RAFI’s Smart Encoder Brings Software-Defined Haptics to Rotary Controls

RAFI has introduced the Smart Encoder, a rotary control that replaces the fixed springs, cams, and magnets of conventional encoders with feedback shaped almost entirely in software. Rather than locking a knob’s click pattern and resistance into a single mechanical design, the component lets engineers redefine that feel programmatically, opening the door to a rotary interface that can be tuned and even changed long after the hardware has shipped.

Programming the Feel of a Knob

At the core of the Smart Encoder is a set of haptic parameters that would traditionally be built into a knob’s mechanical construction: click behavior, torque, end stops, and return-to-center action. In this design, each of these parameters is governed by software, giving developers a way to match the tactile response to a specific function rather than settling for whatever a generic detent mechanism happens to provide.

That flexibility shows up in several concrete behaviors. The number and intensity of detents can vary within a single application, so a knob might feel coarse and deliberate for one function and fine-grained for another. End stops can be dynamic, shifting position based on context or operating mode rather than remaining at a fixed mechanical limit. An active return-to-center function mimics the resistance of a spring-loaded control without requiring an actual spring. Torque itself can be adjusted in real time, allowing resistance to rise or fall as a way of signaling state changes to the operator without any visual indication.

The same encoder hardware supports vastly different environments, including industrial equipment, agricultural machinery, and medical devices. Image used courtesy of RAFI

A Standardized Platform Across Industries

Because these behaviors live in software rather than tooling, RAFI positions the Smart Encoder as a platform rather than a single-purpose part. The same physical encoder can be reconfigured for markedly different environments, from industrial control panels and mechanical equipment to medical devices and off-highway machinery used in agriculture and construction. For a manufacturer supporting several product lines, that translates into one qualified component instead of a family of mechanically distinct encoders, each with its own tooling, sourcing, and validation overhead.

The approach also shifts some interface design work downstream. Instead of finalizing haptic behavior at the mechanical design stage, teams can adjust click count, torque curves, or end-stop logic during firmware development, or even after deployment, without touching the physical part. That kind of late-stage flexibility is particularly useful in equipment that serves multiple operating modes or user profiles, where a single fixed detent pattern rarely suits every scenario.

Encoders like this one tend to matter most in equipment where an operator’s hands stay busy, and eyes stay elsewhere, such as heavy machinery cabs, medical consoles, or industrial control stations. A knob that can communicate through torque and click resistance, rather than a screen glance, has a reasonable case for reducing mishandled inputs. Whether the Smart Encoder finds its footing in vehicle cockpits, hospital equipment, or factory floor controls will likely depend less on the concept than on how well its software tuning holds up against years of rotation. However, the underlying idea of a reconfigurable haptic interface is a welcome departure from the fixed-feel knobs that still dominate the space today.