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Build an Ioniser in Under $10
A Do it Yourself project to help remove dust particles in your room. A completely open-source hardware project which you can download and use for free.
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Lego logic gates and mechanical computing
randomwraith.com - LEGO, Beer & pastimes
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Thermal Testing Raspberry Pi 4
Raspberry Pi 4 just got a lot cooler! The last four months of firmware updates have taken over half a watt out of idle power and nearly a watt out of fully loaded power
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Cartoons in Tektronix Schematics
Explore Tektronix schematic cartoons with vintageTEK. Discover hidden humorous drawings in manuals and schematics from classic Tektronix gear.
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A FrankenPad Story: T25 with Quad-Core CPU and UHD LCD Panel
I like T25. Although, it wasn’t the ThinkPad of a dream, and its placement as a retro ThinkPad sounds ridiculous and frustratingly, for me it was the best modern ThinkPad...
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Rust, a Raspberry Pi and Addressable LEDs
Tom Arrell's blog. Tom is a Software Engineer who writes about programming, embedded and electrical projects, and life.
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Spiders and ants inspire metal that won't sink
Rochester researchers have created a metallic structure so water repellent, it refuses to sink—no matter how often it is forced into water.
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ARM and Intel have different performance characteristics: a case study
In my previous post, I reviewed a new fast random number generator called wyhash. I commented that I expected it to do well on x64 processors (Intel and AMD), but not so well on ARM processors. Let us review again wyhash: uint64_t wyhash64_x; uint64_t wyhash64() { wyhash64_x += 0x60bee2bee120fc15; __uint128_t tmp; tmp…
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The Sad End of Intel Desktop Boards
As previously discussed on this blog, Intel decided to quit the desktop board business in 2013. What has not been discussed is how Intel treated the buyers of the last generation (i.e. 8-series Lynx Point chipsets) of those boards. Since I have now acquired two of those boards, DZ87KLT-75K and DQ87PG, I had an…
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IBM, sonic delay lines, and the history of the 80×24 display
What explains the popularity of terminals with 80×24 and 80×25 displays? A recent blog post " 80x25 " motivated me to investigate this. The ...
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Playing with a Raspberry Pi 4 64-bit
Lightweight virtualization is a natural fit for low power devices and, so, seeing that the extremely popular Raspberry Pi line got an upgrade, we were very keen on trying the newly released Raspberry Pi 4 model B. Getting the board up and running with a 64bit kernel (and a 64bit userland) proved to be kind of a…
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Put 1.7MB onto 1.44MB Floppies (1999)
How to create 1.7-Mbyte MDF floppies with GRDuw Windows shareware or Linux. Now add DNS server and full DHCP to floppy-bootable Linux.
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Reverse-engineering precision op amps from a 1969 analog computer
We are restoring a vintage 1 computer that CuriousMarc recently obtained. Analog computers were formerly popular for fast scientific compu...
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Capturing PAL video with an SDR, and a few dead ends
A blog about signals, programming, music, and other stuff.
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A completely rebuilt, digitally-enabled Polaroid SX-70 camera
A completely rebuilt digital Polaroid SX-70 camera
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SweRV – An Annotated Deep Dive of the SweRV RISC-V Core
Every 6 months, the RISC-V consortium organizes a two day workshop where various companies and research entities present work that is one way or the other related to RISC-V.
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Why Ice Lake is Important – a bit-basher’s perspective
With Computex, there’s been a ton of news about Ice Lake (hereafter ICL) and the Sunny Cove core (SNC). Wikichip, Extremetech and Anandtech among many others have coverage (and there will be …
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Extracting Bitlocker Keys from a TPM
Extracting BitLocker keys sealed with a TPM by sniffing the LPC bus
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Project Zipline – High-throughput low-latency compression
The Open Compute Project (OCP) Global Summit 2019 kicks off today in San Jose where a vibrant and growing community is sharing the latest in innovation to make hardware more efficient, flexible, and scalable.
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The mystery of my desktop that locks up when it gets too cold
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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Offline-Pedia converts old televisions into Wikipedia readers (2018)
There are villages in the Ecuadorian Andes that are so small you cannot find them on a map. Cajas Juridica is one such place, located just 13km north of the equator. But two engineering students, Joshua Salazar and Jorge Vega, and the staff of Yachay Tech University have figured out a way to give discarded….
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Fixed Layout Prototyping – Hexagonal Electronics Breadboard
daverowntree has one repository available. Follow their code on GitHub.