Skip to content
Logo

Hackaday

  • Home
  • Blog
  • Hackaday.io
  • Tindie
  • Contests
  • Submit
  • About

shadow sensor

1 Articles

DIY Watt-Balance Redefines Your Kilograms From Scratch

September 30, 2016 by Moritz Walter 34 Comments
national_prototype_kilogram_k20_replica
The definition of the kilogram is still a chunk of metal.

Machined from a chunk of a virtually indestructible platinum-iridium alloy, the international prototype kilogram (IPK) was built to last for an eternity. And yet, being the last remaining, physical artifact in a club of fundamental SI units, the current definition of the kilogram has worn out. Most certainly the watt-balance will take its place, and redefine the kilogram with a true, physical phenomenon. [Grady] just built his own watt-balance from scratch, and he provides you with a decent portion of scientific background on the matter.

Continue reading “DIY Watt-Balance Redefines Your Kilograms From Scratch” →

Posted in Misc HacksTagged electromagnetic actuators, electromagnets, optical feedback, shadow sensor, si units, watt balance

Search

Never miss a hack

Follow on facebook Follow on twitter Follow on youtube Follow on rss Contact us

Subscribe

If you missed it

  • Going Native With Android’s Native Development Kit

    7 Comments
  • Dragon Is The Latest, And Final, Craft To Reboost ISS

    47 Comments
  • Bare Metal STM32: The Various Real Time Clock Flavors

    8 Comments
  • FreeCAD Foray: From Brick To Shell

    18 Comments
  • GPS And Its Little Modules

    17 Comments
More from this category

Our Columns

  • Hackaday Links: September 14, 2025

    No comments
  • Keep Reading, Keep Watching

    13 Comments
  • Hackaday Podcast Episode 337: Homebrew Inductors, Teletypes In The Bedroom, And Action!

    No comments
  • This Week In Security: NPM, Kerbroasting, And The Rest Of The Story

    9 Comments
  • FreeCAD Foray: Good Practices

    25 Comments
More from this category

Search

Never miss a hack

Follow on facebook Follow on twitter Follow on youtube Follow on rss Contact us

Subscribe

If you missed it

  • Going Native With Android’s Native Development Kit

    7 Comments
  • Dragon Is The Latest, And Final, Craft To Reboost ISS

    47 Comments
  • Bare Metal STM32: The Various Real Time Clock Flavors

    8 Comments
  • FreeCAD Foray: From Brick To Shell

    18 Comments
  • GPS And Its Little Modules

    17 Comments
More from this category

Categories

Our Columns

  • Hackaday Links: September 14, 2025

    No comments
  • Keep Reading, Keep Watching

    13 Comments
  • Hackaday Podcast Episode 337: Homebrew Inductors, Teletypes In The Bedroom, And Action!

    No comments
  • This Week In Security: NPM, Kerbroasting, And The Rest Of The Story

    9 Comments
  • FreeCAD Foray: Good Practices

    25 Comments
More from this category

Recent comments

  • HaHa on Serious Chemical Threat Sniffer On A Budget
  • Greg A on Flashlight Repair Brings Entire Workshop To Bear
  • CRJEEA on This Rail Speeder Needs A Little Work
  • HaHa on Flashlight Repair Brings Entire Workshop To Bear
  • Greg A on Going Native With Android’s Native Development Kit
  • Greg A on Going Native With Android’s Native Development Kit
  • HaHa on This Rail Speeder Needs A Little Work
  • HaHa on This Rail Speeder Needs A Little Work
  • Greg A on Going Native With Android’s Native Development Kit
  • Jan Prägert on This Rail Speeder Needs A Little Work
Logo
  • Home
  • Blog
  • Hackaday.io
  • Tindie
  • Video
  • Submit A Tip
  • About
  • Contact Us

Never miss a hack

Follow on facebook Follow on twitter Follow on youtube Follow on rss Contact us

Subscribe to Newsletter

Copyright © 2025 | Hackaday, Hack A Day, and the Skull and Wrenches Logo are Trademarks of Hackaday.com | Privacy Policy | Terms of Service | Digital Services Act | Do not sell or share my personal information
Powered by WordPress VIP
 

Loading Comments...