It explains how slot-type optocouplers work, how this module converts mechanical motion into clean digital pulses, how to calculate speed and RPM correctly, and how to interface it reliably with Arduino for motors, wheels, encoders, and rotating machinery. This tutorial is a comprehensive, practical guide to the Speed Sensor / Tacho Sensor (Slot-Type Optocoupler) (Leobot Product #245). This module features a reliable performance and a secure connection, making it ideal for detecting and sensing speed. + Add to Cart Loading. Detect and sense speed. Use imported groove coupler sensor Groove Width: 5mm Output state indicator lights Obscured output high; unobstructed output low The comparator output, the signal is clean, the waveform, driving ability, more than 15mA Operating Voltage: 3. 3V-5V, for Arduino MCU with Dupont Cable (5 Pieces) Sold by DAOKAI EU and sent from Amazon Fulfillment. One of these items is dispatched sooner than the other. This module is designed for detecting objects passing through its slot, making it suitable for applications such as speed. The DO output interface can be directly connect to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect.
