Wobble Head Rattle Writer

Introduction: Wobble Head Rattle Writer

About: The mission of The STEMAZing Project is to provide high-quality professional development for educators to engage and empower their students with authentic, relevant, and developmentally appropriate learning op…

This simple robot will have your students engineering this adorable rattling robot with its wobbly head!

Materials: electric toothbrush with one AA battery (available for $1 at most dollar stores), pool noodle, plastic knife, washable markers, rubber bands, balloons, permanent marker, googly eyes, paper, duct tape, ruler

Step 1: Install Battery and Test Electric Toothbrush.

Install the battery in the toothbrush and check that it will work when you turn the switch on. Troubleshooting: Double check the battery is in with the negative side down and the positive side up. Make sure the cap is aligned correctly. There are little arrows on the body of the toothbrush and the cap you should line up.

Step 2: Cutting Pool Noodle.

Using a plastic knife, cut off a 7 inch length of pool noodle. If you don’t have a ruler, just measure the pool noddle to be long enough that it can fit the entire toothbrush.

Step 3: Make Wobble Head.

Blow up a balloon. Tie it. Draw a face on it with permanent maker and add the googly eyes.

Step 4: Securing Wobble Head to Electric Toothbrush.

Using half a width of duct tape, secure the balloon nozzle about an inch below the toothbrush cap. Then push the toothbrush all the way into the pool noodle.

Step 5: Secure Markers to Pool Noodle.

Choose at least three markers (in colors of your choice!), and secure them to the pool noodle with a rubber band off the end of the pool noodle with the brush end.

Step 6: It's Alive! Make It Move and Draw.

Uncap the markers and place the rattle writer on a sheet of paper. Turn on the the toothbrush, and watch your Rattle Writer go! Now would be an appropriate time to shout, “It’s alive!” Be sure to give your rattle writer a name. (If you have trouble getting your writer to move, try adjusting the height of the toothbrush or the angles of the markers. Try angling them all slightly.)

Step 7: Engineer It!

Now, think about how you might fiddle with the arrangement of the markers, rubber bands, or toothbrush to create different designs! Use this base model as the foundation to iterate through the engineering design process. What will you change? What impact does it have on the performance of the Wobble Head Rattle Writer?

Challenges

 Can you get the rattle rider to draw a (nearly) straight line?

 How about overlapping circles? Small spirals? Big spirals?

 What other shapes can you get it to draw?

 Can you give your rattle writer arms and legs? Hair?

 Can you make an outfit of clothes for your rattle writer?

Robots Contest

Participated in the
Robots Contest

Be the First to Share

    Recommendations

    • Make it Move Contest 2020

      Make it Move Contest 2020
    • Back to Basics Contest

      Back to Basics Contest
    • Pumpkin Challenge

      Pumpkin Challenge

    8 Discussions

    0
    Alfredo  Dente
    Alfredo Dente

    6 days ago

    TheSTEMAZingPro, that´s really amazing!!! What´s even more amazing is this robot someone made!

    Here´s the link to a ¨Behind The Scenes Instructable¨ that the person made about this robot:https://www.instructables.com/id/MMR-Magnetic-Moti...

    One day, you could try something like this for a theme park or a movie.

    FCE630VKETYWDNU - Edited.jpg
    0
    TheSTEMAZingPro
    TheSTEMAZingPro

    Reply 1 day ago

    Looks great! This is a bit more advanced than our design and wouldn't count as #STEMontheCheap. Still, pretty cool!

    0
    Alfredo  Dente
    Alfredo Dente

    Reply 1 day ago

    The person´s username is ¨TecnoProfessor¨"and he makes lots of this stuff. Also the picture is the actual robot. TecnoProfessor could make a big business out of this!!!!! You could also get some practice on making this and then when you have enough skills and make it. It could be part of "#STEMontheCostly", especially since you probably have enough money by now for it, because you must have gotten more money over the span of time between when you published this Instructable and when you started "#STEMontheCheap."

    0
    Alfredo  Dente
    Alfredo Dente

    Reply 6 days ago

    The person´s username is ¨TecnoProfessor¨"and he makes lots of this stuff. Also the picture is the actual robot. TecnoProfessor could make a big business out of this!!!!!

    0
    Brokentost123
    Brokentost123

    6 days ago on Step 6

    not to be mean but the face is kinda creepy

    0
    TheSTEMAZingPro
    TheSTEMAZingPro

    Reply 1 day ago

    No worries! Hopefully you will make one with a less creepy face. Be sure to share it here. You can add hair, arms, legs, clothes, a hat, and more. Maybe that will make it less creepy too.

    0
    PeaProg
    PeaProg

    1 day ago

    Really cool and fun craft! like the face

    0
    TheSTEMAZingPro
    TheSTEMAZingPro

    Reply 1 day ago

    The balloon wobble head really makes it. My niece made one with me via distance learning before we added the head. Now she thinks she has never made this project before. I guess we will have to do it again.