Innehållsförteckning för #125 från Raspberry Pi Official Magazine

With any luck, you found a Raspberry Pi gift under the tree this Christmas. If you're new: welcome to the party! Pull up a chair, pick up a copy of this magazine, and get ready for a wonderful world of making. You'll find our Starter Guide on page 28, and a Raspberry Pi OS Guide on page 36. Newcomers to Linux should check out our Terminal Starter Guide (page 48). Meanwhile, veterans looking for inspiration really should read our Arts & Crafts guide (page 70), and we have some wonderful tutorials this month: from putting a Raspberry Pi camera in an aquarium (page 56) to building a display kiosk (page 60). I've loved putting together this issue. It's great to be reminded of just how exciting it is to pick…

MAKER magpi.cc/makaniu It would seem there are few limits to where Raspberry Pi can go. The computer has been used in the Antarctic and on the International Space Station. It has also, as this project proves, plunged deep underwater - in this case, furthering scientific knowledge and enabling more people to explore the world's oceans. Indeed, without Maka Niu - a small, lowcost, deep-sea image and data collection system that has Raspberry Pi at its heart - Katy Croft Bell, president of the Ocean Discovery League, says such exploration could continue to be the exclusive domain of the wealthy. “By making this technology open and available to anyone,” she says, “we hope to bring more equity to this important field.” This has far-reaching benefits. Less than one percent of the…

MAKER magpi.cc/nikodemyt Attracted by Raspberry Pi Pico W's built-in Wi-Fi and the ability to program it in MicroPython, Nikodem Bartnik knew he had to make a project with one, but wasn't sure exactly what. Inspiration struck when he attended a CubeSat Summer School in Belgium. On a visit to the Euro Space Center, he saw a field with mini Mars rovers. Nikodem had to fit the building of his own remote-controlled Mini Mars Rover around his other university work, and there was plenty to do, including designing it from scratch in CAD and undertaking a lot of 3D printing and CNC machining. “All parts were designed in such a way that you can print them on the most popular FDM 3D printers and you don't need a huge build plate,”…

K.G. Orphanides KG is a writer, developer, and software preservationist, They own one of those 1990s joysticks shaped like Giger's Alien and can confirm that it's not very comfy to game with. magpi.cc/ MAKER hauntedowlbear You'll Need ArduinoIDE2.0.2 or above PicoGamepadlibrary DB9joystickINO file ADB9joystick Serialport(male) We'll be using Raspberry Pi Pico to convert input from a 9-pin DB-9 joystick, via male D-sub port, into USB input recognised by any modern PC. We refer to these 9-pin D-sub connectors as ‘DB-9' - because it is the most widely used term - but they are more correctly called DE-9 connectors, which you'll also find used. It's the same physical connection as an RS232 serial port and a D-sub port, which makes for a long list of terms used interchangeably. We'll be programming…

@ben_everard Ben's house is slowly being taken over by 3D printers. He plans to solve this by printing an extension, once he gets enough printers. Raspberry Pi Pico W is a fantastically powerful development board, but, like many, it's limited to a puny 3.3 V, and the GPIOs can only handle a smattering of microamps. This is fine for blinking LEDs, but if you want to run motors, or interact with more powerful components, you're going to need extra circuits. There's a whole host of options for this, including relays, motor drivers, and power MOSFETs, and you could add them to Pico W yourself. Fortunately however, the good folks at Pimoroni have already done this for you. In this article, we'll look at working with the bare Pico 2040 W…

Core Data magpi.cc/relayfi From £26 / $31 SPECS MICROCONTROLLER: ESP32 CONNECTORS: Relays × 4, 5 × 3 component pins, I2c breakout, USB micro data port RADIO: Wi-Fi, BLuetooth 4.2, BLE Warning! Mains Electricity Relays can be very dangerous as they convert high currents. Only use one ifyou're experienced: magpi.cc/electricalsafety ESP32 devices are a more traditional way to use IoT over a Wi-Fi network - in fact when Raspberry Pi Pico first came out, several add-on boards added Wi-Fi using it. Unlike Pico, RelayFi is much more focussed towards home automation, while also in a fairly small package. The four relays take up most of the board and handle conversion and control for four mainspowered devices. We highly suggest getting some kind of case for the board as there are solder points…

HTML & CSS Jon Duckett's twin book set for web designers and front-end developers is a lovely pair of books packed with detaited information in a clear and useful style. htmlandcssbook.com THE PRINCIPLES OF BEAUTIFUL WEB DESIGN If you want to make websites that don't just work, but took wonderful., this is the book to pick up. It's packed with great designs. magpi.cc/beautitulweb LEARNING WEB DESIGN Jennifer Niederst Robbins's book is the place to start if you are an absotute beginner. It takes you through building web pages that work using the very latest HTML5 and CSS3 code. learningwebdesign.com…

The MagPi | THE FINAL WORD In one of these columns in the past, I've definitely mentioned how I don't like to live life with regrets - if it's happened, you can't change it, you can only learn from it. I do like to remind myself of good things that have happened in the past though, especially if they inspire me to do more in the future. This also means mentally rounding up the year I've had, in the hopes that I feel like I have accomplished something. In 2021 I struggled. I personally began streaming regularly and it turn outs that it really eats up your free time! Especially when you're starting from scratch and needing to do a crash course in OBS, overlays, and sound boards. For 2022,…

MAKER magpi.cc/hobbyview Like many millions of us, “maker/tinkerer” Fitz Walker holds classic Doctor Who in very high regard. As an electrical engineer and computer scientist, he was better placed than many Whovians to show off his love of the show by building his own replica K-9, giving it “modern components” with Raspberry Pi. Keeping the ‘use whatever you've got to hand' ethos of the original Doctor Who sets, a loo roll holder disguises an unexpected K-9 defence mechanism. The K-9 project helped Fitz fulfil an ambition to build a film replica of one of their “favourite companions to my favourite Doctor” [Tom Baker, naturally] and “to experiment with Raspberry Pi and other microcontrollers, and electronics to see how well they might replicate all the animatronic and visual features of the…

MAKER veeb.ch Sourdough baking, getting a pet and decluttering your home before filling it with houseplants to make it Instagram-worthy all had their moment during the Covid pandemic. Of these three trends, acquiring indoor plants appears to have had the most longevity. If you're off to visit friends and family over the festive break, or jumping on the long-vacation-toavoid-winter-and-heating-bills bandwagon, it might be time to consider how your plants will fare while you're away. This Pico Plant Waterer saves you bothering a neighbour to pop in and do the honours. For Vanessa Bradley and Martin Spendiff, collectively known as VEEB, the scenario came up because their “lovely” neighbour sometimes watered their houseplants, but the plants didn't always survive the experience. To save any more plants dying, they designed a carefully…

MAKER magpi.cc/picar Tinkering and modifying a car is a timehonoured tradition among mechanics and engineers. Upgrading the sound system has always been a part of that too. However, that usually means putting in a pre-made head unit and maybe replacing the speakers. Vincent Moscaritolo has gone a step further with the sound system, giving it a full Raspberry Pi makeover. “I have made extensive modification to my Jeep, including replacing the motor with a Chevy LS 6.0 V8,” Vincent tells us. “This required some hacking into the Jeep's CAN bus to fool the Jeep into thinking it still has a motor. There is so much useful information present on the network that is not presented to the driver, and it frustrated me that one of the main user interfaces on…

RASPBERRY PI OS Navigate the official operating system and its applications When you first power up Raspberry Pi, you will be greeted by a Welcome Wizard that takes you through the initial setup process for the operating system, including locale settings, creating a user, and connecting to Wi-Fi. Once setup is complete, you are prompted to restart Raspberry Pi. After a short delay, you will then see the Raspberry Pi OS desktop. Around the desktop The desktop GUI for Raspberry Pi OS looks similar to that on many other computer systems. At the top is a taskbar that shows a few pinned applications on the left: by default, the Chromium web browser, File Manager, and Terminal. The No matter which model of Raspberry Pi computer you have, you have a…

MAKER mastodon.social/@mrpjevans You'll Need > Entaniya Waterproof Case for Camera Module magpi.cc/waterproofcase > 1oo cm cable magpi.cc/longribboncable > Camera Module 2 magpi.cc/cameramodule This tutorial was inspired by the Entaniya waterproof case for the Raspberry Pi Camera Module. This case protects the Camera Module without distorting the image. With it, we can submerge a camera into the depths of an aquarium and keep an eye on our fishy pals by streaming video. If that doesn't appeal, you can adapt this tutorial to be able to monitor a video stream of anything you like, whether it be indoors or outdoors. Combined with Home Assistant, you can soon be monitoring your cameras from anywhere in the world. 01 Prepare you Raspberry Pi For the best picture quality, a Raspberry Pi 4 is the perfect…

Name Jeff Geerling Occupation YouTuber Community role Maker URL jeffgeerling.com Getting your kids into your interests and work is a bit hit or miss. You can never force anyone to like anything. Luckily for Jeff Geerling's Dad - and maybe Jeff himself - he was able to share his interests. “My Dad would bring random bits of computer hardware and electronics home from work, and he let me use his workshop to build things,” says Jeff, a tech YouTuber who covers a lot of computer-based topics, “He encouraged me to try things until they worked, and instilled in me the ‘hacker' spirit, where you learn by doing something wrong a few dozen times, until it works. “And sometimes you accidentally short a computer's power supply and end up with a…

MAKER @philkingeditor Get Started with the Command Line book To discover more useful commands and tips for using the command line on Raspberry Pi, check out our Conquer the Command Line book, available as a free PDF: magpi.cc/commandline The standard version of Raspberry Pi OS has a user-friendly graphical user interface, but there are a few limitations to what you can do with it. That's where the command line comes in, enabling you to get under the hood of the system and unleash the power of textbased commands. You can access the command line in several ways. The simplest is to open the Terminal app in Raspberry Pi OS (Figure l) - either by clicking its icon (a black rectangle) in the taskbar or opening it from the menu -…

MAKER raspberrypi.com/tutorials You'll Need RaspberryPianymodel) USB-Cpowersupplyunit(PSU) microSDcard HDMIcable MonitorTVor other suitable display Kiosks are designed to offer users specific information or a specific experience, while preventing access to any other activities on the device. They are often found in airports, shops, hospitals, cafés, and museums – any location where people need easy access to information or services like timetables, waiting times, product information, directions, self check-in machines, and so on. Kiosk mode on your Raspberry Pi allows you to boot straight into a full-screen web page or an application without using the desktop environment. It's the foundation for many different projects where you want to display information for a dedicated interaction with a user. 01 Choosing the right Raspberry Pi and accessories Kiosk mode will work on any Raspberry Pi.…

Introduction to web development AUTHOR Future Learn Price: Free magpi.cc/flintrowebdev The internet remains central to our lives, and creating websites is the best way to get information across to a range of people. Plus, web design and development is a foundational skill that all coders should have Raspberry Pi is ideal for integrating with websites. As well as acting as a regular computer, it can be set up to act as a server to deliver web pages. And with its physical computing interface, Raspberry Pi integrates real-world items (such as sensors or motors) with online websites This allows you to remotely control and monitor an environment via a website. HTML, CSS, and JavaScript are cornerstone technologies for website development. Raspberry Pi's Future Learn course has all of them covered. This…

Fish-feeding apps Regarding the Automatic Fish Feeder Deluxe - will Erik make an iOS version of the software? Ted via email The software that you is a special app for the aforementioned fish feeder from issue 124 (magpi.cc/124) - it's a fairly simple app that communicates with the fish feeder as long as it's connected to the same network. It uses UDP multicasting tech for this, similar to how you might stream media over your network. This means multiple phones can connect at once. Building apps for iOS is a bit different from Android, so we're not sure how easy a port it would be. The source code is available from his GitHub (magpi.cc/fishfeederapp), so if you have some know-how with iOS app programming, you can probably do some porting…