Open Hardware/Modding: RISC-V, Arduino, and More
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Hackaday ☛ Modular Magnetic LED Matrix
[bitluni] seems rather fond of soldering lots of LEDs, and fortunately for us the result is always interesting eye candy. The latest iteration of this venture features 8 mm WS2812D-F8 addressable LEDs, offering a significant simplification in electronics and the potential for much brighter displays.
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Hackaday ☛ A RISC-V LISP Compiler…Written In Lisp
Ah, Lisp, the archaic language that just keeps on giving. You either love or hate it, but you’ll never stop it. [David Johnson-Davies] is clearly in the love it camp and, to that end, has produced a fair number of tools wedging this language into all kinds of nooks and crannies. The particular nook in question is the RISC-V ISA, with their Lisp-to-RISC-V compiler. This project leads on from their RISC-V assembler by allowing a Lisp function to be compiled directly to assembly and then deployed as callable, provided you stick to the supported language subset, that is!
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Hackaday ☛ What Actually Causes Warping In 3D Prints?
The 3D printing process is cool, but it’s also really annoying at times. Specifically, when you want to get a part printed, and no matter how you orientate things, what adhesion aids you use or what slicer settings you tweak, it just won’t print right. [David Malawey] has been thinking a little about the problem of the edges of wide prints tending to curl upwards, and we believe they may be on to something.
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Ubuntu ☛ Canonical at RISC-V Summit North America 2024
The RISC-V Summit North America is a premier annual event that brings together the global RISC-V community – including technical, industry, domain, ecosystem and special interest groups who define the architecture’s specifications.
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Olimex ☛ What is the difference between ARM-USB-TINY, ARM-USB-TINY-H, ARM-USB-OCD, ARM-USB-OCD-H and ARM-USB-OCD-HL
We have number of OpenOCD JTAG solutions and this sometimes confuse customers when they try to select the proper one, so the purpose of this post is to explain the differences and help select the right one for their applications.
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Arduino ☛ This device prevents garage door security breaches
That functionality requires two Arduino Nano Every boards. The first goes in the garage and connects to the garage door opener so it can close to the door. It detects a closed door using a pair of microswitches. The second Arduino is for the indoor dashboard, which provides notifications and control buttons. SébastienL42 designed that dashboard to fit into a picture frame and it looks really nice.
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Doc Searls ☛ What goes in these structured wiring cabinets?
The installed cables are:
• Blue CAT-6a Ethernet cables go to outlets (RJ-45 jacks) in four rooms. Internet will come from the city’s new fiber optic system.
• Coaxial cables go to four possible TV locations. They will carry signals from the over-the-air TV antenna that will go on a pole outside. We will not have cable TV or Internet service.Soon to be installed are:
• A coaxial cable from the TV antenna.
• A fiber cable from the street. -
Joel Chrono ☛ An old computer for a kid
A family friend's kid asked me to take a look at a old computer he got as a gift from an uncle, so I decided to help, secretly hoping he learns computing is pretty cool.