Electrical Engineering V2

[Fourier]

And now it's gone? How? Why? I didn't changed/moved anything.

[Strider_07]

I found an interesting problem with the Arduino IDE under Ubuntu, my serial monitor is outputting fun things like "Ý–"

here's the code I was using to test the serial monitor output after the Adafruit CC3000 did the same thing:

/*
 * Hello World!
 *
 * This is the Hello World! for Arduino. 
 * It shows how to send data to the computer
 */


void setup()                    // run once, when the sketch starts
{
  Serial.begin(9600);           // set up Serial library at 9600 bps
  
  Serial.println("Hello world!");  // prints hello with ending line break 
}

void loop()                       // run over and over again
{
                                  // do nothing!
}

I tried purging and reinstalling usb-modeswitch but that didn't help, and I'm running the IDE as root. Any ideas?

[DrLuke]

[QUOTE=Fourier;47139601]And now it's gone? How? Why? I didn't changed/moved anything.[/QUOTE]

Maybe the ground connection of the power cord is dodgy.

[Strider_07]

Update: I moved back into windows and the serial monitor works but my Adafruit CC3000 is still outputting nonsense to the serial monitor. :suicide:

[LoneWolf_Recon]

[QUOTE=Strider_07;47139713]I found an interesting problem with the Arduino IDE under Ubuntu, my serial monitor is outputting fun things like "Ý–"

here's the code I was using to test the serial monitor output after the Adafruit CC3000 did the same thing:

/*
 * Hello World!
 *
 * This is the Hello World! for Arduino. 
 * It shows how to send data to the computer
 */


void setup()                    // run once, when the sketch starts
{
  Serial.begin(9600);           // set up Serial library at 9600 bps
  
  Serial.println("Hello world!");  // prints hello with ending line break 
}

void loop()                       // run over and over again
{
                                  // do nothing!
}

I tried purging and reinstalling usb-modeswitch but that didn't help, and I'm running the IDE as root. Any ideas?[/QUOTE]

I haven't ever had that much luck with arduino's serial monitor on linux. What I tend to use is screen, i.e.:

screen /dev/ttyACM0 2400

(Where ttyACM0 is your arduino device, and the 2400 is whatever baudrate you run at).

[Strider_07]

interesting, I'll have to try that. Hopefully this WiFi breakout board isn't bad

[Cakebatyr]

[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]

What else was plugged in at the time?

[Zero-Point]

Have any of you guys had any luck with those universal LCD display driver boards? You know, the kind that lets you connect stuff like old laptop screens and use them as displays for other things?

[Subzero MP3Z]

[QUOTE=Fourier;47139601]And now it's gone? How? Why? I didn't changed/moved anything.[/QUOTE]

Did it stop charging?

[Fourier]

[QUOTE=Cakebatyr;47140143]What else was plugged in at the time?[/QUOTE]

LCD through VGA, Power supply, Ethernet for internet, and USB for wireless mouse.

[editline]15th February 2015[/editline]

[QUOTE=DrDevil;47139851]Maybe the ground connection of the power cord is dodgy.[/QUOTE]

Probably :v:.

[editline]15th February 2015[/editline]

[QUOTE=Subzero MP3Z;47143823]Did it stop charging?[/QUOTE]

No, it always works just fine. Sometimes I feel it even when I unplug power supply, but still have LCD connected through VGA. (and vice versa, when only power supply is connected).

So it has to be dodgy power cord.

[woidoi]

I've got these 2 IC's out an old device

[t]https://dl.dropboxusercontent.com/u/43645231/photos/electro/2015-02-15%2016.06.13.jpg[/t]

the small one was easy enough to figure out what it was, seems to be an old EEPROM.

I can't figure out what the big one is because some fuck put a sticker over all the information. What would you guys suggest for removing it? I considred aceton but that might also like, dissolve the IC (and text) itself.

[editline]15th February 2015[/editline]

the first few letters seem to be MOZY/M0ZY but that yields nothing of use on google.

[nikomo]

[QUOTE=Zero-Point;47142655]Have any of you guys had any luck with those universal LCD display driver boards? You know, the kind that lets you connect stuff like old laptop screens and use them as displays for other things?[/QUOTE]

Been thinking about those, I'm not sure how they're supposed to be universal, the pinouts probably vary quite a lot between different displays.
Then again, it could be standardized to make things cheaper.
I'm interested, though.

Edit:
Actually, now that I think about it, LVDS pinout is universal. Just have to make sure the display is actually using the pinout.

[LoneWolf_Recon]

[QUOTE=scratch (nl);47145386]I've got these 2 IC's out an old device

[t]https://dl.dropboxusercontent.com/u/43645231/photos/electro/2015-02-15%2016.06.13.jpg[/t]

the small one was easy enough to figure out what it was, seems to be an old EEPROM.

I can't figure out what the big one is because some fuck put a sticker over all the information. What would you guys suggest for removing it? I considred aceton but that might also like, dissolve the IC (and text) itself.

[editline]15th February 2015[/editline]

the first few letters seem to be MOZY/M0ZY but that yields nothing of use on google.[/QUOTE]

Yeah just carefully peal it back with an Xacto knife or something. How old is the device/what was the device you pulled it out of?

[woidoi]

[QUOTE=LoneWolf_Recon;47145687]Yeah just carefully peal it back with an Xacto knife or something. How old is the device/what was the device you pulled it out of?[/QUOTE]

Wouldn't the knife possibly scrape off the text? The Sticker is all dried up too,you can see my a ttempt in the bbottom right. It came out an crt tv ~10 yr old

[Ddrl46]

Alcohol / acetone and rub. The markings are usually laser etched.

[Van-man]

[QUOTE=nikomo;47145587]Been thinking about those, I'm not sure how they're supposed to be universal, the pinouts probably vary quite a lot between different displays.
Then again, it could be standardized to make things cheaper.
I'm interested, though.

Edit:
Actually, now that I think about it, LVDS pinout is universal. Just have to make sure the display is actually using the pinout.[/QUOTE]

The thing with LVDS is that there no way for the screen to tell the driver chip what its specifications are, That has to be done manually.
When a friend of mine ordered one from china, the seller asked for the model number for the screen he was intending to use it with so they could program the board for him.

I would be supporting eDP like there was no tomorrow if it wasn't for the fact that VGA/DVI to DP adapters are hilariously expensive.

[Zero-Point]

[QUOTE=scratch (nl);47145932]Wouldn't the knife possibly scrape off the text? The Sticker is all dried up too,you can see my a ttempt in the bbottom right. It came out an crt tv ~10 yr old[/QUOTE]

If you're that paranoid about it, try Goo-Gone. (not sure if they call it that in your country though)

[woidoi]

acetone and some peeling did it's job. Turns out it's an UV [URL="http://pdf.datasheetcatalog.com/datasheet/SGSThomsonMicroelectronics/mXrvwzx.pdf"]EPROM[/URL], meaning I can't do a lot with it as it's pre-programmed most likely. It has no window of any kind to erase it's current program.

[nikomo]

[QUOTE=Van-man;47146390]I would be supporting eDP like there was no tomorrow if it wasn't for the fact that VGA/DVI to DP adapters are hilariously expensive.[/QUOTE]

Sucks hard, DisplayPort output to HDMI input can be done cheaply but the other way around requires active conversion, which is way over 100€.

[Trumple]

Anyone know what this type of header is called?

[t]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_header.jpg[/t]
[url]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_header.jpg[/url]

This flat ribbon cable connects to it by simply slotting it in:
[t]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_cable.jpg[/t]
[url]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_cable.jpg[/url]

[t]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_cable2.jpg[/t]
[url]https://dl.dropboxusercontent.com/u/10518681/Screenshots/img_cable2.jpg[/url]

I just don't know what to Google to find such a header. It's kind of like the CSI port on a Raspberry Pi, only without the latch (it just slots straight in instead). Thanks for any help in advance :)

[Zero-Point]

[QUOTE=scratch (nl);47146590]acetone and some peeling did it's job. Turns out it's an UV [URL="http://pdf.datasheetcatalog.com/datasheet/SGSThomsonMicroelectronics/mXrvwzx.pdf"]EPROM[/URL], meaning I can't do a lot with it as it's pre-programmed most likely. It has no window of any kind to erase it's current program.[/QUOTE]

Well, technically, if you were feeling adventurous, you could strip away the plastic housing to expose the chip and then glue your own little window onto it. :v:

Also, finally got around to working on my reflow oven again, took it apart and gutted the electronics, and I'm stumped on how to proceed for aesthetic purposes.
There's plenty of room for my control electronics in the front bottom, where the old electronics were located, but there was also a 2-digit 8-segment LED display for the timer, with its own little window through the front plastic, and I'm not sure if I should keep the front as-is and put an OLED display there for the temperature, solder-type and time display (could also potentially plot out the temperature curve on it for shiggles if I did that), or cut out a big enough rectangle that I can fit this 16x2 LCD display instead...

[woidoi]

good one, it'll otherwise sit there doing fuck all.

Got any suggestions to prevent pieces of the housing of fucking up the IC? I assume chipping it upside down so it all falls on the ground is a good idea.

[Zero-Point]

[QUOTE=scratch (nl);47147365]good one, it'll otherwise sit there doing fuck all.

Got any suggestions to prevent pieces of the housing of fucking up the IC? I assume chipping it upside down so it all falls on the ground is a good idea.[/QUOTE]

The trick I've seen used (never done it myself) was to use a rotary tool to grind away most of the plastic, then use a solvent/acid to do the rest, that way you're not really in danger of damaging the IC itself.
[media]http://www.youtube.com/watch?v=mT1FStxAVz4[/media]

[woidoi]

ah yes, I remember watching that video. It'd do the job but I have none of the tools/materials needed for this and no place to get acces to them either.

[Cakebatyr]

If you're willing to pay forward and back postage to Canada I have the tools you need :)

All the tools, none of the confidence... Except for the solvent part, I'm very confident in using solvents thanks to my chemistry background.

[gamerpaddy]

i made a coil winding machine controlled via android app
Damn, my english is screwed so hard in this video...

[url=http://www.directupload.net/file/d/3899/zejcqknr_png.htm][img]http://fs2.directupload.net/images/150215/temp/zejcqknr.png[/img][/url]
[url=http://www.directupload.net/file/d/3899/wexfg5ow_jpg.htm][img]http://fs2.directupload.net/images/150215/temp/wexfg5ow.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/7mbklboy_jpg.htm][img]http://fs1.directupload.net/images/150215/temp/7mbklboy.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/yed7wdb8_jpg.htm][img]http://fs2.directupload.net/images/150215/temp/yed7wdb8.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/7mgyw3kz_jpg.htm][img]http://fs2.directupload.net/images/150215/temp/7mgyw3kz.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/pcf38wml_jpg.htm][img]http://fs1.directupload.net/images/150215/temp/pcf38wml.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/d9bjvnuk_jpg.htm][img]http://fs2.directupload.net/images/150215/temp/d9bjvnuk.jpg[/img][/url]
[url=http://www.directupload.net/file/d/3899/ey5wc2c2_jpg.htm][img]http://fs1.directupload.net/images/150215/temp/ey5wc2c2.jpg[/img][/url]
And heres the video:
[video=youtube;VK0otkD6cM4]http://www.youtube.com/watch?v=VK0otkD6cM4[/video]

[LoneWolf_Recon]

That's a pretty sweet tool you made, what was the bluetooth module you used?

[pentium]

Whenever I need to remove stickers, especially paper substrate, WD-40 is amazing. It doesn't attach the plastic and after about ten minutes the sticker sometimes falls right off. Also works well for double sided foam tape and bandage adhesive.

So I've come into ownership of all the guts out of a CRT rear projection. No fancy fresnel lenses or even a frame. Just the two piece, logic board, the front panel, all the wires, the tubes and the three main lenses. It's currently being washed and will need to dry for a while before I even dare try plugging it back in but what can I do with it all? Have people been making cheap front projection units with these or anything?

[Cakebatyr]

Make a deathray.

[DrLuke]

Just heat it up with a hair dryer, it will peel off effortlessly.