Innehållsförteckning för #111 från Raspberry Pi Official Magazine

The story of Raspberry Pi Zero is intertwined with The MagPi magazine. Zero was first introduced to the world in The MagPi magazine issue #40. This fantastic single-board computer is the entry point for many of our readers. We’re impossibly proud to introduce Raspberry Pi Zero 2 W. Thanks to a clever design technique, it packs a faster quad-core CPU into the same tiny footprint. You can use Zero 2 in your current project (just swap out a Zero for a Zero 2 and get an instant speed boost), and Zero 2 is compatible with the vast array of kits and current home builds. Our Zero 2 feature (page 34) brings you all the information on this exciting new computer. And every subscriber to The MagPi in print will be…

Indian computer science engineer Arijit runs a group of like-minded tech enthusiasts called Sparklers that focuses on making AI- and robotic-based projects such as a Sudoku-solving buddy. magpi.cc/spyder Those of us with an aversion to the company of spiders may find themselves a little uncomfortable at the design of the latest AI robot created by the Sparklers, a group of computer science engineers in India. Not only does the robot specialise in watching its object’s every move, but it has multiple legs and the ability to move in unexpected ways. Team leader Arijit Das explains that SPY-DER is so-named because of its ability to walk like an arachnopod – much to the consternation of some observers. The robot’s main purpose is for live video surveillance, streaming footage that can be…

Thomas Roth is an IT security researcher who lives in Germany and creates videos about hardware hacking and reverse‑engineering. magpi.cc/ picolight Atrip to a seaside arcade is rarely complete unless you’ve grabbed hold of a soft rubber mallet and exerted huge amounts of energy on a satisfying game of Whac-A-Mole. Known as Mogura Taiji in Japan, where the game originated, it relies on speedy reactions to hit as many small plastic moles as possible – and when Thomas Roth had a go, he decided he had to create a version for himself. “It was a small arcade and my friend and I had so much fun with a game like this, I just knew I wanted to have one for our parties,” he says. In his case, the ‘moles’ he…

Oasis-X co-founders Mike and Aviel met at a maker event in Pennsylvania where self-taught coder and entrepreneur Mike was showing off several Raspberry Pi projects. oasis-x.io “Plants, mushrooms, and other cultivated organisms don’t respond in linear ways,” even when provided with supposedly ‘ideal’ growing conditions, much to the frustration and disappointment of those keen to cultivate their own food, observes 25-year-old entrepreneur and technology fan Mike Lee. Such nonconformity “is a mindset that many programmers and engineers find difficult to accept,” says Mike, explaining why he and his PhD student co-founder Aviel Stein set about improving the odds of a successful harvest. Their response, Oasis-grow, is a ‘smart agriculture engine’ that runs on Raspberry Pi and collects detailed information about whatever the user cares to grow in a bid for…

Rob is amazing. He’s also the Features Editor of The MagPi, a hobbyist maker, cosplayer, comic book writer, and extremely modest. magpi.cc Streaming is fun. Whether you’re doing art, playing games, or just chatting with followers, it can be great to interact with folks while doing something else. It is also quite complex to stream. Starting with a complicated OBS setup to stream your game, and ending up with loads of extra tabs and audio mixers thrown in, there can be a lot to control and maintain while you’re live, and even more to do if you want to use silly audio effects or zooms, etc. This is where a stream deck comes in, allowing for short cuts for various functions at the press of a button. A lot of…

A software engineer at video game developer Mediatonic, Edwin Jones has been working in the games industry for around 16 years. Find out more about him here: edwinjones.me.uk How can we make our own computer with Python? Don’t computers need lots of physical things like circuit boards and electronics? Normally yes, they do, but we’re going to create something known as a ‘virtual machine’ – a computer defined completely by software, not hardware. You’ve probably used virtual machines many times without realising it. Many modern games consoles run older, classic games via virtual machines, also known as emulators. There are many kinds of emulator, but one of the most fun to start with is the CHIP-8. The CHIP-8 was never a real computer, but that’s what makes it fascinating: long…

> Name Akira Ouchi > Occupation Infrastructure engineer > Community role Maker > Website github.com/Akkiesoft “I had no electronic skills at all before I learned and started playing with Raspberry Pi.” Not the kind of thing you’d expect to hear from one of the best-known members of Japan’s wonderful maker community, Akira Ouchi, or Akkie as he’s best known. He had been doing little projects though, like sticking a pen into an old mouse to create a sort of tablet, or making use of an optical disc drive to look after his hamster. “Although the term ‘IoT’ was not common in 2009, I combined the optical drive, cardboard, and springs to create a thing that could feed the hamster or control the power switch of the air conditioner by [moving]…

Subscriber gifts I was wondering if you were still doing a Raspberry Pi Zero with your subscriptions? Do subscribers get anything else as well with their subscription? I’ve been meaning to get one for ages. Christof via Twitter As you may have noticed by now, the subscription offer has been upgraded to include a Raspberry Pi Zero 2. You can find more info about that on page 32. As for gifts, current subscribers also received a Zero 2 in the post. Subscribing is the best way to make sure you get any of the special items we give away! Project submissions If I have a Raspberry Pi project I’d like you to see, where is the best place to send it? I think it would be a great fit for…

Guyrandy is an engineer and maker from the US east coast. He got his bioengineering degree from the University of Pennsylvania, and currently works in the medical device industry. magpi.cc/ tunergitlab Let’s face it, there’s no point in having an ultra-cool guitar if you don’t have the means to make sure it stays in tune, especially if you’re pursuing a Springsteen-esque form of brilliance on the fretboard. Guyrandy Jean-Gilles is a musical maker who took Raspberry Pi Pico and created something rather special. “The goal of the project was to make a low-cost, automatic guitar tuner,” he tells us. “I’d been meaning to do a project with Pico and there are few development boards as cheap and well-documented.” Pico power Guyrandy developed his idea over a two-month period, and the…

A retired software developer currently living in Portland. He writes software for the community jams and plays bass guitar with them. communityjams.org While reading The MagPi, you might think that a reference to a Jam would be for a Raspberry Jam. In this case you’d be wrong, it’s about a community of musicians that like to play together. Over the course of last year, the way they play together had to change. Mainly, they had to move outside and that caused some problems. “Community Jams (communityjams.org) couldn’t play music indoors using our web‑based chords and lyrics application (magpi.cc/musicapp),” says Bob Steele, a retired programmer and current Community Jams member. “Outdoors, I put the app on a Raspberry Pi so we didn’t need an internet connection. Raspberry Pi had a web…

SAVE UPTO 35% Subscriber Benefits FREEDelivery Getitfastandfor FREE Exclusive Offers Great gifts, offers, and discounts Great Savings Save up to 35% compared to stores Rolling Monthly Subscription Low monthly cost (from £5) Cancel at any time Free delivery to your door Available worldwide Subscribe for 12 Months £55 (UK) £80 (EU) £90 (USA) £90 (Rest of World) Free Raspberry Pi Zero 2 W with 12 Month upfront subscription only (no Raspberry Pi Zero 2 W with Rolling Monthly Subscription) Subscribe by phone: 01293 312193 Subscribe online: magpi.cc/subscribe Email: magpi@subscriptionhelpline.co.uk JOIN FOR 12 MONTHS AND GET A FREE Raspberry Pi Zero 2 W WITH YOUR FIRST 12-MONTH SUBSCRIPTION Subscribe in print today and get a FREE computer! ▸ A full Raspberry Pi desktop computer▸ Learn to code and build your own…

We caught up with Simon Martin, Principal Hardware Engineer at Raspberry Pi and Eben Upton, founder and CEO of Raspberry Pi. Simon: “Raspberry Pi Zero 2 W is all about how much power you can pack into such a tiny space. It’s about just how much can we get from such a small form factor. “Keeping that same form factor is important. An original Raspberry Pi Zero can be removed from a project and Raspberry Pi Zero 2 W can be plugged into its place. Any application that was there beforehand will get a boost from the processor performance. “Instead of using the single-core processor that’s in the Raspberry Pi Zero, we’ve got a quad-core Cortex-A53 processor, which is similar silicon to the original Raspberry Pi 3 when that was…

K.G. holds that digital audio hardware peaked in the 1990s and is prepared to die on this preposterous hill. @KGOrphanides External MIDI sound cards were the pinnacle of 1980s and early 1990s computer music production and playback. We’ve used a Roland MT-32 and SC-55 in this tutorial, but you can use most external MPU, MT-32, GM, GS, or XG MIDI devices from the era. Although some current hardware MIDI sequencers are marketed to musicians, modern consumer audio interfaces usually lack integrated MIDI voices, and even early 2000s implementations can suffer variable General MIDI sound bank quality. However, the Serda 3XMA (magpi.cc/x3m) is a well-regarded and, at €79 (£68), relatively inexpensive modern USB MIDI interface with sound banks designed for backwards compatibility with the SC-55. 01 Hook me up If you’re using…

Getting Started in Electronics Price: £24.99 /$20 magpi.cc/electronicsmims Who better to teach you the fundamentals of electronic circuits than Forrest M Mims, the designer of the original Altair 8800 home computer? Billed as a complete electronics course in 128 pages, this classic tome is all the more remarkable for its handwritten text and hand-drawn diagrams! While there are more in-depth electronics books around, this one will certainly give you a solid grounding. Starting with the basics of electricity, it takes you on a tour of digital and analogue components and how they work. It moves on to integrated circuits and digital logic gates using switches and transformers. Linear circuits are also covered; responding to a wide range of voltages, they have many applications. Of most interest to us is the…

Price: £6 /$8 (or free PDF) hsmag.cc/issue48 The ultimate achievement in circuit design is to create your own printed circuit board (PCB), but it may seem a daunting prospect. The latest issue of our sibling magazine, HackSpace, demystifies the process with a 12-page feature showing you how to get started. As the article explains, “If you can build electronics on a breadboard, you can design a PCB. There’s no magical difference. Instead of wires, you just have traces of copper.” Using the EasyEDA online software (easyeda.com/editor), it takes you through all the steps of designing a PCB to work with a Raspberry Pi Pico. Starting with a schematic, various components are added, along with custom artwork and copper traces for connections. Finally, you can send your board design off to…

A Geomatics Engineering Master’s student at the University of Calgary, he is passionate about health and science, and applications of wearable technology. Light sensors, temperature sensors, humidity sensors, noises sensors (i.e. microphones) are all fairly common, however gas sensors are not something you see everyday. Using them specifically to ‘smell’ your surroundings is even rarer. Luis Rodriguez Mendoza is the creator of one of these rare projects. After learning about the different and weird things dogs have been trained to identify by smell at the airport, Luis asked the question of whether he could do something similar with low-cost gas sensors. “The purpose of the project is to show that low-cost sensors can be reliable in detecting odours and that they can possibly be used in clinical settings.” Luis tells…

MohammadReza is a self-described geek, gamer, writer, cinema lover, YouTuber, and engineer. He lives in Khuzestan, Iran. magpi.cc/ picorobot Robotics projects have long been popular among the Raspberry Pi community, but MohammadReza Sharifi’s outstanding contribution definitely has a touch of va va voom about it. Powered by a Raspberry Pi Pico, his four-wheel drive car is controlled using the accelerometer in an Android smartphone. “The idea suddenly came to my mind,” he tells us, “and it took me about three hours to build and program.” That itself is impressive, particularly given the work needed to get things moving. It all began two months ago when MohammadReza was browsing Instagram. “I saw a promotional video about a toy in which a coloured ball was being controlled by mobile gestures,” he says.…

Handheld console There are many retro gaming projects for Raspberry Pi, and Raspberry Pi Zero lends itself extremely well to small, handheld consoles. Attach a screen, battery, consoles, and a 3D-printed case, and you’re good to play handheld classics. There are some handy kits you can get to help build your handheld console, like this RetroFlag GPi Case. magpi.cc/retroflaggpi Handheld camera Raspberry Pi Zero 2 W has the CSI (camera serial interface) port found on most Raspberry Pi computers, enabling you to connect a Raspberry Pi Camera Module to the device. And the official case has a cover with a pin-hole space for the camera. Many makers have taken things further with 3D-printed cases and LCD screens. Take a look at PolaPi-Zero for inspiration, and a guide to make your…

Longtime contributor to The MagPi, Phil is a freelance writer and editor with a focus on technology. @philkingeditor Humans experience the world through a range of senses. This enables us to be aware of whatever’s happening in our environment so that we can react to it. So, it makes sense (no pun intended) that your Raspberry Pi would also benefit from being able to sense things. Fortunately, this is made possible using a wide variety of electronic sensors. In this series, we’ll explore some of the most commonly available sensors and their use cases. To start off, we’ll build a simple fire and gas leak alarm system using a couple of sensors. When either hazard is detected, a visual and audible alert will be triggered. 01 Connect flame sensor For…

PJ is a writer, software developer and tinkerer. His server has just told him it’s time for lunch. This might be getting out of hand. twitter.com/ mrpjevans In the previous parts of this tutorial, we’ve taken a Raspberry Pi 4 and turned it into a file sharing, media streaming powerhouse. Next we’re taking on your network. There are so many ways to enhance your home (or office) network that we can’t hope to fit them into a few pages. However, these steps will point you in the right direction and hopefully inspire you to make your home network smarter, faster, and more convenient to use. Follow along and we’ll automate your home, allow you to access your data securely from anywhere in the world, and automatically protect you from nefarious websites.…

> Hiwonder > hiwonder.hk > £380 /$519 TonyPi is a 37 cm-tall humanoid robot with plenty of personality to keep you engaged as you learn fun ways to interact with him. He can either be controlled via an iOS or Android app, or you can use a Raspberry Pi, Windows PC, or Mac. Containing a Raspberry Pi 4, TonyPi comes preassembled (aside from the connectable head), so the fun here is all about controlling him. He’s a solidly built fella, with angular joints and broad lower arms and hands primed for scooping up coloured balls on command. We rather liked his all-white finish, which contrasts with his 14 deliberately visible LX-824HV servos. Agility-wise, TonyPi can walk, shimmy, wave, bow, get up, and turn his head – all from the smartphone…

SIMPLE ELECTRONICS WITH GPIO ZERO Build breadboard-based electronic circuits connected to Raspberry Pi and control them with Python programs and the easy-to-use GPIO Zero library. > magpi.cc/gpioessentials MAKE: ELECTRONICS A great primer for general electronics, it’s full of interesting facts and runs you through 36 ‘experiments’ building circuits using standard components. > magpi.cc/ makeelectronics ELECTRONIC CIRCUIT DESIGN IDEAS Aimed at the more advanced user, this weighty compendium covers over 170 circuit types and explains them in great detail with diagrams. > magpi.cc/ circuitdesignideas…

I first encountered the concept of computers when my visiting aunt reached into her bag and triumphantly produced lengths of stiff cardboard with seemingly random bits punched out. Whereas my mum had been one of the earliest female students of cybernetics, her sister had gone into teaching maths. Both were perfectly placed to encounter programming 1970s-style, and my mum spent two happy years as a Fortran programmer. School meant Casio watches and LED displays; sometimes built into pleasingly flexible, twangable rulers; sometimes embedded into the shaft of a pen. Resetting the time and date was the ideal excuse to linger in a classroom while chatting to (aka flirting with) nerdy, but nice, schoolmates. Almost without fail, an overlooked friend would interject with a rude word spelled out on their fancy scientific…