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A simple 11.2 GHz radio telescope (Hardware) (2020)
Abstract : In this post we describe the construction of a small amateur radio telescope operating at
Topics /
Hardware & Electronics
The most popular blog posts about hardware & electronics on Hacker News. 4,805 posts.
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Pieca: A Raspberry Pi Camera System for Leica M Mount Lenses
Taking pictures and geeking out over cameras was one of my first hobbies starting with an old Olympus point and shoot, I then moved up to a DSLR upgrading as new and exciting technology became acce…
3634
C64 Theremin
The Theremin is one of the earliest electronic instruments. It's played by moving one's hands in front of two antennas: One controls pitch and the other controls volume.
3635
The Intel 386 processor die: the clock circuit
Processors are driven by a clock, which controls the timing of each step inside the chip. In this blog post, I'll examine the clock-generati...
3636
“It's done in hardware so it's cheap” (2012)
This is one of these things that look very obvious to me, to the point where it seems not worth discussing. However, I've heard the idea that "hardware magically makes things cheap" from several PhDs over the years. So apparently, if you aren't into hardware, it's not obvious at all.
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SSD as Long Term Storage Testing
2022 September 10 What is the best media for long term storage is a question that I read frequently from online forums. First and foremost, as far as I’m aware there is no real “set it and forget it” long term storage. In this digital age, data needs to be validated regularly and cycled to a new media every 5-10 years…
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The Tapplock IoT padlock has multiple security vulnerabilities
The Sophos Blog
3640
18 Months with a Framework 13
I've been using a Framework 13 laptop as my main/only computer for a little over 18 months now.
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Lithium Battery Pack Design for Boosted's Electric Skateboard
As with our previous posts, you can skim the photos and captions for a quick read or dive into the text for more details. The power capability of Boosted's drivetrain would be useless without a...
3643
The Raspberry Pi as a Stratum-1 NTP Server
NTP on a Raspberry-Pi - documents configuring a Raspberry Pi for headless operation, configuring NTP for remote monitoring, adding a GPS/PSS device (two discussed), and how well NTP performs in WAN-only, LAN, and PPS configurations.
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A brief, incomplete, and mostly wrong history of robotics
(An homage to one of my favorite pieces on the internet: A Brief, Incomplete, and Mostly Wrong History of Programming Languages)
3645
An Introduction to CubeSats
An introduction that answers the questions what are cubesats, why they are so popular, what are their main subststems, and how does thier future look?
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Quartz crystals
(This is an adapted version of part of an article I wrote for the Dutch amateur radio magazine Electron , August 2016.)
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How to run an Arduino clone on a 9V battery for weeks or even months
About a year ago, I started building wireless sensors that needed to run on a battery. I quickly found out however that this wasn’t going to be easy: A battery would only last for a few days,…
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OpenTitan Shipping in Production
Google has worked with the open source communities to build OpenTitan, the first open source silicon Root of Trust (RoT).
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Refurb Weekend: Canon Cat
It's the Memorial Day holiday weekend and it's time for a little deferred maintenance, especially on those machines I intend to work on more...
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Real-time CO2 monitoring without batteries or external power
< (From left) Master's Student Gyurim Jang, Professor Kyeongha Kwon > KAIST (President Kwang ...
3652
New paint atomizer with over 95% coating efficiency
Toyota Motor Corporation (Toyota) has developed a new type of paint atomizer (airless paint atomizer) that uses static electricity instead of air, to replace the conventional air paint atomizers used in the vehicle body painting process. The newly developed airless painter, the first of its kind in the world, achieves…
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Upgrading my old Chumby 8 Linux kernel
As I mentioned in my last post, I spent a good chunk of my spare time over the past 6 months working on a project I’ve been thinking about for over a decade. I bought a Chumby 8 in 2011. It’s an 8″ touchscreen device powered by the Marvell PXA166 processor. It is essentially a souped-up digital picture frame with…
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A floppy disk MIDI boombox: The Yamaha MDP-10
Longtime readers of Nicole Express might know that I dabble in playing the organ. But sometimes I want to play with sounds that don’t have the organ’s defini...
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Automatically Light Up a Sign When Your Webcam Is in Use
At the beginning of COVID lockdown and multiple people working from home it was obvious there was a need to let others know when I'm in a meeting or on a live webcam. So naturally it took me one year to finally do something about it. Now I'm here to share what I learned along the way.
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The Plum-O-Meter: Weighing Plums Using 3D Touch in Swift
Here at FlexMonkey Towers, the ever beautiful Mrs FlexMonkey and I love to spend our Sunday mornings luxuriating in bed drinking Mimosa...
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Cores in space: The core memory module from a 1980 Spacelab computer
Spacelab was a reusable laboratory that could be carried in the Space Shuttle's cargo bay, providing lab space for astronauts and experiment...
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Building a Frankenstein 64
👶 From when Mosaic took over Gopher. 🏢 VP of Engineering @ Cloudflare 🕹️ Slightly addicted to retrocomputing 🔍 Hit Ctrl-K to Search
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World Domination Using Arduinos and Websockets
Arduino Websocket Client Arduino Pusher Client Pusher – Real Time Push Notifications Follow Me On Twitter: @kevinrohling If you don’t have your very own Arduino yet you should get one. …
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The Lost Atomic Update on Loongson CPU
杰哥的{教学，运维，编程，调板子}小笔记