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HomeIoTSteve Anderson's Loki Is a "Tremendous Spectrum" Combining Raspberry Pi 4 and...

Steve Anderson’s Loki Is a “Tremendous Spectrum” Combining Raspberry Pi 4 and FPGA Energy in a Customized Case



{Hardware} hacker Steve Anderson’s Loki is a near-cyberdeck with a distinction: alongside the almost-prerequisite Raspberry Pi single-board pc is a field-programmable gate array (FPGA) board designed to offer compatibility with the classic Sinclair ZX Spectrum residence pc household.

“Like roughly 102% of cyberdeck builds there is a Raspberry Pi inside,” Anderson writes of the work-in-progress Loki. “In contrast to these builds Loki additionally has hardware-level ZX Spectrum compatibility due to a ZX Uno FPGA board lurking in there as properly. Each can function on the identical time, with the 2K show and hand-wired keyboard switching between the HDMI and USB of the Pi, and the VGA and PS/2 of the ZX Uno.”

That is not the one {hardware} housed inside Loki’s luggable casing: there is a Raspberry Pi Pico, which makes use of its RP2040 microcontroller to interface with a mechanical keyboard, offering the bizarre means to change between connecting to the Raspberry Pi 4 Mannequin B over USB and the ZX Uno by way of PS/2 and providing a compact OLED panel for standing show.

“Loki is type of a cyberdeck,” Anderson writes, “though I do not prefer to name it that as a result of it isn’t got down to be hyper-portable. It does nonetheless have a battery pack, in addition to taking a 12V PSU enter. Loki’s show is a 2K display screen from an iPad. The driving force board has each HDMI and VGA inputs, to allow them to be switched from one to the opposite. The HDMI enter passes via a KVM change in order that exterior boards can use the keyboard, trackpad and display screen as properly.”

Whereas the identify could conjure up pictures of the Norse trickster god, or Marvel’s well-liked interpretation of the identical, that is not the supply of the moniker: “Loki is not named after the Marvel anti-hero (though I beloved the present), nor (instantly) to the Norse god, however after a mocked-up ‘Tremendous Spectrum’ that Sinclair Person journal made an enormous deal about, and that younger me wished desperately to personal, however did not truly exist,” Anderson explains. “On condition that was a dream pc to me then, and that is no matter I need it to be, that is my Loki.”

Full progress experiences for the work-in-progress construct can be found on Anderson’s web site, the place the venture has been documented since November final 12 months; extra data is on the market on the Loki Hackaday.io web page.

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