to do that too.

author: Muttley Snickers
author_rank: Unknown
timestamp: February 24, 2015, 01:45:11 pm
content: How about a Xenon Flash Detector.If it worked, it wouldn't work.Muttley

author: tszaboo
author_rank: Super Contributor
timestamp: February 24, 2015, 02:46:31 pm
content: Ethernet connected useless box. I think most RPi ends up like that.

author: coppice
author_rank: Super Contributor
timestamp: February 24, 2015, 02:49:27 pm
content: Quote from: dannyf on February 24, 2015, 11:23:49 amHave you never been towww.youtube.com?You need to be very quick when something new appears if you want to be the first to wreck one.

author: tom66
author_rank: Super Contributor
timestamp: February 24, 2015, 02:51:28 pm
content: There's a guy on YT who appears to exclusively make his living from destroying the latest smartphone in innovative ways, such as boiling, smashing, immolation, hacksaw, BMW, ...
Idea for EEVblog Episode: Radar Site or Radio Telescope Tour? - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: February 23, 2015, 09:27:55 am
content: Dave, since you're "in the industry" and probably have a lot of contacts, do you reckon you'd be able to get us a tour of something like a Bureau of Meteorology radar site or maybe take a trip up to Parkes and get a behind-the-scenes tour of the Parkes Radio Telescope?I'm sure I speak on behalf of many of your viewers when I say we loved your tour of the old Channel Seven analog television transmission facility at Artarmon (for those who haven't seen it, it's linked down below). It's certainly one of my favourite episodes to-date.P.S.: Also check your P.M's for a message from me. Might be worth exploring.

author: tom66
author_rank: Super Contributor
timestamp: February 23, 2015, 11:38:36 am
content: I think Thunderf00t on YouTube did a tour of the VLA in New Mexico but I'd certainly be interested to see Dave's take on one.

author: EEVblog
author_rank: Unknown
timestamp: February 24, 2015, 04:34:54 am
content: I'm sure I could get into these places, you usually just have to ask.It requires me getting off my lazy arse.

author: Richard Crowley
author_rank: Super Contributor
timestamp: February 24, 2015, 04:48:42 am
content: Is there anything left of the NASA tracking station out there in Carnarvon, Western Australia?Or the Parkes Observatory in NSW?

author: EEVblog
author_rank: Unknown
timestamp: February 24, 2015, 05:47:29 am
content: Quote from: Richard Crowley on February 24, 2015, 04:48:42 amI've been to Parkes, and did a short tourist video on it. Yes, stuff there to be had.I have an open invite to the deep space tracking network at TidbinbillaWA has (what we got of) the new SKA.
My RPI 2 is comming today! - Page 1
Forum section: electronics / general

author: Ampera
author_rank: Super Contributor
timestamp: February 23, 2015, 06:08:46 pm
content: So excited! I have no clue what to do with it first!

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 23, 2015, 06:19:14 pm
content: Quote from: TwoOfFive on February 23, 2015, 06:08:46 pmI'd see how well some standard ARM distros run.
Ideas to hack an IR cable for the honeywell gasalertmicroclipxt? - Page 1
Forum section: electronics / general

author: XOIIO
author_rank: Super Contributor
timestamp: February 22, 2015, 07:16:12 pm
content: Hey all, got a gasalertmicroclipXT through kijiji for a meer $20, h2s and LEL sensors are active, sadly carbon monoxide and oxygen sensors are not active.I need an infrared usb interface cable to program and read data from it, however I haven't found anything online in terms of DIY solutions, the cable will be around $80 plus shipping locally (one province over) so about the same price as anywhere else, though online would probably have more shipping cost.There is no JTAG connector on it however and the IR LED's are a small SMD assembly, so I think it might be hard to rig up anything DIY. I'm thinking I will just have to pony up for the cable sadly, but maybe someone here has done work with these and has an idea or heck maybe works for a company that uses these and has an old one they could send me for cheaper.I can't find anywhere online less than $70usd. Guess these specialized things don't go on sale really lol.

author: SArepairman
author_rank: Frequent Contributor
timestamp: February 22, 2015, 10:22:10 pm
content: I'll bet that there is an app note for a chip that provides serial IR or something that will talk about the board layout etc.do they really do USB over IR?Or is it USB -> Serial -> IR transceiver

author: XOIIO
author_rank: Super Contributor
timestamp: February 23, 2015, 10:34:24 am
content: Yeah I've been looking for info on that but haven't found anything.
Forum registration is broken on the mobile version of the site - Page 1
Forum section: electronics / general

author: iamdarkyoshi
author_rank: Frequent Contributor
timestamp: February 22, 2015, 05:25:33 pm
content: I was signing up here using my android tablet, and I had originally tried to do so using the mobile version of the site. After about 10 minutes of failing, I tried the desktop version (ignoring the tapatalk nag messages) and the desktop version worked. The mobile version was missing the "are you a human" and the country settings. Just thought I should point this out to get fixed.
Antiparallel opto? - Page 1
Forum section: electronics / general

author: vlad777
author_rank: Frequent Contributor
timestamp: February 20, 2015, 02:38:42 pm
content: Can someone suggest an optocoupler with LEDs in antiparallel ?It should be able to handle inrush current so I can limit current with a capacitor.I'll be running it from mains.Many thanks.

author: ConKbot
author_rank: Super Contributor
timestamp: February 20, 2015, 09:12:12 pm
content: This sounds like a case that needs more information of the end goal instead of an answer to an intermediate task...A bridge rectifier after your dropper cap, and a series resistor to help limit the inrush current should function the same as 2 LEDs in antiparallel inside the opto.

author: dannyf
author_rank: Super Contributor
timestamp: February 20, 2015, 09:14:21 pm
content: Take two optos, anti-parallel their led sides and parallel their phototransistor sides.

author: vlad777
author_rank: Frequent Contributor
timestamp: February 21, 2015, 09:41:25 am
content: @ConKbotJust want to detect presence of mains voltage. (when switch is flipped by some mechanics)Don't want to use resistor because of wasting energy.@dannyfGood thinking , thanks!Can you provide a part number for opto that can handle large inrush currents.

author: Zero999
author_rank: Super Contributor
timestamp: February 21, 2015, 10:07:12 am
content: Quote from: vlad777 on February 21, 2015, 09:41:25 amMost are fine for 100mA or so of inrush.Use a series resistor in addition to the capacitor. If the capacitor is selected so the continuous current is 10mA and the resistor so the surge is 100mA then the resistor will hardly get warm.

author: miceuz
author_rank: Frequent Contributor
timestamp: February 22, 2015, 09:28:53 am
content: LTV-814 has LEDs in anti-parallel.
Whiteboard clock - Page 1
Forum section: electronics / general

author: Howardlong
author_rank: Super Contributor
timestamp: February 21, 2015, 09:03:11 am
content: One for the time aficionadosVideo herehttp://youtu.be/4QgeQAiSmM8Project page herehttps://docs.google.com/document/u/2/d/197pwFltWL2HPnOAmC840sPHhjxqxiOnNVOuI_dnLLb4/pub

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 21, 2015, 09:40:40 am
content: Cute, but it should only wipe the changing digits of course.

author: XOIIO
author_rank: Super Contributor
timestamp: February 21, 2015, 10:08:43 am
content: Holy shit that is fucking awesome!

author: GreyWoolfe
author_rank: Unknown
timestamp: February 21, 2015, 05:16:32 pm
content: Quote from: XOIIO on February 21, 2015, 10:08:43 amI want one, especially because it tells military time. SWMBO was a military brat and her first husband was military and she can't tell military time. I have lots of fun with that. Military time on my bedside alarm clock and a 24 hour analog clock set to zulu time here in my office/ham shack. It's fun to watch her spin trying to tell time

author: SeanB
author_rank: Super Contributor
timestamp: February 21, 2015, 08:31:08 pm
content: Mess with her even more, slip the military clock 12 hours.........

author: GreyWoolfe
author_rank: Unknown
timestamp: February 21, 2015, 09:09:57 pm
content: Actually, the clock in her car can be set to military. That would be funny, but I would probably have to duck whatever she throws at me for that.

author: Stonent
author_rank: Super Contributor
timestamp: February 22, 2015, 06:29:02 am
content: I've seem a similar one to that before here:????,???? {HD}
Help me calculate gtx 570 soft strap xD - Page 1
Forum section: electronics / general

author: insect152
author_rank: Newbie
timestamp: February 23, 2015, 05:41:55 pm
content: Recently i followed this guidehttp://www.davidgis.fr/blog/index.php?Xen/p2and i have been successfully go Quadforce 6000 with my 480.Guys i need help to calculate the straps for 570 -> 580 ( see if its bring any benefits), 570 -> 590 ( for fun), and 570 -> Quadro 6000 xDHere is its stats and its device ID :
Energy harvesting, the new frontier? - Page 1
Forum section: electronics / general

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 27, 2015, 06:10:15 pm
content: http://youtu.be/RzjeAaLbM5kI don't want to know how much DIY it takes to charge an iPhone

author: james.d.brady1
author_rank: Newbie
timestamp: February 28, 2015, 06:46:31 pm
content: Yea, I could probably take my house off the grid with this..ha ha na, funny though..

author: BlueBill
author_rank: Regular Contributor
timestamp: February 28, 2015, 07:09:08 pm
content: Gotta dig up my Ivor Biggun album.
External Power Supply for Microcurrent - Page 1
Forum section: electronics / general

author: shaneh
author_rank: Newbie
timestamp: February 19, 2015, 04:14:16 am
content: Hi All,I'm a first time poster & user of the forum. Apologies if this has come up before, I did search but didn't find anything on it.Is there a simple way to extend the battery life of the micro current gold? I need to run some logging tests with a microcurrent that will go for a few weeks and it appears the battery life won't get it there. I'm thinking of using an external power supply or wiring in a larger battery pack.Any suggestions of how to do it and what sort of life I could expect would be greatly appreciated.Please type slowly, I'm a mechanical engineer, not electrical.Kind Regards,Shane

author: PeterFW
author_rank: Frequent Contributor
timestamp: February 19, 2015, 10:15:21 am
content: The old µCurrent website says:QuoteI would guess, if you can use 3xAAA you can use 3xD if size is of no concern.

author: dannyf
author_rank: Super Contributor
timestamp: February 19, 2015, 10:19:09 am
content: QuoteBuild your own. Something like lmc6062 or 6042 idles like 20ua and has Ibias of 20fa or less would allow it to be powered from a small battery for ages - use one of the amp as an ammeter and the other as a rail spliter. No regulator shall apply,With a high value resistor, it can easily get to 1pa measurement.

author: shaneh
author_rank: Newbie
timestamp: February 20, 2015, 02:52:26 am
content: Thanks PeterFW, I'll do that.(dannyf, i think what you are proposing is a bit beyond my current capabilities)Cheers,Shane

author: MLXXXp
author_rank: Frequent Contributor
timestamp: February 20, 2015, 09:44:34 pm
content: If you decide to run the µCurrent at 4.5V, you may wish to consider increasing the value of R4, to reduce the "BATT OK" LED current and reduce the risk of damaging the voltage supervisor IC U3. See the discussion of this starting at this post and a few following:https://www.eevblog.com/forum/oshw/current-gold-hw-design-question/msg404617/#msg404617I've put a 1K in mine and it's still plenty bright for me, even at the lowest usable voltage. This will also reduce the overall current needed to power the µCurrent, thus increasing run time on batteries significantly.https://www.eevblog.com/forum/crowd-funded-projects/current-gold-on-kickstarter/msg449140/#msg449140

author: MLXXXp
author_rank: Frequent Contributor
timestamp: February 20, 2015, 09:58:36 pm
content: If you want to stick with the standard 3V supply for the µCurrent, you could consider using a CR123 3V lithium cell, or 2 or more in parallel, in suitable holders. A single CR123 would give you about 6 times the run time of a CR2032.
Gallium Wetting - Page 1
Forum section: electronics / general

author: dexters_lab
author_rank: Unknown
timestamp: February 19, 2015, 02:39:08 pm
content: long shot this i know... butI'm trying to find a material to store some gallium in, gallium seems to be very 'wet' as in it leaves particles behind on lots of things when it's liquid including the plastic container i have some stored in now and it seems to just want to spread itself about!was wondering if there is some plastic that it doesn't wet to?

author: ElektroQuark
author_rank: Unknown
timestamp: February 19, 2015, 02:41:15 pm
content: Did you tried PTFE?

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 19, 2015, 02:46:45 pm
content: Have you tried coating the container by rubbing some of the gallium into it? I know that works with glass and quartz, maybe it will with some plastic?

author: dexters_lab
author_rank: Unknown
timestamp: February 19, 2015, 03:06:13 pm
content: not tried anything yet, was waiting for suggestions, i didn't want to make a mess with it trying!!

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 19, 2015, 03:13:30 pm
content: Quote from: dexters_lab on February 19, 2015, 03:06:13 pmIt's almost impossible not to make a mess while playing with gallium. If you get it on your bare hands it goes everywhere you touch, the smallest amount spreads far too and is a right bugger to clean up lol.I'm sure you already know this but be very careful with it around other metals...EDIT:Oh and don't trust the claims that it's non toxic. It is at least mildly toxic* and unlike mercury also wets skin so it's easier to be poisoned by it through just handling instead of by ingesting or inhaling it.

author: SeanB
author_rank: Super Contributor
timestamp: February 19, 2015, 04:02:05 pm
content: I would guess you will not get wetting with a PET plastic bottle, and you will definitely not get wetting with either PTFE or a wax lined bottle ( it will hold HF acid no problem, though the glass lid will dissolve). Wax though will need to be kept in a fridge, and this will also solidify the Gallium as well so it is less likely to wet.

author: dexters_lab
author_rank: Unknown
timestamp: February 19, 2015, 06:00:42 pm
content: thanks for the suggestions guysyea i am aware of gallium's effects on other (most!) metals, i will be experimenting!

author: jwm_
author_rank: Frequent Contributor
timestamp: February 20, 2015, 12:54:10 am
content: gallium wets everything it seems. there are some ideas on this thread on how to do it, but I have not tried any. I do have a high vacuum chamber so may try sputtering it onto glass, seems like something Ben Krasnow would have already experimented with.http://scitoys.com/board/messages/1/202.html?1263264803
Silicone grease/oil on contacts or not? - Page 1
Forum section: electronics / general

author: BigClive
author_rank: Contributor
timestamp: February 19, 2015, 02:00:17 am
content: I've always avoided the use of silicone oil or grease in the vicinity of electrical contacts on the basis that there is divided opinion on whether it can cause issues with sliding contacts not making a good connection due to its high insulation properties. What are the current views on this? I suppose most electronic greases or oils have a high insulation property, but are still used on switches successfully due to the contacts pressing right through to make physical metal-on-metal contact.So what are the known facts? Does it actually cause problems or has it just been easy to blame the silicone for other unrelated problems?

author: Whales
author_rank: Super Contributor
timestamp: February 19, 2015, 08:21:04 am
content: I have a feeling it's situation dependant. ie pressure and contact area.I've found spraying a light oil onto the contacts of a brushed motor slows it down until you wipe it off, but in situations like potentiometer sliders lube is expected.
My Setup! - Page 1
Forum section: electronics / general

author: eengineer
author_rank: Contributor
timestamp: November 01, 2012, 02:13:14 am
content: so excited about all the new equipment I've gotten! 2 weller wsd 81 and 1 weller wd 2m variable soldering iron power supplies, tektronix CPS250 variable DC power supply, tektronix CFG253 function generator and a tektronix 2213a oscilloscope. the only thing i paid for was the osilloscope for 80 bucks!

author: EEVblog
author_rank: Unknown
timestamp: November 01, 2012, 09:57:29 am
content: Bargain!Where did you score all that from?Dave.

author: eengineer
author_rank: Contributor
timestamp: November 01, 2012, 02:28:01 pm
content: my university upgraded function gen to bk prevision 4040a and psu to bk prevision 1672, years before I even started attending, and I found the old function gens and power supplies just collecting dust in a closet. Soldering power supplies my Dad's company phased out as well so he brought them home for me! Just getting lucky with this second-hand equipment!

author: MikeK
author_rank: Super Contributor
timestamp: November 01, 2012, 11:38:12 pm
content: Congrats!

author: sacherjj
author_rank: Frequent Contributor
timestamp: November 02, 2012, 03:05:32 am
content: If its free, its for me.Looks like you have the start of a nice little lab.

author: IanB
author_rank: Super Contributor
timestamp: November 02, 2012, 03:53:13 am
content: Quote from: eengineer on November 01, 2012, 02:28:01 pmThat must be one of those old, long established universities like Oxford, then?

author: eengineer
author_rank: Contributor
timestamp: November 02, 2012, 04:29:20 am
content: Quote from: IanB on November 02, 2012, 03:53:13 amlol i put a comma in just to clarify

author: robrenz
author_rank: Super Contributor
timestamp: November 02, 2012, 12:33:31 pm
content: Quote from: IanB on November 02, 2012, 03:53:13 amMaybe he found a Tardis in the closet!

author: Rgreen50
author_rank: Newbie
timestamp: February 18, 2015, 10:08:12 pm
content: Hello..did you happen to get the service manuals for the Tektronix CFG253 ?? I really need one bad..Rick
Happy birthday Allessandro! - Page 1
Forum section: electronics / general

author: aargee
author_rank: Frequent Contributor
timestamp: February 17, 2015, 10:04:45 pm
content: Google has celebrated Alessandro Volta's 270th Birthday with a doodle. (18/2/15 - here in Aus)It is currently on their search engine and showing some potential, I think.Where would we be without the Volt? It probably would have been named the Blogg after Joe Bloggs, who would have surely discovered it sometime later.
Spartan Sprint Obstacle Course video quality - Page 1
Forum section: electronics / general

author: bktemp
author_rank: Super Contributor
timestamp: February 16, 2015, 07:46:46 am
content: First of all: I do not want to rant about the video quality, I just want to talk about it, because nobody seems to have mentioned it.The video quality is bad, but that is what you get from a cheap GoPro clone.But there is one big problem Dave can easily avoid to get a much better quality: Setting the camera to 60fps.If you watch the video frame by frame you can see every second frame is an avarage of the previous and next frames. It looks like the camera can only do 30fps and interpolates the video data to 60fps in software.This makes all scenes with a lot of motion totally blurred and then the video compression makes it even worse.

author: steve30
author_rank: Frequent Contributor
timestamp: February 16, 2015, 10:53:08 am
content: I've seen better than this video, but I usually find that anything with lots of motion is too blurry. Even some of the good videos can be pretty crap.Although with this one I was focused more on the sexy Australian guys than I was on the video quality.Dave should definitely have taken some tools and done a teardown of the RFID machine.

author: dexters_lab
author_rank: Unknown
timestamp: February 16, 2015, 11:33:41 am
content: the blended frames look more like it was encoded interlaced and then blended to progressive when it was edited / final renderedalso you would want to check the source really is 60fps, because i'm sure Sony Movie Studio does that inter-frame blending when the frame rate of the source is different to the project
Wooden electronics  - Page 1
Forum section: electronics / general

author: IanB
author_rank: Super Contributor
timestamp: February 13, 2015, 03:22:16 pm
content: Well, heh, who needs plastic cases?http://youtu.be/N77WZPadGdoLove the way this leads to a bespoke design perfectly tailored to the application.

author: Mechanical Menace
author_rank: Super Contributor
timestamp: February 13, 2015, 03:45:35 pm
content: I'm going to have to see if I can find pics of the PC I made for an ex when mini ITX boards first became popular. She had an "olde fashioned" office/library at home and didn't like how the plastic and metal cases looked in there. The PC looked like a walnut humidor and I also recased the monitor to look like a large picture frame.As cool as that vid was I'd just use an off the shelf or printed plastic enclosure for that sort of use.
Come To Electrical Engineering... - Page 1
Forum section: electronics / general

author: Phaedrus
author_rank: Frequent Contributor
timestamp: February 11, 2015, 07:50:51 pm
content: Just couldn't resist that one, could you? Jokes like this have led to lots of wasted potential.

author: TerraHertz
author_rank: Super Contributor
timestamp: February 12, 2015, 05:15:20 am
content: That's a very crude joke. Here's another:

author: radiomog
author_rank: Regular Contributor
timestamp: February 12, 2015, 07:30:48 am
content: ok, I'm at a loss for that one (??)

author: TerraHertz
author_rank: Super Contributor
timestamp: February 13, 2015, 07:18:19 am
content: Quote from: radiomog on February 12, 2015, 07:30:48 amAmateur heavy duty strippers. When you desire quantity not sophistication.

author: Phaedrus
author_rank: Frequent Contributor
timestamp: February 13, 2015, 03:59:44 pm
content: That one just hertz
The Poor, Bad, Terrible, and Dangerous Connection Thread - Page 1
Forum section: electronics / general

author: xrunner
author_rank: Super Contributor
timestamp: February 13, 2015, 02:44:27 pm
content: First I want to thank fubar.gr for the inspiration. This thread is here to show people the worst and most dangerous pre-made connections you come across. Hopefully it will alert anyone who reads it of the hidden or just under the surface connections made to save money. or by sheer incompetence. If anyone has their own pics please contribute!First we'll start with fubar.gr's example of a dangerous jumper cable -Quote from: fubar.gr on February 12, 2015, 12:58:03 pmHere's my contribution. First we have a clip lead and banana plug from China. I bought some banana test leads to use with power supplies. However they were not conducting. The banana plug connection was not visible unless you cut away all the plastic. That solder joint just snapped off with little force.The clip lead connection wasn't as hard to find, but as you can see, the copper looks like something that came out of the scrap yard, all corroded. Bad stuff.Next an example of a tiny antenna that came with a USB dongle. As you can see, they didn't care that the ground could short to the center conductor -
Website idea for sharing open hardware projects. - Page 1
Forum section: electronics / general

author: bfrigon
author_rank: Contributor
timestamp: February 12, 2015, 08:48:15 pm
content: Hi,I had an idea for a website that would allow people to share open hardware projects. Something like pastebin, with the ability to view pcb layouts and schematics inside the browser. You could upload an eagle or kicad file directly and a script would then convert them to png files.The user would have the option to switch each layers on or off and zoom in on certain parts of the pcb.It would be useful for people on this forum who have questions about their projects. It would provide a quick way to share the layouts and schematic so others can view them and give feedback.You can share your files on github, but people need to download the files and open it in whatever what used to create it and if they don't have that particular program, they can't. You can always convert your files to PDF. That works well with schematics, but not so much for pcb layouts.Anyway, it's still a crude idea... i just thought i would share it with you. What do you think?

author: zapta
author_rank: Super Contributor
timestamp: February 12, 2015, 08:54:26 pm
content: Github had viewers for special file formats such as stl but not for eagle files. This will be very useful. Currently I am also dumping as PDF.
Science today - Page 1
Forum section: electronics / general

author: dannyf
author_rank: Super Contributor
timestamp: February 12, 2015, 05:29:08 pm
content: Two interesting articles in Nature:1) finch beak: Darwin observed the diversity of beak shapes in finches. Now scientists have isolated that diversity to one gene, ALX1, which humans also have. So it is hypotherized that ALX1 in human also controls facial shapes too. Now, we finally have a connection with birds.2) carbon in the ocean: by studying shell fish, scientists have established that the southern atlantic ocean acts like a giant carbon reservoir and release of carbon from the ocean may have contributed to the end of the last ice age. They estimated both the speed of carbon exchanges between earth's atmosphere and its ocean, as well as the capacity of the reservoir: the ocean contains 60x of the carbon in the atmosphere.This is where things get a little fuzzy: the scientists are said to have attributed the carbon release from the ocean as the reason the last ice age ended. They didn't quite provide anything to support the causality (other than that those two events are tied in time). Also, they didn't provide any reason as to why the ocean suddenly decided to either sink or release carbon.Nonetheless, interesting studies.

author: Simon
author_rank: Unknown
timestamp: February 12, 2015, 05:59:56 pm
content: Any further topics of this "nature" will get you banned! this is an electronics forum! and no your not the only one to have been warned and no doubt won't be the last. Just quit it and go find the right type of forum for these discussions!