IR Photoelectric Encoder Sensor 4Pin
The IR Photoelectric Encoder Sensor is a compact optical detection module that uses an infrared emitter and receiver positioned across a slotted groove. When a slotted disc, rotating wheel, or other object passes through the groove, it interrupts the infrared beam and produces electrical signal changes. These signals can be counted by a microcontroller to measure rotational speed, movement, or the number of passing objects.
The module uses an LM393 comparator to process the received optical signal and provide digital output, with an additional analog output for signal monitoring. An onboard potentiometer allows sensitivity adjustment, while the indicator LED provides a visual indication of the detection state. It can be connected to Arduino, ESP32, and other compatible control systems for robotics, motor monitoring, and automation projects.
Features:
- Digital Output: Delivers a clean TTL digital signal (0 and 1).
- LOW state when the sensor is not obstructed (LED indicator lights up).
- HIGH state when the sensor is obstructed (LED indicator turns off).
- Adjustable Sensitivity: Includes an on-board potentiometer for fine-tuning sensitivity to meet specific application requirements.
- Low Power Consumption: Operates with a current consumption of only 1.4 mA, ideal for energy-efficient projects.
- Wide Voltage Range: Compatible with power supplies from 3.3V to 5.0V, ensuring flexibility in various circuits.
- Compact Design: Measures 32 x 14 x 10 mm, facilitating easy integration into space-constrained projects.
- Mounting Friendly: Equipped with 3 mm diameter mounting holes for straightforward installation.
- Analog Output: Provides an analog output (AO) alongside digital output for more precise measurements.
- Strong Driving Ability: The digital output can drive more than 15mA, enabling reliable interfacing with microcontrollers and other devices.
Specifications:
| Parameter | Value |
|---|---|
| IC | LM393 (IR Photoelectric Encoder) |
| Power Supply | +3.3V ~ +5.0V |
| Current Consumption | 1.4 mA |
| Output Signal | TTL digital (0 and 1) |
| Operating Temperature | 0°C ~ +70°C |
| Dimensions | 32 x 14 x 10 mm |
| Slit Groove Width | 5 mm |
| Mounting Hole Diameter | 3 mm |
| Weight | 3 g |
Applications:
- Motor Speed Detection: Measures the rotational speed of motors or wheels by counting interruptions from a slotted disk, ideal for robotics and automation projects.
- Object Counting: Counts items passing through the sensor’s 5 mm groove, such as pellets in a chute or products on a conveyor belt.
- Position Limit Detection: Detects when an object reaches a specific position, useful in mechanical systems or automated setups.
- Alarm Systems: Can be interfaced with relays, limit switches, or active buzzers to trigger alarms when an obstruction is detected.
- Robotics: Supports position encoding and, with adaptations, line-following applications in hobby robotics projects.
Packages Included:
- 1 × IR Photoelectric Encoder Sensor 4Pin.
