Raspberry Pi

  • Arduino Beer KeyboardNovember 22, 2012

    Do you know what you get if you combine 44 beer cans with an Arduino board and a Raspberry PI ? I tell you: fantastic user engagement!

    It happened at Webstock, event which took place in Bucharest this month. Staropramen, one of the sponsors of the event asked us for an innovative way to offer a trip to Prague to one of the event’s guests.

    So, we came up with a keyboard made out of 44 Staropramen beer cans. Each beer can was a key, and whenever someone touched it, the corresponding letter appeared on a large plasma screen (just like any regular computer keyboard).

    And the surprise was fantastic! The user experience and engagement overcame any expectation. Every single person who attended Webstock tried the keyboard and participated to the contest.

    Behind the scene, the system is built around an Arduino board and a few capacitive controllers (just like the ones which are inside smartphones’ touch screens), connected to a Raspberry PI board which controls the plasma screen display.

    Other hardware we used was the Sparkfun MPR121 Capacitive Touch Sensor Breakout Board (4 of them, each controlling 11 beer cans) and one Sparkfun MP3 Trigger Board which controls the sound effects.

    A movie and some photos took during the event can be found on the [website]
    (feel free to use them if you want, or download directly the photos as a zip archive).

    Via: Arduino Blog, Source: Robofun - Create

  • Christmas arrives in Cooking Hacks!!!November 12, 2012

    Christmas in Cooking Hacks - Arduino modules

    [Spanish]

    Ho ho ho!! Merry Christmas!!

    Cooking Hacks is preparing for Christmas! We know how difficult is to choose the best present for you and your friends so we would like to help you to find a good one.

    BotChristmas is really for kids. Now you can surprise them with their first personal computer using Raspberry Pi board. Let's start with an easy Linux distro which includes Scratch, a nice tool for kids to create their own games, or convert it in a complete Media Center.

    Now you will be able to use your modules and shields for Arduino in your Raspberry Pi with our Raspberry Pi to Arduino Shields connection bridge, adding more capabilities to this board.

    What about your brother who fliped when heard you talking about Arduino but only knows a few things about electronics? From Starter Kit for beginners to Wireles Lab Kit for experts, he will be able to use Arduino and imitate your awesome projects. This year, you can also use Waspmote Starter Kit in order to create your first Wireless Sensor Networks project. Let's communicate wirelessly and learn how to use the embedded accelerometer. As easy as using Arduino.

    And your cousin? Yes, the tech-addict! He always shows off about his new smartphone like an iPhone or an Android mobile phone. Now you can use Arduino on them and show him how to manage servos and leds through smartphones.

    Do you love Christmas lights? Are you sure you can make your own tree and decorate it with leds? If you are a handy person, we encourage you to show it!!

    Finally, if you like to give a present to someone but still don't know what, or you need a cheap Secret Santa's gift... why not a GIFT VOUCHER ? you can choose the value of your voucher from 10, 25, 50, 75, 100 and 150€! Your present can that way be anything from our site!

    Remember you can use a different shipping address in order to ship the present directly to your friend.

    Cooking Hacks wishes you a Merry Christmas and a Happy New Year 2013!!!

  • ¡¡La Navidad ha llegado a Cooking Hacks!!November 12, 2012

     Ho Ho Ho!! ¡¡Feliz Navidad!!

    ¡Cooking Hacks se prepara para Navidad! Sabemos lo difícil que es elegir el mejor regalo para ti y tus amigos, y nos gustaría ayudarte a encontrar el mejor.

    BotRealmente, la Navidad es para los niños. Ahora puedes sorprenderles con su primer ordenador usando Raspberry Pi. Empieza con una distribución de Linux sencilla que incluya Scratch, una herramienta para niños que les permite crear sus propios juegos, o ayúdales a convertir el PC en un Media Center

    Qué hay de ese hermano que se asombra cuando te oye hablar de Arduino y tiene nociones de electrónica... usando desde el Starter Kit, ideal para principiantes, hasta el Wireles Lab Kit para expertos, él podrá usar Arduino e imitar tus proyectos tan geniales. Este año, puedes también usar Waspmote Starter Kit para crear tu primer proyecto de Redes Sensoriales. Comunícate inalámbricamente y aprende cómo usar el acelerómetro que incorpora. Tan fácil como usar Arduino.

    ¿Y tu primo? Sí, ¡ése adicto a la tecnología! He siempre presume de su nuevo smartphone como el iPhone o el último Android. Ahora puedes usar Arduino con ellos y enseñarle cómo manejar servos y leds a través de los smartphones.

    ¿Te gustan las luces de Navidad? ¿Estás seguro que puedes crear tu propio árbol y decorarlo con leds? Si eres un manitas, ¡¡te animamos a que lo de demuestres!!

    Finalmente, si quieres regalar algo pero no sabes exactamente qué, o para aquellos que les ha tocado en el "regalo invisible" a alguien que le encanta la electrónica pero no sabes cómo acertar... ¿por qué no un VALE REGALO? Podrás elegir el valor del regalo desde 10 hasta 150€! ¡Él podrá elegir cualquier cosa de nuestro sitio!

    Recuerda que puedes usar una direcciĂłn diferente de envĂ­o para enviar directamente el regalo a tu amigo.

    COOKING HACKS OS DESEA UNA FELIZ NAVIDAD Y UN FELIZ AĂ‘O NUEVO 2013!!!

  • A Halloween Sound Trigger with Raspberry Pi and ArduinoOctober 29, 2012

    People have been asking me about interesting applications for the Raspberry Pi, and whether Raspberry Pi is an Arduino killer of some sort. The answer to the second question is no; in fact it is an Arduino augmenter. This blog post answers the first question with another question: how about a Haunted House sound effects machine?

    A new revision of the Early Release of Getting Started with Raspberry Pi came out last Friday. I read Matt Richardson’s chapter on using Pygame with the GPIO pins on the Pi, which included a simple Sound Sample player. I adapted his example to work with an Arduino that talks to the Pi over a serial connection; this skeletal (ahem) hookup could easily be incorporated into some sort of Halloween installation. I decided to use Arduino for reading the inputs because out of the box it is more robust and can handle a wider variety of inputs. Also, there are many existing Haunted House triggering demos out in the wild that use Arduino.

    First, you’ll need to prepare the trigger circuit. The following example uses three toggle switches, but you can replace those with any kind of on/off input. In a haunted house (or porch-based trick-or-treater installation), a PIR sensor would be handy for triggering based on proximity.

    Here’s the basic schematic:

    The 10k resistors can be replaced by the Arduino’s own internal pull-up resistors, if you know how to do that.

    I connected the Arduino to the Raspberry Pi using a USB cable. While I had the Pi hooked into a monitor, I found that I could just plug the Arduino through my Mac keyboard USB connector and it got enough power from that to work. If you have an older Raspberry Pi with polyfuses limiting the power on the USB port (check to see if you have 2 little green fuses marked “1104″ next to the USB ports), you may need an external hub, or run the Pi headless to free up a USB port.

    You’ll also need some sound files to play. I chose three from the Internet Archive: a generic scream, a Wilhelm Scream, and the classic Castle Thunder sample.

    When you press the buttons each sound will play once; Pygame’s mixer will even play all three at the same time if you have multiple trick-or-treaters invading your porch.

    Via and source: Make

  • Hacking Beer Cans for Fun and Publicity [Arduino+Raspberry Pi Hack]October 19, 2012

    Although beer is generally a good way to get people to come to your trade show booth, [Robofun.ru] decided to put a new spin on things. Instead of (or possibly in addition to) giving out beer, they decided to turn 40 Staropramen beer cans into a keyboard.

    This was done using an Arduino hooked up to four Sparkfun MPR121 Capacitive Touch Sensor Breakout Boards, allowing them to act as keys. These inputs are translated via the Arduino into a standard output (we assume USB) that can be plugged into any computer.  Additionally, a Sparkfun MP3 trigger board was used to control the sound effects.  Rounding out the build, a Raspberry Pi computer was used to run the human machine interface, a large plasma display.

    Via: Hack a Day, Source: Robofun

  • Host your own blog from a Raspberry Pi computerOctober 15, 2012

    Now that you can own a Raspberry Pi and make some awesome projects thanks to the Raspberry Pi to Arduino Shield Connection Bridge, we are going to share some interesting post of nice applications for them.

    lightnin9 writes:

    Now everybody knows it’s way smarter to just pay someone to host your website. But what not everybody knows is that it’s way more punk rock to Do it Yourself. So what follows are some tips / pointers / instructions for setting up your own home webserver (which will burn a scant 2 watts) using all free, open source software, a Raspberry Pi, and your home internet connection.

    The emphasis here is on lightweight, which fits well with the Raspberry Pi. Sure, you can setup a blog with wordpress or Django, and they will run (I’ve tried it, at least with Django). But they probably will run rather slowly. Why? The rPi doesn’t have a lot of memory or processing power, and a database / front end model requires a decent amount of that. If your site / blog ever gets much traffic, it’ll likely buckle under the load. The answer? Just serve up plain old static HTML pages. It’s fast, secure, simple, and easy on the rPi’s limited resources. But rather than painstakingly handcodeing each new blog entry, you can use a static html generator like Pelican to make it easy

    Via: Electronics-Lab, Source: Instructables

  • Raspberry Pi to Arduino shields connection bridgeOctober 8, 2012

    Raspi

    We are happy to announce at last the new development board we have been doing to use with Raspberry!

    The idea behind the Raspberry Pi to Arduino shields connection bridge is to allow to use any of the shields, boards and modules designed for Arduino in Raspberry Pi. It includes also the possibility of connecting digital and analog sensors, using the same pinout of Arduino but with the power and capabilities of Raspberry.

    In order to make complete the compatibility we have created the arduPi library which allows to use Raspberry with the same code used in Arduino. To do so, we have implemented conversion functions so that you can control in the same way as in Arduino all the I/O interfaces: i2C, SPI, UART, analog, digital, in Raspberry Pi.

    Let's summarize what we can do using this shield along with the arduPi library:

    • Connect any Arduino Wireless module in Raspberry. Some examples: XBee 802.15.4/XBee ZigBee, RFID, NFC, Bluetooth, Bluetooth Pro, Wifi, GPRS, 3G
    • Connect any sensor (analog 0-5V, digital) to Raspberry Pi with a precession of 16b using the ADC integrated. Connect also complex sensors through i2C and UART buses
    • Connect any Arduino specific shield such as: Radiation sensor shield, CanBus, Relay shield,...
    • Connect any electronic module or actuator which works over i2C, SPI, UART

    All the information can be found in this tutorial: Raspberry Pi to Arduino shields connection bridge

    Do you NOT own your Raspberry Pi yet? You will be able to find several Starter Kits including this awesome board in order to start with Raspberry Pi.

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