Skip to content
Logo

Hackaday

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

Day: March 26, 2006

How To Reverse Time

March 26, 2006 by Eliot 24 Comments

[moddy] sent in a couple of his projects that would probably be entertaining on a Sunday afternoon. The first one is how to reverse the rotation of a battery powered travel clock. It’s just a simple modification of the plate the coil is wrapped around. The second is adding 9V battery terminals to a cell phone. Neither project is practical, but they’re still fun.

Continue reading “How To Reverse Time” →

Posted in Cellphone Hacks

Search

Never miss a hack

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

Subscribe

If you missed it

  • Art of 3D printer in the middle of creating a Hackaday Jolly Wrencher

    Is Now The Time For Volumetric 3D Printing?

    18 Comments
  • Ultra-Long Range Flights To Ease Australian Air Travel

    50 Comments
  • Know Your Food: Organic Production

    33 Comments
  • UDP Broadcasting And Easily Finding Network Services

    21 Comments
  • How Airspeed Sensors Work

    28 Comments
More from this category

Our Columns

  • When An Engineering Education Doesn’t Teach You How To Really Make Anything

    56 Comments
  • Hackaday Europe 2026: Is Your Blood Pressure Monitor Lying To You?

    21 Comments
  • Hackaday Links: July 5, 2026

    8 Comments
  • Yesterday’s Technology, Re-engineered Today

    12 Comments
  • Hackaday Podcast Episode 376: Modern Retro Projects, Retro Modern Projects, And The Teen Years For 3D Printing

    2 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

  • Art of 3D printer in the middle of creating a Hackaday Jolly Wrencher

    Is Now The Time For Volumetric 3D Printing?

    18 Comments
  • Ultra-Long Range Flights To Ease Australian Air Travel

    50 Comments
  • Know Your Food: Organic Production

    33 Comments
  • UDP Broadcasting And Easily Finding Network Services

    21 Comments
  • How Airspeed Sensors Work

    28 Comments
More from this category

Categories

Our Columns

  • When An Engineering Education Doesn’t Teach You How To Really Make Anything

    56 Comments
  • Hackaday Europe 2026: Is Your Blood Pressure Monitor Lying To You?

    21 Comments
  • Hackaday Links: July 5, 2026

    8 Comments
  • Yesterday’s Technology, Re-engineered Today

    12 Comments
  • Hackaday Podcast Episode 376: Modern Retro Projects, Retro Modern Projects, And The Teen Years For 3D Printing

    2 Comments
More from this category

Recent comments

  • Marty. on Hackaday Europe 2026 – Building A Retro PC From Scratch
  • Weasel on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • Avi Cohen Stuart on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • pax on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • KC on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • BBK on The Bit79 Was A Famicom Clone That Took The “Family Computer” Name Seriously
  • Christian on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • Rant on When An Engineering Education Doesn’t Teach You How To Really Make Anything
  • Ian on The Coolest Hat At The Hacker Camp
  • Ian on It’s Full Steam Ahead For This Motorized Canoe
Logo
  • Home
  • Blog
  • Hackaday.io
  • 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 © 2026 | 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 informationCookie Management
Powered by WordPress VIP

Loading Comments...