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Painting Brush Bot: Robot STEAM Activity for Kids

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If you love robots, you’ll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

The painting brush bot is such a simple robot to make, but it has spectacular results! Add this activity to your STEM activities or technology activities and it will be a real class-pleaser!

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

Related: Thematic Units for Kids

steam challenge cards

Painting Brush Bot: Robot STEAM Activity for Kids

A note before starting the painting brush bot: You shouldn’t receive any shock from the current in this DC system, because the human body can absorb the current without any pain.

Most DC systems are less likely to shock you than AC systems, because they use lower amperage.

We recommend using no bigger than a 3 volt motor for this project, not only to prevent any sort of shock, but also, because the motor gets spinning really quickly.

When the clothespin travels around the rotor, it can whack you pretty good!

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

Disclaimer: This post contains affiliate links at no cost to you for your convenience. 

What you’ll need to make your own painting brush bot:

  • 3 volt motor
  • Mini clothespin
  • Small scrub brush
  • Large play tray
  • Computer paper
  • Washable paint
  • AAA battery pack
  • AAA batteries
  • Hot glue gun and glue sticks
  • Electrical tape
  • Needlenose pliers

Building Your Painting Brush Bot

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

The first thing you’ll want to do is connect your motor to your battery pack. Connect one of the wires to either port on the motor using the needlenose pliers.

We found we had to tape our wires in place to keep them from falling off. Plug in your batteries and make sure the motor is spinning properly before moving forward.

Glue the battery pack and the motor to the top of your brush. On ours, the motor could just squeeze between the handle and the brush, but if your handle is closer to the brush, you might have to cut it off with a saw.

Glue a mini clothespin to the rotor of the motor to make it off-balance. This will cause the vibrations that make the painting brush bot move.

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

Plug in the batteries and make sure your brush bot works before moving on.

Making Your Robot Paint

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

Cover the bottom of your play tray with computer paper. We taped the pieces together so the brush bot didn’t pull the paper up when it moved across the paper.

Place a few dabs of paint randomly on the paper.

Turn on your robot.

Let the painting brush bot loose on the paper and watch it paint like a master! Or at least a toddler.

If you love robots, you'll love this amazing painting brush bot that paints all on its own! Kids will be delighted they can build their own robot!

We didn’t get a video of this robot in action, but we did get a video of our drawing unicorn robot, which uses the same motor system. Watch it here:

steam challenge cards

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Filed Under: STEM Activities Tagged With: robots

About Brenda Priddy

Brenda grew up thinking she hated science. But when her 4-year- old daughter was more interested in reading science facts than fairy tales, Brenda realized she had to learn more. Through simple at-home science experiments, Brenda developed a passion for science and now works as a STEMed advocate with a team of science educators to create hands-on STEM projects and curriculum for kids.

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What is STEAM?

STEAM activities for kids promote the idea that science, technology, engineering, art, and math can all work together to help kids become critical thinkers, problem solvers, and innovators!

Join us on our journey to discover just how much fun science experiments can be.

What we do… 

STEAMsational offers STEM and science lesson plans and teaching resources to provide a firm STEM foundation for children in the classroom or home.

All you need to do is find your supplies, gather your scientists, and let the innovation unfold.

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