Showing posts with label Hardware. Show all posts
Showing posts with label Hardware. Show all posts

Tuesday, April 15, 2014

Fixing a videocard with busted capacitors

This is not an instruction of any sort, just a bunch of pics of a really sad videocard. I thought small aluminium capacitors were less prone to popping like this, but appeently I was wrong.
I'll try to be a videocard coroner and go understand how it died.
Three pretty dead capacitors


Tuesday, April 8, 2014

How to disassemble Synology NAS DS213+ with pictures

Synology NAS DS213+
Please excuse the quality of the pictures in these articles! I don't have a real camera and I'm just using my potato-phone. This is a pretty detailed disassembly instruction though. You probably won't need to clean this thing too frequently, but I'd clean out the dust at least once a year.

Monday, April 7, 2014

How to replace computer mouse button on your own

So, here is the problem: Let's say you've got a mouse that works like a touchpad - the micro button is drowned all the way in, and even a slight touch would trigger a click/doubleclick event. Not good!  I don't like them mice working like touchpads!
Solution: Get a new one.
Bettter soultion:

Thursday, April 3, 2014

Is mining killing scientific research? ResearchCoin!

I've been into folding@home somewhat ~5 years ago, back in 2008 I believe... And I had a lot of fun helping - or, at least I thought I was helping to find a cure for all known diseases.
I had to stop though, and not because of electricity costs, not because of the noise or the heat - just because I got bored. It's like a game - you play for a little while, and then stop out of boredom. I farmed for a good 3-4 months though!

What has changed? 

Tuesday, April 1, 2014

What is hot glue? Where to buy hot glue gun and how to use.

This thing is just irreplacable! I don't know how I used to live without it.
It's reaaaly cheap as well on ebay: Heating Hot Melt 20W Glue Gun Crafts Album Repair with Glue Sticks 28mm 7mm
You can probably find a dispenser/gun for a couple of dollars. I ordered a gun and 30 sticks for just 13.25$. It's not like you're gonna be using a stick per day, 30 stick will probably cover you for a year or more.

What is it for?

Monday, March 31, 2014

Replacing battereis with an AC adapter for a LED UV pocket flashlight

I had an idea of making a 9-LED UV/Blacklight flashlight, and to use it as a small UV-lamp. And I also wanted it to work constantly, without having to replace batteries or recharge li-ion accumulators.

Here is an example of what you can get on Ebay for just 2$: 9 LED Ultra Violet UV Blacklight MINI Portable Flashlight Torch Light Lamp CSI
You could buy a big and expensive UV-lamp, but it's not a good option because of
a) power consumtion;
b) amount of UV they produce.

Sunday, March 30, 2014

Selfmade (modified) variable voltage AC using step down converter

Let's suppose that you need to plug something in that requires less voltage than any of your spare ACs give out. I had to make a thingy work that needed 3.5-4V max, but I only had 5,9 and 12 volts ACs at my disposal. What do you do in that case? Well of course you could order voltage-variable AC on ebay, that comes with a lot of plugs too! But then you'd have to wait for shipping and pay somewhat 10$, but you already have a lot of ACs, why not upgrade them? Besides, the majority of variable ACs are not really adjustable, they have 3-5-9-12 switch, and that's it. So you can't really use thouse if you need exactly 4.2V output.

The things you'll need:

Replacing Sony reader PRS-500 battery

I inherited an old Sony e-ink reader Sony PRS-500. 
I'm unsure of how old this thing is, but I would argue about 6 or 7 years. Most of that time it was lying around unused and forgotten, but was actively used in the first couple of years after purchase.

Stock battery: LIS1356HNPAQ (SY6), 850mAh, 3.7V;
After 7 the battery deteriorated, and I could only go through 100-150 pages before it shut down. 

Moreover, it was missing the original charger, but that issue was resolved swiftly and easily. I simply had to find appropriate center-positive plug, and solder it with red and black wire of a USB-plug. The original charger was supposed to be 5.2V, USB's voltage is 5.0V, which is not much of difference.

Now, let's move on to the battery replacement. There are two options I could find: