Hot press machine user interface design based on usability evaluation

Abstract

The success of a tool depends on user satisfaction, and users will feel satisfied if they can do their work effectively and efficiently. The Hotpress machine has been developed for the 3rd generation and is currently a tool for processing plastic waste into a substitute for plywood. This research aims to evaluate the usability level of the Hotpress G3 machine and design a user interface based on the evaluation results to make it easier for users to operate the machine. The Nielsen Attributes of Usability (NAU) Questionnaire is used to evaluate a machine's usability level, and Retrospective Think Aloud (RTA) is used to identify problems in user interaction with a product or system. The results obtained from this research are that based on the five attributes used, the Hotpress G3 machine has a low rating in four usability aspects based on the Nielsen model. Based on the results of the usability evaluation, a recommended user interface was designed, namely adding information to each control button according to its function, adding a sensor to determine whether the heating switch is on or not and providing information about the maximum temperature by adding an alarm to the engine box.