Indholdsfortegnelse for #134 i Raspberry Pi Official Magazine

There's only one thing everybody is talking about this month – the announcement of Raspberry Pi 5. Raspberry Pi's upcoming small-factor computer is a giant leap forward in speed and features. Managing to fit so many new components onto the same-sized board is an incredible feat of engineering. Raspberry Pi 5 is up to three times as fast as the – already speedy – Raspberry Pi 4 it replaces; Raspberry Pi 5 is a full desktop-class computer. It has dual-camera and display support; Raspberry Pi connector for PCIe with an M.2 drive HAT on the way. It even features a power button (hurrah!) and a real-time clock. And it still has the GPIO pins for homemade hacking and making. It's perfect! There's a lot packed in Raspberry Pi 5, so…

Ryder is a creative technologist who likes to use technology to bring strange ideas to life. With a biomedical engineering/ science/aviation background, he hangs around at the intersection of technology and art. magpi.cc/ryderyt MAKER Warning! Legal & Car Safety Recreating this project in the UK is inadvisable. Attaching a car accessory may invalidate your insurance, and spraying water onto the road may be considered a hazard. magpi.cc/drivesafely Walking through his hometown one day, observing some people painting lines on the road with a spray machine, Ryder Damen had a brain wave. “I wondered how they did different types of text and from there thought of the idea that, with a bunch of nozzles, I could pretty much spray anything I want,” he explains. What if, say, he used water, to…

By day, Evan Holbert is a SCADA and automation engineer working in power systems. He's a maker and Game Boy modder in his free time. magpi.cc/theoracle MAKER We often wish we could foresee the future – that way, we could get very excited learning about all of the many amazing Raspberry Pi goodies that are sure to await us over the next decade! At the very least, we'd be able to pre-empt the disappointment over our favourite sports team's defeats each weekend. If only there was a way… Step forward Evan Holbert and his amazing (forward) looking project: The Oracle. It reminds us in some way of Zoltar from the classic Tom Hanks movie Big, since it allows you to insert a coin, enter your birthday, and read your fortune.…

MAKER Also known as Penguin Tutor. Maker and YouTuber that loves all things Raspberry Pi and Pico. Author of Learn Electronics with Raspberry Pi. penguintutor.com twitter.com/stewartwatkiss You'll Need > L298N magpi.cc/l298n > Train set or 12V DC motor magpi.cc/piborgmotor > 12V power supply magpi.cc/12v2a > Jack to screw terminal magpi.cc/fdcpa DC motors are an important part of many electronic projects. This tutorial explains how they are used in a model railway with H-bridge drivers and pulse-width modulation (PWM). This will then help you understand how to use motors in other projects as well. The example uses the L298N H-bridge driver which is commonly available on a small printed circuit board (PCB). You'll also learn how you can create a web-based interface so that you can control the railway via a…

@robmiles Rob Miles has been playing with hardware and software since almost before there was hardware and software. You can find out more about his so-called life at robmiles.com. Achord keyboard is a great way to enter text on the move. You can type in text without having to look at your fingers. This project builds on the chord keyboard described in Issue 46 of HackSpace magazine, adding Bluetooth connectivity, using a custom PCB, and making it easy to create a keyboard that matches your hand dimensions. THE PICO ‘BLUE CHORDS’ KEYBOARD Figure 1 shows left- and right-handed versions of the keyboard. They can be used to enter text, numbers, and symbols. The OLED screen displays the keyboard mode and the last few characters that were entered, along with the…

Amazing projects direct from social media! Every Monday we ask the question: have you made something with a Raspberry Pi over the weekend? Every Monday, our followers send us amazing photos and videos of the things they have made. Here's a selection of some of the awesome things we got sent this month – and remember to follow along at the hashtag #MagPiMonday!…

THE FINAL WORD Working at a very cool technology company is fantastic – until you have to keep your excitement for a new product a secret from everyone who you know would love to hear about it. It's a big weight off my shoulders that I can now freely talk about Raspberry Pi 5 (well, not as I write this, after the issue is out) and why y'all should be excited about it too. I'm looking at mine on my desk right now and honestly, it's just very nice and shiny. The smooth routed PCB, the clean circuit lines running along the board, and the low-profile of the soldered parts. You hear about the story of Steve Jobs asking for the Apple II chips to be laid out in an…

Raspberry Pi Case Alongside Raspberry Pi 5 comes a new case with powerful new features. It retains the white and red modular scheme of the original case, and now contains four separate compartments. There is the red base, which Raspberry Pi 5 sits on, with a white frame in the middle. New to this case is a clear shelf with a fan on board (that connects to the fan socket next to the Ethernet port). This shelf has a cutout section enabling access to the GPIO pins, and a final lid, with airflow spacing, covers everything into a neat package. Inside the box you will also find a heatsink to attach to Raspberry Pi 5's main processor and four stickon rubber feet. Active Cooler An alternative cooling solution is also…

BIO HEAD OF DOCUMENTATION Alasdair is a longtime tech writer and enthusiast, and appreciates it when people compliment the Raspberry Pi documentation. Task lead vs features lead Two of the main ways the docs are split up is based on whether they need to be task lead or featured lead. Feature lead tends to involve the lowerlevel functions – giving information on how, e.g., SPI or i2c work and how you can access them. Task lead tends to be a bit meatier, giving you all the information you need from the lower levels up to create, say, a web server that displays sensor readings. When Raspberry Pi Pico was released, people were quick to praise the in-depth official documentation found at magpi.cc/docs. Writing the docs is a collaborative effort with…

MAKER Olivier is a data scientist from Montreal, Quebec, passionate about AI strategies applied to language. He entered the field after a stint in the arts sector and a degree in classical music. magpi.cc/dispatchpi When Olivier Simard-Hanley was faced with spending many months apart from his fiancée, he needed to find a simple way of keeping in touch. Trouble is, the task was always going to be trickier than it sounds because his fiancée was moving to a remote Inuit community in northern Quebec to work as a nurse for a year while Olivier was finishing his master's in technology in Montreal. “Puvirnituq, in the Nunavik region, has poor internet connectivity and no cellphone coverage,” Oliver explains. “I also anticipated that aligning our schedules would be challenging due to the…

David is an engineer at Raspberry Pi with a special interest in camera software and algorithms, and image processing hardware, raspberrypi.com Cameras deliver sequences of images and we can control certain aspects of how they are delivered, like the exposure time or frame rate. However, the limits of these parameters are all governed by the mode in which the camera is operating. For example, the current camera mode may have a maximum frame rate that it will allow, and therefore any attempt to ask for a higher frame rate will fail unless a new camera mode is selected beforehand. Selecting a new camera mode is a relatively expensive operation. It requires reprogramming much of the sensor's internal configuration. Therefore, it cannot happen while the camera is running and delivering images.…

Welcome, my menagerie of MagPi makers, to this year's haunting and horrifying Halloween dispatch. While, in the past, we've provided you with wicked ways that were dead certain to terrify incognito infants and adorned adolescents, we thought they deserved a trickle of treats this year to satisfy their monstrous appetite. We think you'll be dead pleased with our spooky selection of petrifying projects, sickly sweets, and abysmal alliterations. Now, look alive – time is ticking and you want to be prepared for your ghoulish guests, right? ANCIENT ARTEFACTS Get more icky ideas for your Halloween spookfests with these features of future past SMART AND SPOOKY HALLOWEEN PARTY! Put on your own monster mash with these terrifying tips and tricks for a most spinechilling shindig. magpi.cc/121 SPOOK UP YOUR RASPBERRY PI…

LEARN ROBOTICS PROGRAMMING, 2ND EDITION Over 600 pages, Danny Staple demonstrates in detail how to use a Raspberry Pi and Python to program a two-wheeled robot and add a wide range of features to it. magpi.cc/robotprog2 LEARN ROBOTICS WITH RASPBERRY PI Author Matt Timmons-Brown shows you how to build and program a basic robot and customise it with lights, sound, sensors, and a camera. A great beginner's guide. nostarch.com/raspirobots ROBOTICS AT HOME WITH RASPBERRY PI PICO Danny Staple explores the possibilities of robotics using Raspberry Pi Pico, programming it with MicroPython, and adding features such as object and orientation detection. magpi.cc/robothomepico…

A regular on our events pages, the Melbourne Raspberry Pi Makers Meetup is a monthly gathering of makers. Jam holders get free swag and the organiser Trevor Warren (who we interviewed in issue 128: magpi.cc/128) gives it out to folks who do a show and tell of their projects. FIND OUT ABOUT NEXT MONTH'S EVENTS AND POP-UP ON PAGE 92…

Python book reprints I have a question: will the book Create Graphical User Interfaces with Python be available in the future in print? I have noticed it is currently sold out. Bernd via email It will get a reprint in the future, however, we don't have a timeline to give you for that right now. For the moment, you're more than welcome to print off your own copy using the free PDF available at: magpi.cc/books. Next Raspberry Pi When will Raspberry Pi 5 be out? I had assumed the chip shortages were to blame for no new Raspberry Pi, but it's been a while since they were sorted. Can we get any idea of when? Ari via Facebook As you may have seen, if you didn't skip ahead in this…

BIO CTO (HARDWARE) James has been at Raspberry Pi for over ten years. You'll find his signature on a Raspberry Pi 5 under the USB ports. What is a southbridge? The southbridge in a traditional legacy PC is the chip that handles most of the medium-speed input/output (I/O) functions, such as USB, storage, networking, etc. In comparison, the northbridge provides the highest-speed interfaces: to SDRAM and PCI Express. It's been over four years since Raspberry Pi 4 was released, but parts of Raspberry Pi 5 have been in development for far longer. We sat down with James Adams, CTO (Hardware) at Raspberry Pi, to talk about the new technologies on the board and what they bring to Raspberry Pi. RP1 – an in-house southbridge Raspberry Pi 5 is coming out…

Bristol Braille MD Ed Rogers has used Raspberry Pi professionally and for his own interest since it first launched, and loves the community and support it provides. bristolbraille.org MAKER Screen fatigue is all too real for millions of smartphone and laptop info-seekers, but the details we get to read oh-so-casually are something most of us take for granted. Not so for blind and partially sighted readers. Text-tospeech engines do a great job of narrating on-screen information, but it's no substitute for being able to read what you wish to at your own pace. Community interest organisation Bristol Braille set about changing this with its Canute 360 multi-line reader which has a Raspberry Pi at its heart. This Raspberry Pi Zero-based device is the world's first multi-line Braille reader and is…

MAKER Software engineer Naomi has an MSc in Computer Science and is an enthusiast for Python and MongoDB. magpi.cc/guardiangit When it comes to life goals, Oxford master's graduate Naomi Pentrel is doing pretty well. Along with an impressive roster of academic achievements and professional roles as a software engineer at the likes of Google, Microsoft, and Bloomberg, she is a regular public speaker, enthusing about MongoDB and other database possibilities. The savvy coder has a very important housemate to keep her in check: the toy poodle, Ernie, who she and her partner took under their wing two years ago. Although the Netherlands-based couple largely work from home, when they're away they like to check in on their beloved Ernie: hence creating a Raspberry Pi 4-based Zelda Guardian so they can…

MAKER A long-time contributor to The MagPi, Phil is a freelance writer and editor with a focus on technology. @philkingeditor While a multimeter is useful for measuring aspects of electronic circuits, an oscilloscope works at a higher frequency and so can show the voltage waveforms in real-time. That's why it's such a handy tool for testing and debugging circuit designs, among many other uses over a wide range of fields. For the electronics hobbyist, commercial oscilloscopes can seem pretty pricey, so the option to make your own using just a Raspberry Pi Pico and the free Scoppy Android app is very appealing. We'll cover how to set it up and use it in a circuit experiment to measure the time for a capacitor to charge. 01 Install Scoppy app First, you…

Lucy is editor of The MagPi and has been coding since somebody pushed her nose into a BBC Micro at school. magpi.cc MAKER Variables are your friendly all-purpose Python containers. Like digital Tupperware, they are used to contain a wide range of different values. The big two are strings (words and characters) and integers (numbers). There are lots of other types of variables as well. We'll get to them in due course, but for now let's take a look at what a variable is. Open up Thonny IDE and click in the Editor (the top part of the screen) and enter the code from the foobar.py listing (overleaf). Click Save and call the program ‘foobar.py’. Now click Run. The Shell (at the bottom of the screen) will display: Let's unpick…

INTERVIEW Name Nicholas Provenzano Occupation Teacher, makerspace director Community role Educator URL TheNerdyTeacher.com We've met Nicholas before at New York Maker Faire, where he was helping out with coding demos at the Raspberry Pi Foundation's booth. It was a nice little demo with components attached to wooden boards and alligator clips to connect everything. As a teacher, one of the first North American Picademy attendees and a big US Raspberry Pi advocate, he was truly in his element. “I've been a tinkerer for as long as I can remember,” Nicholas says. “There are many things I took apart that I could never reassemble in my youth. How things work was something that always fascinated me. We did not have much when I was younger, so my parents would often make…

Other cool things we saw using Raspberry Pi this month Universal wait times We have heard whispers of Raspberry Pi being used in major theme parks, but this is our first bit of proof. Also, peep that ancient Raspbian desktop, it's been a while since we've seen it ourselves. magpi.cc/universal Unicode character display This Pico-powered device is a cool way of displaying unicode using physical switches. It then shows what that arrangement makes and how to create it on a keyboard. Very cool. magpi.cc/unicodeinput…

01. Riverside Raspberry Monday 9 October 3600 Lime Street, Riverside, CA, USA magpi.cc/riverside134 Riverside Raspberry is a California-based enthusiast group that's been meeting up for almost a decade. This group will appeal to thinkers and tinkerers, the scientifically curious, software developers looking to get into embedded development, or anyone young or old that has a knack for tech in general. 02. Cornwall Tech Jam Saturday 14 October Wadebridge PaviLLion, Egloshayle, UK magpi.cc/ctj134 Cornwall Tech Jams are run by volunteers working in IT and education throughout Cornwall. They are supported by Software Cornwall, its members, and other local businesses. Our volunteers give their own time and expertise to plan each Cornwall Tech Jam and to the regular maintenance of all our equipment. 03. Raspberry Pi Jam Mombasa Friday 20 October Tech…