Cheap emergency cell charger

I whipped together this thing before a longer fishing trip in the mountains, youll need these things:

-3 pcs 3LR12 batteries
-cigarette lighter socket
-Car charger
-wires

If you have a car charger already, you can build this for a few bucks.

18 inch subwoofer Project

This is a project i did back in 2007 when i was very interested in hifi and huge amounts of low frequency sound. The goal with this project where to get flat response down to 15 hz (thats below the human hearing limit, but you can still feel it).

Anyone that has seen a movie with a SVS subwoofer for eksample knows what feeling it gives you, this is so to speak an very oversized version of the SVS tubes. The driver i chose was the Soundsplinter RL-P18

When i'm writing this i'm pulling most of it from memory so it wont be the most accurate worklog, but it'll do :)

Below is a couple of 3D renderings i did in Solidworks.

 

Ps3 Xbox Thumbstick switch

Is it just me who is not comfortable with the ps3 controller?
I have been playing Playstation since 1996 and yet after 14 years of Sony I believe that the Xbox 360 has a better controller, mainly because it has better Thumbsticks but also because it has better triggers.

I have made a little mini guide to how to switch theThumbsticks with sticks from the (old) Xbox, these sticks look identical externally with those of the Xbox 360 and have the same feeling as those from 360.