Difference between revisions of "Team:Aachen/Notebook/Construction Manuals/Stirrer"
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We use a DC motor and a 3D printed structure holding 4 magnets as our stirrer. The voltage to the circuit is controlled using PWM output values thus controlling the speed of the stirrer. | We use a DC motor and a 3D printed structure holding 4 magnets as our stirrer. The voltage to the circuit is controlled using PWM output values thus controlling the speed of the stirrer. | ||
| − | === | + | ===Materials Required=== |
*DC - Geared Motor | *DC - Geared Motor | ||
*Neodymium magnets | *Neodymium magnets | ||
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*custom made 3D Structure | *custom made 3D Structure | ||
| − | === | + | ===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. | 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. | ||
{{Team:Aachen/Figure|Aachen_BioreactorStirrer.jpg|title=Geared DC Motor|size=medium}} | {{Team:Aachen/Figure|Aachen_BioreactorStirrer.jpg|title=Geared DC Motor|size=medium}} | ||
| − | === | + | ===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. | 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. | ||
| − | === | + | ===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. | 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. | ||
| − | === | + | ===Circuit=== |
The circuit uses a Transistor and a Diode to control the RPM value using a PWM pin from Arduino. | The circuit uses a Transistor and a Diode to control the RPM value using a PWM pin from Arduino. | ||
{{Team:Aachen/Figure|Aachen_BioreactorStirrerCircuit.jpg|title=Circuit Diagram for Stirrer Control|size=medium}} | {{Team:Aachen/Figure|Aachen_BioreactorStirrerCircuit.jpg|title=Circuit Diagram for Stirrer Control|size=medium}} | ||
| − | === | + | ===Assembly Video=== |
| − | === | + | ===Files=== |
The files for the 3D structure can be found here : [[File:Aachen_Stirrer3D.zip]] | The files for the 3D structure can be found here : [[File:Aachen_Stirrer3D.zip]] | ||
The files for the Debug program can eb found here : [[File:Aachen_StirrerDebug.zip]] | The files for the Debug program can eb found here : [[File:Aachen_StirrerDebug.zip]] | ||
| − | === | + | ===References=== |
{{Team:Aachen/Footer|color=yellow}} | {{Team:Aachen/Footer|color=yellow}} | ||
Revision as of 10:28, 18 September 2015