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Getting the best out of OpenSCAD
A write-up of how I use OpenSCAD to produce designs for manufacturing, and how I post-process the output to get the best results.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,807 posts.
Hardware & Electronics
Any year
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Measuring keyboard-to-photon latency with a light sensor
For a long time when I’ve wanted to test the latency of computers and UIs I’ve used the Is It Snappy app with my iPhone’s high speed camera to count frames between when I press a key and when the screen changes. However the problem with that is it takes a while to find the exact frames you want, which is annoying when…
4084
Wireless Amiga Tank Mouse
Taking a look at a Wireless Tank Mouse that I picked up from Sordan.ie and seeing how well it works with my Commodore computers.
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Why Intel is adding instructions to speed up non-volatile memory
The latest version of the Intel manual has a couple of new instructions for non-volatile storage, like SSDs . What's that about?
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Kobol Team Is Pulling the Plug from “Helios64 Open Source NAS”
Kobol Blog. The Open Source NAS
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How to run an Arduino for years on a battery (2021)
Build an autonomous Arduino system optimized for ultra-low power consumption. How to Run an Arduino for Years on a Battery Build an autonomous Arduino.
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With PowerPC, Windows CE and the WiiN-Pad Slate, Everyone's a WiiN-Er
Telemedicine (and mobile health generally) accumulated a hunk of public mindshare during the pandemic emergency, but speaking as someone wit...
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Reverse-engineering an unusual IBM modem board from 1965
The vintage IBM circuit board below has a large metal block on it that caught my attention, so I investigated it in detail. It turns out t...
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80386 Memory Pipeline
The FPGA 386 core I've been building now boots DOS, runs applications like Norton Commander, and plays games like Doom. On DE10-Nano it currently runs at 75 MHz. With the core now far enough along to run real software, this seems like a good point to step back and look at one of the 80386's performance-critical…
4096
A Pixel Purse LED Cube Controlled by a Cisco 3G Modem
I presented this project at BangBangCon West 2020, but never got around to publish a blog post about it. A 10 minute talk is not enough to cover some technical aspects, and since I’m starting to forget them, it’s about time to write things down.
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Microsoft's Majorana 1 chip carves new path for quantum computing
Majorana 1, the first quantum chip powered by a new Topological Core architecture
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‘Instantly rechargeable’ battery could change the future of electric automobiles
Purdue University is a world-renowned, public research university that advances discoveries in science, technology, engineering and math.
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Apple Vision Pro – Potential hardware issues
Introduction This part will primarily cover the hardware and related human physical and visual issues with the Apple Vision Pro (AVP). In Part 3, I intend to discuss my issues with the applications…
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Building my $1,200 Hackintosh
I’ve wanted a new Mac for awhile now. Now I have one faster than almost any Mac that Apple can sell you. Here’s how I built it.
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Envisioning a Simplified Intel Architecture
Intel investigated architectural enhancements and modifications for a 64-bit mode-only architecture.
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What's the risk from fake Yubikeys?
I found this on a security-related Slack (shared with permission). It launched an entertaining discussion about the risks of taking a potentially fake FIDO token. We all know the risks of taking a free USB drive and shoving it in our computer, right? USB sticks can install software, act as a keylogger, transmit data…
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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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Leonardo, the Bipedal Robot, Can Ride a Skateboard and Walk a Slackline
Researchers at Caltech have built a bipedal robot that combines walking with flying to create a new type of locomotion, making it exceptionally nimble and capable of complex movements.
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Building a USB to Mac ADB keyboard adapter
Write-only blogging
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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…