Welcome to Issue 3 of The MagPi, a community led magazine keeping you up to date with all things Raspberry Pi.
This month has seen the team working hard searching and testing 9000 stable Debian packages, and identifying over 150 games and 43 apps to try out on your Pi.
Meltwater introduces his article “Meeting Pi”, offering ideas and tips on introducing the Raspberry Pi to users of very young ages. We feature an article on low level programming using C and Alex Kerr has produced his article “Programming fundamentals” describing how to use variables, “If” statements and loops.
Bodge N Hackitt continues his series, explaining how to program the USB robotic arm using Python. Darren teaches us more on interfacing with the Pi, plus more from the reader’s favourites – Command line, Scratch Patch and the Python Pit.
An email that caught my eye this month
was from Cayton-John, aged 7, reading up
on the first edition of the MagPi.
Could this be our youngest reader?
If you have photos reading our magazine,
please send them to firstname.lastname@example.org.
On behalf of The MagPi team we want to thank Will Bengtson and his team at QRt for giving us our beautiful, personal The MagPi QR code. Please check out their site at QRt.co and see their clever generator and other attractive work.
Finally, keep your questions for Liz and Eben coming in and look for our official interview in next month’s magazine.
We hope you continue to enjoy reading The MagPi and that it
inspires you to get programming.
Chief Editor of The MagPi
This issue is supported by:
If you are tired of logging in to your Debian SD card with username: pi, password: raspberry and then typing startx, you can get your Raspberry Pi to boot straight to the graphical interface without having to type anything… After … Continued3
These procedures were tested with debian6-19-04-2012.img. Get the latest from raspberrypi.org/downloads (You will need to have your Pi connected to the internet.) Removing the black border from around the screen This step is only required if you are finding a … Continued4
In the first part of this series we looked at using the Raspberry Pi GPIO port as an input to monitor the status of a switch. In this part we learn about outputs. We use the term INPUT to refer … Continued7
In this issue, we will explain why Linux commands behave the way they do. We will also explore how to join commands together as building blocks to do some useful things.10
Installing Python PyUSB libraries To be able to control your USB device you will need the Python PyUSB libraries. The PyUSB libraries have been written in collaboration with a team of ‘open-source’ volunteers. To download them, open the Midori web … Continued14
This article will describe a cheap way to protect your GPIO connector from accidental shorts and physical damage, and at the same time provide a GPIO socket which can be easily connected, at almost no cost.16
At age 5 to 6 I was fortunate to have access to a ZXSpectrum 48+…a passion for electronics and resulting career was the end result. Many years later, the Raspberry Pi is waiting to inspire the next generation of engineers.20
C is an excellent language for building fast and very efficient programs. It can be found in applications where speed and memory footprint matter, such as the Linux kernel and data acquisition systems.22
In this article, I’m going to show you a few programs to try in Scratch. Have a play around with them until you are familiar with how to use variables, conditionals and loops. With these basic programming tools, there’s a huge amount you can do!24
This month we will look at overlaying more surfaces on top of the screen surface. You can think of each surface as being a separate window within the main screen surface. Don’t worry if this sounds complicated, the following examples should help to demonstrate the principle.26
Although there are many programming languages, a lot of it is just different ways to do the same thing; much like spoken languages all have different ways of saying “Hello, how are you?”. They all mean the same thing once translated, but they’re said differently. This section aims to explain some of the basic fundamentals of programming that are useful to know for every language.29