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Defeating Bacteria In Hot Water Systems With A Heat Exchanger

The average hot water is a relatively simple appliance to understand. It uses gas or electricity to dump energy into water in the form of heat, keeping it at a …read more

What’s Mu Metal?

If you tear into old TVs or recording equipment, you may see shields made from some exotic-looking metal. Old timers will tell you it’s called mu metal, and its purpose …read more

This Week In Security: Android Malware, VOIP Hijack, Signal Contact Discovery, And TeamPCP Arrests

On GitHub, [AyaanB] details buying a cheap Android TV streaming device, looking for, and finding, baked-in malware. Multiple warnings have been issued by the FBI and CISA regarding malware on …read more

Australia’s Nationwide Phone Outage Was An Embarrassing Failure

The phones! They were one of the basic utilities of the 20th century, and were just about as reliable as death and taxes. Even when then power grid went down, …read more

FLOSS Weekly Episode 879: Easy Like Butter

This week Jonathan chats with Nathan Freitas of the Guardian Project! What is going on at the forefront of Open Source and privacy advocacy? Where are we on a true …read more

From The Blog

See all blog entries
  • Doubling Thermal Printer Resolution By Wiggling

    2 Comments

    By Maya Posch | September 2, 2026

    Thermal printers are still extremely common today, using small heating elements in combination with temperature-sensitive paper to create a dot matrix-like effect without messing with ink ribbons and complex mechanisms. …read more

  • Harvesting Namib Desert Fog With High Voltage

    3 Comments

    By Maya Posch | September 2, 2026

    As fun as mucking about with simulated environments in a laboratory is, at some point you have to do those field tests to demonstrate that your prototype actually works in …read more

  • FLOSS Weekly Episode 880: The Two Wolves

    No comments

    By Jonathan Bennett | September 2, 2026

    This week Jonathan chats with Benjamin Samuels of Trail of Bits! The conversation focuses on Patch the Planet, a new initiative to help Open Source projects deal with the fallout …read more

  • How A 1981 RAM Expansion Worked

    15 Comments

    By Jenny List | September 2, 2026

    Sir Clive Sinclair and his company were notorious for pushing the limits of electronic parts in search of a low price, and his ZX series 8-bit computers were fine examples …read more

  • “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy

    45 Comments

    By Al Williams | September 2, 2026

    If you used a scientific calculator in the 1970s or 1980s, there was a fair chance that it worked differently from almost every calculator you see today. Instead of typing: …read more

  • HDMI For The Color Computer 2

    5 Comments

    By Zoe Skyforest | September 2, 2026

    [Scott Baker] bought a TRS-80 Color Computer off eBay some five years ago. He’d always intended to add a CoCoVGA or CoCoDV upgrade to hook it up to a monitor, …read more

  • Creating The Greenest Possible Clothing With Living Fungi

    19 Comments

    By Maya Posch | September 2, 2026

    Despite the wide variety of fabrics used for our clothing, they all share the property of not being living tissues. This could be due to them never having been part …read more

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  • “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy

    45 Comments
  • Hackaday Europe 2026: Playstation 4 To Psychometer

    No comments
  • What’s Mu Metal?

    24 Comments
  • Australia’s Nationwide Phone Outage Was An Embarrassing Failure

    27 Comments
  • Hackaday Europe 2026: PCBs With A Plot

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Our Columns

  • FLOSS Weekly Episode 880: The Two Wolves

    No comments
  • PETG: The PLA Filament Alternative That Just Works

    44 Comments
  • Defeating Bacteria In Hot Water Systems With A Heat Exchanger

    69 Comments
  • Hackaday Links: August 30, 2026

    12 Comments
  • Same As It Ever Was

    139 Comments
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Featured Projects

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PowerPD — ESP32 USB-C PD/PPS Bench Power Supply

PowerPD — ESP32 USB-C PD/PPS Bench Power Supply

by Raushan Kumar
LightInk

LightInk

by Daniel Ansorregui

Trending Projects

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Siemens SIKIT-DK 8080

Siemens SIKIT-DK 8080

by senily64dx
PDP8e recreated in an FPGA

PDP8e recreated in an FPGA

by D.b.armstrong
Barn Door Star Tracker: all-metal version

Barn Door Star Tracker: all-metal version

by RobG
Z80 + RP2350B ZX-compatible homebrew retrocomputer

Z80 + RP2350B ZX-compatible homebrew retrocomputer

by Vlad
YUMO PULSE — ESP32-C3 Desk Gadget

YUMO PULSE — ESP32-C3 Desk Gadget

by YUMO.BUILDS
YUMO GLOBE

YUMO GLOBE

by YUMO.BUILDS

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If you missed it

  • “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy

    45 Comments
  • Hackaday Europe 2026: Playstation 4 To Psychometer

    No comments
  • What’s Mu Metal?

    24 Comments
  • Australia’s Nationwide Phone Outage Was An Embarrassing Failure

    27 Comments
  • Hackaday Europe 2026: PCBs With A Plot

    No comments
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Categories

Our Columns

  • FLOSS Weekly Episode 880: The Two Wolves

    No comments
  • PETG: The PLA Filament Alternative That Just Works

    44 Comments
  • Defeating Bacteria In Hot Water Systems With A Heat Exchanger

    69 Comments
  • Hackaday Links: August 30, 2026

    12 Comments
  • Same As It Ever Was

    139 Comments
More from this category

Recent comments

  • Josh on Doubling Thermal Printer Resolution By Wiggling
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Warren D Young on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
  • Dielectric on “I’m Not Dead Yet!” Reverse Polish Notation Calculators You Can Still Buy
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Now on Hackaday.io

  • babak lashani liked Hackaday.io Project.
  • Bud Bennett has added details to Solar Electric System Monitor.
  • senily64dx has added a new log for Siemens SIKIT-DK 8080.
  • senily64dx has updated the project titled Siemens SIKIT-DK 8080.
  • Bud Bennett has added a new project titled Solar Electric System Monitor.
  • D.b.armstrong has updated the project titled PDP8e recreated in an FPGA.
  • Serhii has updated the log for Industrial Laser Distance Sensor.
  • RobG has added a new log for Barn Door Star Tracker: all-metal version.
  • Vlad has added a new log for Z80 + RP2350B ZX-compatible homebrew retrocomputer.
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