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Turning the Raspberry Pi Into an FM Transmitter - Imperial College Robotics Society Wiki

Turning the Raspberry Pi Into an FM Transmitter - Imperial College Robotics Society Wiki
Steps to play sound: (Created by Oliver Mattos and Oskar Weigl. Code is GPL) sudo python >>> import PiFm >>> PiFm.play_sound("sound.wav") Now connect a 70cm (optimally, ~20cm will do) or so plain wire to GPIO 4 (which is pin 7 on header P1) to act as an antenna, and tune an FM radio to 103.3Mhz. Download the module here: [Download Now!] (this contains both source and a ready to go binary. New! sudo . How to change the broadcast frequency Run the . The second command line argument is the frequency to transmit on, as a number in Mhz. sudo . It will work from about 1Mhz up to 250Mhz, although the useful FM band is 88 Mhz to 108 Mhz in most countries. Most radio receivers want a signal to be an odd multiple of 0.1 MHz to work properly. The details of how it works Below is some code that was hacked together over a few hours at the Code Club pihack. If you're v. smart, you might be able to get stereo going! Accessing Hardware

Shrunk down an Arduino to the size of a finger-tip! by Open Source RF RFduino: A finger-tip sized, Arduino compatible, wireless enabled microcontroller, low cost enough to leave in all of your projects! The RFduino has Bluetooth 4.0 Low Energy built-in, which enables it to wirelessly talk to any smartphone that has Bluetooth 4.0. Currently we have several open source apps built for the iPhone which were used in our demos. The RFduino has a Nordic 32 bit ARM Cortex-M0 processor, so it has more power then the UNO, however it still runs the same, simple Arduino code the UNO runs, so there is no need to learn any new programming language or environment. The RFduino GPIO lines all support, Digital IO, Analog ADC, SPI, I2C, UART and PWM. The RFduino is similar to the Arduino UNO or DUE, except the RFduino is a fraction of the cost and size, in addition has wireless smartphone connectivity built-in! Up to now, adding wireless to an Arduino required an additional wireless shield which adds cost and size. It can be used with or without Bluetooth 4.0. - Armen

With Raspberry Pi and Cotton Candy, Linux Launches a Revolution All the world may be agog over Microsoft's Windows 8 previews this week, but at the same time a quiet revolution is taking place. It's powered by Linux, it costs a fraction of Windows' price, and its first tangible evidence is now available in not just one but two “sweet” forms: Raspberry Pi and Cotton Candy. Like the idea of freedom from the upgrade treadmill and a price that won't put you behind on your rent? Then you may want to check out this new category of computing devices. The Raspberry Pi There's been talk about the ARM-based, education-focused $25 Raspberry Pi for quite some time already, but this week the diminutive device made its official debut. That's been nothing if not exciting to watch, particularly because the launch was so successful that it brought the UK-based project's site to its knees amid overwhelming demand. Premier Farnell and RS Components have both signed up as licensed manufacturers of the devices, the first run of which apparently sold out within an hour or so.

smARtDUINO: Open System by former ARDUINO's manufacturer by Dimitri Albino Check the details in our update (click here). All the details are available in the public update (click here). You can read all the details in our update (click here). All the details are reported in our update (click here). smARtDUINO is the newest and easiest tool to create electronic projects. smARtDUINO is the most advanced platform for the creation of electronic projects and even products. It is the only platform that is not based on a single processor, architecture or language but, in-fact, leverages a "universal" or common platform that can be used to connect components originally developed from different companies, technologies and form factors. smARtDUINO allows you to integrate modules, accessories or shields from various other platforms such as Arduino™, Netduino™, ChipKit™ and even interact with smartphone using an ADK module. There are virtually no limits in the number of different components that can be integrated in a system, with smARtDUINO. Above you see 3 common components.

Configurer la Raspberry sans écran François, Si vous avez accès à votre routeur, vous pouvez utiliser votre routeur pour trouver l'adresse IP de votre RPi, qui devrait être acquis via DHCP. Vous pouvez ensuite SSH à l'aide d'un programme appelé PuTTY. Cela vous permet d'obtenir une fenêtre de console et vous pouvez commencer à configurer le serveur VNC pour exécuter au démarrage. Ensuite, vous pouvez utiliser VNC pour accéder à l'interface graphique de votre RPi. Quant à la carte mémoire, ne vous inquiétez pas à propos de ce que vous voyez dans Windows. Amusez-vous! PS: j'ai utilisé Google Translate pour prendre votre message du français à l'anglais, puis d'écrire cette réponse. There are 10 types of people in this world.

Spark Linux Tablet Up for Pre-Order, Dev Discusses Economics of Project The upstart Spark Linux tablet is up for pre-order at makeplaylive.com for a target price tag of 200 euros (about $263 USD). You can indicate how many tablets you’re interested in, and your priority number will ensure you’re among the first to receive yours. The Spark folks are hoping to get a strong sense of device demand before the tablet launches. Developer Aaron Seigo also posted a new blog today discussing the financial aspect of the project. Overall, the idea is to put money that comes in back into the project and to Free Software (especially those around open devices) in general. “Where these funds will be targeted will depend on what needs doing, what needs supporting the most and how successful the products are in the market,” said Siego in the post. Seigo notes that part of that will be investing in partnerships with other people and companies that can create software and technologies that enhance Spark.

raspberry-pi:preparer-carte-sd Commencez par télécharger l'image de Rasbian à partir du site officiel de Raspberry, nous allons prendre la dernière version en date à savoir celle du 2012-07-15. Décompressez ensuite votre archive, vous allez obtenir le fichier : 2012-07-15-wheezy-raspbian.img Conntectez votre carte SD dans un lecteur de carte approprié puis allez dans le poste de travail pour récupérer la lettre du lecteur. Dans mon cas j'ai bien une carte SD d'approximativement 8 Go de connecté à la lettre J: Téléchargez l'utilitaire : Win32DiskImager et décompressez l'archive. Faites un clique droit sur l'icone Win32DiskImager.exe et choisissez : Exécuter en tant qu'administrateur Parcourrez votre ordinateur jusqu'à l'emplacement du fichier : 2012-07-15-wheezy-raspbian.img puis cliquez sur enregistrer . Verifiez que dans Device la lettre du lecteur trouvé dans le poste de travail ( J: pour l'exemple) puis cliquez sur : Write Cliquez sur ensuite sur Yes et patientez le temps de l'écriture sur votre carte SD. df -h /! Linux :

Raspberry Pi : le micro-PC à 25 euros fait un carton 01net le 29/02/12 à 12h41 Il est en vente ! Le Raspberry Pi, ce PC britannique de la taille d’une carte de crédit, commercialisé à un prix défiant toute concurrence (environ 25 euros !) Inutile de se presser désormais : l’ordinateur est déjà sold out sur les deux sites, et l’un d’entre eux est encore très difficile d’accès à l’heure où nous écrivons ces lignes. Afin de limiter au minimum le coût du PC, les composants ont été sélectionnés avec soin. A noter que le GPU du Pi est suffisamment puissant pour décoder la vidéo HD. RPi Easy SD Card Setup Back to the Hub Getting Started: Buying Guide - for advice on buying the Raspberry Pi. SD Card Setup - for information on how to prepare the SD Card used to boot your Raspberry Pi. Basic Setup - for help with buying / selecting other hardware and setting it up. Beginners Guide - you are up and running, now what can you do? Advanced Setup - for more extensive information on setting up. Trouble Shooting - some things to check if things don't work as expected. The Raspberry Pi will not start without a properly formatted SD Card, containing the bootloader and a suitable operating system. You will also need to choose a distribution. Some Raspberry Pi kits will come with a ready-to-go card with the distribution pre-installed, or these can be bought separately. If you don't have a pre-installed card you will need to prepare your own. Buying a preloaded SD card from a reputable supplier means that you can just plug it in and power up your Raspberry Pi; it should then just work. Using NOOBS Using Etcher

Introducing the mintBox In association with CompuLab, Linux Mint is proud to present the mintBox. The pro model is recognizable by its ribbed case (its faster performance requires more heat dissipation) We’re passionate about what we do and for our very first Mint device, we wanted something unique, something special and extraordinary. The mintBox is Mint in a box. It’s tiny, it’s silent, it’s extremely versatile and it comes packed with connectivity. The mintBox is the very first branded Mint device About CompuLab CompuLab has been making embedded computer-on-modules for over 15 years. We work with CompuLab on the fit-PC3 to make sure the software tightly fits the hardware and to provide a high level of integration. The Fit-PC3 Basic and the mintBox Pro The mintBox is a CompuLab fit-PC3 unit, with a green retro-lit Linux Mint logo, and 10% of each sale goes towards Linux Mint. About the mintBox The mintBox is amongst the toughest computers on the market. The mintBox features a die-cast solid-metal case Availability

Raspberry Pi, Python & Arduino After the other night’s wonderfully slow detour into Processing, I thought I’d try the Raspberry Pi’s “native” language of Python to control an Arduino. This worked rather well, though I don’t have a slick GUI for it yet. pyFirmata is the magic that allows an Arduino running Firmata to talk to Python. It’s fairly easy to install under Raspbian: Get the required packages:sudo apt-get install python-serial mercurialDownload the pyFirmata code:hg clone cd pyfirmata sudo python setup.py install (If this succeeds, you can delete the pyfirmata folder.) Using pyFirmata is a bit different from other Arduino applications: Here’s some code that uses the same hardware as before, but simply reports the temperature and ramps the brightness of the LED up in 10% steps. The output from this might look like: If this doesn’t work, check the output of dmesg to see if you’re using the right port. which should generate something like Send the author to the moon!

Raspberry Pi Supercomputer Guide Steps Return to View video at: Prof Simon Cox Computational Engineering and Design Research Group Faculty of Engineering and the Environment University of Southampton, SO17 1BJ, UK. V0.2: 8th September 2012 V0.3: 30th November 2012 [Updated with less direct linking to MPICH2 downloads] V0.4: 9th January 2013 [Updated step 33] First steps to get machine up 1. I originally used: 2012-08-16-wheezy-raspbian.zip Updated 30/11/12: 2012-10-28-wheezy-raspbian.zip My advice is to to check the downloads page on raspberrypi.org and use the latest version. 2. You will use the “Write” option to put the image from the disk to your card 3. 4. $ sudo raspi-config 5. $ passwd 6. $ exit 7. 8. $ sudo apt-get update 9.

Les commandes fondamentales de Linux - Linux France Premier auteur (jusqu'à 1998): Armand Delcros Wikisé et étendu par (depuis 2009): Nat Makarevitch Contributions et remerciements Nat Makarevitch pour ses nombreuses critiques et corrections, Thomas Ortega pour ses bienveillantes remarques et la remise en forme HTML du document, Kim Ashue pour sa relecture, Philibert de Mercey pour son aide à la mise en page, Fanthomas pour sa relecture. L'objectif de ce document est d'enseigner les commandes fondamentales de Linux (et donc d'Unix). Objectifs Nous explorerons ce qu'offre le shell nommé « bash », le plus utilisé sous Linux, donc une partie de ce que peut faire un utilisateur capable de diriger la machine en créant des lignes de commandes plutôt qu'en se contentant d'un cliquodrôme. Manœuvres préliminaires Pour apprendre il faut pratiquer, donc disposer d'une machine fonctionnant sous Linux qui n'est pas sérieusement exploitée. Si vous en avez déjà une négligez la présente section (passez à la suivante). Émulateur Services Linux de Windows 10 Live x

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