Electrical Engineering V2 - Developers

Tried the CNC machine at school. [t]http://i.imgur.com/o600LuB.jpg[/t] Pretty cool to just drill out a PCB. Ignore the part where the board looks like it almost caught on fire, it most certainly did not almost not catch on fire.

If the geometry of the traces isn't critical, you might want to try voronoi-milling to reduce the travel of the CNC-head: [img]https://groups.csail.mit.edu/drl/wiki/images/2/2c/ATM0PCB0-three-ways-med.jpg[/img]

So recently I found an unused induction cooker in the storage room: [img_thumb]http://i.imgur.com/4oOEWO9.jpg[/img_thumb] Then I fired it up and it starts shaking, so I look at the bottom and see this: [img_thumb]http://i.imgur.com/xgu3zm0.jpg[/img_thumb] Then I basically voided the warranty by opening it up, no one cares about this cooker anyway [img_thumb]http://i.imgur.com/DXGwOvJ.jpg[/img_thumb] Well that is some bad quality disaster there. Is it normal for the fan to explode at startup? At least its better than my blowtorch that leaks gas at the knob that is near my hand... So I cut the wire that leads to the defective fan, and it stops shaking. I'm replacing it later But I hate this induction cooker. It keeps complaining for everything that is not normal. Like non magnetic pan, or surface overheat error. So my next project is making my own induction heater. With real power control instead of on-off control like this cooker does. At least this cooker can still cook This looks promising: [img]http://4hv.org/e107_files/public/1322325485_1034_FT0_1313589228_89_ft1630_royer_ih.png[/img]

Sorry, remote linking is not permitted.

What is remote linking?

[QUOTE=Abaddon-ext4;47112766]What is remote linking?[/QUOTE] [img]http://puu.sh/fJvUH/1ece9c6bee.png[/img] Your image is broken, pretty much. Anyway, have a mirror: [img]http://puu.sh/fJw0j/2db4a424f1.png[/img]

[media]http://www.youtube.com/watch?v=U3w_EWgGQuk[/media] Anyone got a million bux to spare ?

One unit is one fucking million? Still, it's fucking sweet.

[QUOTE=Fourier;47119174]One unit is one fucking million? Still, it's fucking sweet.[/QUOTE] The LabMaster 10-100Zi is immediately available with a US list price starting at $900,000 Holy fuck

[url="https://www.kickstarter.com/projects/voltera/voltera-your-circuit-board-prototyping-machine/"]This Kickstarter[/url] hit their $70k funding goal in 35 minutes. I want one of those.

[QUOTE=nikomo;47119489][url="https://www.kickstarter.com/projects/voltera/voltera-your-circuit-board-prototyping-machine/"]This Kickstarter[/url] hit their $70k funding goal in 35 minutes. I want one of those.[/QUOTE] That's pretty slick, I was worried how it would stand up to soldering but that seems to hold up pretty well for instant prototypes. I need that.

I can't afford one but holy fuck, that looks amazing. I think this thing would be a fucking awesome addition to my university.

Do you guys know any website that sells electrical accessories like buttons, potentiometers, logic gates, etc?

Ebay comes to mind. Even gives you a month to plan your design before any parts arrive. :v: Edited: [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_8181.jpg[/IMG]

[QUOTE=Cesar Augusto;47127780]Do you guys know any website that sells electrical accessories like buttons, potentiometers, gates, etc?[/QUOTE] Farnell for buttons and potentiometers, I would suggest B&Q or Wicks for gates. ;) [editline]12th February 2015[/editline] [QUOTE=pentium;47127806]Ebay comes to mind. Even gives you a month to plan your design before any parts arrive. :v: Edited: [IMG]http://i11.photobucket.com/albums/a166/ballsandy/IMG_8181.jpg[/IMG][/QUOTE] Where did you get that. I want one. Now. Right Now.

Check your nearest junk old camcorder with a CRT viewfinder. The whole circuit can live off as little as a 5v and a composite signal. [img]http://i11.photobucket.com/albums/a166/ballsandy/100_2558.jpg[/img] I'm trying to find someone who basically makes little models for dollhouses so I can make one into a tiny television set.

[QUOTE=pentium;47127878]Check your nearest junk old camcorder with a CRT viewfinder. The whole circuit can live off as little as a 5v and a composite signal. [img]http://i11.photobucket.com/albums/a166/ballsandy/100_2558.jpg[/img] I'm trying to find someone who basically makes little models for dollhouses so I can make one into a tiny television set.[/QUOTE] A tiny, but stupidly long television set.

Just embed 2/3rds of it in the wall behind. Nobody would have to know. [editline]12th February 2015[/editline] If you have the dimensions for it I can spin something off my 3D printer for you.

I remember seeing someone on Youtube making infrared night-vision goggles with one of those, a CCD camera, infrared filter and some high-output infrared LEDs. Pretty neat stuff.

[QUOTE=Cakebatyr;47128015]Just embed 2/3rds of it in the wall behind. Nobody would have to know. [editline]12th February 2015[/editline] If you have the dimensions for it I can spin something off my 3D printer for you.[/QUOTE] How about I let you borrow it?

I found out my school has some sort of 3D printer but it's stuck in political limbo, they're not sure what line of education should own it.

Chemistry department. Because you could get some amazing polymers to play with.

Haven't got a chemistry department. This is a trade school with a limited set of trades, not a university. There's some vehicle-related stuff (car repair and maintenance, and truck driver education), hairdressers, chefs, nurses, and then quite a bit of IT and electronics. Oh and there's some construction stuff on the other side of the street I'm not familiar, there's one side where they learn to build houses and other buildings, and there's also some limited architectural education I believe. If I come up with a project where a 3D printed case would be great, and I designed one, I'm reasonably sure I could get a sales pitch through to get one made. Even if I can't get a case made that way, I can just order one online. There's some websites that link up people and companies with 3D printers, with people that need stuff made.

Why not just make it "public access" where each class that might need to make something with it will have to schedule/lease time for its use?

I was thinking of a jobs system, where you just submitted files somewhere and someone would look over it and print it. You could add in teacher approval to that system easily, to stop them from being scared of someone hitting up Bad Dragon and printing copies. Also, I just had some samples come in. I got myself 3 of these: [url]http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en022889[/url] No idea why, but maybe I'll use one some day.

How are SMD LEDs orientated correctly on an automated production line with a pick and place machine? I got some 1206 LEDs, you can achieve correct orientation if you grab one LED and test it, since there's a little strip of holes on the tape that you can use to orientate the strip, but you have to somehow know which side is anode, and which is cathode, when you're placing the tape into the machine. And the pick and place machine has to know the correct orientation too.

[QUOTE=nikomo;47133605]How are SMD LEDs orientated correctly on an automated production line with a pick and place machine? I got some 1206 LEDs, you can achieve correct orientation if you grab one LED and test it, since there's a little strip of holes on the tape that you can use to orientate the strip, but you have to somehow know which side is anode, and which is cathode, when you're placing the tape into the machine. And the pick and place machine has to know the correct orientation too.[/QUOTE] Usually the datasheet will tell you which way the LED is packed in the tape, and the PnP operator has to input it into the control software.

Hello everyone. Anyone by any chance can translate or guess what Molex is trying to say here in the legend for this drawing: [t]https://www.dropbox.com/s/okro7lrcrz3g6r1/%D0%A1%D0%BA%D1%80%D0%B8%D0%BD%D1%88%D0%BE%D1%82%202015-02-13%2022.28.43.png?dl=1[/t] This is from [URL="https://www.dropbox.com/s/dewj6ghjjzs3zce/5031821852_sd.pdf?dl=0"]a drawing of a microSD connector[/URL]. I can't google translate that, it doesn't copy-paste

Hello, my laptop is metal and when I rub it, I feel vibrations (only when rubbing). This happens only when plugged into electricity. What is this.. somekind of faulty/floating ground? [editline]14th February 2015[/editline] And yes, the vibrations make the sound and I think it close to 60Hz, what the fuck? This is AC leakage somewhere :v:

[QUOTE=Fourier;47139467]Hello, my laptop is metal and when I rub it, I feel vibrations (only when rubbing). This happens only when plugged into electricity. What is this.. somekind of faulty/floating ground? [editline]14th February 2015[/editline] And yes, the vibrations make the sound and I think it close to 60Hz, what the fuck? This is AC leakage somewhere :v:[/QUOTE] Having some leakage is perfectly normal, in general it should be under 250uA to earth or neutral, which you can feel but is otherwise safe.