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stem science fair project car

Project Time: 15-30 minutes

Create this super simple STEM car using popsicle sticks and a DC motor.

stem science fair project car

Materials Needed

For this project you will need the following items:

  • AA Battery Holder
  • DC Motor
  • Switch
  • Craft Sticks
  • Bottle Caps
  • Straw
  • Wood Skewer / Dowel Rods

stem science fair project car

Step 1 – Build The Body

Using hot glue, attach one craft stick perpendicular to the other craft stick.

stem science fair project car

Step 2 – Attach The Straw

The straw will be used to hold your axle.  Glue the straw to the end piece and trim the ends.

stem science fair project car

Step 3 – Prep The Wheels

Find the center of the 3 bottle caps and drill a hole the same diameter of your wooden skewer.

stem science fair project car

Step 4 – Attach The Wheels

Slide the skewer into the straw leaving about an inch sticking out on both ends.  Mount the bottle caps to the axle using hot glue to secure.  Make sure to hold the wheels vertical and straight while the hot glue cools down.

stem science fair project car

Once the wheels have been mounted, you can trim the excess of the wooden axle.

stem science fair project car

Step 5 – Battery Holder

Glue the battery holder to the middle of the car.

stem science fair project car

Step 6 – Attach The Motor

Glue the middle of the motor to the end of the craft stick.  Make sure the terminals of the motor are on top and visible.

stem science fair project car

Step 7 – Attach Front Wheel

Attach the final bottle cap to the motor shaft using hot glue.  Make sure to hold the wheel straight and vertical while the glue cools.

stem science fair project car

Step 8 – Wire The Motor

Attach the black wire from the battery holder to one of the terminals on the motor.  Twist the wire in place to secure it.

stem science fair project car

Step 9 – Connect The Switch

Attach the red wire from the battery holder to the remaining motor terminal and twist to secure it.  Cut the red wire in half and then strip both ends.  Connect the red wire from the battery holder to the middle hole in the switch.  Attach the red wire from the motor to the terminal on the end of the switch.

Glue the switch to the craft stick.

stem science fair project car

Complete

Add 2 AA batteries to the battery holder and flip the switch to test out your car.

stem science fair project car

Show us your project

Tweet us at @Makerspaces_com and show us how your car turned out.

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