Redesigning the interface standard for a name-brand appliance line (single, mid, and double-range ovens), delivered as a full UI specification.
Heuristic analysis of the predicate interface surfaced improper use of primary functions, excessive cognitive load, and too many hidden functions.
"How might we create an interface that makes main functions readily available, guides the user, and provides expected transitions and intuitive inputs?"
Preliminary concepts paired user inputs with their corresponding information to cut error rates and cognitive load, then went through multiple refinement rounds across use cases and user types.
Robust testing of layout, input semantics, and displayed information caught a critical problem: users missed "set temperature" as the button to start the oven and accidentally turned it off by hitting on/off twice. We course-corrected before the spec was finalized.
VFD and LED display treatments were explored for optimal readability of target and actual temperature before the final concept was specified and transferred to the client for development.
