1. Silver Snake Speaker System Team Silver Snakes Jeff Kelly, Matt Ingel, Ian Picariello November 22, 2011 Capstone Proposal Don Clark 16.399

2. Client Background Capstone Proposal Don Clark 16.399 Client’s name: Ken (Pooch) Age: Late 20’s Attends the Bridgewell day program in Medford, Massachusetts He has spastic cerebral palsy (Hypertonia) and is non-verbal Needs a communication system he can use in his bed or wheelchair

3. Objectives Capstone Proposal Don Clark 16.399 To create a speaker system for patients with CP To give the user a means of communication To give the user the ability to customize their product Easy to operate for any user Portable and durable for use in any configuration (wheelchair, bed, etc)

4. Functional Diagram Capstone Proposal Don Clark 16.399

5. Block Diagram Capstone Proposal Don Clark 16.399

6. Specifications Capstone Proposal Don Clark 16.399 Switch Panel (12”x8”x2”) ◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V) ◦ LCD Display (4.5”x3” 5V 2.5mA 12.5mW @ 5V) ◦ Total power consumed 13.6mW (only includes PIC and display) ◦ Rechargeable Battery Pack (6V 1600mAh = 9.6Wh) ◦ Panel can run for 705.88 hours (based on 9.6Wh and 13.6mW consumed) Main Unit (12”x10”x8”) ◦ ISD (4.5-5.5V 25mA 125mW @ 5V) ◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V) ◦ Amplifier (4-18V 4mA 20mW @ 5V) ◦ Total power consumed 271.1mW (only includes 2 ISDs, PIC, and amplifier) ◦ 120VAC-5VDC adaptor (plugged into wall) Speaker (3.6” diameter 1.1” thickness) ◦ 93 decibel output

7. Specifications Capstone Proposal Don Clark 16.399 Chair Unit (12”x8”x8” 45  tilt) ◦ ISD (4.5-5.5V 25mA 125mW @ 5V) ◦ PIC (4.5-5.5V 220µA 1.1mW @ 5V) ◦ Amplifier (4-18V 4mA 20mW @ 5V) ◦ LCD Display (4.5”x3” 5V 2.5mA 12.5mW @ 5V) ◦ Total power consumed 284.7mW (only includes 2 ISDs, 2 PICs, amplifier, and display) ◦ Rechargeable Battery Pack (6V 1600mAh = 9.6Wh) ◦ Unit can run for 33.72 hours (based on 9.6Wh and 284.7mW consumed)

8. Gantt Chart Capstone Proposal Don Clark 16.399

9. Gantt Chart Capstone Proposal Don Clark 16.399

10. Cost Analysis Capstone Proposal Don Clark 16.399

11. Cost Analysis Capstone Proposal Don Clark 16.399