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New
The latest blog posts to take off on Hacker News. 298 posts.
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Raspberry Pi microSD card performance comparison
Note: I also posted a separate review of some A2 'Application Performance' class cards, see this post: A2-class microSD cards offer no better performance for the Raspberry Pi. As a part-time tinkerer and full-time developer, I have been fascinated by single board computers (SBCs) since the first Raspberry Pi was…
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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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PCI Express on the Raspberry Pi 4
After the daily dose of Hackaday - and with an idea that seemed very doable, and actually, with some improvements can be easily reproducible.
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California Earthquakes Disrupted HF Propagation on West Coast
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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Bitcoin mining on an Apollo Guidance Computer
We've been restoring an Apollo Guidance Computer 1 . Now that we have the world's only working AGC, I decided to write some code for it. Try...
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Running an eInk Display with Elixir, Scenic and Nerves
So I've been curious about what kinds of displays you can connect to the Pi-series single board computers for a while. I happened to accidentally order a few. Among others an eInk display. I ordered the PaPiRus ePaper. It ended up being dead on arrival and then out of stock so I received an Inky to replace it. Fair…
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Breaking max efficiency of solar cells by activating 2 electrons with 1 photon
Researchers at MIT and Princeton have found a way to increase the output of silicon solar cells by allowing a single photon to release two electrons in the silicon.
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How to design a proper USB-C™ power sink (hint, not the way Raspberry Pi 4 did it)
This issue came up recently for a high profile new gadget that has made the transition from Micro-USB to USB-C in its latest version, the…
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Raspberry Pi 4 not working with some chargers
The blog of Tyler Ward (aka scorpia)2019401 points300 commentscited by 3Hardware & Electronics details
The new pi has been released and it has a USB Type-C connector for power however people are finding some chargers are not working with it (notably macbook chargers). Some have speculated that this is due to a manufacturer limitation on the power supplies however it is actually due to the incorrect detection circuitry…
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Software woven into wire: Core rope and the Apollo Guidance Computer
Onboard the Apollo spacecraft, the revolutionary Apollo Guidance Computer helped navigate to the Moon and land on its surface. One of the f...
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Hacking Digital Calipers
A collaborative AI workspace, built on your company context. Build and orchestrate agents right alongside your team's projects, meetings, and connected apps.
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Running Games on a MacBook Pro with an EGPU
How we got here After Apple released its (soon-to-be) previous generation Mac Pro, it probably didn't take long for them to realize they had a trash can…
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No Strong Opposition to 144-146 MHz Reallocation Proposal at CEPT Meeting
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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Rethinking the Commodore 64 Memory Map (2018)
I've had my head down, programming away on C64 OS, and been making some great progress. I've tweeted a few things out, some of which are revealing of things I've either never talked about here or even seem to contradict what I've said here. So I'd like to take a breather and talk about some of these developments.
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Vintage video game cartridges with built-in modems
A lot of contemporary video game players take online communications for granted—after all, online services have been a standard feature in consoles for nearly fifteen years at this point1. However, before the ubiquity of the internet there was a time when some clever cartridges let gamers run up to the...
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VESA Publishes DisplayPort 2.0 Video Standard
DisplayPort 2.0 enables up to 3X increase in video bandwidth performance (max payload of 77.37 Gbps); new built-in features enable improved user experience, greater flexibility and improved power efficiency SAN JOSE, Calif. – June 26, 2019 – The Video Electronics Standards Association (VESA®) today announced that it…
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Raspberry Pi on Raspberry Pi
Question: Is the Raspberry Pi 4 any good? Answer: It’s good enough to run its own launch website with tens of millions of visitors.
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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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DIY Amps: A Roadmap for Beginners (2017)
So you have decided to take the DIY dive and start building your own headphone amplifiers! If you stick with it, you are going to learn a lot about audio and electronics theory and develop several …
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FPGAs Have the Wrong Abstraction for Computing
Verilog is the de facto abstraction for programming today’s FPGAs. RTL programming is fine if you want to use FPGAs for their traditional purpose as circuit emulators, but it’s not the right thing for the new view of FPGAs as general-purpose computational accelerators.
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This TRS-80
A first-hand story about the TRS-80 Model 100 and journalism
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Hacking Water
From water insecurity to offgrid, solar pumped, gravity flow 1000 gallons of running water.
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Performance Speed Limits
A laundry list of speed limits that your code can’t exceed.