Double speed measuring module encoder photoelectric pulse output module

The Double speed measuring module is a two-channel photoelectric encoder sensor that measures the rotation speed of two wheels or motor shafts at once. Each channel uses a slotted optical sensor (photo-interrupter): when the slots of an encoder disc pass through the gap and break the light beam, the module outputs a pulse. Counting these pulses with an Arduino or ESP32 gives the speed, RPM or distance of each wheel, which is ideal for two-wheel-drive robot cars.

Double speed measuring module Specifications

• Channels: 2 (one per wheel or motor)
• Sensor type: slotted photoelectric sensor (optocoupler / photo-interrupter)
• Output: digital pulse output on each channel
• Use with: slotted encoder discs on motor shafts or wheels
• Interface: power, ground and pulse output pins for microcontrollers

Double speed measuring module Applications

• Measuring the speed of both drive motors on a robot car
• Distance and odometry for wheeled robots
• Matching left and right wheel speeds so a robot drives straight
• Counting objects or rotations on small machines
• Robotics competitions, school clubs and STEM projects

What's in the Box

• 1 × double speed measuring module

Tip: Connect each output to an interrupt pin, such as pins 2 and 3 on the Arduino Uno, and count pulses with attachInterrupt(). Divide the count by the number of slots in the encoder disc to get revolutions, and mount the module so the disc spins freely in the centre of each slot.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.