Category Archives: MA

HITB CTF Crew is Expanding

The new HITB CTF crew is looking for new talent, particularly challenge writers and web developers. If you have skills in reverse engineering, bug hunting, and exploit writing (no script kiddies claiming to be “hackers” please) or if you have elite web development skills (python, php, bash, mysql, etc), No script kiddies or wanna-be “HACKERS”! You mad? Got skillz? Drop an e-mail to CTF Crews to ctfi...@hackinthebox.org

Python Meetup April in Hackerspacekl

Sorry for failing to post on this blog. Hackerspacekl is going to host a python meetup this weekend!!!

This is python monthly meetup. This time we going to have it in here. This time we going to have a free flow event.

We will start with a talk, to be confirmed. Then a series of knowledge sharing, not limited to talk, and show and tell of your project done in python.

Talk that we have confirmed is

  • Dexterity on Plone by either kagesenshi / kaeru
  • Using elasticsearch with python by yours truly
  • Django related topic by renyi

If you drive I recommend that you share a car, if on public transport, take a LRT to Taman Bahagia, and that Bus 626 to uptown, or take a taxi from there.

House rules applies, non members can’t use the soldering iron or the components. But they can use the room. But we are python meetup, so we definitely not going to need that.

The event detail is in http://www.eventbrite.com/event/3194836843

As usual my contact is

016 206 5780

or

email sweester at gmail dot com

 

We are open 3rd Feb i.e TODAY

Alrighty folks, CNY is just over, we will open today!!!!! Not just today, we will open NEXT FRIDAY AS WELL.

Today the agenda is, bring your own project day. Anything you want to work on or want to know come to us.

If you can’t make it today, come next friday, it will be another bring your own project day!!!!

P.S I Apologize for the late notification

The Vortex Lamp

Yet another electro-mechanical lamp/light project. A vortex lamp for your desktop, living room or as a night light.

The lamp produces a spinning water vortex inside a glass, that is then illuminated with LEDs.

Another look (sorry for the poor photo quality)

Similar to how a magnetic stirrer works, a motor will spin a permanent magnet creating a spinning magnetic field. Placing a ferromagnetic metal within that field will cause it to spin as well. The metal spins without making any physical contact with the magnet or motor. The spinning motion of the metal stirs the water in the glass, creating a twister/vortex effect.

The stirrer used is a paperclip, coated with epoxy (to prevent rusting)


Parts are pretty basic. The (somewhat) difficult thing is sourcing for the Neodymium magnet . Any kind of magnet won’t do, especially those ferrite fridge magnets. It has be a neodymium magnet for it to work. Or at least the old school samarium cobalt magnet (if you can find one). I got mine from a dead hard drive. Other source of these magnets would be those magnet therapy bracelets (though the price is an utter rip-off). If not, you’re going to have to shop online as neodymium can’t really be purchased off the shelf (at least in this part of the world).
Magnet stuck to the middle of a standard PC cooling fan. The blades were cut off.
A tall drinking glass as the vortex cylinder.
The thickness of the bottom of the glass is very important. If it’s too thick, then the magnetic field that reaches the stirrer will be too weak. If you’re stuck with a thick bottomed glass, put a lid on it and use it upside down like I did.
The shape and depth or the vortex is more dependant on the shape and size of the stirrer (paperclip) used. Fiddle around with different sizes to get your preferred vortex.
The fins house the LEDs, while limiting the light into a narrow vertical beam. I found that the beam, being perpendicular to the vortex, produces the best illumination effect compared to other placements. The fins were cut from old DVD case.
Final touch, light diffuser added on the fin’s opening. It is made of clear transparency plastics layered with double sided tape. These tapes make quite good light diffuser.
So that’s it, happy hacking/ making.