HapKnob -- A Motorized Shape-changing Haptic Knob Interface

TL;DR

This study aims to investigate an innovative haptic solution for interacting with graphical user interfaces, using a motorized shape-changing rotary knob interface, HapKnob, which has been developed, achieving seven distinctive shape configurations and various force feedback renderings.

Abstract

The absence of physical interfaces creates challenges when interacting with touchscreen technology. This study aims to investigate an innovative haptic solution for interacting with graphical user interfaces. A motorized shape-changing rotary knob interface, HapKnob, has been developed, achieving seven distinctive shape configurations and various force feedback renderings. HapKnob presents a compact design and can provide additional configurations and combinations based on user needs. The anticipated results hold the potential to advance the development of future user interfaces, especially in situations where visual interaction is unavailable.

Figures (2)

• Figure 2: a) The proposed motorized shape-changing haptic knob, HapKnob, exhibits 4 fully expanded fins driven by Pulley A; b) Breakout view of the coaxial expansion pulleys mechanism; c) Geometry of slots cut on Pulley B, with purple geometries indicating the locking position; d) Demonstration of the 6 unique shape configurations that HapKnob can achieve.
• Figure 3: GUI built to monitor the system status. The red dot moves along the blue circle to display the knob's position, the green bar indicates torque intensity, and the button array enables users to set and reset modes.