For each spinner, he uses two ITR9608 (PDF) optical switches, or opto-interrupters. ... The “things” that pass between are the teeth of a 3D printed encoder wheel.

This requires an optical encoder—so find two SG-105 photo-reflective sensors, ... Assemble the spinner with screws from the VCR head, plug in the USB cable, and get scrolling.

Using an optical encoder similar to what you’d find in a mouse, the Prusa i3 MK3 could detect when filament had been inserted into the extruder.

The optical encoder demand in the U.S. is expected to account for 86.2% market share of North America through 2029. U.S. is anticipated to grow in upcoming years as the country is a huge market ...

In the age of robotics, automation, and precision engineering, success isn’t just about speed—it’s about accuracy. At the ...

Technavio market research analysts forecast the global optical encoder market to grow at a CAGR of over 11% during the period 2018-2022.