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EMF Camp has recently taken place in the UK. This, every two year, festival/hacker camp sees around 4000 people descend on the grounds of Eastnor Castle UK. It’s an amazing event with all manner of talks, art installations, workshops and indeed partying in Null Sector.

Amongst all this the fabulous Chia, Kliment and Carston pulled together an amazing E‑Sport style FreeCAD speed run challenge in the hardware hacking tent.

This event saw a group of people get together and compete in 3 ten minute rounds each having a unique small FreeCAD project challenge. The idea was that people had to replicate a FreeCAD project from a technical drawing. Round one was a small box with radial fillets on all external and internal edges, round two was a “hexpansion” which is the term for a hexagonal add on for the official EMF badge and the final round was to replicate a Club Mate bottle!

See details in the post here.

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ESP32-S31 now in mass production and available for purchase

Espressif Systems (SSE: 688018) announces that its ESP32-S31 has entered mass production and is now available for purchase.

Designed for next-generation AIoT applications, ESP32-S31 is a high-performance dual-core RISC-V SoC with comprehensive wireless connectivity, making it ideal for smart home hubs, smart speakers, edge AI devices, industrial automation, and more.

ESP32-S31 features a dual-core 32-bit RISC-V CPU running at up to 320 MHz, with one core supporting a 128-bit data path and SIMD instruction set for accelerated computing performance. The chip also integrates a 40 MHz low-power coprocessor, 512 KB of on-chip SRAM, support for high-speed 250 MHz DDR PSRAM expansion, and up to 60 GPIOs.

ESP32-S31 integrates WiFi 6 (2.4 GHz), Bluetooth 5.4 (including LE Audio and Classic BR/EDR), IEEE 802.15.4 (Zigbee and Thread), and a Gigabit Ethernet MAC. It also supports Matter over both WiFi and Thread.

To support rich human-machine interaction, ESP32-S31 provides interfaces for DVP cameras, multiple LCD display types, and up to 14 capacitive touch channels. Dedicated hardware accelerators (including a JPEG encoder/decoder and a 2D graphics accelerator) help improve multimedia performance, while dual I2S controllers enable hardware-level Bluetooth audio synchronization.

Read more in the release announcement and product page.

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MACROPAD Pi

See the full project guide!

A simple 3 button macro pad shared by Arnov Sharma on Instructables:

We’re utilizing PICO as an HID device, adding three mechanical switches to it and an OLED screen to perform COPY PASTE and erase commands.

The idea here was to create a super small macropad that I could use while using Fusion360 and other software that required frequent use of the COPY, PASTE, and DELETE commands. We have also incorporated an OLED screen to provide feedback on which command has been selected

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Using the DGX Spark as a daily driver computer

Daniel Lawrence Lu bought an NVIDIA DGX Spark.

It’s actually quite a competent general purpose computer while being super tiny and power efficient. It basically just has an ARM CPU, a decent NVIDIA GPU (with the same number of CUDA cores as the RTX 5070), 128 GB of unified memory, and a 4 TB SSD.

The DGX Spark runs “DGX OS” but it is in fact just plain old Ubuntu 24.04 with some additions. The CPU has a Geekbench 6 score roughly on par with an M3 Pro 14 core and an AMD Ryzen 9 7950X: 2983 single core and 18183 multi core.

Can it run Crysis? It turns out, it can totally run Crysis. The DGX Spark is quite decent at gaming in fact.

So anyway the whole thing is great (price tag notwithstanding):

it handles my “main PC” use cases, such as light occasional gaming, CAD needs (Rhino 3D), and photography workflow

generates LLM tokens decently for simple coding tasks and automation

power-efficient and quiet

looks nice

whatever doesn’t run out of the box, I can just get AI agents to get it working

See the details in the evaluation here.

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Weasley Clock

The various magic-tech objects in the Harry Potter books + movies are often ingenious and imaginative (omnioculars, Dumbledore’s Pensieve). Few stand out in my mind as vividly as the Weasley Clock. This build from maker lakeprojects turned out great (cool to see it done in German, too!). Via Instructables:

I can not remember when exactly, but at one point I thought it would be very cool to have a proper working Weasley. It sholuld be a gift for my mom, who loves Harry Potter and is a huge fan of Molly Weasley.

So I designed and produced this clock, which can display the location of 5 people, ever via GPS tracking or by using an app on each users phone.

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Turning a Fender Frontman 10G into a Bluetooth Speaker

Download the files and learn more

zx82net turned an old amp cabinet into a bluetooth speaker and shared the build on Instructables. We love zx82net’s focus on adapting for what you have on hand!

This started with a $4 purchase: an empty Fender 10G practice amp cabinet, sitting around looking for a second life. It’s now a great sounding Bluetooth speaker with controls to easily adjust it for any placement, indoors or outdoors, against a wall or in the middle of a room. It runs for hours off the internal rechargeable battery and charges with UCB-C. It’ll make a great addition to any summer garden party.

I’ll describe this build in detail, but also explain how to adapt the design to use whatever cabinet and drivers you have to hand.

Learn how to make a Bluetooth speaker with an ESP32 Feather in the Adafruit Learning System with the Ruiz Brothers and Liz Clark.

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воскресенье, 26 июля 2026 г.

NASA Explains The Science Behind ‘Project Hail Mary’

Unknown июля 26, 2026 0

NASA separates the science facts from the science fiction in Project Hail Mary.

In the science-fiction novel and movie “Project Hail Mary,” the story revolves around the rigors of an astronaut working and surviving during a yearslong mission, the power of deep-space communications, the search for life beyond Earth, and nearby star systems that actually exist — Tau Ceti and 40 Eridani A.

Let NASA shed some light: Explore the resources below to learn the science facts fueling the science fiction.

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A computer mouse controlled entirely by your tongue

Unknown июля 26, 2026 0

Augmental introduced two new accessibility products

A lot of the gadgets that get promoted at CES never make it past the concept stage so it’s cool to see this mouth mouse hit the market. Introduced by Augmental at CES 2024, the MouthPad is like a retainer that gives you full cursor control with your tongue. The company also showcased a wearable pendant that can dictate your voice from a whisper. Learn more from DigitalTrends:

The MouthPad is custom-made for each user and fits over the upper teeth like a slim retainer. It features a pressure-sensitive trackpad that rests on the palate and, combined with head tracking, can be used to move a cursor, click, and swipe. Every gesture is customizable through a companion app. Augmental says more than 100 people with mobility challenges already rely on it day-to-day, with some using it for up to 16 hours each day.

Learn More!

and more from Augmental!

We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!

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Writing the English Alphabet in Cat Font

Unknown июля 26, 2026 0

Japanese Calligrapher Takumi writes the English Alphabet in cats and I’m already imagining sending out a couple post cards written in cats.

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суббота, 25 июля 2026 г.

Backyard Squirrel Box With Camera

Unknown июля 25, 2026 0

image via Hey Jude in Living, Instructables

Interacting with local nature can be very fun. Over on Instructables Hey Jude in Living put together a build a nice little home for squirrels that also serves as a squirrel observation opportunity:

So, dear remaining readers, as someone who is also up for some squirrel shenanigans, welcome, and this Instructable was a fun way to entice squirrels to nest. I have not got there just yet, but signals look promising, so I remain hopeful. It should also be said, perhaps do not do this if you are worried about squirrels running amuck in your attic or suchlike, and indeed, I give a freestanding variation on this later on. They are basically very entertaining rats with more fluff, so perhaps don’t encourage them to set up home near where you might regret it.

This guide is more where I got to in making a place that will invite squirrels, whilst also enabling filming, and indeed, making the film gear ‘squirrel proof’ (ie protecting cameras and cables from sharp teeth, and a tendency for squirrels to wanna gnaw stuff at random!!).

This project remind us of the IoT Bird Feeder project in the Adafruit Learning System created by the Ruiz Brothers and Liz Clark – put down the binoculars and watch the birds on your feeder from anywhere in the world with this project.

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пятница, 24 июля 2026 г.

Subscribe to the Adafruit Youtube channel! #Youtube #AdafruitLearnSystem

Unknown июля 24, 2026 0

Are you subscribed to the Adafruit Youtube channel? If you’re not already subscribed, click here! http://adafru.it/subscribe . It’s a free and easy way to keep up with our newest episodes. Here’s some of what we’re up to.

Electronics Show and Tell Wednesdays 7:30pm

Electronics show and tell every Wednesday at 7:30pm ET.

Adafruit Ask an Engineer LIVE 8pm Wednesday!

Every Wednesday night at 8pm ET join us for our weekly live video & chatroom! Visit http://adafruit.com/ask for more info. You can ask anything about electronics, kits at Adafruit or just stop in to meet other makers who are building cool things!

3D Hangouts – Thursdays

Hang out with Noe & Pedro Ruiz every week and discover 3D printing! Get your 3D news, projects, design tutorials, shop talk and more each week..

New Products – Updated Fridays

Each week Ladyada shows the newest great electronics at Adafruit!

Live from the desk of Ladyada

Join Ladyada streaming live for circuit board layout design, code writing, surface mount soldering and more fresh engineering and even some gaming! If Ladyada’s working on it, you’ll find it here first.

Chip Shortage

Chip Shortage includes videos about the ongoing chip shortage in the electronics industry. Adafruit founder Ladyada discusses the current state and highlights products that are hard to get or possibly “unobtainium”.

John Park’s Workshop

Project builds, hacks, and mods from John Park’s Workshop!

Advanced Manufacturing: Made in NYC by Adafruit!

This playlist highlights Adafruit manufacturing right here in NYC!

And so much more!

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PI-CAM-IR-A

Unknown июля 24, 2026 0

PI-CAM-IR-A is a custom infrared camera inside a 1950s Kodak Duoflex II, via beachKilla on reddit:

Build List:

Pi Zero 2 W

Waveshare 3.5″ Touchscreen

IMX219 No-IR

1950’s Kodak Duraflex II

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четверг, 23 июля 2026 г.

Modular Space Ship/Sci-Fi Corridor Wall Set #3DThursday #3DPrinting

Unknown июля 23, 2026 0

Shared by cale.lebl (BellForged) on MakerWorld:

A modular sci-fi terrain wall set for space-themed tabletop gaming and dioramas. Circular portals fit 20mm and 40mm inserts. Compatible with any OpenForge terrain. Designed for anything sci-fi or space-themed.

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Articulated Spider – Print-in-Place Halloween Decoration #3DThursday #3DPrinting

Unknown июля 23, 2026 0

Shared by Lucky 13 Toys on MakerWorld:

A fully articulated spooky spider that can dangle from a web of filament. Print-in-place, no assembly required. Includes a 3MF with all parts, plus optional separate-eye printing (no MMU/AMS needed) for a two-color look. Test-fit one leg set before committing to the full print.

Download the files and learn more

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среда, 22 июля 2026 г.

Tech note: making your own V-I plots at home

Michał Zalewski on the lcamtuf’s thing blog says when working on the book, The Secret Life of Circuits, he wanted to keep the artwork real.

My beef with the diagrams in popular electronics textbooks and online tutorials is that most of them are fake. At best, they’re retraced from ancient texts; at worst, they’re sketched from memory and can be charitably described as “inspired by true events”.

The Secret Life of Circuits contains about 290 original illustrations and does its best to avoid such shenanigans. I painstakingly gathered real data for everything from quartz crystal frequency response, to battery discharge curves, to signal reflections in a 100 ft run of coax cable strewn around the workshop, to the behavior of vacuum tubes.

See how real-world measurements differed from the pretty textbook diagrams in the post here.

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Bidirectional BLE Communication between Raspberry Pi and Raspberry Pi Pico W

Random Nerd Tutorials shows how to establish a bidirectional Bluetooth Low Energy (BLE) communication between a Raspberry Pi and a Raspberry Pi Pico.

The Raspberry Pi Pico will be set as a BLE peripheral with two characteristics. The Raspberry Pi will read and write to those characteristics, establishing a bidirectional communication.

For the Raspberry Pi Python program, we’ll use the bleak library, and for the Pico MicroPython program, we’ll use the aioble library.

Check out this guide in the post here.

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Running DOOM on a custom CPU and going viral

Doom is a video game made by id Software that released in 1993. It was a revolution in gaming that spread across the world and defined the modern FPS. Its popularity has given rise to the saying “Doom can run on anything”. To prove this point Doom has been ported to almost everything, from microcontrollers, to toasters, and even bacteria.

Armaan Gomes and Liam successfully ran (crawled) Doom on a CPU built from scratch (and then posted a video that got a few million views).

To be honest, I still can’t believe it. What did we really do though? Well, we designed a custom CPU at the logic gate level, connected it to peripherals, adapted the DOOM source code to run on our machine, and deployed it onto an FPGA to run in real time. Before running Doom, we had only run simple programs that we had written, like Pong and Mandelbrot sets. Now we can run full published games, but getting here was a rather rocky road.

Check out the hardware and software design in the post here.

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See inside insects with an electron microscope and a femtosecond laser

Ben Krasnow on the Applied Science YouTube Channel posts about seeing inside insects with an electron microscope and a femtosecond laser.

I use a femtosecond laser like a lightsaber to cross section insects and inspect them with an electron microscope. What’s really inside an insect’s head?

Femtosecond laser built by Oscillate Photonics: https://oscillatephotonics.com/

Open Beam Interface from Nanographs: https://github.com/nanographs/Open-Beam-Interface

See the video below:

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вторник, 21 июля 2026 г.

UPDATED GUIDE: Adafruit NeoPixel Überguide #AdafruitLearningSystem @Adafruit

Unknown июля 21, 2026 0

The Adafruit NeoPixel Überguide has been updated with info for how to use the new 5050 WWA White LEDs with Integrated Drivers that you can find in the NeoPixel Stick – 8 x 5050 WWA White LEDs with Integrated Drivers. WWA LEDs have 3 white LEDs in them in three tints (also known as ‘color temperatures’): warm white, cool white and amber, great for excellent lighting effects that want pure white lite. These are fun and glowy, and you can control each LED individually!

Read more at Adafruit NeoPixel Überguide

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понедельник, 20 июля 2026 г.

Starting a ZX Spectrum shooting gallery in earnest

Michael Martin is working through a port of a shooting gallery Rosetta-stone program to the ZX Spectrum.

It’s been a long road. We started out knowing how to control text and bitmap output and a decent handle on I/O. From there we designed a reasonably efficient blitting system that operated on 16×16 “sprites” that we carefully prepared for efficient blitting.

Even this wasn’t enough to keep our graphics updates smooth, though, so we then had to carefully arrange our bitmap operations to tear instead of flicker. I’ve been putting this project together bit by bit.

See how Michael has built out other parts in the post here.

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Using a MikroTik as a home router

Rafał Opiłowski was looking at setting up a new homelab, starting with a comprehensive networking setup.

Given my experiences related to performance and security issues with ISP-provider routers, I wanted to have a better control over the traffic on my home network. I decided to heavily focus traffic on wired connections, to offload WiFi and ensure connection between devices over local network are as fast as possible.

That’s where Mikrotik L009UiGS-RM comes in play. It has enough Gigabit Ethernet ports to connect all my Ethernet ports on the walls. PoE is a nice bonus too, as I can power my access point without having to use a wall wart.

See how each part of the network were set up in the post here.

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The Brick Game, through the ages

The handheld games of 2000: how could we forget the LCD screens and the cheesiness. Nicole Express got one at a church fundraiser and did a comparison with another model which advertises voice.

Another oddity about the box. Take a look at the screen. Notice that it has square blocks with a square inside, and a number of icons. Now compare it to the real thing.

Now notice on the real thing. The block have spades inside each of them, and the sidebar segments are different too, with an odd child. I don’t really think anything of it, but it is odd.

So, what is the Talking Brick Game 118-in-1? Well, the packaging promises all sorts of games…

See the analysis in the post here.

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The SmartFont Library for LED matrix displays

The SmartFont Library by Chaiwat Leanyos is a generic C++ font library for embedded systems (Arduino, ESP32, etc.), designed for efficient rendering of UTF-8 strings on pixel-based displays. It features special support for Thai Language, correctly positioning vowels and tone marks (0x0E00 – 0x0E7F).

Features

UTF-8 Support: Handles multi-byte characters automatically.
Thai Language Layout: Automatically adjusts vertical position of upper/lower vowels and tone marks to prevent overlapping.
Memory Efficient: Fonts are stored in program memory (PROGMEM on AVR/ESP).
Callback Based: Agnostic to display hardware. You provide drawPixel and clearPixel callbacks.
Font Converter: Includes a Python tool to generate compatible C source files from .ttf or .otf fonts.

See details on GitHub.

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Reviving a 15-year-old netbook with Arch Linux

Simon Park still has a netbook bought back in 2009. The ASUS Eee PC 1000HE has an Intel Atom N280 and 1GB of DDR2 RAM. The Atom N series was Intel’s line of cheap, low-performance CPUs for netbooks.

The chip has 56KB of L1 cache and 512KB of L2 cache, and its clock speed is 1.667GHz. Compare that with the Intel Core i3 N305, a budget laptop processor released in 2023, which has 768KB of L1 cache, 4MB of L2 cache, and runs at 3.8GHz, and you get a feel for how poor the Eee PC’s performance is.

Once the netbook was out of storage again, I decided to bring it back to life and put it to use again, whether as a server or a YouTube machine.

See the process Simon used to load Linux in the post here.

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Celestial Summer in Madison Square Park

How am I just finding out about the concept of a Moon Tree? How twee! How early 1970s late-stage Space Age optimism! Learn more about Celestial Celebrations here from Madison Square Park Conservancy:

In 1971, NASA astronaut Stuart Roosa carried seeds from five tree species on the Apollo 14 mission. After returning to Earth, the seeds were germinated, and the resulting seedlings, known as Moon Trees, were distributed to schools, state capitals, national parks, NASA centers, and dignitaries around the world.

Building on this legacy, in 2022, NASA’s Artemis Program sent a new generation of Moon Tree seeds into space, where they orbited the moon for four weeks aboard the Orion spacecraft. When they returned to Earth, Forest Service scientists studied and germinated the seeds, and Madison Square Park Conservancy (MSPC) was chosen by NASA to receive one of the seedlings!

On July 16, join Madison Square Park Conservancy for a celebration inspired by our Moon Tree, an American Sweetgum sapling grown from seeds that traveled around the Moon aboard NASA’s Artemis I mission.

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воскресенье, 19 июля 2026 г.

Subscribe to the Adafruit Youtube channel! #Youtube #AdafruitLearnSystem

Unknown июля 19, 2026 0

Electronics Show and Tell Wednesdays 7:30pm

Electronics show and tell every Wednesday at 7:30pm ET.

Adafruit Ask an Engineer LIVE 8pm Wednesday!

3D Hangouts – Thursdays

Hang out with Noe & Pedro Ruiz every week and discover 3D printing! Get your 3D news, projects, design tutorials, shop talk and more each week..

New Products – Updated Fridays

Each week Ladyada shows the newest great electronics at Adafruit!

Live from the desk of Ladyada

Chip Shortage

John Park’s Workshop

Project builds, hacks, and mods from John Park’s Workshop!

Advanced Manufacturing: Made in NYC by Adafruit!

This playlist highlights Adafruit manufacturing right here in NYC!

And so much more!

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The Python on Microcontrollers Newsletter: subscribe for free

Unknown июля 19, 2026 0

The Python for Microcontrollers Newsletter is the place for the latest news involving Python on hardware (microcontrollers AND single board computers like Raspberry Pi).

This ad-free, spam-free weekly email is filled with CircuitPython, MicroPython, and Python information that you may have missed, all in one place!

You get a summary of all the software, events, projects, and the latest hardware worldwide once a week, no ads! You can cancel anytime.

It arrives about 11 am Monday (US Eastern time) with all the week’s happenings.

And please tell your friends, colleagues, students, etc.

Please sign up > > >

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суббота, 18 июля 2026 г.

Adafruit New Products 7/15/2026

NeoPixel Stick – 8 x 5050 WWA White LEDs with Integrated Drivers

We’ve got the New nEw NEW for you right here

This week we debuted 1 New Product.

What is better than smart LEDs? Smart WWA LEDs! These NeoPixel sticks now have 3 white LEDs in them in three tints (also known as ‘color temperatures’): warm white, cool white and amber, great for excellent lighting effects that want pure white lite. These are fun and glowy, and you can control each LED individually! Make your own little LED arrangement with this stick of NeoPixel LEDs.

Visit www.adafruit.com/new for more info.

Want to get new products info beamed straight into your inbox? New nEw NEWs From Adafruit is an email newsletter sent once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter

New nEw NEWs From Adafruit is an email newsletter sent out once a week to subscribers only. It features new products, special offers, exciting original content, and more. Sign-up NOW for the Adafruit weekly Newsletter here: https://www.adafruit.com/newsletter

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Reactor’s Lift of SFF/H for Young Adult Readers

Some of the best reads are on a summer day at the beach or in the middle of the park. Check out Reactor Mag’s list of anticipated young adult SFF/H for July and August.

It may be hotter than Hades outside, but at least you’ve got your TBR to give you an excuse to visit your friendly neighborhood air conditioned library or independent bookstore. Out of all the nearly sixty science fiction, fantasy, and horror young adult books coming out in July and August, I’m highlighting my sixteen most anticipated. From summerween chills to swoon-worthy romantasy, from cutthroat competitions to creepy small towns, there is a lot to get excited for this summer.

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From The Archives: MagTag Kitchen Timer

Build a handy kitchen timer with the Adafruit MagTag. This project uses the eInk display, NeoPixels, and built-in buttons of the Adafruit MagTag to make a rechargeable, programmable kitchen timer that is also magnetic. The MagTag displays the time left and then plays an alarm through the speaker and flashes the NeoPixels when the timer is done.

See the full guide

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Sci-Fi Nuclear Core Battery Lamp