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Virtualizing iOS on Apple Silicon
Nick Botticelli's personal website
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Python client for the $20 Colmi R02 smart ring
Open source python client to read your data from the Colmi R02 family of Smart Rings. 100% open source, 100% offline.
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Google's First Tensor Processing Unit: Architecture
Looking in more detail at Google's first Tensor Processing Unit
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How to build a $20B semiconductor fab
For the last several decades, one avenue of technological progress has towered over nearly everything else: semiconductors.
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An IRC client in your motherboard
I made a graphical IRC client that runs in UEFI. It’s written in Rust and leverages the GUI toolkit and TrueType renderer that I wrote for axle’s userspace. I was able to develop it thanks to the vmnet network backend that I implemented for QEMU. You can connect to an IRC server, chat and read messages, all from the…
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The Cheapest NAS
I wanted to replace my old trusty 'router' (with an attached HDD)--that was not working as a router, but as a network drive after flashing OpenWRT onto it--I wanter to replace it with an SBC+HDD combo.
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Reverse engineering the 59-pound printer onboard the Space Shuttle
The Space Shuttle contained a bulky printer so the astronauts could receive procedures, mission plans, weather reports, crew activity plans,...
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Fixing annoying blue standby lights
A simple and free fix for those annoying over bright blue standby lights on home electronics (TV, Stereo, Set top box, etc.)
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They don't make them like that any more: the Yamaha DX7 keyboard
Nothing says ‘80s pop’ like a DX7.
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How simultaneous multithreading works under the hood
Learn the microarchitecture-level details of the processor that enable to execute two threads at the same time on a CPU core
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Building an e-ink picture frame that displays an iCloud photo album
For Christmas, I gave my parents this e-ink picture frame (built from an old e-reader) that cycles through photos from a shared iCloud photo album:
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AVX Bitwise ternary logic instruction busted
How a modern AVX instruction shares a similar design with a 1985 blitter chip, by Arnaud Carré
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SIMD-accelerated computer vision on a $2 microcontroller
An accelerated FAST feature detector for the ESP32-S3 leveraging 128-bit SIMD instructions, achieving ~2x the performance of the reference implementation.
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Building a USB SNES Controller
A few years ago on a trip to Tokyo, we took a day to explore Akihabara. We found a shop that was selling retro gaming stuff and when I saw an old SNES controller for sale I had to buy it.
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Sol-Ark manufacturer reportedly disables all Deye inverters in the US
Seemingly, at the drop of a hat the morning of Friday, Nov 15th, Deye-branded inverters across the US were intentionally bricked.
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Hacking the T2S+ Out of Fear: Get Lock-In Thermography for Free
Hacking the T2S+ v2 to work on computers, tear it down for the first time online, and play with lock-in thermography as a bonus!
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Reverse-engineering my speakers' API to get reasonable volume control
I got some fancy new speakers last week. They’re powered speakers and they have streaming service integrations built in, unlike the 35-year-old passive speakers I’m upgrading from. Overall they’re great! But they’re so loud that it’s difficult to make small volume adjustments within the range of safe volume levels for…
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Goodbye non-KISS appliances
<p>Yesterday, we gave away our ~6-year-old GE French-door refrigerator after a never-ending slog of repairs. At least the guy and his mother who came to pick it up have a side-hustle of repairing and reselling appliances. There's hope it won't end up in a landfill. He offered to sell me a 4-door Samsung. No Thanks!…
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CNC lasers for cutting and engraving
Laser cutters can injure or blind you permanently if you do not follow safety procedures! This post is an attempt to collect all of the information that I’ve gathered over the last year or so regarding budget laser cutters. There are no affiliate links on this page, I have no ties to any of the companies mentioned…
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A Better Light Source for Scanning Color Negative Film
Narrowband trichromatic (RGB) light sources are superior to broadband (white) light for scanning color negative film; there are very good reasons why all commercial film scanners use RGB. ( film scanners were using blue LEDs at least a decade before they would be widely used in consumer products! ) Scanning film with…
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Bottle Plotter
Bottle Plotter BottlePlotter.cz I have noticed that, it is quite common in group of small wine producers, that they don't use bottle la...
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Turning AirPods into a fitness tracker
A fun side project for a great cause featuring Core Motion, SwiftUI, a little help from AI, and a pair of AirPods to count 100 push-ups a day.
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Intel N100 Radxa X4 First Thoughts
The Intel N100-based Radxa x4 has taken the headlines over the last week or so, and for good reason! Does the x86 SBC live up to the hype?
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ArVid: Russians squeezed 4 hard drives into one VHS tape in the 90s
It’s a hellish time: prices for basic consumer goods are tripl e what they were last year. Your employer just paid your salary in eggs instead of money. There are daily shootouts between rival gangs. 🎵 Your love life’s DOA… 🎵
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Understanding the design of the the Super Nintendo video system
Last time, I explored the inside of the Super Nintendo cartridges . Today I am going through its video system.
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The guidance system and computer of the Minuteman III nuclear missile
The Minuteman missile was introduced in 1962 as a key part of America's nuclear deterrent. The Minuteman III missile is currently the only U...