Computer Input Device for Individual with MD Presented by: Vince Mi – Communications Kuya Takami – BSAC Hyungjin Kim – BWIG Nathan Werbeckes – Team Leader Advisor – Prof. John Webster Clients – Dr. Mary Sesto and Richard Kunz

Outline Background Problem Statement Client Requirements Design Requirements Forearm Support Designs Mouse Control Designs Future Work

Background bed-ridden with Muscular Dystrophy. Can use only three fingers for each hand. Motion range: circles 1 cm in diameter.

Current Device Trackball Slippery Buttons are inconvenient Setup time is too long

Problem Statement Minimize set-up time Make design easier to use More sensitive to client’s limited motor control More comfortable support More durable support

Client Requirements More accessible mouse control device Wrist and forearm support Comfort and safety Quick set-up time Adjustable

Design Requirements Connect via USB Easy to set-up Great sensitivity Easy to grip buttons Should not chafe skin

Adjustable Platform Pros Easy to adjust height Precise height Stable Cons Bulky Heavy

Blocks Pros Cons Simplicity More components Easy to construct Non-precise height http://img.alibaba.com/

Adjustable Legs Pros Easy to adjust Precise height Cons Unstable Hard to construct www.sammonspreston.com/ca/Supply

Design Matrix – Forearm Support Weight Adjustable Platform Blocks Adjustable legs Stability 0.3 9 10 6 Ease of adjustment 8 3 Comfort/Safety 0.2 7 Ease of construction 0.1 5 Cost Result 8.1 7.7

Joystick Pros Great sensitivity Easy to control Cost Cons Setup time http://kotaku.com/gaming/atari/

Tablet Pros Easy to modify Easy to setup Cons More movement Cost www.blaptops.com/computers/hacks/

Pointing Stick Pros Great sensitivity Compact Cons Cost Hard to control www.fief.org/sysadmin/

Design Matrix – Input Device Weight Joystick Tablet Pointing Stick Sensitivity 0.3 7 5 8 Ease of Operation 4 Setup Time 0.2 Cost 0.1 3 Ease of Construction 6.5 5.2 5.9

Future Work Proposed Design: Different height joysticks Forearm Support: Adjustable Platform Input Device: Joystick Different height joysticks Left-hand clicking Finalize support design Purchase & personalize prototype

References Tablet: www.blaptops.com/computers/hacks/ Pointing stick: www.fief.org/sysadmin/ Joystick: http://kotaku.com/gaming/ Blocks: http://img.alibaba.com/ Adjustable legs: www.sammonspreston.com/ca/Supply