1. Capstone Design A Pedagogical Tool for Usability Science Susan Beckhardt Advisors: Chris Fernandes Aaron Cass James Hedrick

2. Outline Introduction to Usability Science Project requirements Design Future work Questions

3. Introduction What is Usability Science?

4. The Project A system to simulate control panels and record test data

5. Requirements Simulate the layout of a control panel repositionable Programmable connect inputs to desired outputs Log events

6. Additional Requirements Repositionable I/O devices (widgets) Ease of physical setup Easy to update/modify Easy to create new widgets

7. Additional Desired Features (“wish list”) Easy to program (with little computer experience) Aesthetics

8. Design I/O Widgets: Simple input or output devices (switches, lights, etc.) Controller Event Logger Controller- widget communication via ethernet

9. Widget

10. Controller State Machine User program defines state machine Controller loop: Wait for an input signal Change outputs based on input and state Change state Send input/output/state change data to event logger

11. Event Logger Receives/records messages from controller: input received output changed new state add time stamp

12. TINI Networked Microcontroller controls each widget runs Java built-in Ethernet capability

13. Results Working with two TINI Networked Microcontrollers Fully implemented widget

14. Future Work Implement full controller and event logger Create more widgets!

15. Questions?