понедельник, 23 марта 2026 г.

The Smithsonian’s Women and Music of Social Change exhibit closed last year but you can still explore digitally and listen to the playlist on Spotify! From tradition breakers to industry professionals women have been using music to shape cultural change throughout history.

From our earliest musical encounters to the formation of complex social identities, the American musical landscape wouldn’t be what it is today without the countless contributions of women changemakers, groundbreakers, and tradition-bearers. Women’s leadership in music and social change is central to the American story. Music HerStory explores these contributions through unique media collections from across the Smithsonian.

Explore here!



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воскресенье, 22 марта 2026 г.

ADAFRUIT WEEKLY EDITORIAL ROUND-UP


We’ve got so much happening here at Adafruit that it’s not always easy to keep up! Don’t fret, we’ve got you covered. Each week we’ll be posting a handy round-up of what we’ve been up to, ranging from learn guides to blog articles, videos, and more.


Ka-BOOM! AS3935 lightning sensor can detect storms before they hit


Tree Branch Wall Lamp with Sound Reactive Lights


Deep Dive w/Scott: CircuitPython on nRF54LM20A




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Epoxy resin river tables can be stunning works of art.  Adding NeoPixels and a Circuit Playground give this table an extra special dimension — its soft pulsing glow fills a room with beauty and makes every meal into a masterpiece.

This is a DIY build tutorial for making a resin river table that’s lit from underneath by LED rainbow lights. Do some woodworking with live edge walnut and epoxy resin, and learn techniques for soldering together the NeoPixels and electronics to make it glow.

Build tutorial: https://learn.adafruit.com/glowing-neopixel-resin-river-table




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hierarchical FPGA utilization map for the BIO implementation on a Digilent Arty (XC7A100T), total design: 41,757 cells. the BIO block (bio_apb, highlighted in magenta outline) consumes 14,597 cells... roughly 35% of the design. inside, four PicoRV32 cores (mach[0] through mach[3]) range from 1,698 to 1,937 leaf cells each... compact enough that all four together barely exceed a single PIO state machine's ~5,000 cell footprint. the host CPU (VexRiscvAxi4) sits at 8,017 cells including caches, with the remaining area eaten by AXI crossbars, bus adapters, and bridge logic. compare this to the PIO utilization map shown earlier in the post, where the PIO alone consumed 39,087 cells and dominated the floorplan... the BIO achieves a richer RV32E instruction set in less than 40% of the PIO's area. the visual tells the RISC-vs-CISC story immediately: four full CPU cores plus bus infrastructure, and you're still smaller than nine custom instructions with barrel shifters.

Side-by-side FPGA floorplan comparison showing the BIO coprocessor in green using roughly half the area of the PIO coprocessor shown in magenta, both compiled to an Artix 7-series FPGA

bunnie huang just dropped a deep-dive on the BIO, the I/O coprocessor he designed for the Baochip-1x, a mostly open source 22nm SoC, and it’s a banger!

tl;dr …. bunnie wanted something like the Raspberry Pi’s PIO but ran into problems. He built a full PIO clone for an FPGA and discovered it ate more silicon than the RISC-V CPU itself. The critical path was twice as slow too. Each PIO instruction tries to do everything at once, which means barrel shifters everywhere and combinational paths from hell.

So he went the other direction. The BIO uses four tiny RISC-V cores (PicoRV32, RV32E) with a trick from his PhD work… some registers in the file are actually queues with blocking semantics. So, when you try to read from an empty FIFO register the CPU halts until data shows up. Ditto when trying to write to a full one. There’s also a “snap to quantum” register that pauses execution until a clock tick, so you get deterministic timing without cycle-counting.

The result is half the area of a PIO, 4x the clock rate in ASIC, and you can write code in C (via Zig’s clang). bunnie’s post walks through DMA, SPI bitbang, and WS2812/NeoPixel LED examples. The whole LED demo with fixed-point math fits in 25% of one core’s 4 kiB memory.

The PIO, while kind of neat as an abstract mental concept, really bugged me as an implementer. Barrel shifters are expensive in hardware.”

In classic bunnie fashion, the final implementation is open source & patent-free. If you want to play with it, the low-cost Dabao dev board is on Crowd Supply.

OK so what does this mean for normal humans?
If you’ve ever used a Raspberry Pi Pico, you might’ve heard of PIO. It’s the part that handles tricky timing stuff like talking to LEDs or SPI devices. bunnie built an inexpensive, open source, miniature version of that idea using standard RISC-V cores instead of a custom instruction set. It’s smaller, faster on silicon, you can program it in C instead of a specialized assembly language, and it’s completely open source. If you’re into hardware design or just want to see what’s possible when someone rethinks a problem from scratch, go read the full post @ bunnie’s blog – bio-the-bao-i-o-coprocessor/.



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white house national policy framework for artificial intelligence cover page, dark navy background with white serif text reading "national policy framework" above the presidential seal and "artificial intelligence" below it.

A couple weeks ago we covered the White House’s national cyber strategy with its six pages, six pillars, and AI AI AI agentic everything. So, next up the administration released a national policy framework for artificial intelligence (PDF), four pages of legislative recommendations they want Congress to turn into law this year.

There are seven sections in the framework doc, covering child safety, energy/infrastructure, intellectual property, free speech, innovation, workforce, and federal preemption of state laws. The child safety and workforce sections are what you’d expect. The rest is where it gets…interesting.

Copyright and training data:

“the Administration believes that training of AI models on copyrighted material does not violate copyright laws, it acknowledges arguments to the contrary exist and therefore supports allowing the Courts to resolve this issue.”

They’re telling Congress to stay out of the copyright question and let the courts sort it out. They also want ways for rights holders to collectively negotiate with AI companies without antitrust liability, but also say that legislation “should not address when or whether such licensing is required.” So… optional licensing that nobody has to use?

On state regulation:

“States should not be permitted to regulate AI development, because it is an inherently interstate phenomenon with key foreign policy and national security implications.”

“States should not be permitted to penalize AI developers for a third party’s unlawful conduct involving their models.”

One is liability shield for model developers. If someone uses an AI model to do something illegal, the company that built the model would not be held responsible under state law. Colorado, California, Utah, and Texas have already passed their own AI rules, this doc aims to override all that and says that congress should not create any new federal org to regulate AI.

Instead, the White House wants regulators like the FTC, FDA, FAA, etc. to handle AI applications in their own sectors, and use industry-led standards. Sandboxes for AI applications, for example. Federal datasets to be opened up in “AI-ready formats” for training.

Fifty Republicans sent a letter to the administration in March 2026, calling the state regulation “an effort to prevent the passage of measures holding the tech industry accountable.” What’s next? This may or may not become law before the midterms, if a tanked economy, and job loss are blamed on AI, this might be a wedge issue.



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суббота, 21 марта 2026 г.

Happy World Puppetry Day! From our learn system to our Circuit Playground video series, we show puppets love!

Read more about the history of the holiday, as well as specific details for this year’s celebrations from Puppeteers of America.



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пятница, 20 марта 2026 г.

wpnsmith shared this project on Instructables! With more details here https://github.com/jervine/rpi-temp-humid-monitor

Over the past summer, my vacation home had a small water leak for three months, and I realized that had I been measuring the humidity in the effected area, I’d have
seen it go to 100% for a long time and I could have dispatched someone to fix the small problem before it became a big one.
And since I’ve been playing with Raspberry Pi computers for a while now, and saw an inexpensive temperature/humidity sensor on AdaFruit, I had all the pieces I needed
to implement an inexpensive network-connected monitor.
The Bill Of Materials (BOM):
1) Raspberry Pi Model B
2) Case
3) SD Card
4) Temperature/Humidity sensor
5 ) Power Supply (I use PoE splitters, but any 5V 1A Micro-USB supply will work)

Learn more!



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