Glowing Pendulum

Ages 9-16+

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Build out this pendulum kit to explore chaotic motion. Watch patterns emerge on your glow board with the UV light.

Includes a step-by-step video tutorial link, illustrated blueprint instructions, all the materials, and a special-edition Tinker Zine magazine for more fun!


  • Build the glow board
  • Assemble the LED arm
  • Put together the pendulum
  • Glowing Maze Race
  • DIY Invisible Ink
  • DIY Glow Board Graffiti
  • "The Butterfly Effect" Tinker Zine magazine


  • Chaotic Systems
  • LED Circuits
  • Fluorescence

Using charter school funds?

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18 reviews

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  1. r r r r r

    Erin, Aug 5, 2020

    Very engaging

    My 9 year old is having so much fun exploring ways to use this project. I do wish it were a bit more sturdy.

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    Jeffrey, Mar 27, 2020

    Drop and swoop!

    The pendulum was awesome to assemble and my daughter had a blast watching it drop and swoop to make chaotic patterns.

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    Michelle, Mar 4, 2020

    Loved it!

    My son really wanted to make a double pendulum so he was so excited about this crate. It contained everything he needed and the directions were easy for him to follow.

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    Claire, Feb 7, 2020

    Chaotic motion lesson

    Reading the Tinkerzine and learning about chaotic motion was a cool lesson for both me and my son. Seeing the science play out in real life was a great way of applying science to hands-on learning.

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    Sedona, Jan 20, 2020

    Flourescence is amazing!

    Flourescence is amazing! My son and I created the glowing pendulum and it was so exciting seing chaotic motion in action!

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    Aaron, Dec 21, 2019

    Lots of STEM concepts

    We learned about flourescence, chaotic systems, and LED circuits. Such a cool lesson for my 11 year old! They really grasped all of the STEM concepts

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    Florence, Nov 30, 2019

    Prepared carefully

    Between the UV Light to the instructional video, KiwiCo sets up each project for success. My child is always fully prepared and guided as he creates another awesome project.

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    Rhonda, Nov 12, 2019

    Crazy chaotic patterns

    This project was for sure a favorite for my son. He loved the way the crazy patterns showed up on the board and how they were always different.

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    Iris, Oct 24, 2019

    Great weekend activity

    Assembling the arm and building the glow board was the perfect weekend activity. We enjoyed learning the science behind all of those wacky patterns.

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    Connor, Sep 28, 2019

    Nothing like we have seen before

    Continually impressed by the ideas that Tinker Crate has to offer. This glowing pendulum was like anyhting we have played with before. Thanks so much KiwiCo

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    Quincy, Sep 11, 2019

    The butterfly effect

    We absolutely loved learning about the Butterfly Effect in the Tinkerzine. It is so beneficial to learn about different science concepts and theories and being able to apply them to everyday life.Tinker Crate is awesome!

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    Shawn, Aug 2, 2019

    Fun DIYs and games

    The glowing maze race was super fun! My daughter was playing with the pendulum for hours. And to add on, the DIYs were really fun too.

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    Maureen, Aug 1, 2019

    Fun and educational

    My daughter really enjoyed assembling the pendulum and was fascinated with the different ways she could use the finished product. The different experiments we could perform with everything that was supplied added to the educational value. Very fun and engaging, and my daughter was able to easily see the connection with the chaos.

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    Jane, Jul 16, 2019

    Easy to Construct- Glowing pendulum

    Easy to follow directions and did not take long to build. It was cool but the pendulum really didn’t leave much of a pattern as the images show.

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    Jason, Jul 15, 2019

    Personal favorite!

    This is one of our favorite crates to date! My daughter was fascinated by the double pendulum, and everything went together and worked really well. The finished product was very fun to play with!

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    Katherine, Jun 12, 2019

    Glow in the dark for the win

    My son loved this crate! There is something so cool and ultra exciting about being in the dark and experimenting. The use of the UV ppaer was unique and fun, and the I liked the electrical components to create the glow in the dark aspect. It was easy to build and study so the concept was readily understood by my 10 year old son.

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    Tanya A., Jun 24, 2018

    Cool science project but didn't take long to build.

    Very cool science behind the project, sturdy materials, good instructions, and great explanations in the Tinkerzine, but it didnt take very long for our 11 year old to build.

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    Ben G., Jan 30, 2018

    Good quality materials and instructions are accurate.

    The materials are good quality, the directions are easy to follow with the drawings showing exactly how to do it. The finished product was awesome! My 10 year old grandson and I assembled it together (which is a wonderful bonding experience with grandma ) and he thought it was the

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