Difference between revisions of "Team:Aachen/Notebook/Construction Manuals/Stirrer"

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===DC - Geared Motor===
 
===DC - Geared Motor===
The DC Geared Motor we use is a combination of 4:4:1 gears and a brushed DC motor. The motor is cylindrical, with a diameter just under 25 mm, D shaped output shaft which is 4 mm in diameter and extends 12.5 mm from the face plate of the gear box. This motor unit weighing 95 gms, has a speed of 1400 RPM d and 150 mAmps Current rating at 6V.
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The DC Geared Motor we use is a combination of 4:4:1 gears and a brushed DC motor. The motor is cylindrical, with a diameter just under 25 mm, D shaped output shaft which is 4 mm in diameter and extends 12.5 mm from the face plate of the gear box. This motor unit weighing 95 g, has a speed of 1400 RPM and 150 mA Current rating at 6V.
 
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Revision as of 21:55, 18 September 2015


Materials Required

  • DC - Geared Motor
  • Neodymium magnets
  • Transistor IRLIZ44N
  • custom made 3D Structure
  • diode

Aachen DCMotor.jpg
Geared DC Motor

DC - Geared Motor

The DC Geared Motor we use is a combination of 4:4:1 gears and a brushed DC motor. The motor is cylindrical, with a diameter just under 25 mm, D shaped output shaft which is 4 mm in diameter and extends 12.5 mm from the face plate of the gear box. This motor unit weighing 95 g, has a speed of 1400 RPM and 150 mA Current rating at 6V.

Aachen StructureAndMagnet.png
3D Structure with magnets

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Magnets and 3D structure

Neodymium cubic supermagnets of size 5 mm are fitted into a 3D structure on the motor, to create a magnetic field for the fish inside the bioreactor. The 3D structure is a platform to be fitted on the DC motor, having cubical holes to fit the magnets in.

Aachen DC Transistor.jpg
Geared DC Motor

Transistor IRLIZ44N

It is a single pulse avalanche rated MOSFET in an isolated package. It has a continuous Drain current of maximum 30 Amps and Drain to Source maximum withstandable voltage of 16 volts.

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Circuit

The circuit uses a Transistor and a Diode to control the RPM value using a PWM pin from Arduino.

Aachen StirrerCircuit.png
Circuit Diagram for Stirrer Control

Assembly Video

Files

The files for the 3D structure can be found here : Aachen_Stirrer.zip

The files for the Debug program can eb found here : Aachen_StirrerDebug.zip

References