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It’s Ethernet, From An SPI Interface
Over the years as microcontrollers have become fast enough to do the heavy lifting, we have become used to 10 megabit Ethernet being bit-banged from interfaces it was never meant to emerge from. We...
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Send this FPV Bot into the Crawlspace to Do Your Dirty Work
The least pleasant space in most houses is likely to be the space below it. Basements tend to be dank, dusty, and full of too many things that have too many legs. And even worse than the full basement...
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Adapter Board Expands the Pi Zero
The standard Raspberry Pi computers have been in short supply for a while now, so much so that people are going to great lengths to find replacements. Whether it’s migrating to alternative single-board...
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All About Cats, and What Ethernet Classifications Mean Beyond ‘Bigger Number...
Although it probably feels like forever to many of us since Category 5 Ethernet cabling became prevalent, now that 2.5 and even 5 Gbit Ethernet has trickled into the mainstream, a pertinent question...
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Ethernet For Hackers: The Very Basics
Ethernet is ubiquitous, fast, and simple. You only need two diffpairs (four wires) to establish a 100Mbit link, the hardware is everywhere, you can do Ethernet over long distances easily, and tons of...
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Underwater Sensor Takes Single Pair Ethernet for a Dip
The 10BASE-T1 Ethernet standard is also known as ‘single pair Ethernet’ (SPE), as it’s most defining feature is the ability to work over a single pair of conductors. Being fairly new, it offers a lot...
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Ethernet For Hackers: Equipment Exploration
Last time, we talked about the surface-level details of Ethernet. They are fundamental to know for Ethernet hacking, but they’re also easy to pick up from bits and pieces online, or just from wiring up...
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Restoring Starlink’s Missing Ethernet Ports
Internet connectivity in remote areas can be a challenge, but recently SpaceX’s Starlink has emerged as a viable solution for many spots on the globe — including the Ukrainian frontlines....
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Ethernet For Hackers: Transformers, MACs And PHYs
We’ve talked about Ethernet basics, and we’ve talked about equipment you will find with Ethernet. However, that’s obviously not all – you also need to know how to add Ethernet to your board and to your...
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How DEC’s LANBridge 100 Gave Ethernet a Fighting Chance
Alan Kirby (left) and Mark Kempf with the LANBridge 100, serial number 0001. (Credit: Alan Kirby) When Ethernet was originally envisioned, it would use a common, shared medium (the ‘Ether’ part), with...
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Homebrew Network Card with No CPU
A modern normal network card will have onboard an Ethernet controller which, of course, is a pre-programmed microcontroller. Not only does it do the things required to keep a computer on the network,...
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Manta: An Open On-FPGA Debug Interface
We always can use more tools for FPGA debugging, and the Manta project by [Fischer Moseley] delivers without a shadow of a doubt. Manta lets you add a debug and data transfer channel between your...
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A Really Low Level Guide To Doing Ethernet on an FPGA
With so much of our day-to-day networking done wirelessly these days, it can be easy to forget about Ethernet. But it’s a useful standard and can be a great way to add a reliable high-throughput...
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Ethernet History: Why Do We Have Different Frame Types?
Although Ethernet is generally considered to be a settled matter, its history was anything but peaceful, with its standardization process (under Project 802) leaving its traces to this very day. This...
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DEC’s LAN Bridge 100: The Invention of the Network Bridge
DEC’s LAN Bridge 100 was a major milestone in the history of Ethernet which made it a viable option for the ever-growing LANs of yesteryear and today. Its history is also the topic of a recent video by...
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Ferrites Versus Ethernet in the Ham Shack
For as useful as computers are in the modern ham shack, they also tend to be a strong source of unwanted radio frequency interference. Common wisdom says applying a few ferrite beads to things like...
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Ethernet From First Principles
For someone programming in a high-level language like Python, or even for people who interact primarily with their operating system and the software running on it, it can seem like the computer...
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DIY Pipe Inspector Goes Where No Bot Has Gone Before
If you think your job sucks, be grateful you’re not this homebrew sewer inspection robot. Before anyone gets upset, yes we know what [Stargate System] built here isn’t a robot at all; it’s more of a...
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The Twisted History of Ethernet on Twisted Pair Wiring
We all take Ethernet and its ubiquitous RJ-45 connector for granted these days. But Ethernet didn’t start with twisted pair cable. [Mark] and [Ben] at The Serial Port YouTube channel are taking a deep...
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PoE-powered GPIB Adapter with Ethernet and USB-C Support
In the world of (expensive) lab test equipment the GPIB (general purpose interface bus) connection is hard to avoid if you want any kind of automation, but nobody likes wrangling with the bulky cables...
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