Custom PC, Issue 156

Custom PC Issue 156The latest installment of my long-running Hobby Tech column for Custom PC is four-strong this month: as well as a two-page review of the Particle Electron GSM microcontroller, you’ll find reviews of the Pimoroni Black Hat Hack3r family of Raspberry Pi add-on boards, vintage computing simulator TIS-100, and a look at open-source laser-cut tool holder designs from Wim Van Gool.

First, the tool holders. I’ve never been known for keeping my workspace neat and tidy, but I’ve found that as long as there is something nearby to slot things in I can be trusted to put things back at least half of the time. Trouble is, pen holders are somewhat ill-suited to smaller tools and dedicated tool holders are expensive. Imagine my joy, then, when I discovered that Wim Van Gool had published design files for a pair of tool holders designed specifically for the sort of compact tools you need for detail electronics work to Thingiverse – and, better still, that they could be cut from cheap medium-density fibreboard (MDF).

The Particle Electron, meanwhile, came to me courtesy a Kickstarter campaign I backed following my delight with the Particle Photon – or, as it was known when I reviewed it back in Issue 132, the Spark Core – Wi-Fi microcontroller. Like its predecessor, the Particle Electron is Arduino-like and powered by Particle’s excellent web-based IDE and cloud infrastructure; where the Photon uses Wi-Fi to connect, though, the Electron uses international mobile infrastructure in either 2G (as reviewed) or 3G flavours. For remote projects where Wi-Fi connectivity can’t be guaranteed, that’s fantastic – but be aware that there are ongoing costs, and that the device is locked down to Particle’s own SIM card (supplied).

Pimoroni’s Black Hat Hack3r boards, meanwhile, are significantly less ‘clever’: at their hearts, the Black Hat Hack3r and Mini Black Hat Hack3r are nothing more than break-out boards for the Raspberry Pi’s 40-pin GPIO header. Designed in-house to speed Hardware Attached on Top (HAT) development and released as a product following considerable demand, the ‘dumb’ break-out boards are nevertheless a treat to use: it’s possible to connect a HAT to any model of Pi minus the Compute Module and still retain access to all 40 pins for additional hardware or debugging purposes, or even to daisy-chain the boards to connect multiple HATs to a single Pi – if you don’t mind hacking around the EEPROM issues that may cause.

Finally, TIS-100. I don’t normally¬†review games, but TIS-100 isn’t a normal¬†game: developed by Zachtronics, the creator of Spacechem and the Ruckingeneur series, TIS-100 gives the player control of a fictional 1980s computer system – the Tessellated Intelligence System – with a simplified instruction set. The task: to rewrite corrupted segments of the computer’s firmware, and in doing so uncover the mystery of what happened to the machine’s last owner ‘Uncle Rudy.’ In short: it’s half-game, half-programming-exercise – and pretty much all fantastic.

All this, plus a wealth of other stuff from people other than myself, is awaiting you at your local newsagent, supermarket, or on digital distribution services such as Zinio.

Linux User & Developer, Issue 167

Linux User & Developer Issue 167This month’s Linux User & Developer includes my review of Pimoroni’s Black Hat Hack3r family of break-out boards, designed for both the mainstream Raspberry Pi and ultra-compact Raspberry Pi Zero single-board computers (SBCs).

While Pimoroni isn’t exclusively focused on the Raspberry Pi platform, it’s no secret that the Sheffield-based company has plenty of ideas in mind for enhancing the popular devices. The Black Hat Hack3r range started out as an internal development tool, designed to make it easier to debug Hardware Attached on Top (HAT) devices – add-on boards which cover the 40-pin general-purpose input-output (GPIO) header on top of the Raspberry Pi – without having to deal with a rat’s nest of cables or easily-knocked debug clips.

The boards are simple at their heart: with no active components, all they do is mirror the GPIO header. A ribbon cable connects the board – available in full-size and a Mini variant designed specifically for the Raspberry Pi Zero – to the Pi’s GPIO header, and the HAT under investigation is connected to the mirrored header. A third header then provides full access to all 40 pins, which opens up a wealth of possibilities: you can add additional hardware at the same time as the HAT, sniff signals coming to or from the HAT for debugging or reverse engineering reasons, or even connect more than one HAT to a single Pi by daisy-chaining multiple boards.

I’ve long been a fan of Pimoroni’s designs, and the Black Hat Hack3rs are no exception to the company’s rule of clever boards with attractive layouts and finishes. To get my full opinion, though, you’ll have to pick up a copy of Linux User & Developer Issue 167 from your nearest newsagent, supermarket, or electronically via digital distribution services such as Zinio.