team 6: stephen heussler and nolan skop freely adjustable and accessible keyboard and arrow pad for...
DESCRIPTION
Client Background Sam from Hampton, CT 10 year old 5 th grade student Wants to fit in with other students Athetoid Cerebral Palsy – Non-verbal – Requires electric wheelchair – Typing is primary means of communicationTRANSCRIPT
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Team 6: Stephen Heussler and Nolan Skop
Freely Adjustable and Accessible Keyboard and Arrow Pad for Client with Cerebral Palsy
Sponsored by the National Science Foundation
![Page 2: Team 6: Stephen Heussler and Nolan Skop Freely Adjustable and Accessible Keyboard and Arrow Pad for Client with Cerebral Palsy Sponsored by the National](https://reader036.vdocuments.site/reader036/viewer/2022062523/5a4d1afc7f8b9ab0599846b5/html5/thumbnails/2.jpg)
Outline
Introduction– Background– Problem– Solution– Previous work done by others
Project Description– Design– Materials
Budget Conclusion
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Client Background
Sam from Hampton, CT 10 year old 5th grade student Wants to fit in with other students Athetoid Cerebral Palsy
– Non-verbal– Requires electric wheelchair– Typing is primary means of communication
![Page 4: Team 6: Stephen Heussler and Nolan Skop Freely Adjustable and Accessible Keyboard and Arrow Pad for Client with Cerebral Palsy Sponsored by the National](https://reader036.vdocuments.site/reader036/viewer/2022062523/5a4d1afc7f8b9ab0599846b5/html5/thumbnails/4.jpg)
Athetoid Quadriplegia
Permanent damage of cerebullum or basal ganglia
Affects all limbs– Involuntary Movements– Difficulty in Preciseness– Difficulty with speaking
and other motor functions
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Problem with Standard Keyboard
Horizontal position– Affects positioning of client’s hands
Keys too small– Multiple keys hit at a time– Damage to the keys
Not portable Slows down speed and efficiency of typing Not Durable
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Problem with Standard Mouse
Difficult to grab Requires fine movements of hands and
fingers Highly sensitive
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Solution
New Keyboard Design– Allow Sam to type faster and with greater ease– Reduce stress on hands and fingers
Replace Mouse with Arrow Pad
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Patent Research
FrogPadTM
- Sits horizontal to surface
- Small Keys - Multiple
characters per button- not user friendly
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Project Design
New Keyboard– Vertical Position– Large Keys– Simplified Layout– High Wear
Resistance– Portable
1 2 3 4
Q
A
Z
65
EW IUYR
0987
T
LKJH
C
GF
X
DS
PO
.MN
.
BV
ESC BACK SPACEINSERTDELTABSHIFT LOCK
ENTER
SPACE
7.6 cm
38.1 cm
3.8 cm
6.4 cm
27.9 cm
55.9 cm
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Project Design cont’d.
Rubber bottom for high coefficient of friction
Compressible Diagonal Member to absorb impact of powerful typing
38. 1 cm
2. 5 cm
3. 8 cm
34. 3 cm
17. 8 cm
Diagonal Member
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Project Design cont’d.
Cherry MX Switches– High Durability– Lifetime: 1^109
Operations
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Project Design cont’d.
Keyboard Control Board (PI Engineering)– 128 possible switches– Connects to CPU through
USB
Diagram provided by PI Engineering
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Project Design cont’d.
LED Backlighting– Enhance aesthetic
appeal of keyboard– Help our client fit in
Illustration of LED TLVP4200
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Project Design cont’d.
Arrow Pad– Cherry MX Switches– Attaches to Keyboard
Control Board
5.1 cm
1.3
cm 5.1
cm
17 cm
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Materials
Keyboard– PVC– Cherry MX Switches– LEDs– Compression Spring– Misc. Electrical Components– Misc. Mechanical Components
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Budget
Available budget is $750 provided by the National Science Foundation
Product Price Per Unit ($) # of Units Total
keyboard controller 59.95 1 59.95
PVC (1/8” x 24” x 48” white pvc sheet) 30.27 3 90.81
LEDs 0.299 40 11.96
30 pin receptacle 1.99 1 1.99
diodes (pack of 50) 5 2 10
key caps (set of 10) 4.5 6 27
cherry mx switches (10pack) 9.95 6 59.7
Estimated shipping costs. 30
Miscellaneous < 75
TOTAL 350 ± 50
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Conclusion
Accesible Keyboard and Arrow Pad– Faster, easier means of communication– Less strain on clients arms– Portable for classroom transport– High wear resistance - long lasting– LED backlighting– Custom built within budget