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Required materials:
  • Required materials:

  • DC motor

  • potentiometer

  • NPN transistor

  • stirring magnet

  • soldering wire

  • battery (9V preferably)

  • glue

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glue the magnets on opposite ends to the motor piece. the motor piece can be anything hard that is approximately the size of the stirring magnet you are using.
  • glue the magnets on opposite ends to the motor piece.

  • the motor piece can be anything hard that is approximately the size of the stirring magnet you are using.

  • you may need to cut out a hole for the Motor drive axis too.

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solder the Middle wire of the potentiometer to the Base (middle) Pin of the transistor, solder the Collector pin to one of the Side Wires of the Potentiometer and solder + from the battery here too, solder the - from the battery (Gnd) to one of the Motor pins. The remaining Wire from the Potentiometer goes here too.
  • solder the Middle wire of the potentiometer to the Base (middle) Pin of the transistor,

  • solder the Collector pin to one of the Side Wires of the Potentiometer and solder + from the battery here too,

  • solder the - from the battery (Gnd) to one of the Motor pins. The remaining Wire from the Potentiometer goes here too.

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You should now have everything ready to spin the motor. Just attach the remaining transistor Pin to the remaining Motor Pin. The motor should now spin.
  • You should now have everything ready to spin the motor.

  • Just attach the remaining transistor Pin to the remaining Motor Pin.

  • The motor should now spin.

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for surface I used styropor, cut out the shape for the motor fit and a hole for the Potentiometer. cut out the shape for the motor fit and a hole for the Potentiometer.
  • for surface I used styropor,

  • cut out the shape for the motor fit and a hole for the Potentiometer.

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Finish Line

alesbreznik

Member since: 10/19/2013

1 Reputation

1 Guide authored

One Comment

Awesome design! Thanks for contributing.

Todd - Reply

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