[QUOTE=DrDevil;43146204]Well, regarding the PCB part, I can recommend this video series: [url]http://www.youtube.com/watch?v=VXE_dh38HjU[/url]
Otherwise, good luck![/QUOTE]
Ah yes, ive seen that one before, Dave is the best! Thanks!
[QUOTE=nutcake;43145894]Can easily take the front off but the back has weird screws...[/QUOTE]
You're looking for one of these aren't you?
[img]http://media.digikey.com/photos/Wiha/mfg719%20spanner%20bit%20series.jpg[/img]
Most security bit sets have a few of them, in your case however you might be able to take them out with a normal flat blade screwdriver since they aren't screwed in all the way.
if you have a dremel you could probably cut a coin to do the job
[editline]11th December 2013[/editline]
although you probably really should own a vice to do the job
or cut a slot in the screw head.
I have a few of those screw bits and I've always wondered what they were for. Now I know. Every day is a school day.
[QUOTE=Leestons;43148294][url]http://www.hamgadgets.com/blog/2013/11/this-just-takes-the-cake/[/url] :suicide:[/QUOTE]
Jesus christ
I've managed to do a less worse version of the last one by being dumb, it didnt really matter though and desoldering those are a fucking pain in the ass, but oh god those others is the worst I've ever seen, my first ever solder joints were better than those
[QUOTE=Tobba;43152302]Jesus christ
I've managed to do a less worse version of the last one by being dumb, it didnt really matter though and desoldering those are a fucking pain in the ass, but oh god those others is the worst I've ever seen, my first ever solder joints were better than those[/QUOTE]
It's almost like he's melted the solder in a pan and just dripped it over the components.
[editline]12th December 2013[/editline]
I haven't soldered in about 6 years and I've only done it less than 5 times in total. I wonder how bad my soldering will be today.
Bah, final for a course on differential equations and complex analysis tomorrow.
The equations and mathematical notation makes it look scary:
[img]http://img839.imageshack.us/img839/5083/62166439.png[/img]
But it's all memorizing solving algorithms, and not that hard >.>
*Must...not...panic...after seeing first question*
[editline]ed[/editline]
About half of those integral signs should technically be [img]http://upload.wikimedia.org/wikipedia/commons/thumb/b/bd/OintctrclockwiseLaTeX.svg/16px-OintctrclockwiseLaTeX.svg.png[/img] signs, which makes it look even scarier.
Oh the horror.
Reaction on Facebook:
[img]https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash3/1503915_10201823057275764_1018862886_n.jpg[/img]
Couldn't do half of the questions on the exam... (the average for the course should be ~70%, but due to an easy midterm, it was something like 84% average, so the test was more or less designed to be failed...)
What temprature should I use for basic soldering? I got this soldering station with adjustable temprature and I usually set it around ~250 - 300 degrees I believe.
[QUOTE=scratch (nl);43173289]What temprature should I use for basic soldering? I got this soldering station with adjustable temprature and I usually set it around ~250 - 300 degrees I believe.[/QUOTE]
I've found 355 deg C is a well rounded temperature for both 60/40 and lead-free.
There is no real fixed temperature for soldering, it varies significantly with copper thickness, pad size, tenting, ground plane size, component lead length, iron power and the speed of thermal recovery.
In general it should be high enough to melt the solder within 2-3 seconds, also it should not be hot enough to turn flux residue black or require very frequent cleaning and tinning of the tip.
For desoldering you can be more brutal if you don't care about the board, just avoid applying heat for too long particularly with electrolytic caps.
If you're having trouble heating a joint apply a little fresh solder to the tip.
Whats a good circuit simulation software? I have only really used crocodile clips in school but from what I remember it didnt really have many components past teh basics (resistors/transistors, 555 microchips...)
[QUOTE=Richy19;43180343]Whats a good circuit simulation software? I have only really used crocodile clips in school but from what I remember it didnt really have many components past teh basics (resistors/transistors, 555 microchips...)[/QUOTE]
[url]https://docs.google.com/document/d/1nfxHbnyRpEh2ijoaGfrWeaZkhuve6mrQRzgY7IHtVaI/edit?usp=sharing[/url]
I recommend LTSpice, once you get used to the interface it's really good, or java circuit simulator for a better visualization.
[QUOTE=Chryseus;43180459]
java circuit simulator.[/QUOTE]
[URL=http://www.falstad.com/circuit/] this [/URL]
[QUOTE=Chryseus;43180459][url]https://docs.google.com/document/d/1nfxHbnyRpEh2ijoaGfrWeaZkhuve6mrQRzgY7IHtVaI/edit?usp=sharing[/url]
I recommend LTSpice, once you get used to the interface it's really good, or java circuit simulator for a better visualization.[/QUOTE]
[QUOTE=Leestons;43180513][URL=http://www.falstad.com/circuit/] this [/URL][/QUOTE]
Are either of these able to import new circuit components? As in to expand the microchips and stuff?
[QUOTE=Leestons;43180513][URL=http://www.falstad.com/circuit/] this [/URL][/QUOTE]
Keep in mind the simulation and component model quality isn't that good, you may get completely incorrect results so if you're unsure double check with a proper SPICE simulator.
[QUOTE=Richy19;43180521]Are either of these able to import new circuit components? As in to expand the microchips and stuff?[/QUOTE]
LTSpice is able to import any SPICE model.
[QUOTE=Richy19;43180521]Are either of these able to import new circuit components? As in to expand the microchips and stuff?[/QUOTE]
You are probably better off just building something rather than simulating it if you are using microcontrollers.
[QUOTE=ddrl46;43180779]You are probably better off just building something rather than simulating it if you are using microcontrollers.[/QUOTE]
If you're using the micro as digital control for something analogue it can still be useful to verify the analogue part of your design.
Hobbyking their overly cheap soldering station (typical Hakko 936 clone) is in stock in the EU again: [url]http://hobbyking.com/hobbyking/store/__32515__Soldering_Station_with_Adjustable_Heat_Range_with_EU_plug_EU_warehouse_.html[/url].
Couldn't resist ordering one at that price :v:.
christ that is cheap. I wish I didn't spend like 60 euros on a soldering station. Buying at a store with a vendor wanting to make profit gets what he wants.
[editline]15th December 2013[/editline]
Do they charge shipment costs? I can't find it anywhere on their site without making an account.
Yes they charge €6,75 within the Netherlands if you order from their European warehouse. Here is a review of the station: [url]https://www.youtube.com/watch?v=TP0etU7mTwU[/url], it's not the greatest but what do you want for 14 euros (if you stay on the product page for about 5 minutes you get a better deal by the way).
that is a silly mechanic but I am okay with it :v:
CPU upgrade apparently was permanently locked at an x4 multiplier.
[img]http://i11.photobucket.com/albums/a166/ballsandy/Computer%20related/IMG_4169.jpg[/img]
Not anymore. Now I can set it to x3.
[img]http://i.imgur.com/RrrfJbu.png[/img]
Hows that for a deal?
[QUOTE=pentium;43197803]CPU upgrade apparently was permanently locked at an x4 multiplier.
[...]
Not anymore. Now I can set it to x3.[/QUOTE]
Is that supposed to be a Kingston FPGA or what?
[QUOTE=LoneWolf_Recon;43200289]Is that supposed to be a Kingston FPGA or what?[/QUOTE]
Looks like it's a AMD cpu upgrade module made by Kingston.
Pentium never fails at digging up weird computer related things.
[QUOTE=LoneWolf_Recon;43200289]Is that supposed to be a Kingston FPGA or what?[/QUOTE]
I [I]think[/I] it's a CPU upgrade for the ole' 486 era computers.
[QUOTE=O Cheerios O;43200914]Looks like it's a AMD cpu upgrade module made by Kingston.
Pentium never fails at digging up weird computer related things.[/QUOTE]
AMD Am5x86-P75 133mhz CPU for Socket 1, 2 and 3 machines. This one in particular sold by Kingston under the name TurboChip. They overclock well to 150mhz.
Essentially it gave you the performance of a 75mhz Pentium on a 486 machine (90mhz with an OC). They essentially ruled the end of the 486 era until the triple digit frequency Pentiums became cheap.
My problem is that like most CPU's it expected a 33mhz FSB but my machine had a 50mhz FSB and the multiplier would push it past the OC limit to 200mhz. Reducing the multiplier to x3 would let me run at the 150mhz level.
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