Designing for One Project

Meeting 2: Presentation

To Do
Write letter to holly and john — David
Set up arduino —- Sean and Yong
Set up tube + potentiometer —- Sean and Yong
Emulator + iPac —- David

Things to check
How to get 360 degrees
How long Steven can hold the button
How fast Steven can click the button
How many times Steven can click the button before being tired
How hard Steven can push down on FSR with thumb, feet
How exactly Steven can control switches.
Values from FSR and Accelerometer and Potentiometer

Research: Behind Head, Feet, Thumb, Fingers, Puff
Switches
FSR —- Sean and Yong
Photocell —- Sean and Yong
IR —- Sean and Yong
Arduino —- Sean and Yong
Tilt switch —- Sean and Yong
Accelerometer —- Sean and Yong
Stretch sensor —- Sean and Yong
Pipe + linear potentiometer —- Sean and Yong ask ITP List
Mic —- Sean

Toggle Switch —- David
Push button —- David
Reed switch + magnet —- David
Small single switch —- David
Potentiometer —- David
Rocker switch —- David
iPac —- David
Small joystick —- David will ask Marianne/John
Hall effect (analog?) —- David will ask ITP List
Large single switch —- David will ask Marianne/John
Puff (if available from Holly) —- David will ask Holly or John/Marianne

Findings
FSR (0 – 255)
Toe 0-180
Heel 0-148
Right thumb (aver 25, max 60)
Left max 160 (aver 124)
Head 0-27 (if head is on a switch: 5-35)

Testing and findings for switches:
Dexterity of thumbs has diminished from 15 minutes to 3 minutes in 2 weeks.
Much easier to raise legs than push down on legs (FSR: max 70/250)
Thumb speed: 1 second intervals
Metal toggle switch unusable
Small red push button should be used as max pressure with thumbs
FSR buttons on headrest definite possibility
Hair switch located under right armrest
Small joystick being used for power chair - unable to reposition thumb
Very interested in using voice-activated system
Open to Wii and PC games: but level of graphics is his concern