Solarbotics Zendulum


This Product Has Been Discountinued, This Page Is For Reference Only.



$26.95 ea.

Base Colour

This is our latest kit, and features our solar-powered perpetual rolling action.

Description [Hide]

The Zendulum is a do-it-yourself, simple solderable kit. It features a spherical neodymium rare earth magnet, which emulates Newton's cradle when infrared irradiation is applied.

In English? There's a magnetic ball that rolls back and forth when powered by a solar cell. Assemble the kit and let it live on your table or windowsill - a simple desk lamp or sunlight can provide enough juice. When powered, the ball will seemingly roll back and forth on it's own, almost as if it's throwing the laws of physics and gravity to the wind.

What about a few of the features?

  • Solar Cell Mounting Bracket - Position your solar cell at 0, 30, 60, or 90 degrees to receive the maximum amount of light.
  • USB port - Don't have any light by your desk? Plug the Zendulum into your computer for power.
  • Back EMF LED Option - We provide the hacking ports for adding your own LED to make underglow or flashing light effects.
  • Bonsai and Yin-Yang Cutouts - Enhance your Zentastic meditations!

This kit gets its roots from the BEAM force-coil circuit used in the retired Sun Swinger kit, which was a solar-powered pendulum.



Want to see what other people are saying about the Zendulum? Check out these write-ups:

Documentation [Hide]

Related Products [Hide]


Solarbotics Useless Box Kit

Ever see a Useless Box? It turns itself off when you turn it on! Here's a kit to build your own!

$24.99 USD


Make Solar Pendulum Bundle

Based on the project in our book "Junkbots...", it's been re-featured in Make Magazine Volume 28 as a DIY article!

$15.80 USD


Solarbotics Tiny Lantern Kit

These tiny lanterns can be perfect stocking stuffers. You can hang them to be tree decorations or watch the shadows they project.

$2.75 USD


SPDT Slide Switch

PC-Mount SPDT narrow power switch

$1.35 USD



These custom-made-for-Solarbotics coils offer a strong electromagnetic kicks for creating motion from interactions with magnets. We LIKE these!

$3.80 USD


Bulbdial Clock Kit (With Case)

This kit from Evil Mad Science works like an indoor sundial, but with three shadows of different length. This version comes with your choice of laser-cut Acrylic case.

$85.00 USD


Solarbotics PumLantern Kit

This new pummer features even brighter LEDs than the old HexPummer, as well as stylized lantern construction.

$24.00 USD


6in Digital Calipers

Chances are, when you want to measure something you want it to be accurate. This is where a handy-dandy set of digital calipers becomes handy...dandy.

$14.95 USD


24 x 33mm Monocrystalline Solar Cell + MSE Circuit

This epoxy-encapsulated monocrystalline solar cell generates a nominal 4.5V / 18mA (sunlight) from a 24x33mm package. And has an integrated solarengine circuit board!

$6.50 USD


Wireless RGB LED Strip Controller

Unsure of how to interface RGB strips to your own microcontroller? Why not go with this ready-to-go remote controlled LED controller! Comes with a small remote that allows you to use wireless infrared signals to change the RGB strip color and lighting effects.

$6.50 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!