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Adapted Ergonomic Computer Mouse

Madison Mice: Jacob Parsons, Kira Nevin, Izzy Castillo, Riley Smith, Austin Latessa, Mike Corra, Alex Frame

Client: Brad Droessler and Dr. Christopher Luzzio

Instructor: Caitlin Randell SA: Riley Hughes

Inter Egr 170 Design Practicum, Spring 2022

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Abstract

Figure A: CAD of left-hand component
Figure B: Top-view of CAD of right-hand component
Figure C: Side view of CAD of right-hand component
Figure D: Top-view of final right-hand component
Figure E: Top view of left-hand component
Figure F: Hand in ergonomic position on right-hand component
Figure G: Bottom view of right-hand component and optical sensor

Problem Statement

References

Discussion

Testing

Material Costs

Final Design

Design Specifications

Motivation

Acknowledgements

Background Research

There are several styles of adaptive computer mice that currently exist. These can range from a simple ergonomic mouse shape to a trackball design that functions in a very different way. An ergonomic mouse is canted in a way that allows for the user to keep their hand in their natural position while using it. Moderate adaptations to these devices may provide the type of accommodation that meets an individual's needs and desires to more efficiently and effectively operate a computer [2]

The mouse must move within 7”x7”x3” zone.
Requires ergonomic structure for minimal wear on hand dexterity.
Hand operated, cursol control, and side buttons to allow for the same functionality of a standard computer mouse.
The whole mouse must connect to one USB port.

Wiesendanger M, Serrien DJ. Neurological problems affecting hand dexterity. Brain Res Brain Res Rev. 2001
Martin G. et al. Computer Assistive Technology for People who Have DisabilitiesComputer Adaptations and Modifications. 2004

Christian Martinez, Dr. Tracy Puccinelli, Caitlin Randell, Riley Hughes, Kevin Guenthner, Dr. Christopher Luzzio, and Brad Droessler

A shake test was conducted with the left and right components of the mouse wherein a team member shook them vigorously for 30 seconds. Within the 30 seconds, each component was shaken for 15 seconds clockwise, subsequently followed by 15 seconds of counterclockwise motion. The test passed 5/5 times.

left-hand component shaken mid-air (handheld)
right-hand component shaken mid air and on mouse pad (situated on a surface)

A button press test was conducted wherein the buttons on the left-hand component were repeatedly pressed in a previously established series to ensure that each button functioned and did not stick. The test passed 5/5 of the times it was conducted.
An optical sensor test was completed, wherein the mouse was used to guide the cursor through a computer maze. It passed 5/5 times.

This poster documents the engineering design and fabrication process that the Madison Mice underwent to create an adapted ergonomic computer mouse for Brad Droessler and Dr. Christopher Luzzio.

190mm

105mm

51.9mm

Item Name	Vendor/Location	Cost	Material/Details
Mouse Frames	Makerspace	$19.68	3D Printed TPLA
Mouse Wiring	Amazon	$35.00	Base of ergonomic body
Momentary Push Buttons	Amazon	$10.00	Push buttons
Wires	Makerspace	$2.00

Total: $66.68

Our client has reduced hand dexterity and needs an adapted computer mouse to reduce the strain of standard usage. The focus of this mouse will be on its ergonomic characteristics while maintaining full mouse functionality.

5.4 million Americans live with some form of paralysis and may lack the hand dexterity to use a standard computer mouse [1]. The ability to operate a computer has become crucial for work in most fields. Because these poorly designed mice make online tasks much more difficult for these people, they may not be able to do all that they could be online. The ergonomic, adapted design hopes to help these people feel comfortable while using a computer mouse for prolonged periods of time.

Testing provided viability for our product and its capabilities

Optical sensor test was conducted with a computer maze program and passed five out of five trials
Shake test was conducted by each team member, yielding passing results for five out of five trials.

Improvements can be made to the overall product

The aesthetic and comfortability of the components could be improved by an acetone bath to smooth their surfaces
The left-hand component could have been compressed and refined with the replacement of the breadboard with the protoboard
The bottom surface of the right-hand component could have been designed to be used without a mouse pad for convenience

100mmx65mmx50mm

13mm

Poster Requirements

Please maintain the format of this template. Feel free to choose other colors that work well on posters: blue, green, purple, gray, or the dark red in this template. Colors must be dark with white text or light with black text. All boxes/titles are aligned. Text should be 24 font size or larger, except for references section (this text can be smaller). All text should be concise bullets except abstract and problem statement. Cite sources by using superscript numbers and listing in the order they appear in the references section. All figures must have captions!

Title Box--Use a descriptive title, add your team/client/instructor/SA information

Abstract--Concise summary of poster

Motivation--Change this subtitle to describe content. This should include relevant pictures. Summarize any Global or Societal implications of this problem with statistics when appropriate.

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Design Specifications--List the most critical design specifications

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