Dec 24

tux christmas

Nov 20

Openmoko Sapo Codebits

As I post here previously, I went to Sapo Codebits  event in the last week, with my friends. The first day of the event and the morning of the second day was only conferences, the rest of the event was several contests, including a 24-hours programming contest.

In the first day of the event I met Marcus Bauer, the TangoGPS creator, he  shown some OpenMoko phones there and also gave a presentation about OpenMoko, he shown me how to install debian in a freerunner in a few minutes, using the Hackable1 distro, a very cool and easy way to try out debian on the neo SD card.

I participated in the 24-hours programming competition, my idea was turn my freerunner in a mouse and gamepad (like the wiimote) using the accelerometers. My knowledge about the accelerometers are very low, so I started getting the accelerometers data with a Python script to see the data behavior. I noticed a wrong behavior when I turn my freerunner quickly, the accelerometer seems to stall,  after a quick search in the ML archive I found that some kernel’s have this behavior, so I flash my freerunner with some old kernel’s until found a stable kernel. The accelerometer mouse required a lot of work until I get a smooth mouse movement. I also don’t knew that the acelerometers are very sensitive, and the data for the accelerometer suffer changes even if the freerunner are steady in a table. The gamepad accelerometer required less work, I used some of the ReMoko code with a few changes in the event sending methods, in order to send continues key presses, to the freerunner acts like a really gamepad. In the morning when I had my project almost completed, after some hours without sleep, I broken the BlueZ libs in my laptop, after doing a stupid mistake in the cross compiling process, this cost me about a hour to put everything in place again:). But I found some time to wrote a beta UI for my project and gave the project the silly name: AccelMoko.

After the competition ends, starts the presentation session of the projects developed during the event, the participants have only 90 seconds to present the projects to the judge and audience, when one participant finish the time another participant starts talking, in a non stop way, 82 projects enter in the contest this year (small games, web stuff, ideas …). My project was in the 20th position, my presentation had a very good feedback from the audience (they have a live voting system, with two choices “I like” and “I don´t like”). When all the participants finished there presentation, the judge gathered for about a hour to decide the winning projects.

To be sincere, I only participate in contest in a “sportive” way, I don’t had any hope to win, but… my project was the most voted by the audience and also I got the first place in the judge votes :D. So a OpenMoko project wins the Sapo Codebits 2008 competition.

In the next weeks I will merge the AccelMoko code into the ReMoko project.

Oct 19


The first release of BlueMaemo is now available on garage.maemo. I’m very happy with all the community feedback and support, thanks to all the guys that sent me emails and made blog posts about BlueMaemo.

Download instructions and other information can be found here.

Oct 11

BlueMaemo is my new Open Source project :), basically BlueMaemo is a port of my Google Summer of Code project, ReMoko, to the Maemo powered devices.

With BlueMaemo you can turn any Maemo-powered devices in a mixed Bluetooth keyboard-and-mouse device through the HID Bluetooth profile. Right now the program still in a alpha version, I’ve planned the first release for the next week. The program functionalities are very similar to the ReMoko functionalities, exception to the accelerometer profile that doesn’t exist in BlueMaemo, because any of the Maemo devices have accelerometer capabilities. The program UI still very beta right now, I’ve to make some changes in order to support different UI themes. In order to support the maemo devices without a hardware keyboard, I had to add a virtual keyboard to the keyboard profile, I reuse a keyboard shipped in the python-efl demos, this virtual keyboard are made in INdT Brazil, so the credits of the virtual keyboard graphics belongs to them.

Sep 11

nokia n810

Aug 29

ReMoko Acceleromter profile

A new version of ReMoko is now available for download, the key feature of this new version is the possibility to send events through accelerometer gestures. I used the Paul’s gestures daemon, also made in the GSoC, to catch the gestures. All the gestures are configurable, so you can control a slideshow, a presentation or any program that you want. I’m waiting for some nice community videos of ReMoko :)

ReMoko Acceleromter profile

Aug 19

ReMoko is my Google Summer of code project,  is a application that can make Openmoko-powered devices appear to be a mixed Bluetooth keyboard-and-mouse device, through a full Bluetooth HID driver. Here are some screenshots of the UI:

remoko menu

Remoko Menu


remoko mouse

 Remoko Mouse Profile


Remoko presentation profile

Remoko Presentation Profile


Remoko multimedia profile

Remoko Multimedia Profile


More information here.

Aug 18

In the last months I worked for Google as part of Google Summer of Code program, the program was a very good experience for me, I learned a lot and meet very interesting people that help me in my project. Now I gonna slow down my work to rest a little bit, but soon I will be back to improve my open source projects.

I have to thank my mentor Daniel Willmann that helped me in all the OpenMoko stuff, Claudio Takahasi that helped me in some BlueZ related problems and all Google Staff that made Google Summer of Code a incredible learning experience, specially to Leslie Hawthorn for this very hard work, responding to thousand of mails, shipping stuff and resolving all the problem in few minutes. LH you never sleeps ? :)

Jun 23

Neo FreeRunner

Today in the morning I received my OpenMoko Neo Freerunner, thanks to the OpenMoko inc. to give cool stuff to the Google Summer of Code students :)

Neo FreeRunner

Neo FreeRunner

May 26

Beautiful Code

Today I received my surprise gift for my participation in Google Summer of Code, was I expected it is a book, a really good one :)

Google sent me a copy of Beautiful Code, this book is a compilation of articles here leading programmers explain how they think and how they resolve common problems during their programming.

Google sent the book by FedEx in a economical rate, that is really fast, I get the book in a few days, some guys in the students private mailinglist told me that get the book in Europe in less than 3 days, one of those guys calculated that the book traveled at a average speed of 112 km/h :)

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