Arduino IR optocoupler speed sensor

The Arduino IR optocoupler speed sensor is a slotted infrared sensor module used to measure rotation speed. An infrared emitter and a detector face each other across a slot; when a slotted encoder disc or other object passes through and breaks the beam, the module output changes state. Counting these pulses with an Arduino lets you calculate RPM, wheel speed or distance travelled.

Arduino IR optocoupler speed sensor Specifications

• Sensor type: slotted IR optocoupler (photo-interrupter)
• Output: digital pulse each time the beam is interrupted
• Use with: slotted encoder discs on motor shafts or wheels
• Interface: power, ground and digital output pins for Arduino and other microcontrollers

Arduino IR optocoupler speed sensor Applications

• Measuring DC motor speed and RPM
• Wheel encoders for robot cars
• Counting objects or pulses on a conveyor
• Position and limit detection with a flag passing through the slot
• Robotics competitions and STEM projects

What's in the Box

• 1 × IR optocoupler speed sensor module

Tip: Connect the output to an Arduino interrupt pin, such as pin 2 or 3 on the Uno, and count pulses with attachInterrupt(). Divide the count by the number of slots in your encoder disc to get revolutions.

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