Iteration
We developed our prototype across four complete iterations. While the four iterations were not identical, user testing and design refinement were common across all. Early iterations focused more exploratory methods like domain research and brainstorming, while later iterations relied heavily on refinement methods like Think Alouds and Operational Readiness Tests. As rapid prototy ing methods like sketching and wireframing tapered off, software and hardware development ramped up.
First Iteration
To prepare for our first Operational Readiness Test (ORT), we completed a second complete cycle of research, design, and development. We began the iteration by conducting a short literature review to gain a deeper understanding of existing work in wearable devices for space exploration. The design process followed with brainstorming and concept validation sessions that eventually led to a more refined design and HTML prototype. The following discusses in detail the different phases involved in the creation of the interface, as well as the updated features of the second iteration of our prototype.
See the Interactive Demo
Second Iteration
We identified the issues and insights from the first ORT to revise and improve the operation of the second ORT. In addition, we iterated on the design of the prototype and shifted from an HTML web- based prototype to a native Android application on a small Android internet tablet. In parallel, we started hardware development for the device, using an Arduino and a bluetooth module to send data from external push buttons.
See the Interactive Demo
Third Iteration
We identified the issues and insights from the first ORT to revise and improve the operation of the second ORT. In addition, we iterated on the design of the prototype and shifted from an HTML web- based prototype to a native Android application on a small Android internet tablet. In parallel, we started hardware development for the device, using an Arduino and a bluetooth module to send data from external push buttons.
Final Iteration
In preparation for Landing Day, we further refined our prototype. Specifically, we finished the hardware implementation and installed every component (dis- play, buttons, micro-controller, bluetooth, etc.) onto the cuff-mounted prototype.
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Design Process Overview
