ratb0t

This is the ratb0t, he has a nervous behavior and remainds me of a rat.. :]

I´m using an Arduino Diecimila to control the steering servo and the traction motor.

The XBee module receives data from another Arduino, this one has a wii nunchuck controller attached.

Next Step: make it autonomous

Update:
I forgot to tell a little story about this little and nervous fellow.
One day my mother told me she had one hair-removal thing broken (Braun Silk Epil brand ), and she said that she would bring it to me so that I fixed it.
Of course I accepted, but I must confess, I never ever tried to fix it :)

This made me think a lot on how could I twist it and use it to give life to a robot.

The most difficult part was to transform the front blades onto a wheel, I did it using pieces of bike air-chamber, rubber and hot glue.
I like the final result and it works quite well!

Shame on me because I didn´t document the building proccess.. I will try not to repeat it :)

If you have some interesting mechanical broken items I accept them :)

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Farrusco RC

I wanted to keep working with the XBee modules, and I thought it would be cool to control Farrusco.

So, first I used 2 potenciometers and assigned one to each motor.. and then I used a nunchuck controller.
Both require a learning curve and it’s only after a while that you start to feel the touch  :]

This is the code I´m using to control the robot with the Nunchuck


Serial Comunication between Arduinos – With Wire & Wireless

— please check an updated code sample on the following post —
http://lab.guilhermemartins.net/2013/08/01/new-basic-arduino-serial-communication/

 

I´ve created this example to make two Arduinos talk in a simple and clear fashion.
You will see below an example with wires, and another one without wires.

Continue reading Serial Comunication between Arduinos – With Wire & Wireless

Snail Light Seeker on WIRED :]

Build It. Share It. Profit. Can Open Source Hardware Work?

My Snail bot is on WIRED Magazine!!!     Amazing!   :D

WIRED Magazine wrote an excellent article about Arduino and open-hardware. My Snail bot is one of the four applications featured in the article.

I found some SEVERE problems. They didn´t place the sensor antennas in the correct position.. and its author name (me) isn´t featured anywhere.

But what the heck..  my “Snail Light Seeker” is on WIRED, together with ThingM and Adafruit produts  :]

It´s a very interesting article and a must read:
WIRED Arduino Article Link

Robot Fácil com Arduino – 1ª Parte

ENGLISH VERSION

Actualização:

Aqui vai a tradução à muito esperada deste tutorial, espero que vos seja útil.

Decidi remover a Ponte-H, o motor agora está directamente ligado às pilhas AA e o Arduino é alimentado por uma pilha de 9V. Este pequeno robot apenas anda em frente (para já).

Na 2ª parte vou adiccionar a Ponte-H e dois botões Bump. Assim o nosso pequeno robot poderá evitar obstáculos mudando de direcção.

Continue reading Robot Fácil com Arduino – 1ª Parte

Campus Party 2008

Ibero American Countries gather to diffuse digital boundaries, and to avoid digital exclusion.

Astronomy, Robotics, Innovation, Creativity, Modding and Digital Pleasure were the main areas where participants could share their knowledge and experience.

I went into the Robotics area, all the participants were very nice, I´ve met lots of interesting people from ibero-american countries. And there were really amazing Robotics projects!

One big thanks goes to Leonel Moura, he was the one who sent me the link to this event, and another big thanks to Alejandro for inviting me.

I will return to Portugal on Sunday, with a nice felling of hope for a better and unified world.
It was a great event!

22 robots, called skybot were built by the participants, one robot for each country and the final result was really amazing! Congratulations to all the participants! It has been a pleasure!

Robots can make this world a better world !!!    :]

Radar Simulator

Few days ago I started wondering how could I make a Radar Simulator with Processing.
I have already placed an ultrasound range finder on a servo motor and sent its data into the radar program, one video will be posted soon.

Now I want to have my wireless communication module setup complete and working on a robot, and I can have the sensor data being displayed on a screen as the robots move around the space. This will be a visual reference of the robot perception, it is also a good exercise of physical computing.

This applet simulates the sensor data through the Y mouse coordinate, have fun :]

Come Together – Rui Horta

I´ve started working with Rui Horta in September ‘ 08 on a play called “Come Together”.
My work consists on the development of visual projections on stage.
I think the most difficult task was to syncronize the animations with the coreography.. yet, the reward was the final result.. amazing!!

My partner Rui Madeira has done a great work programming the application where the videos run.

http://www.cnb.pt/gca/?id=80