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An accelerometer is subject to dynamic (or external) and static (gravity) accelerations (see my thesis, chapter 5.1). This means that whenever you are interested in measuring dynamic accelerations rather than gravity you have to compensate for gravity. I implemented a very simple approach for doing so, assuming that you have a 9 degrees of measurement inertial

When you have created two breakout boards for the ADXL345 accelerometer and the ITG3200 gyroscope and you have those two nice sensors what you can do? Simple: create an implementation of an Attitude sensor fusion which runs with those chips! So, I started documenting myself and reading lot of stuff on IMUs (inertial measurement units – composed by an

UPDATE: The following guide, originally written for Firefox 2, has been used successfully on Firefox 3, 3.5, 3.6, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Users of Firefox Portable edition (same versions) also have been successful using this guide. The Windows computers available at my University permits login only by autenticated users (students) who don’t

Femtoduino is an ultrasmall (20.7×15.2 mm) libre Arduino compatible board. By using the QFN32 version of the ATMEGA 328p, 0.05″ connectors, 0402 components and removing everything not strictly necessary, I’ve been able to design and hand build an Arduino compatible board which is very small (20.7×15.2 mm) and ultra light (2g) but has exactly the

Here at ULPGC I’m following a Robotics course. In the practical part of the exam we have to write some applications to operating some didactics robots we have (Rhino XR-4 and SCARA Robots). Each robot is connected to a Controller (Rhino Mark-4) which can be connected to a PC to send commands to the Controller in order

FreeIMU is an ongoing research project which aims to design Open Hardware 9/10 DOM/DOF Inertial Measurement Units as well as easy to use Orientation and Motion Sensing libraries, built on top of the Arduino platform.The goal of the FreeIMU Framework is to simplify the development of projects based upon the most powerful and new consumer

After more than one year of (discontinued) development I finally finished this website.. Obviously there is still lot to do however I hope to finalize this website soon!

It has been asked a lot by the video module users, by mail or through video module project issue tracker, to backport the features which will be available in the next to be realized video module for Drupal 5.X. The backport has been created for one of my consulting clients then is available. However I

We just created a new Video Group on groups.drupal.org. This groups aims to get ideas and coordinate efforts between the different people involved in the video content modules development. The goal is to provide drupal with an easy, powerful and extensible support for videos. The last months some new video related Drupal modules have been published, each

As soon as I ported this website to Drupal 5.X I noticed that all the Javascript cool stuff where no more available… I investigated the problem: looks like in 5.X themes it’s available a variable called $scripts which holds javascript imports. Without printing this variable into the head section of the theme all the Javascript does not