Monday, December 28, 2009

FTDI USB to Serial

Hack a Day has exactly the tutorial I am needing: Introduction to FTDI bitbang mode.

It is also a Windows Serial thought USB programming tutorial for dummies.

Reducing Browser Memory Leaks with Google Maps API

Reducing Browser Memory Leaks

The Google Maps API encourages the use of function closures, and the API event handling system GEvent attaches events to DOM nodes in such a way that almost inevitably causes some browsers to leak memory, particularly Internet Explorer. Version 2 of the Maps API introduces a new method, GUnload(), that will remove most of the circular references that cause these leaks. You should call GUnload() in the onunload event of your page to reduce the potential that your application leaks memory:


Using this function has virtually eliminated Internet Explorer memory leaks in Google Maps, though you should test for memory leaks on your own site using tools like Drip if you are noticing memory consumption problems.


Internal Projects

We can't open much about our internal projects here at IDEIA. But now that University students and and professors, our main customers are on vacation, we have more time to spend on some internal projects which were put aside during the year.

One of them, in cooperation with the IDEIA's Optics Lab, is related to digitize images captured with a regular composite video camera. The guy from the Optics Lab have a EasyCAP USB device, which I have to put to work with my linux box.

I didn't find an out of the box solution, or a few steps tutorial to put it to work during the year. Looking again, I've found a couple of forums, tutorials, and links:

I hope these might be useful to others trying to make this EasyCAP thing work with Linux.

Wednesday, December 23, 2009

Information Visualization

Since I had done the visualization class at grad school, the world wans't the same anymore. To look at informational illustrations and graphic plots is being a real cool exercise. And when I have to use some software to plot some chart, quickly come back to my mind when our professor were telling us if we went to his office, he will receive us with a box of paper tissue to wipe our tears away...

So, when I read the slashdot article about a Ronald Knief collecting charts of nuclear reactors, originally published in issues of Nuclear Engineering International, I became very curious.

But after reading those articles I had reached the BibliOdissey blog, which has much more digitized illustrations, from artistic illustrations, through info charts, to puzzles. It is really awesome... It has lots of illustrations. They are all hires illustrations, the BibliOdissey has a Flickr gallery with them in 5156 x 3244.

Here are some of my favorites: