Low-Cost Fundus Camera Status Update

Software Linux distribution - Ubuntu Embedded program written in Python and Java Python for opening communication ports, and control Java for implementing active video filters and noise reduction. 60Hz flicker filter can be implemented in both GUI written in Java

Software - Status/Plan Beginning development on external system, will port to ODROID once it is ready. Architecture designed by Tuesday 2/9 Cecilia & Casey working on this. Complete software by 3/11. Test connection of software with other system components by 3/18. Port software to ODROID by 4/1. Bug fix as needed while testing entire system.

Hardware ODROID XU-4 ODROID-VU7 (7 inch screen) See3CAM Solid State Drive 8Gb eMMC

Hardware - ODROID-VU7

Hardware - ODROID-VU7

Hardware - Status/Plan All ordered hardware is on hand. ODROID XU-4 not sending HDMI signal to display. Casey has tested, unsure where the problem originating Technical Support in Korean Emailed Korean speaking students at RIT for translation help, large response Meeting evening of 2/3 to call technical support and have translation done Decision on how to proceed by 2/12 at the latest May have to repurchase from a local distributor as it is out of return period Goal: Functioning ODROID in hand by 3/18

Mechanical Base Preconstructed Base FDA - approved provided by Prof. Sisson FDA - approved Allows for large and fine movements Commercially available

Controls The X and Z axis are controlled using a joystick for fine movements and a loose base for large movements. The Y axis is controlled by a dial connected to a screw allowing for fine movements. The X axis can be locked by tightening a thumb screws.

Additional Mechanical Design (Central housing) The central stand will hold a detachable component which will hold: ODROID-C processor (Green) ODROID-VU7 7in Screen (Black) See3CAM (Yellow) Solid State Drive (Blue) Lens housing (Yellow)

Additional Mechanical Design (Lens housing) By modifying a film based fundus camera we achieve: Has a proven lens structure. Has a dated but optically sound lighting system. This will require: Integrate sensor at correct distance. Replace dated electrical lighting components with LED system.

Mechanical Design Risk analysis Stand is unsecured and is unstable while in transport causing difficulties in portability. Will make Central housing separable allowing them to be transported separately. Team does not own design for stand Central housing attachment to stand will be made adaptable. Lens housing was recovered from an old device. Will make CAD diagrams of the housing to insure ability to duplicate final design.

Mechanical Design - Status/Plan Design for the removable mount to attach camera to moveable base made. Needs to be 3D printed. The overall housing for the system is dependent on the completion of the lens array design (discussed in optics) Complete design/begin building casing by 2/26

Illumination and Flash Kowa RC-2 Xenon bulb Infrared lighting required to align camera with pupil while avoiding dilation

Illumination and Flash - Brightness Use luxmeter to attenuate light intensity to around 1,000 lux (1,000 lumen/m2) Determined by comparing other FDA-approved fundus cameras

Illumination and Flash - Status/Plan Beam Splitter Was brought up this was never fully considered. Would cause a slightly more expensive design but an overall better product, smaller in size Would allow the light to be coaxial instead of travelling through a liquid light guide. Lens placement would be different using this method Both require shutters Plan: try to find a beam splitter for proof of concept by 2/4 Else proceed with current plan and leave for a future team to consider.

Illumination and Flash - Status/Plan Detailed design/parts list completed by 2/12 Includes plan for mechanical shutter implementation Light sources with shutter built by 2/26

Optics Status/Plan Possess a 20D lens currently Team feels this is a large part that we all need to work on Will begin designing once the illumination design is complete. Design lens array/verify with Ted Kinsman by 2/26 Build lens setup and verify proper magnification/field of view being obtained by 3/4 Combine system with light/camera by 3/11

Current BOM

Additional Items

Budget Overview P16590- MSD I P15590 Prototype Approximate Part Cost Purchased % Budget Spent $2000 $445.63 22.3% Purchased $2087.99 Item Cost $973.19

Overall Schedule