• Arduino + Sound Sensor

    I got a sound sensor on Ebay some days ago, and decided to give it a try!
    Really simple, just made a code to light up the led when the volume was higher the ambient sound.

    Just for fun! ;)

    As many people have asked, here goes the code:

    Remember that there are many other ways of doing this, for example using the PWM function along with analogRead() and map().


  • Using Arduino to calculate Quadratic function

    This is a simple and quick code I made for teach variables with arduino programming,
    where we enter the variable numbers a, b, c in

    and we get the answer using the Serial Monitor..

    I won’t get in details about this code, it’s quite straightforward. But if you have any question, just ask! :)

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  • My HTPC 2.0

    Long ago, I wrote How I Made my HTPC at my place. Time passes and things change. End of year has arrived, Christmas and everything, so I decided to upgrade my system to a more efficient and cheaper one. The new choices were using a NAS (Network Attached Storage) allowing all files can be accessed from any machine connected to the network, in this case I am using Lacie Network Space 2 2TB storage. A Gigabit router TP-LINK , so far I’m very happy with this router, although. A media player WD-PLUS Live that has an embedded Linux and play videos in various formats, even FullHD , and access online content like YouTube and some radios.

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  • Moodlamp Mod

    I made some modifications in one of my projects, my moodlamp, where I mounted it in a CTRL huge key.

    I’m planning on releasing all the project as Open Hardware/Source, but due my lack time, it’s not on my website yet!
    Would you like to take a look at this project??

    :D


  • My DotKlok

    Hey, I got so exited about the DotKlok that I decided to build my own! As it’s quite difficult to buy one from here (I live in Florianópolis – Brazil), and to pay U$150 for the Kit wouldn’t work for me… So I want to build a good looking clock for my room, which I only have my computer and mobile as clock.

    First of all, I needed to buy the 24×16 Led Display from Sure Electronics, which I found for a good price at eBay (little cheaper then buying from the Website).

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  • Femtoduino: an ultrasmall arduino board

    This is amazing, perfect for those times when your have to create another board just to hold the atmega µC. I am looking forward to use this tiny board in some project in a near future. Congrats to Varesano for the project.

    You can check his project HERE.


  • Arduino-Based Digital Clock

    Wow, this is amazing! DOTKLOK is an open-source, hackable, Arduino-based digital clock that displays a series of unique time-telling animations.

    DOTKLOK: Game Time from The Latest Artists on Vimeo.

    DOTKLOK is an open-source, hackable, Arduino-based digital clock that displays a series of unique time-telling animations. The passing of time is depicted with numbers and abstract/geometric patterns such as Morse code and minimal analog clock faces, and includes animations inspired by classic video games such as Pong, Tetris, Pacman, and Space Invaders.

    You can buy the kit for U$150.00 and it assembled for U$200.00
    for me… I think I will build one, hell yeah I’m going to build one, just love it!!!

    You can check more information from dotklok’s website.


  • Open Hardware Definition 1.0 Released

    It’s finally here, a document that will help us to define what Open Hardware is, and to spread the idea. Open Software have been around for a long time, Open Hardware is still beginning, but already have a really big community out there, including me. I will add the logo to my next projects for sure!

    Now, to move forward, please HELP:

    This is a very important step in propelling our movement forward. PLEASE FORWARD FAR AND WIDE.

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  • Working with LEDs and Resistors

    The objective of this text is to help you to understand how Resistors work and use it in it’s most simple use, as a current limiter. If you want to know more about resistors and leds, check Here and Here.

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  • Building an Breathalyzer with MQ-3 and Arduino

    During the First Meeting of Electronic Arts in Florianópolis, we built a Breathalyzer using the Alcohol Gas Sensor MQ-3 and a Arduino Board to use in the last day of the meeting, in which we gave a party. You can see a quick video two posts below. Last days I received many emails asking for the code or how to make one, so I decided to build the sensor again, take pictures/videos and make a tutorial showing how you can make one, so here it is.

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