DC Motor Brushed Style

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About: I am robotics engineer and a teacher whose passion in life is breaking down the maths and academic jargon of programming and robotics into something that everyone can understand, primary school kids include...

What is it?

This is a very simple motor design that illustrates the right hand rule and the interaction between magnetic fields and flowing electric current. This interaction creates an effect where two sides of a rectangle of wire are pushed in opposite directions, thus making the rectangle spin. To learn more about the theory watch the video above.

Components:

3-6 Small circular neodymium magnets

1 AA Battery

1.5 meters 0.5mm laminated copper wire

2 50mm paper clips

50cm of insulation tape

1 Coin or button for stabilization

Sand paper

Tools:

Scissors

Wire cutters

Teacher Notes

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Step 1: Create Your Motor Coil

Step 1: Wrap wire around a rectangular object

Step 2: Tie of the ends in a way that wires are sticking out the sides as an axis for the coil to spin on

Step 3: Strip the ends of the wires (ONE FACE ONLY)

Step 2: Wrap the Battery to a Coin to Create a Stable Base

Step 3: Bend Paper Clips to Right Shape

Step 1: Bend the clips into an S shape

Step 2: Fold the top of each clip into a U shape

Step 4: Tape the Bend Cips to the Side of Battery

Step 1: Use about 10 cm of tape to attach each paper clip

Step 2: Wrap several turns of tape around the battery

Step 5: Place the Magnet and the Coil

Step 1: Place the magnet on the middle of the battery

Step 2: Place the coil on the clips and adjust untill it spins

To see the motor in action, watch the video from 9:45

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    2 Discussions

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    Robotix_automatoskins

    Reply 4 years ago on Introduction

    Except that I teach this to a group of gifted Year 3's and 4's.... I honestly think that at least half of them get it!