PN532 Breakout Board - Cookbook PN532 Breakout Board Adafruit offers a NFC breakout board which is also packaged as a full kit including a mbed & other parts to get you started. Getting Started¶ Wiring it up¶ First of all pinheads need to be soldered on the board's main connector as well as on the two jumpers' location. The board's NFC controller (PN532) can either be configured for serial, I2C or SPI communication. Getting GPS to work on a Raspberry PI « Peter Mount's Blog One of the tasks I want to use a Raspberry PI for is to take over the duties of an existing ITX based linux box running my weather station. Now in theory that should be pretty simple as the current setup uses pywws to connect to the station and as that’s written in python it should work. Now the Raspberry PI has no onboard Real time clock – which means it needs to use an NTP server to get the time when it starts. Usually you would use the default settings and allow the PI to connect to thenet for it’s time. Now this is fine if you have a working net connection but what if you are not connected to the net? You might be in the field running the PI on batteries.
Raspberry computing in rural Cameroon Liz: I was going to post this tomorrow, but it’s so good I just couldn’t wait. We’ve just had some mail from Geert Maertens, from Anzegem in Belgium. He’s been working with a small group of volunteers to raise money to bring computing to a school in a remote area of Cameroon. I’ll quote him in full: what he’s got to tell us is fascinating, and makes us feel very, very proud. Thank you Geert, Kristel, Griet and Hans - please keep us posted! RPi raspi-config The raspi-config script helps you to configure your Pi. The raspi-config script When you start your Pi the display shows the output from each of the start-up scripts (as lots of scrolling text). If starting for the first time using a new image you are logged in as a root user, and the raspi-config menu will then appear. It can also be started at any time from the command line or from a terminal window (see below).
Tutorial – Adafruit NFC/RFID on Raspberry Pi #piday #raspberrypi @Raspberry_Pi August 3, 2012 AT 10:47 am Tutorial – Adafruit NFC/RFID on Raspberry Pi @ The Adafruit Learning System Interested in adding some NFC fun and excitement to your Raspberry Pi? You’re in luck! One of the big advantages of Linux is that it includes a large number of stacks that have been developed by the open source community, and you get to take advantage of all that hard work simply by using or installing the right library. NFC is no exception here, with libnfc having been around for a quite some time – in fact, it’s the original reason the NFC Breakout was developed! To get libnfc playing well with your Pi and your Adafruit NFC breakout you’ll need to make some minor modification to your vanilla Wheezy distribution, and one small change to the latest NFC code (1.6.0-rc1 as of this writing), but it’s pretty painless, and this tutorial will show you everything you need to do to start writing your own NFC-enabled apps on the Pi!
SimpleCV: Installing SimpleCV on the Raspberry Pi — SimpleCV 1.3 documentation Power up the raspberry pi and log in. Connect the board to ethernet. Username: pi Password: raspberry Network should be up and running with dhcp, if not you must manually configure the network settings.Run the following command to install the necessary dependancies sudo apt-get install ipython python-opencv python-scipy python-numpy python-setuptools python-pip USB RFID + Python + Pub-Sub (MQTT) Now that we've got an RFID reader and pub-sub client working separately, it's time to combine the two functions to achieve the end result. The following code does exactly that. Here's how it works: - When the script starts the 'open_reader()' function is called which opens the card reader or exits the script upon failure. - Displays card information - Connects to the MQTT server of quits upon failure. - Begins the main loop - The listen_card(card, interval) function starts a loop that checks a card is sitting on the reader.
Programming Raspberry Pi Nearly all of the fuss about the low-cost Raspberry Pi computer's hardware has died down and we finally have some details of its software that is easy enough for the rest of us to follow. So what can you do with it out of the box? Dr Eben Upton, founder of the Raspberry Pi Foundation, has just posted some easy-to-follow details of how to get started programming the Raspberry Pi. Pi in the sky I think more of you have emailed me about this than about anything else that anybody has ever done with a Raspberry Pi. What you’ve just looked at are, we think, the highest ever photographs transmitted live from an amateur device in the UK world. Dave Akerman hooked a Raspberry Pi with a webcam and GPS up to a hydrogen balloon, which got nearly 40km up (39,994m, to be precise) before bursting. This means that Dave’s is the first Raspberry Pi to visit near space (it returned unharmed, and Dave was able to recover it), and also means that Eben does not have to eat that hat he mentioned.