What Are The Two Types of Rotary Encoders?

1. Incremental Encoders: Output a series of pulses that represent relative motion (e.g., rotation direction and speed). They do not provide absolute position information—only changes from a starting point.

2. Absolute Encoders: Output a unique digital code for every position (e.g., Gray code or binary), allowing them to directly report the absolute angle of rotation, even after power loss.

Rotary encoders come in two flavors, each with its own superpower. First up: incremental encoders. Think of them as odometers—they count steps from where you started. Spin right, numbers go up; spin left, they go down. Great for tracking speed or how far something’s moved—simple, reliable, like a trusty notebook.

Then there’s absolute encoders, the memory masters. Every position gets a unique code, like a fingerprint. Even if the power dies, they remember exactly where they are—no resetting needed. Perfect for when you need to know exactly where you stand, not just how far you’ve walked.

At SHHXGD, we craft both. Because sometimes you need to track the journey, other times you need to know the exact spot. Either way, our encoders have your back.