Custom PC, Issue 144

Custom PC Issue 144In this month’s Hobby Tech column, I report from the Halifax Mini Maker Faire, build a 4tronix Agobo robot, and take a look at the Acorn x86 Card – a device that let Acorn users try out the joys of Microsoft’s Windows 95.

First, the robot. Designed as a lower-cost and simpler alternative to the Pi2Go-Lite robot I reviewed back in Issue 135, the Agobo is one of the few kits out there designed specifically for the Raspberry Pi Model A+. While that means that you miss out on a few niceties, few of these – like the wired Ethernet port – are all that important to a portable robot build. The advantages outweigh the negatives, too: the Model A+ draws less power, is smaller, lighter, and costs less; the only real shame is that there is no quad-core Raspberry Pi Model A yet available, leaving users stuck with the outdated single-core BCM2835 system-on-chip processor.

As with the Pi2Go-Lite, I enjoyed building the Agobo – a process which was a lot simpler, involving zero soldering and only a little bit of swearing as I tried to get the bearings in the front caster to cooperate – and programming it was a cinch thanks to 4tronix’s great samples. While it’s undeniably more limited than the Pi2Go-Lite or its full-fat Pi2Go brother, the Agobo could well be a good choice for beginners or the budget-conscious – but for a full conclusion, you’ll have to read the review.

I spent two days this month covering the Halifax Mini Maker Faire, with travel expenses very kindly covered by my client oomlout – for whom I’ve been doing regular blog posts – and it was, as these events always are, an absolute pleasure. Housed at Eureka, the national children’s museum, the event – a community-driven spin-off from Make’s Maker Faires – was well-attended, including by numerous guests who had never been to maker-themed events before. There were soldering workshops, hackspaces, a chap who builds automata out of toys, all kinds of wondrous things – and you can read about them in detail this month.

Finally, the Acorn x86 Card. I wasn’t planning to write about it, but I happened to find it while clearing out the office and thought it would be of interest to readers. A relic of the days before x86 compatibility was the norm in personal computers, the add-in card allowed Acorn’s ARM-based Risc PC to run Windows – even Windows 95, at the time the cutting-edge in operating systems. My particular example is a second-generation card featuring a Texas Instruments 486 processor, and I still haven’t got around to fitting it into my Risc PC despite having received it a couple of years ago…

All this, plus a selection of interesting things written by people who aren’t me, is available in Custom PC Issue 144 from your nearest newsagent, supermarket, or digitally via Zinio and similar services.

Linux User & Developer, Issue 151

Linux User & Developer Issue 151This latest issue of Linux User & Developer magazine includes, in addition to my usual four-page news spread, a two-page review of Intel’s latest entry into the embedded market: the Quark-based Edison, an ultra-tiny single-board computer the size of a postage stamp.

Sadly, the Edison I reviewed isn’t quite the Edison that Intel originally unveiled. The original Edison was to use the SD Card form factor, making it easy to build expansion boards by using a standard SD Card slot component. It was also to run exclusively on the Quark, a low-power x86 processor built from the old Pentium microarchitecture. The latter feature was nixed when feedback from users of the Galileo, another Quark-based embedded development board, revealed that it was too underpowered to be of much use; the former when Intel discovered it didn’t have enough pins on the SD Card layout to make useful connections.

The result of these last-minute modifications is the Edison you can buy today. The SD Card layout has been ditched for a stamp-sized board featuring a high-density Samtec connector on the underside, making it more awkward for hobbyist development, while the Quark chip is still present but relegated to coprocessor status while an Atom processor handles running the operating system.

My review sample, kindly provided by Intel UK, came with the Arduino-compatible break-out board. When connected to the Edison, this creates an overly expensive and extremely large development board with Arduino-compatible headers – but one which, the promise goes, you can use to refine a design which can then be implemented in a far smaller footprint using a bare Edison board and your own custom break-out board.

As for how I got on with the Edison and whether I rate it as any better than Intel’s previous offerings – the Galileo and MinnowBoard families – you’ll have to buy the issue to find out. If you do, you’ll also be treated to my regular four-page spread of all the latest news in the world of GNU/Linux, open-hardware, open-software, open-governance, and open-anything-else-that-catches-my-eye, plus a bunch of articles written by people who aren’t me.

Linux User & Developer Issue 151 is available in all good supermarkets and newsagents, many bad ones, and digitally via services including Zinio now.

Linux User & Developer, Issue 150

Linux User & Developer, Issue 150This month’s Linux User & Developer includes both my regular four-page news spread and a review of the MinnowBoard Max single-board computer from Intel.

The MinnowBoard Max is the latest in Intel’s increasingly scattershot efforts to make an impact in the hobbyist-grade single-board computer market. Like its predecessor, the MinnowBoard Max is open hardware and produced in partnership with CircuitCo – the company behind the BeagleBoard and BeagleBone Black – and features the x86 instruction set architecture. Where it differs is in how easy it is to use and how much power it can offer.

I reviewed the original MinnowBoard design back in Issue 131, and found it lacking on a couple of levels: the single-core Atom chip was woefully underpowered compared to rival boards like the Gizmo, and its 32-bit UEFI firmware made it near-impossible to boot any operating system bar the bundled and extremely cut-down Yocto Linux installation.

The MinnowBoard Max clearly demonstrates that Intel is listening to feedback, though. The 32-bit single-core Atom is now a 64-bit dual-core model, and comes complete with a 64-bit UEFI implementation. The result: significantly improved compatibility and performance. A single-core version, slightly cheaper and drawing less power, is also available but not something I have yet tested.

As to whether the MinnowBoard Max is a worthy investment in a market near-monopolised by chips based on the ARM instruction set architecture, you’ll have to read the full review to find out.

The review, my four-page spread of all the latest happenings in the world of open-everything, and a whole bunch of stuff written by other people is available now from your local newsagent, supermarket, or digitally via Zinio and similar distribution services.

Linux User & Developer, Issue 138

Linux User & Developer Issue 138Aside from my regular four-page news spread, this month’s Linux User & Developer includes two reviews: the Intel Galileo board, the company’s Quark-based answer to the Raspberry Pi; and the Pogoplug Safeplug, a Linux-based privacy-enhancing TOR gateway.

First, the Galileo. I was lucky enough to get my hands on one of the first retail units to hit the UK, and was eager to see what Intel had come up with. Based on its low-power Quark processor, which is a die-shrunk version of the classic Pentium instruction set architecture, the Galileo boasts full x86 compatibility and plenty of on-board connectivity. Where it differs from its rivals – and anything Intel has ever produced before – is that it’s also Arduino certified, and fully compatible with shields developed for that microcontroller’s esoteric pin layout.

It promises much: on-board Ethernet, out-of-the-box support for existing Arduino sketches, the ability to run a Linux environment, and even a mini-PCI Express slot on the rear for adding in wireless connectivity or other additional hardware. Can it live up to expectations? Well, you’ll have to read the review to find out.

The Pogoplug Safeplug, despite what the contents page splash might suggest, is not a storage device; rather, it’s a modified version of the company’s existing embedded storage gateway product to find a new market in the post-Snowden world. Connected to your internal network, the Safeplug acts as a gateway to the TOR network; all traffic is encrypted and anonymised with little client configuration required. As an added bonus, there’s even an advertising removal feature.

My verdict on both devices, plus stories covering Ubuntu 14.04, the Intel Next Unit of Computing, the Penn Manor School’s move to Linux, a £15 Firefox OS smartphone, Cisco’s IoT security challenge, the Nokia X and more can be yours in newsagents now. Alternatively, you can get the magazine digitally via Zinio.

Linux User & Developer, Issue 131

Linux User & Developer Issue 131The cover of this month’s Linux User & Developer Magazine highlights two of my latest features: a review of the Intel MinnowBoard and an interview with its evangelist Scott Garman. The direct comparison to the far cheaper Raspberry Pi, just to clarify, was an editorial decision in which I had no part.

The MinnowBoard is an interesting piece of equipment: based on a single-core 32-bit Intel Atom processor, it packs surprising power into a sub-10W package: gigabit Ethernet, USB, SATA and audio ports are all present and correct, while a ‘Lure’ connector gives access to additional capabilities including several PCI Express lanes.

The hardware itself isn’t the most interesting feature of the MinnowBoard, however. Intel has opted to make the board fully open, releasing schematics, Gerbers, firmware source code, and a Board Support Package (BSP) for the Yocto Project – certification for which the board carries proudly.

In this, the MinnowBoard is head and shoulders above the Raspberry Pi, which is a closed design, while offering significantly more power. Sadly, that power comes at a considerable price – you can expect to pay at least £160 for the MinnowBoard compared to £30 for the Pi. The MinnowBoard also struggles to compete with AMD’s equivalent, the Gizmo from Sage Electronics, which features a faster 64-bit dual-core processor with greater performance and wider OS compatibility and comes bundled with useful tools for embedded hardware and software development at a very similar cost.

Still, it’s an exciting project – and one Scott Garman, Yocto Project contributor, Intel employee, and the evangelist for the MinnowBoard project, is justifiably excited about. In my interview, Scott provided hints at the reasoning behind certain design decisions for the MinnowBoard, promises of increased compatibility with operating systems other than the bundled Angstrom Linux build, and admitted his undying respect for the Raspberry Pi Foundation.

All this, plus my usual four pages of Linux, open source, open hardware and open governance news, can be found betwix the pages of Linux User & Developer at your local newsagent, supermarket, or online via the Zinio digital distribution platform and others.

Custom PC, Issue 109

Custom PC, Issue 109This month’s Custom PC magazine is a rather special issue: it’s the only place you’ll find a step-by-step photographic feature on how to build Sinclair Computer’s ZX81 kit outside a time-travelling newsagent with good stock of 1981-era magazines.

Having purchased a ZX81 kit from a rapidly-dwindling stock, I knew that I would be building it rather than keeping it unassembled and its purpose in life unfulfilled. I also knew that I’d be trying my damnedest to get a magazine to pick up the story, for the simple reason that there aren’t many of these things left and I wanted as many people to enjoy a little glimpse of history as possible. Thankfully, Custom PC editor Ben Hardwidge agreed – and even put the feature on the top bar of this month’s cover.

The build was an interesting look back at how the face of computing has changed: while Sinclair’s kits required the user to know which end of a soldering iron was safe to hold, modern computing – for all its exponential increase in complexity and power – is relatively simple, requiring little more knowledge than required to put the square peg in the square hole.

It was also a chance for me to exercise my photojournalistic skills, rather than just my writing skills. Using my somewhat outdated Pentax digital SLR, a light tent, two halogen lights and a table-mounted stand, I was able to snap some surprisingly detailed photos using nothing more than the standard 18-55mm kit lens. These photos illustrate every single step, and the art department has done a great job on the layout of the feature.

As well as the exclusive ZX81 build, which has generated considerable interest, this month’s magazine includes my usual Mobile Tech Watch column. This month, I looked at the difference between the x86 and ARM instruction set architectures, and why Intel is going to have its work cut out to compete with ARM in the mobile space.

Finally, this issue includes my review of the Arduino Leonardo, kindly provided by Oomlout. Is it worth the upgrade from the Uno, and are there any downsides to the new single-chip approach taken by the Arduino team in its design? Better pick up a copy of Custom PC and find out, hadn’t you?

Custom PC Issue 109 is available in all good newsagents, most bad ones, and digitally via the Zinio service.