Ages 9+

Motion-Sensing Spider

Name: Motion-Sensing Spider
Brand: KiwiCo
SKU: SMSS-F2239
Price: 27.95 USD
Availability: OutOfStock
Rating: 4.743589743589744 (39 reviews)

$27.954.7

Get ready for some seriously spooky fun — with a surprise spider that senses motion! Rig up an electric circuit with a motor and a motion-detecting sensor, and watch as your creepy critter contraption drops on unsuspecting victims, er, friends. Explore the spooky science behind your sensor, then discover other marvelous machines that detect motion — just like your spider. This is one Halloween trick that’s a treat to build!Read more

Check out the video tutorial and build along with us!

• Craft a spider out of yarn, a chenille stem, and up to 12 wiggle eyes!

• Get hands-on with engineering. Build the motor box using the included sensor (which sends a signal when it detects movement), transistor (which switches the motor on when it gets a signal), motor (which spins to drop your spider), and battery pack (which powers your spider’s movement).

• Includes spiderweb roving to customize your contraption and a mounting strip to hang it from your wall.

• Get creative! You can swap out your spider for any creepy-cute critter you make from at-home materials.

• 29-page booklet includes step-by-step troubleshooting instructions, a rundown of how your sensor works, and fun facts about motion-sensing alarm clocks, buses, and other marvelous machines.

• Spider box dimensions: 6.25 x 4.25 x 4.25 inches (15.9 x 5.7 x 5.7 cm).

From the desk of the product designer:

Behind the design

“We were inspired by spiders in the wild and their super motion-detecting senses! Instead of electronic sensors, these real-life creepy crawlers use tiny hairs and slits in their bodies to feel miniscule vibrations, like when prey gets caught up in their webs.”

- KiwiCo Product Designer

By the numbers

12

Spiders prototyped

15

Spider box designs

27!

Coworkers successfully spooked

Reviews

4.7

32 reviews

Write a review ➜

Don

01/20/2023

very high-tech and FUN!

Nanny

11/23/2022

My grandson had a great time building this! His mom doesn’t like spiders so he loved teasing her!

Joy

11/10/2022

It was difficult to get it to work at first but once working it was great!

Amezoah

11/08/2022

It was a lot of fun, loved it so much we give it 10 stars but only for about a day and then it stopped working so hard to take off 6 stars for the very short lifespan

MomofKidWhoLovesKiwiCrates

11/07/2022

This was a really great and fun build. My only qualm is that perhaps a note should be included to warn that the command strips don't stick at all to surfaces with flat paint. The paint should at least be semi-gloss. I don't think that its the fault of the project -- I tried with my own velcro based command strips as well and had the same result (and yes, I did clean the wall with alcohol beforehand). But it would have helped to have known this beforehand, because before I realized this, it kept falling off the wall to the ground and I had to keep fixing it (still works even after multiple tumbles - haha).