Skip to content
Logo

Hackaday

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

optical feedback

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

  • Ask Hackaday: The Ten Dollar Digital Mixing Desk?

    8 Comments
  • Internet Connected Toaster

    Smart Ovens Are Doing Dumb Checks For Internet Connectivity

    55 Comments
  • Now ChatGPT Can Make Breakfast For Me

    49 Comments
  • Detecting Machine-Generated Content: An Easier Task For Machine Or Human?

    40 Comments
  • The Radioactive Source Missing In Australian Desert Has Been Found

    58 Comments
More from this category

Our Columns

  • Ask Hackaday: The Ten Dollar Digital Mixing Desk?

    8 Comments
  • Hackaday Links: February 5, 2023

    23 Comments
  • Copyright Data, But Do It Right

    33 Comments
  • Hackaday Podcast 204: Cesium, Colorful Cast Buttons, And CNC Pizza

    2 Comments
  • This Week In Security: Github, Google, And Realtek

    4 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

  • Ask Hackaday: The Ten Dollar Digital Mixing Desk?

    8 Comments
  • Internet Connected Toaster

    Smart Ovens Are Doing Dumb Checks For Internet Connectivity

    55 Comments
  • Now ChatGPT Can Make Breakfast For Me

    49 Comments
  • Detecting Machine-Generated Content: An Easier Task For Machine Or Human?

    40 Comments
  • The Radioactive Source Missing In Australian Desert Has Been Found

    58 Comments
More from this category

Categories

Our Columns

  • Ask Hackaday: The Ten Dollar Digital Mixing Desk?

    8 Comments
  • Hackaday Links: February 5, 2023

    23 Comments
  • Copyright Data, But Do It Right

    33 Comments
  • Hackaday Podcast 204: Cesium, Colorful Cast Buttons, And CNC Pizza

    2 Comments
  • This Week In Security: Github, Google, And Realtek

    4 Comments
More from this category

Recent comments

  • Dude on Ask Hackaday: The Ten Dollar Digital Mixing Desk?
  • Michael Gardi on MCM/70 Replica Embodies Proud Canadian Heritage
  • Diogenes on Surfing The Web Like It’s 1978 — Carbonyl
  • Greg A on Mechanical Keyboard Is Also A Mouse
  • Shirley Marquez on Ask Hackaday: The Ten Dollar Digital Mixing Desk?
  • Dude on Ask Hackaday: The Ten Dollar Digital Mixing Desk?
  • kannan on Ask Hackaday: The Ten Dollar Digital Mixing Desk?
  • PWalsh on Ask Hackaday: The Ten Dollar Digital Mixing Desk?
  • Greg A on Reliving A Bitmapped Past With A Veritable Hoard Of Bitmap Fonts
  • just passing on Ask Hackaday: The Ten Dollar Digital Mixing Desk?

Now on Hackaday.io

  • kelvinA has added a new log for SecSavr Sol^2 [gd0045].
  • nretro liked DIY Protected Lithium Battery Charger (TP4056).
  • Dave Collins has updated the log for HB6809 Homebrew computer.
  • G. Rosa has updated details to Robotic Arm pouring a drink.
  • agp.cooper has updated the log for Hardware Controlled 4 bit CPU.
  • sjm4306 liked IV19 Clock.
  • canique has added a new log for Canique Climat.
  • EG888 liked Spooky Scary Cyberdeck.
  • EG888 liked Mk 2 CyberDeck.
  • reshambhattarai liked FM Transmitter Circuit by PCBGOGO.
Logo
  • Home
  • Blog
  • Hackaday.io
  • Tindie
  • Hackaday Prize
  • 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 © 2023 | Hackaday, Hack A Day, and the Skull and Wrenches Logo are Trademarks of Hackaday.com | Privacy Policy | Terms of Service
Powered by WordPress VIP

By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Learn more

 

Loading Comments...