OpenTitan Big Number (OTBN) Accelerator Hardware Extensions for Post-Quantum Cryptography – Extended Design Rationale

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DRAM pricing is killing the hobbyist SBC market

Today Raspberry Pi announced more price increases for all Pis with LPDDR4 RAM, alongside a 'right-sized' 3GB RAM Pi 4 for $83.75.

The price increases bring the 16GB Pi 5 up to $299.99.

Despite today's date, this is not a joke.

I published a video going over the state of the hobbyist 'high end SBC' market (4/8/16 GB models in the current generation), which I'll embed below:

But if you'd like the tl;dr:

Custom Images on CFA735 and CFA835

The CFA735 and CFA835 product lines have the option to store images on the display.

I am going to just use a simple TESTING text in paint to demonstrate how to convert and show on your display.

Name that Ware, March 2026

The Ware for March 2026 is below:

This ware malfunctioned, so I took it apart to see what’s going on and now it’s this month’s Name that Ware. As it would be far too easy to guess if I showed the whole circuit board, this is just a portion of the whole ware. I suspect the nature of the ware will be easy to figure out, but would be impressed if anyone can determine the exact make & model, since these are likely OEM’d by a handful of factories and the same core design is shared among a wide family of...

Winner, Name that Ware February 2026

The Ware for February 2026 is a WITRN C5. Congrats to Tim for guessing it, email me for your prize!

The rise and fall of IBM's 4 Pi aerospace computers: an illustrated history

The morning of April 12, 1981, 20 years to the day after Yuri Gagarin became the first person in space, the Space Shuttle thundered into the Florida sky. Commander Young and Pilot Crippen were at the controls as the Shuttle ascended on its first flight. But the launch, like much of the flight, was really under the control of four computers in the avionics bays one deck below the crew. A fifth computer stood ready to take over in case of a catastrophic computer malfunction. These computers, Model AP-101B, were part of IBM's System/4 Pi family.

Two TFT Graphics Libraries

This article describes two alternative graphics libraries that support a range of different colour TFT displays, and combine fast performance with minimal memory usage:

The Sampler example running on an ATtiny85 and
driving an Adafruit 1.28" round 240x240 colour TFT display.

Introduction to the PineTime Pro

How is your day/night going RSS readers? In this blog post we go in depth on the new PineTime Pro hardware and share some pre-production information from JF.

Bring back MiniDV with this Raspberry Pi FireWire HAT

In my last post, I showed you to use FireWire on a Raspberry Pi with a PCI Express IEEE 1394 adapter. Now I'll show you how I'm using a new FireWire HAT and a PiSugar3 Plus battery to make a portable MRU, or 'Memory Recording Unit', to replace tape in older FireWire/i.Link/DV cameras.

The alternative is an old used MRU like Sony's HVR-MRC1, which runs around $300 on eBay1.

FOOF. Воспроизводим легендарный баг в процессоре Pentium

Приветствую всех!

Думаю, при упоминании знаменитого бага в процессоре Intel Pentium на ум сразу приходит ошибка деления. Но, как оказывается, она была не единственным косяком этих чипов.

Первые «пеньки» имели ещё одну интересную особенность: существовали «роковые» четыре байта, выполнение которых заставляло компьютер зависнуть намертво. Что же это была за ошибка, как она проявлялась и как её воспроизвести? Сейчас и узнаем.