Indholdsfortegnelse for #115 i Raspberry Pi Official Magazine

Every March we run our yearly #MonthOfMaking special (page 66). This is where we all get together and finally build that project we’ve been dreaming of. Get involved and you can join hundreds of other makers to share and inspire, and get a little advice along the way. Raspberry Pi is where electronics and code smash together to produce (hopefully) something rather wonderful. The metal pins on Raspberry Pi (known as ‘GPIO’) are used to wire up your little computer to lights, buttons, speakers, and even larger appliances around the home. Code is the language you use to control a computer. Code is cool, but electronics is even cooler. It’s one step beyond. You use code to control a computer to build and control real-world electronic appliances. Getting started is…

To build your own Sol-20 you’ll need a Raspberry Pi 4, a 3D-printed or self-drafted computer case, an 8in 1024 × 768 × GA screen, 3.3 V to 5 V bi-directional voltage level adapter, USB to serial, and TTL adapters and, ideally, a keytronic keyboard.…

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Electronic circuits are daunting for complete beginners. Fortunately, help is widely available, and it soon becomes a lot simpler than you imagine. Once you have the breadboard and components, you should start wiring them up by following a simple tutorial (like the one at the end of this feature). There’s absolutely no shortage of electronic projects out there, and most of them guide you through attaching components to your breadboard, then using software such as the GPIO Zero Python library (magpi.cc/gpiozero). There are a range of easy-to-follow electronics tutorials on the Raspberry Pi Foundation’s website (magpi.cc/electroniccomponents). Most tutorials include a wiring diagram. See the wiring diagram below. This provides a visual guide to how circuit is built. You’ll find wiring diagrams like this throughout The MagPi, and similar ones used…

WRITER Simon Monk Simon divides his time between writing and designing products for MonkMakes Ltd. His books include Programming Raspberry Pi (TAB) and The Raspberry Pi Cookbook (O’Reilly). He has sold over 700,000 books in ten different languages. @simonmonk2 one of the great things about Raspberry Pi, is the inclusion of the double row of pins called the GPIO connector. This enables you to connect external electronics to your Raspberry Pi and use code to control things like LEDs and buzzers, as well as reading values from sensors or detecting when switches are pressed. In this tutorial, you will use the popular MonkMakes Project Box 1 for Raspberry Pi (monkmakes.com) to get started with electronics. This kit contains the LED, jumper leads, breadboard, and buttons we will use to explore…

Wireframe This tutorial first appeared in Wireframe, our sister magazine that lifts the lid on the world of video games. Every issue includes tutorials and in‑depth interviews, along with news and reviews of the latest indie and triple-A games. To find out more, visit their website at wfmag.cc. Check out their subscription offers at wfmag.cc/subscribe. The likes of Nintendo and Sega may have got our nostalgia synapses humming with their miniature plugand-play consoles, but how about an entire RetroPie device that fits snugly into a SNES-style controller? Follow the instructions here, and you’ll have a complete, selfcontained system capable of playing a wealth of retro games. It’ll connect to your TV via HDMI, will charge using a micro USB port, and can be made for a relatively paltry sum. A…

Raspberry Pi 4 vs Pico CPU: Quad-core Cortex-A72 (ARM v8) 64-bit SoC @1.5GHz RAM: 1/2/4/8 GB Connectivity: 2 × USB 3.0 ports, 2 × USB 2.0 ports, 40-pin GPIO, wireless LAN, Bluetooth 5.0, Gigabit Ethernet, 2 × micro-HDMI ports, CSI camera port, DSI display port, 3.5mm audio and composite video jack Storage: MicroSD card, minimum 4GB Operating system: Yes Analogue support on GPIO: No CPU: Dual-core ARM Cortex-M0+ processor @133 MHz RAM: 264kB SRAM Connectivity: 26-pin GPIO with 3 × analogue inputs, 2 × UART, 2 × SPI controllers, 2 × I2C controllers, 16 × PWM channels, 8 × Programmable I/O (PIO), micro‑USB port (power and data) Storage: 2MB flash Operating system: No Analogue support on GPIO: Yes Connecting Pico to Raspberry Pi Pico is great at a wide variety…

▶ Argon40▶ argon40.com ▶ From £95 /$128 Sleek lines, tailored styling, and impressive build quality hallmarked the original Argon40 case. Now Argon is back with a follow-up, the EON. Having raised over £100,000 on Kickstarter, the project is nearly ready to ship, and we’ve been lucky enough to road-test a prototype for a couple of months. The EON is a full network-attached storage (NAS) enclosure for your Raspberry Pi 4. Whereas previous NAS projects often involve a USB hub and cables to external drives, the EON fits up to four drives in an enclosure with a single power source. This allows you to build your own multi-drive storage solution for a fraction of the price of a PCbased equivalent. The first thing that strikes you about the EON is the…

A VISUAL INTRODUCTION TO ALGORITHMS Packed with diagrams and illustrations, Educative’s course takes around 14 hours to complete. Topics covered include binary search, asymptotic analysis, recursion, and a variety of sorting methods. magpi.cc/visualalgo INTRODUCTION TO ALGORITHMS AND DATA STRUCTURES IN C++ This Udemy video-based course is aimed at C++ programmers. Using plenty of diagrams, Andrei Margeloiu takes you through fundamental data structures and explains practical techniques to solve algorithmic problems. magpi.cc/udemyalgoc DATA STRUCTURE – PART I This is one of the best courses aimed at complete beginners in the field. Using Java code examples, it explores dynamic arrays, linked lists, stacks, queues, and tree and time complexity analysis. magpi.cc/udemydata…

PYTHON ALGORITHMS By Beginning Python author Magnus Lie Hetland, this 352-page book gives a good overview of implementing algorithms in Python. It explores various types and each chapter ends with problems to solve. magpi.cc/pythonalgo ALGORITHM DESIGN MANUAL This 748-page tome is a comprehensive reference guide to computer algorithms. The first part covers methods for designing and analysing them, while the second is a catalogue of algorithmic resources and implementations. magpi.cc/algodesign INTRODUCTION TO ALGORITHMS MIT Press’s classic guide is considered the ‘bible’ of algorithms. At over 1000 pages, it isn’t the lightest read, but is ideal for those who want a comprehensive reference book to dip into during a course. magpi.cc/introalgo…

Carberry Pi I am a research master in computer engineering. My project is to design a vehicle tracking system. I want to get the vehicle speed through the OBD2 device. I want to connect the OBD2 with Raspberry Pi and read the vehicle’s engine information on a Raspberry Pi display. If you can help me I will be grateful and, if you can’t, please point me to someone who can help me. Saba via Facebook Way back in issue 81(magpi.cc/81), we did a feature on how to build your own car computer which connected to OBD2 stuff in a very similar way. There are several good ones you can find online too – we like this one from Instructables: magpi.cc/obdpi. Be careful when doing such modifications to a vehicle though,…

ith any luck, you’ve managed to get a wonderful Raspberry Pi computer. So, the question now is what to make with it? Raspberry Pi isn’t like other computers. In the computers of yore, all the components were highly visible and this made computing easier to understand. Modern devices are made from glass and glue with all the interesting innards kept away from prying hands behind security screws and ‘warranty void’ warnings. Good for keeping little hands out; lousy for learning. On every Raspberry Pi sit GPIO (general purpose input/output) connections. These pins enable Raspberry Pi to connect physically with electronics. Here is the real joy of Raspberry Pi. There are thousands of components you can use with your computer, from buttons and buzzers to small screens and sensors. You can…

JAM HAT Designed to make starter electronics easier in the classroom, JAM HAT is packed with LEDs, buttons, and a buzzer. These components can be used with a range of beginner projects, like building a traffic light system with a button crossing. Students can focus on the code without spending the whole class wiring up the components. Of course, that’s half the fun for us! magpi.cc/jamhat SENSEHAT Designed for Raspberry Pi’s space program, Astro Pi, Sense HAT allows been on-board the ISS since 2017. And, every year, students around the world use them to perform experiments in space. Down to earth, the Sense HAT has orientation, pressure, humidity, and temperature sensors, along with an LED Matrix and joystick control. Best of all, it is backed by hundreds of documented experiments…

MAKER James Robinson Senior Learning Manager, Pedagogy and Training at Raspberry Pi. Ex-Teacher, spaceenthusiast.O  raspberrypi.org MAKER Mark Scott Marc is a former computer science teacher, and manages informal learning content for the Raspberry Pi Foundation. raspberrypi.org Over the course of this tutorial, you will construct a robot face from a combination of LEGO and electronic components. You’ll then use an existing machine learning model to help your face recognise different objects and react to them. You should build your robot face using whatever LEGO and other materials that you have available. We have used the LEGO SPIKE™ Prime kit (magpi.cc/spikeprime). This tutorial can also found online on the Raspberry Pi Foundation’s website (magpi.cc/legorobotface). 01 Get started Before you begin, you will need to have set up your Raspberry Pi computer…

During the month, we want you to start that project you’ve been putting off. With the help of the community, we can get these all built and have something amazing to show for it! You can build whatever you want, but in this feature we’d like to highlight new and different ways to make. This year, we want to highlight Raspberry Pi Pico, which has only been out for around a year but has made a huge splash on makerspaces. With Raspberry Pi’s own microcontroller, you can do a lot of stuff that Raspberry Pi can and cannot do, but with an even tinier footprint. Grab your Pico, and let’s get making!…

Created by Kevin Wayne and Robert Sedgewick from Princeton University, this two-part, intermediate-level survey course is available for free on Coursera. Covering essential information on algorithms and data structures for programmers, it has an emphasis on applications and scientific performance analysis of Java implementations. Part I covers elementary data structures, sorting, and searching algorithms, while part II focuses on graph- and stringprocessing algorithms. Starting off with the union− find data type and analysis of algorithm performance, Part I explores elementary sorting, the merge-sort algorithm, priority queues, balanced search trees, and hash tables. Part II tackles undirected and directed graphs, shortest paths, substring search, and regular expressions. Modules comprise videos, written materials, and quizzes to test your newfound knowledge. CREATOR Coursera Price: Free magpi.cc/algocoursera…

> Name Liz Upton > Occupation Chief Marketing and Communications Officer > Community role Community leader > Twitter @Raspberry_Pi If you’ve read a blog on a Raspberry Pi website, chances are it was written by Liz. If you’ve replied to a Twitter post from @Raspberry_ Pi, chances are that Liz wrote it. For several years, at the start of Raspberry Pi as a computer and charitable Foundation, Liz Upton was the entirety of the team relaying official Raspberry Pi news. While she doesn’t have to do everything any more, her influence is still there, despite that never really being the plan. “I was a freelance copywriter and editor, working on food, travel, and fragrance beats; it was a lovely job,” Liz explains. “I got to review the maiden voyages of…

Sharing the small projects he makes, often with an Internet of Things slant, is Wolfgang Strenzl’s way of connecting with other makers and sharing his knowledge. He particularly enjoys combining hardware and software “to build little tools”, noting that “many of his projects make use of software done by the open-source community.” His Raspberry Pi Pico arbitrary waveform generator came about when he needed a tool to create a signal as an input while repairing some equipment. Wolfgang had made a hardware-based arbitrary waveform generator before, but having researched the capabilities of the RP2040 microcontroller and its support for DMA and PIO, he realised Raspberry Pi Pico would be ideal for amplifying waveform signals. MicroPython, which Pico natively supports, also happens to be Wolfgang’s preferred programming language. He decided to add…

BREADBOARD Experienced makers can get away with soldering components together with wires, but it’s a faff and it’s much faster to prototype circuits using a handy piece of plastic called a ‘breadboard’. Unlike its food namesake, an electronics breadboard is a plastic slab with a bunch of holes in it. At first glance, it looks pretty unfathomable, but it soon becomes easy to understand. See our How To Use a Breadboard tutorial (magpi.cc/breadboard). In case you’re wondering about the name, the first breadboards were wooden boards with rows of nails instead of holes. JUMPERS Jumper wires, also known as ‘jumper leads’ or ‘jumper cables’, connect components to each other, and Raspberry Pi’s GPIO pins to the breadboard. Different types are used to connect to holes and pins. Male-to-femaleM2F which…

RASPBERRY PI 4 ULTIMATE KIT If you are starting from scratch, and want everything you need to be delivered in one place, then CanaKit’s Ultimate Kit (£95/$129) is a great option. Inside the box are a Raspberry Pi 4 Model B, power supply, case, microSD card, cables, and a breadboard with electronics parts. magpi.cc/canakitultimate MONK MAKES Simon Monk has been putting together starter kits and tutorial guides since 2013, and his Raspberry Pi collection is one of the finest. You’ll find a tutorial by Simon overleaf based upon his Project Box for Raspberry Pi (£12/$9). Inside you’ll find a breadboard, jumper wires, LEDs, resistors, push-buttons, buzzer, and both a thermistor and phototransistor. There’s also a booklet with ten products. We also like his ‘Leaf’, a plastic guide to GPIO pins…

MAKER Rob Zwetsloot Rob puts on yearly quiz panel comedy shows at anime conventions for some reason. At least, he thinks they’re funny. magpi.cc Warning! Power Tools This tutorial uses power tools and sharp hand tools, so be careful if you plan to replicate it magpi.cc/drillsafety Buzzing in is a quintessential part of many quiz experiences. Unfortunately, there is no real product you can just buy off the shelf or online that lets you have a series of connected buzzers. The best you can do is some barnyard buzzers, and a keen ear to listen out for what went first. Thanks to advancements in quiz technology/maker components though, it’s actually not too hard to make one yourself, and use minimal soldering as well. Now our first question: how quickly can…

The point of #MonthOfMaking is to share what you’re building! Here are our tips on how to post your projects online. Posting your projects Twitter Posting on Twitter is the best place to share your project. A brief description, pictures, and any relevant links if you have a blog for the build, along with the #MonthOfMaking and #MyLatestBuild. You can also tag in @TheMagPi, and we’ll make sure to share it ourselves, and maybe feature it in the magazine! Reddit There are many relevant subreddits for different project types – although the Raspberry Pi subreddit is a good place to go for any Raspberry Pi-related projects you want to post. Upload some images to Imgur when you’ve finished your project, mark your post as ‘Show and Tell’, and it’s ready…

Grokking Algorithms The concept of algorithms predates computers by several centuries. First postulated by 9th century Persian mathematician Muhammed al-Khwaārizmiī, from whose name the word ‘algorithm’ is derived, they involve creating a finite sequence of well-defined steps to perform a computation or solve a problem. Algorithms can be defined in written language (e.g. a recipe), flowcharts or, of course, computer programs. Aimed at those with basic coding skills, Grokking Algorithms is an easy-to-follow illustrated guide that teaches you how to apply common algorithms to the sorts of practical problems you may face as a programmer. Starting off with the basics of binary search, recursion, and sorting, it proceeds to cover more complex topics such as data compression and AI. Along the way, it covers topics such as problem-solving techniques, hash tables,…

This March issue of The MagPi is released on 24 February 2022, a few days before whatever could be considered the official birthday of Raspberry Pi – it’s a 29 February birthday, and 2022 is not a leap year. As well as our interview with Liz, we wanted to see what the community had to say about ten years of Raspberry Pi. We had a huge response – here’s some of our favourites! Thank you to everyone in the community that supports Raspberry Pi and The MagPi! Here’s to another ten years…

I was chatting in the pub - remember those? - the other day to a friend who has started work in a new coding job. Like many people I know, they picked up programming and, after a few courses, quickly found work in the area. Coding certainly beats digging a ditch. I can’t recommend highly enough learning to code or going on a boot camp. The aforementioned friend started with a smattering of Python and, after some teaching work, now works for a prestigious, but somewhat contentious, institute that I shall not name here. They do incredible data science and will probably cure cancer. Fortunately, in this instance, they did not have to fend off too many questions. I doubt if they have the ‘Mulder and Scully’ level of clearance…