Tag Archive for Eben Upton

The MagPi, Issue 83

The MagPi Issue 83This week saw the release of the Raspberry Pi 4, first in a new generation of single-board computers from the not-for-profit Raspberry Pi Foundation. As is usual for the launches, I was approached by The MagPi Magazine – the Foundation’s official publication – to prepare coverage for the launch, including interviews, imagery, and a wealth of benchmarks.

My coverage for the magazine, spread across a whopping 12 pages, begins with a high-resolution hero shot of the board with macro-image call-outs for its key features and components – including the new USB Type-C power connector, BCM2711B0 system-on-chip, and shiny dual-micro-HDMI video outputs capable of driving high-resolution 4K displays.

Next, there’s an interview with Foundation co-founder Eben Upton covering everything from the reason the board is available now when a 2020 launch had previously been suggested, how it can potentially replace a desktop PC in a range of environments, backwards compatibility with the existing Raspberry Pi ecosystem, and a hidden Easter Egg on the PCB – only accessible to those brave or foolhardy enough to unsolder the USB connector.

The benchmarking section, spread across four pages, marks a departure from previous launches: this time around I pulled the focus away from synthetic benchmarks, though the classic Linpack still makes an appearance if only to demonstrate how the Arm processors’ NEON extensions can dramatically improve performance, in favour of a variety of real-world workloads: image editing with the GIMP, file compression with bzip2 and lbzip2, browser performance in Chromium, and gaming performance with OpenArena, alongside USB, Ethernet, and Wi-Fi throughputs. In all cases, the workloads are entirely reproducible: all packages used for the real-world workloads are available at launch in the Raspbian Buster software repositories. If four pages isn’t enough, additional benchmarks are available on my Medium post.

As usual, the benchmarking also includes a thermal analysis: images of the Raspberry Pi 4 and its immediate predecessor the Raspberry Pi 3 Model B+ were taken after a ten-minute CPU-heavy workload using a Flir thermal imaging camera, the data processed to a fixed temperature scale of 22-80°C to avoid noise from ambient surfaces, then overlaid on an edge-enhanced high-resolution visible-light image of their respective boards using a high-contrast rainbow colour palette. These images represent a fair amount of work, but there’s no better way to see both how hot the Pis get under continuous load and which components are responsible for that heat – not to mention how effective the design is at bleeding the heat off through the PCB, something with which the older Raspberry Pi models with plastic-encased chips have struggled.

Finally, the piece closes with a two-page interview with Simon Long on the new Raspbian ‘Buster’ operating system – launching ahead of the upstream Debian 10 ‘Buster’ release, interestingly – and its revised, flatter user interface. While much of the under-the-hood work for Buster was to get it ready for the Raspberry Pi 4 – previous Raspbian releases won’t work on the new board – it’s also available for older Raspberry Pi models, and comes with some convincing reasons to upgrade along with a handful of software compatibility issues that offer a reason to hang fire.

As always, The MagPi Issue 83 is available to buy in print format from all good newsagents, supermarkets, and book sellers; a free digital copy, released under the Creative Commons Attribution-ShareAlike-NoCommercial licence, is also available from the official website.

The MagPi, Issue 76

The MagPi Issue 76There’s no missing my contribution to this month’s The MagPi: it’s plastered all over the cover. The launch of the Raspberry Pi 3 Model A+ ends a four-year absence of the compact form factor from the Raspberry Pi line-up, and there’s no better way to celebrate its launch than with a massive cover feature.

The spread begins with a two-page introduction dominated by imagery of the board, before moving on to a plan view which calls out the individual components that make up the board – including the single USB port, BCM2387B0 system-on-chip (SoC), and the radio which, for the first time in a Model A variant, adds WiFi networking and Bluetooth connectivity. Each part includes macro photography, all taken in my in-house studio.

The next section of the feature runs through a series of benchmarks which, in-keeping with previous launches I’ve covered, compares the Pi 3A+ with other mainstream Pi models going all the way back to the original Raspberry Pi Model B. The feature also includes a look at the size and weight, the first time I’ve used that particular metric, along with comparative thermal imagery showing how the smaller surface area of the PCB copes with running the same high-performance processor as the larger Pi 3B+ – again, all captured in-house.

Finally, the cover feature closes with a two-way interview I conducted with project co-founder Eben Upton and principal hardware engineer Roger Thornton. In it, Eben confirms that the Pi 3A+ represents “tidying up ‘classic’ Raspberry Pi,” and that the Raspberry Pi 4 – still very much on the drawing board – will launch a whole new era for the low-cost single-board computer family.

The launch issue is available now from your nearest newsagent or supermarket in print, or can be downloaded free of charge under a Creative Commons licence from the official website.

The MagPi, Issue 68

The MagPi Issue 68The launch of a hardware refresh for the low-cost yet surprisingly-capable Raspberry Pi single-board computer is always a great opportunity to take stock of how the project has progressed since its launch six years ago, and the result is this: a special cover feature for The MagPi celebrating the release of the Raspberry Pi 3 Model B+, or Pi 3 B+ to its friends.

Following roughly the same format as my cover feature for the launch of the Raspberry Pi 3 from March 2016, and my cover feature for the Pi Zero’s launch back in November 2015, my multi-page feature begins with an overview of the board highlighting its key new features with high-resolution call-out photography: the new Broadcom BCM2837B0 system-on-chip which dispenses with the old plastic package for a new direct-die layout protected by a metal heatspreader; the new dual-band 2.4GHz and 5GHz Wi-Fi and Bluetooth radio module; a Pi Zero-inspired ground plane antenna, which boosts wireless performance still further; a Power over Ethernet (PoE) header for the optional PoE HAT; gigabit Network connectivity; and a custom-designed power management integrated circuit (PMIC) which improves regulation and assists with the clockspeed increase to 1.4GHz.

Taking a brief pause for a quick getting-started guide for those new to the Raspberry Pi, the feature then gets into its stride with a full suite of benchmarks across two pages. Measuring everything from CPU and memory performance to Ethernet throughput, power draw, and Wi-Fi signal quality, the benchmarks don’t just cover the Pi 3 B+ and its immediate predecessor; the benchmarks compare the new board to every single mainstream model of Raspberry Pi in the project’s history, all the way back to the original Model B from the initial pre-production run. If you’ve ever wondered how things have improved over time, this feature will let you know exactly that.

A further two pages are taken up by my interview with Raspberry Pi Foundation co-founder Eben Upton, who first introduced me to the project all those years ago. Diving into the changes and improvements made in the Pi 3 B+’s design, which is the work of engineer Roger Thornton, the interview also includes several behind-the-scenes images and – because I can never resist the opportunity – a thermal imaging analysis demonstrating how the new packaging and thicker PCB help the Pi 3 B+ deal with heat dissipation, despite its faster clock speed compared to the hot-running Pi 3.

To read through the full feature, which also includes a more detailed getting-started guide and ten project ideas which take advantage of the board’s increased power, head to your local newsagent, supermarket, or download the issue digitally under the permissive Creative Commons licence from the official website.

The Raspberry Pi User Guide, Fourth Edition

Raspberry Pi User Guide Fourth EditionWriting a book on a technical topic is like trying to nail fog. The more popular a topic is the faster it moves and the thinner the fog gets. Nowhere is this more true than the Raspberry Pi, which this month celebrated shipping its ten millionth single-board computer to makers, educators, hackers, tinkerers, and curious types worldwide. Accordingly, The Raspberry Pi User Guide was in need of an overhaul – and an overhaul it has indeed received.

The fourth edition of my best-selling guide to all things Pi now includes coverage of the Raspberry Pi 3 with its Bluetooth and Wi-Fi radios, an entire chapter on choosing and using add-ons including the official Raspberry Pi Touchscreen, Sense HAT, and Wi-Fi adapter, a completely rewritten guide to Raspbian which covers the latest changes to the distribution, and a shift in other chapters to cover more popular software including LibreOffice – now a default install option – and the OSMC media software.

Elsewhere, you’ll find things tweaked, polished, and brought bang-up-to-date. The networking instructions now cover the use of the DHCP configuration file for setting a static IP address, the GPIO chapter is refreshed, and you’ll even find instructions for correctly soldering GPIO headers onto the ultra-low-cost Raspberry Pi Zero.

For UK readers, The Raspberry Pi User Guide Fourth Edition is available to purchase now from Amazon; for international readers, check with your local booksellers or find links to other outlets via the official Wiley book listing.

The MagPi, Issue 43

The MagPi Issue 43It’s a special week for the Raspberry Pi Foundation: it’s celebrating its fourth birthday with the launch of the new Raspberry Pi 3. It’s a special day for me, too: the latest MagPi magazine boasts a total of thirteen pages of my content, including the cover splash: a detailed and thorough look at the new model.

Boasting on-board Wi-Fi (a community request since the original model launched four years ago), Bluetooth 4.1, Bluetooth Low Energy, and a faster 64-bit ARMv8 processor, the new Pi 3 is a bit of a beast. My cover feature for the magazine begins with a look at those behind it with a double-page spread featuring interviews with project co-founder Eben Upton and the Foundation’s director of hardware and the man responsible for circuit design James Adams – and a massive thank-you to both for sparing the time to talk to me at one of their busiest ever periods!

The feature then moves on to a look a the board itself, with a hero photo of the board spread across another two pages. Each major feature of the board, from the shiny new 64-bit BCM2837 system-on-chip (SoC) processor to the BCM43438 radio module – which required me to get out the microscope in order to capture its markings – has a call-out with close-up photography and an explanation of how it has changed since the Raspberry Pi 2.

Next up is a benchmark spread, which required me to come up with a detailed suite of tests. After some experimentation, I settled on a selection of classic benchmarks – SysBench CPU in single- and multi-threaded modes, Linpack with and without NEON support, Whetstone, Dhrystone, SysBench memory read and write, Ethernet throughput, Quake III Arena timedemo performance, and power draw at load and idle. As an added bonus, I also came up with a way of measuring general-purpose input-output (GPIO) performance under Python, writing a simple benchmark to toggle a pin on and off as quickly as possible and measuring the speed with a frequency counter connected to the GPIO header.

The next double-page spread looks at helping the reader get started with the new device. I walk readers through modifying an existing Raspbian installation to boot on the Pi 3 by editing config.txt, setting up the Wi-Fi module, enabling true OpenGL acceleration on the graphics processor, and how to write programs to get the best performance on the Pi 3. Sadly, I was unable to explain how to use the Bluetooth 4.1 and Bluetooth Low Energy features, as software support was not available at the time of writing.

The spread then ends with a look at five things you could do with a Pi 3 in order to take advantage of the new features and boosted performance. My work for the magazine continues, though, with a review of the Proster VC99 multimeter and Pimoroni pHAT DAC, before coming to a close with a one-page news piece regarding the production status of the popular Raspberry Pi Zero – helping to explain why it has been so difficult to get hold of and settling concerns that it may be bumped to the back of the production queue now the Pi 3 is out.

All 13 pages of my content, and plenty of other stuff by people who aren’t me, are available from your nearest supermarket or newsagent, or as a free PDF download under a Creative Commons licence from The MagPi’s official website.

CCS Resurrection, Issue 69

CCS Resurrection, Issue 69I recently joined the Computer Conservation Society (CCS) arm of the British Computer Society (BCS), a working group dedicated to preserving the heritage of computing that we have in this country. In addition to a lecture on classic British home computers, I was asked to contribute to the official CCS journal Resurrection with a piece on the Raspberry Pi.

While, as my feature for the magazine points out, the Raspberry Pi itself needs to age a few more decades before it will be of direct interest to computer conservationists, the story of its rise from nowhere to become the dominant force in hobbyist-targeted single-board computers is a fascinating one – and, interestingly, mirrors similar growth experienced by Chris Curry and Hermann Hauser’s Acorn Computers in the 1980s in more ways than one.

Taking in the history of the project from its origins as a microcontroller-based development system built on Veroboard through to the launch of the quad-core Raspberry Pi 2, my feature builds on my early experience with the project – having met co-founder Eben Upton during an event at Bletchley Park, where he showed off an early prototype – and interviews I have performed in the intervening years.

The latest issue of Resurrection is sent out to members automatically, or can be viewed online in any web browser.

Raspberry Pi User Guide, Third Edition

Raspberry Pi User Guide Third EditionThe recent launch of the Raspberry Pi Model B+, a redesign of the popular single-board computer that addresses some issues with the original while doubling the number of USB ports and increasing the size of the GPIO header, unsurprisingly means that there’s a need for a new user guide. As a result, it should come as no surprise that J. Wiley & Sons has published the Raspberry Pi User Guide Third Edition, a revised work that adds details regarding the new Model B+.

Completed earlier this year thanks to pre-release access to a prototype Model B+ provided by the Raspberry Pi Foundation, the latest edition of my book includes everything a reader needs to know about the latest model. The chapter on using GPIO has been updated to include a full pin-out of the new elongated header and details on how best to use the new USB ports have been added. It’s not all about the Model B+, however: there are entirely new chapters in this edition, including one covering basic programming with Minecraft: Pi Edition from Mojang.

The release of this third edition comes surprisingly soon after the Raspberry Pi Second Edition hit shelves, but those who have already purchased the previous edition needn’t panic: unless you have a Model B+ there’s little you desperately need to know that isn’t contained in the previous release, and if you have a burning desire to use Minecraft: Pi Edition you can find a similar tutorial in my recently-published MagBook 21 Brilliant Projects for the Raspberry Pi from Dennis Publishing – along with, as the title suggests, another 20 projects that you won’t find in the User Guide.

The Raspberry Pi User Guide Third Edition is due to arrive in stock at most outlets within the next couple of weeks, with Amazon UK taking pre-orders for a 19th of September delivery date. If you can’t wait that long, the Kindle Edition is already available for immediate download. Those buying in other countries or high-street book shops should ask their retailer for ISBN 978-1118921661. As with previous editions, numerous translations will follow in the near future.

Raspberry Pi User Guide, Second Edition

Raspberry Pi User Guide Second EditionSince I wrote the Raspberry Pi User Guide over a year ago, the project has changed dramatically. The Raspberry Pi Foundation has grown in size and stature, a new hardware revision has been released, the Model A finally hit the streets and users have been treated to dramatic improvements in the quantity, accessibility and quality of the software available.

As a result, I’m pleased to announce the release of the Raspberry Pi User Guide Second Edition. Significantly longer than the original release, the book has been thoroughly updated to cover the Model A, Model B Revision 2, and the Camera Module. Additional new features include step-by-step instructions for using the Raspberry Pi Software Configuration Tool, the New Out-Of-Box Software (NOOBS) installer, and various other tweaks to bring it bang up-to-date.

For those who haven’t taken the plunge into the world of Raspberry Pi yet, congratulations: you can now pick up a considerably better book to help you get started. For those who have already bought a copy of the First Edition, a consolation prize: I have negotiated with the publisher, Wiley & Sons, to produce an updated ‘Second Printing’ of the First Edition in eBook form. If you’ve purchased the First Edition in electronic format, delete and re-download the title to receive various free updates including Model A and Model B Revision 2 details. You’ll know if your particular store has updated the title, as there’ll be a sash at the top-right explaining the updated content.

The Raspberry Pi User Guide Second Edition is available from all good – and plenty of not-so-good – book sellers throughout the world and is also an official stock item of the Raspberry Pi Swag Store, profits from which go to help the Foundation complete its work in pushing the envelope of computing education both at home and abroad. High levels of interest in the title – the First Edition has at this point sold around 100,000 copies world-wide across its various translations – do mean that you may have a short wait for stock, though – so if you’re hoping to buy it as a Christmas present and see it available from somewhere, I’d advise against delaying your purchase.

Electronic copies of the Second Edition are at the time of writing hard to come by but, as with the First Edition, expect to see it in Kindle, Google Play Books, iBooks, PDF, ePub and various other proprietary and non-proprietary formats – as well as DRM-free via O’Reilly in the US – in the very near future.

Custom PC, Issue 119

Custom PC, Issue 119My four-page bumper column for Custom PC, wonderfully titled Gareth Halfacree’s Hobby Tech – and don’t I feel like the important one – continues this month, and once again is granted a cover splash thanks to the key magazine-shifting phrase ‘Raspberry Pi.’ That’s not all it contains, of course: once again the page count is split between a tutorial, retro computing, a pseudo-review and for the first time a box-out containing news from the world of the maker, hacker and tinkerer.

First, the tutorial. Thanks to my friends Eben and Liz Upton, I’m one of the lucky few to have received a Raspberry Pi Camera Module. The first official first-party hardware add-on for the Raspberry Pi, the Camera Module makes use of the Camera Serial Interface (CSI) port to provide a five-megapixel fixed-focus camera on a teeny-tiny circuit board smaller than most coins.

The software for the board is still very much in the early stages, but working well enough for the purpose of the tutorial: to use a Raspberry Pi as a timelapse photography system. Using a bit of Bash shell scripting – the Pi’s own camera software has a timelapse mode, but it doesn’t actually work just yet – the reader is walked through getting the camera connected, the software activated and the software running to capture Full HD stills every thirty seconds until cancelled or the SD card fills up.

This month’s review is of the excellent SpikenzieLabs Calculator Kit. Built around an Atmel ATmega microcontroller – the same one that powers the Arduino Duemilanove, in fact – the device is a cleverly designed kit that functions somewhat better as an exercise in neat soldering than a calculator. Nevertheless, I had fun making it – and I have a few ideas for how I can make use of the microcontroller’s other functions in later projects.

The retrocomputing fix is provided by the Amstrad Notepad Computer NC100, having picked up a mint-condition example from eBay just recently. Rather than sitting on a shelf, the NC100 is to form a part of my field kit – its moulded keyboard and 30-hour battery life make it great for taking notes at events – which provides a great example of how classic computing hardware can be used to augment more modern and powerful equipment.

Finally, there’s the news. Now to be a regular fixture – space permitting – I’ll be picking a couple of stories from the world of the maker to highlight major product launches, announcements or trends.

As always, I’d love to hear feedback about the column; response to the first has been uniformly positive, but if anyone has any ideas for improvements I’d be more than happy to hear them.

Custom PC Issue 119 is, as always, available from wherever you would normally find magazines, or digitally via Zinio and similar services.

Raspberry Pi User Guide, Dutch Translation

Raspberry Pi StartersgidsA parcel from Wiley & Sons dropped through my door this morning, containing a pair of author copies of yet another translation of my book the Raspberry Pi User Guide – this time into Dutch, as the Raspberry Pi Startersgids.

Not exactly a direct translation, the Raspberry Pi Startersgids is published by Pearson in distinctly abridged form: while the first half of the book has made the transition intact, much of the second half has been removed entirely: there’s no sign of the chapters on programming in Python or Scratch, for example, nor on how to build your own hardware. There is a chapter dedicated to the GPIO port, but it makes no reference of available add-on boards.

Pearson appears to be positioning the Rasbperry Pi Startersgids as the first in a series of books – and, at present, I have absolutely no idea whether the second book will contain the material missing from the Startersgids. When I have more information from Wiley, I’ll update this post.

For now, however, the Raspberry Pi Startersgids is a great way to dive into the world of Raspberry Pi – even if you may have to look elsewhere for Dutch-language Python, Scratch and hardware-hacking materials.