Haptic knob

Video editors appreciate an intuitive interface with which they can readily and intuitively perform functions such as fast forward, rewind, frame stepping, etc.

A client who supplies video editing consoles had the idea to replace four passive mechanical knobs with knobs connected to motors and a microcontroller. This facilitated different video editing tasks. For example, a knob could be programmed to emulate the feeling of a spring return to center when fast forwarding or rewinding and then be converted to a 30 detent knob for frame by frame stepping.

A fun part of this project was using the graphical interface which made it easy to draw a curve of how the knob should feel and then trying it out on the knob.

Video editing console

Video editing console

Power supply, motor driver boards and two motors connected by belts to knobs

Power supply, motor driver boards and two motors connected by belts to knobs

Microcontroller and motor driver boards

Microcontroller and motor driver boards

Controller board and a motor driver

Controller board and a motor driver

Microcontroller board

Microcontroller board