SKU: SENS-3182
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HS-S22A Grayscale Sensor Module - 3.3-5.5V Digital Output

₹79.00 (Inclusive of all taxes)
Out of Stock

The HS-S22A Grayscale Sensor Module is a compact optical sensor designed for precise detection of surface reflectivity and grayscale levels. Operating on a 3.3-5.5V DC supply, it provides a digital output signal ideal for integration with microcontrollers like Arduino, ESP32, and Raspberry Pi for robotics and automation tasks.

Features

  • High-precision grayscale detection via reflected light intensity measurement
  • Wide operating voltage range of 3.3V to 5.5V DC for flexible system integration
  • Fast digital output signal for real-time surface and line tracking applications
  • Compact PCB design (31mm x 36mm) with standardized 2.54mm pin header interface
  • Includes pre-drilled mounting holes (3.2mm aperture, 10mm spacing) for secure installation

Out of stock

Description

The HS-S22A operates on a principle of active optical reflectance sensing. An integrated LED emits light onto a target surface, and a photodetector measures the intensity of the reflected light. This analog reading is internally conditioned and compared against a preset threshold to generate a clean digital output signal, enabling reliable discrimination between light and dark surfaces or varying shades of gray.

Engineered for stability, the module features a robust circuit design that minimizes noise and provides consistent performance across its specified voltage range. Its compact form factor and straightforward three-wire interface (VCC, GND, Signal) make it a practical choice for embedded systems, educational robotics platforms, and industrial automation prototypes requiring non-contact surface inspection.

Key Features

  • High-accuracy optical reflectance sensor for grayscale and surface contrast detection
  • Integrated signal conditioning circuitry for clean, noise-resistant digital output
  • Broad compatibility with 3.3V and 5V logic microcontrollers and development boards
  • Durable PCB construction with solder mask protection for reliable operation
  • Optimized LED-photodetector pair for consistent performance in varied ambient light conditions
  • Straightforward three-pin interface (VCC, GND, SIG) for rapid prototyping and integration

Applications

  • Line-following and edge detection for autonomous mobile robots and AGVs
  • Surface inspection and material sorting systems based on reflectivity contrast
  • Precision positioning and alignment feedback in automated assembly machinery
  • Educational robotics platforms for teaching sensor-based control logic
  • Non-contact paper or print quality detection in light industrial automation

Technical Specifications

Model NumberHS-S22A
Sensor TypeOptical Grayscale / Reflectance
Operating Voltage3.3V to 5.5V DC
Output SignalDigital (High/Low)
Interface3-pin 2.54mm pitch header (VCC, GND, SIG)
PCB Dimensions (L x W)36mm x 31mm
Module Height18mm (including components)
Mounting Holes3.2mm diameter, 10mm center-to-center spacing
Module Weight4g (approx. 0.004 kg)

Frequently Asked Questions

What is the operating voltage range for the HS-S22A sensor?

The HS-S22A grayscale sensor module operates from 3.3V to 5.5V DC. This wide range allows for direct compatibility with both 3.3V logic microcontrollers (like ESP32 or Raspberry Pi) and standard 5V systems (like Arduino Uno), providing significant flexibility in system design without requiring a level shifter.

How do I interface the HS-S22A with an Arduino or other microcontroller?

Interface is straightforward via its three-pin 2.54mm header. Connect VCC to your system's 3.3V or 5V supply, GND to ground, and the SIG (Signal) pin to any digital input pin on your microcontroller. The module outputs a digital HIGH/LOW signal based on the detected surface reflectivity compared to its internal threshold.

What is the sensing principle of this grayscale sensor?

It uses active optical reflectance sensing. An onboard LED illuminates the target surface, and a photodetector measures the intensity of the reflected light. Internal circuitry converts this analog measurement into a clean digital output, enabling it to distinguish between light and dark areas or different shades of gray effectively.

Can this sensor be used for line following on a black/white track?

Yes, the HS-S22A is commonly used for line-following robotics. By positioning the sensor close to the track surface, its digital output will switch states when passing from a white background to a black line (or vice-versa), providing a clear signal for a robot's control logic to follow a path accurately.

Package Includes

  • 1 x HS-S22A Grayscale Sensor Module

Additional Information

Weight 0.004 kg
Dimensions 3.6 × 3.1 × 1.8 cm