Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Optics Design: On hold
Awaiting shipment of CMOS sensor to determine final dimensions
Awaiting finalization of XYZ translation mechanism to verify performance of optics
TIRF Testing: In Progress
Testing of different LEDs: color, brightness, diffusion shape
Spectroscopy: In Progress
Determine dimensions of apparatus
Risk reductions testing of photodiodes
Calibration of sensitivity
Electronics: In Progress
LED test circuit construction completed
Possible electronics design:
Design of CMOS electronics (Steve Roberts)
Implementation of transistor design for switching between stepper motor
Implementation of multiplexer for switching between stepper motor
Mechanical: In Progress
Redesign of translation prototype completed
Began fabrication of new microscope prototype XYZ translation design
Implementation of compression springs
Implementation of brass bushings for linear actuator
Software: In Progress
Arduino XYZ stepper code complete
Arduino Photo-diode testing code complete
Photomontaging Code in development
Graphical User Interface (GUI) for Mac iOS in development
Graphical User Interface (GUI) for iPad application in development
Accomplishments from Previous Week
Researched and ordered new CMOS image sensor with integrated electronics (USB)
Fabrication of XYZ translation mechanism components (plates/walls) using Lasercamm
Partial fabrication of new microscope prototype with updated XYZ translation design
Completed wiring for new (more powerful) stepper motor
Successful construction and testing of amplified photo-diode light detector circuit
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Spectroscopy Testing (Sean, Reggie)
Determine dimensions/configuration for spectroscopy
Determine resistance gains appropriate spectral wavelengths
TIRF Testing (Sean, Reggie)
Test performance of difference LEDs
Determination of critical angle
Assess imaging performance
Implement new CMOS module with existing hardware (Sean)
Assess magnification of new CMOS module (Reggie)
Fabrication of new XYZ translation mechanism (Leonardo, Kyle)
Fabrication of spectroscopy mounts (Leonardo, Kyle)
Consult with Steve Roberts about Electronics (Reggie, Sean)
Wiring alternatives to cut down Arduino pin usage (multiplexer or transistor)
Possibility of PCB design for electronics in final prototype
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from 5/1/12 Meetings:
Sponsor will take on the optics testing and experimentation
Team will design modular system which allows for newer/smaller optics to be implemented with minimal design changes (only decrease in height which is sponsor's goal)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from 4/16/12 Meeting:
Design Considerations:
Antibacklash springs to create bias
Other springs
Low stiffness, large elongation
Constant force springs
Oval shaft or dovetail (expensive)
Shaft with wheel
General Comments:
Must update priorities with sponsor (i.e. functional requirements, cost, size, etc.)
Actions Taken:
Began fabrication of redesigned XYZ translation mechanism
Discussed priorities with sponsor
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Inconsistent (oscillating) signal from photo-diode light intensity sensor circuit
Will consult with Steve Roberts
Resources or Information Required but not Available
CMOS modules (awaiting shipping)
Schedule
Completion of Second Microscope Prototype
Completion of TIRF and Spectroscopy Testing
Budget (list amount spent and amount remaining)
Amount Spent: $902.05
Amount Remaining: $597.95
Progress on Report and Webpage
Writing First Draft of Content for Webpage
Uploaded Content onto Media Page
Writing First Draft of Report