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December 5, 2025
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Category: Hackaday

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via Hackaday: Hidden Gutter Antenna Keeps HOA Happy

The United States and a few other countries have an astounding array of homeowners’ associations…
Antenna, antenna tuner, gutter, Hackaday, hoa

via Hackaday: You Can 3D Print Yourself Some Simple Magnetic Switches

Permanent magnets aren’t typically switchable. They’re always doing their magnet thing. However, if you align…
3D printing, General, Hackaday, switch

via Hackaday: Open Source Liquid Rocket Reaches for the Sky

Since the very beginning, solid-propellants have been the cornerstone of amateur rocketry. From the little…
3D printing, General, Hackaday, model rocket, Mojave Sphinx, open source, rocketry, Space

via Hackaday: Simulating Air Flow for 3D Printing

You’ve probably heard that a 3D printer is capable of producing its own replacement parts….
3D printing, Hackaday

via Hackaday: Roll Your Own Presence Sensor

wanted an Everything Presence Lite kite but found it was always out of stock….
ESP32, General, Hackaday, Offbeat, PCB, sensor

via Hackaday: Happy Birthday to Dad, Retrocomputer Style

For those of us who lived through the early 8-bit computing revolution — the tail…
chatbot, computer, Computers, ESP32, Hackaday, nostalgia, Offbeat, Radio Shack, TRS-80, vintage

via Hackaday: Intuitive Explanation of Arithmetic, Geometric & Harmonic Mean

The simple definition of a mean is that of a numeric quantity which represents the…
arithmetic, General, Hackaday, math, Newsreel, pythagorean, Sunspots

via Hackaday: Farewell Magnetic Stripe

For decades, the magnetic stripe has been ubiquitous on everything from credit cards to tickets…
credit card, General, Hackaday, IBM, magnetic strip, Offbeat, QR code, RFID, smartphones

via Hackaday: A Field Guide to the North American Substation

Drive along nearly any major road in the United States and it won’t be long…
electrical, electricity, General, ground, Hackaday, Newsreel, power, Power Supply, substation, transformers

via Hackaday: Fighting the Scourge of “Screwdriver Mange”

We’ve all got our favorite hand tools, and while the selection criteria are usually pretty…
General, Hackaday, Offbeat, screwdriver, tools

via Hackaday: Reverse-Engineering the AMD Secure Processor Inside the CPU

On an x86 system the BIOS is the first part of the system to become…
AMD, BIOS, Computers, CPU, Hackaday, Newsreel, processors

via Hackaday: Citizen Scientists Spot Super Fast Moving Object in NASA Data

When you were five, you probably spotted your best friend running at “a million miles…
Astronomy, brown dwarf, citizen scientist, citizen scientists, Hackaday, infrared, Milky Way, NASA, Space, supernova, Wide-field Infrared Explorer

via Hackaday: Rebuilding The First Digital Personal Computer

When thinking of the first PCs, most of us might imagine something like the Apple…
Computers, Hackaday, History, Kenbak-1, PCB

via Hackaday: A Modern Take on an Old Language

Some old computer languages are destined to never die. They do, however, evolve. For example,…
APL, arrays, Computers, computing, fortran, Hackaday, History, IBM, IBM PC, language

via Hackaday: Your Data in the Cloud

I try not to go off on security rants in the newsletter, but this week…
cloud computing, Computers, cybersecurity, data, Hackaday, News, security

via Hackaday: Cost-Optimized Raspberry Pi 5 Released With 2 GB RAM and D0 Stepping

When the Raspberry Pi 5 SBC was released last year, it came in 4 and…
Computers, Hackaday, Raspberry Pi

via Hackaday: WOW! It Wasn’t Aliens After All!

There may not be many radio astronomy printouts that have achieved universal fame, but the…
Arecibo, Astronomy, Follow-up, Hackaday, magnetar, neutron star, Newsreel, Ohio State University, radio astronomy, SETI, Space, University of Puerto Rico, WOW Signal

via Hackaday: Unusual Tool Gets an Unusual Repair

In today’s value-engineered world, getting a decade of service out of a cordless tool is…
3D printing, Black and Decker, gyrodriver, Hackaday, Offbeat

via Hackaday: Handheld Oscilloscope Meter Reviewed

We live in a time where there’s virtually no excuse not to have some kind…
Digital, General, Hackaday, Handheld, microcontroller, Newsreel, oscilloscope, usb-c

via Hackaday: Historical Microsoft and Apple Artifacts Among First Christie’s Auction of Living Computers Museum

Recently the Christie’s auction house released the list of items that would be going up…
Apple, Apple computers, Computers, Gemini, Hackaday, History, Microsoft, NASA, Washington State

via Hackaday: Lunar Lander Game Asks You to Write a Simple Autopilot

Everyone likes a good lunar landing simulator, and wrote a fun take on…
Computers, game, Hackaday, moon lander, Offbeat, simulator

via Hackaday: Open Source Residential Energy Storage

Battery news typically covers the latest, greatest laboratory or industry breakthroughs to push modern devices…
3D printing, battery, energy, FreeCAD, Hackaday, open source, power, solar panels, wind turbine

via Hackaday: Entangled Photons Maintained Using Existing Fiber Under NYC’s Streets

Entangled photons are an ideal choice for large-scale networks employing quantum encryption or similar, as…
encryption, fiber optic, Hackaday, Offbeat, photons, quantum physics, Qunnect, wavelength

via Hackaday: The Sunchronizer Keeps Your Solar Panel Aligned

In the past few years, the price-per-watt for solar panels has dropped dramatically. This has…
General, Hackaday, solar panels, SUN

via Hackaday: Ryobi Battery Pack Gives Up Its Secrets Before Giving Up the Ghost

Remember when dead batteries were something you’d just toss in the trash? Those days are…
battery, Hackaday, Offbeat, PCB, Ryobi
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