TCS34725 RGB Color Sensor Module with I2C Interface

Product Description

The TCS34725 RGB Color Sensor Module is a high-sensitivity digital color sensing module designed to detect and measure red, green, blue (RGB), and clear light intensity. Based on the TCS34725FN sensor, it provides accurate digital color data through an I2C communication interface, making it easy to connect with Arduino, Raspberry Pi, STM32, and other compatible microcontrollers.

The module features a built-in infrared (IR) blocking filter that helps reduce unwanted infrared components and improves color measurement accuracy under different lighting conditions. An onboard LED provides adjustable illumination for the target surface, helping achieve more consistent color detection.

With 16-bit resolution per RGBC channel, high sensitivity, and a wide dynamic range, the TCS34725 is suitable for applications such as color sorting, product identification, color classification, ambient light sensing, and calibration systems.

Features

• Based on TCS34725FN color sensor
• Detects Red, Green, Blue, and Clear (RGBC) light values
• 16-bit resolution per channel
• High sensitivity and wide dynamic range
• Built-in IR blocking filter
• Digital output through I2C interface
• Requires only a few pins for communication
• Measures ambient light intensity
• Onboard LED for target illumination
• LED brightness can be controlled through PWM
• Supports programmable light-intensity interrupts
• Adjustable upper and lower interrupt thresholds
• Built-in voltage-level translator
• Compatible with 3.3V and 5V systems
• Suitable for Arduino, Raspberry Pi, STM32, and other controllers
• Compact and easy-to-integrate design

Specifications

Design and Construction

The TCS34725 module combines the TCS34725FN color sensor, infrared blocking filter, onboard LED, voltage-level translator, and supporting circuitry on a compact PCB.

The integrated IR filter blocks a significant portion of unwanted infrared light, helping the sensor provide more reliable RGB measurements. The onboard LED illuminates the surface being measured and can be controlled using PWM to adjust the illumination level.

The module supports both 3.3V and 5V systems, making it convenient for use with a wide range of development boards and microcontrollers.

Working Principle

The TCS34725 detects light reflected from a target surface and separates the received light into red, green, blue, and clear channels. The sensor converts the detected light into digital values using its integrated ADC.

These RGB values are transmitted to the connected microcontroller through the I2C interface, where the data can be processed to identify or classify the detected colour.

The clear channel provides overall light-intensity information, while the IR blocking filter helps minimize unwanted infrared components. The onboard LED can provide controlled illumination to improve consistency when measuring nearby objects.

I2C Communication

The module communicates with the host controller using the I2C bus, requiring only the appropriate power, ground, SDA, and SCL connections.

The digital RGB and clear-channel values can be read by compatible microcontrollers and processed through software to determine colour information, measure ambient illumination, or trigger specific actions based on detected colour.

It can be integrated into projects using platforms such as:

• Arduino
• Raspberry Pi
• STM32
• Other 3.3V/5V-compatible microcontrollers with I2C support

Color Detection

The sensor provides separate digital readings for:

• Red (R): Measures the red component of detected light.
• Green (G): Measures the green component.
• Blue (B): Measures the blue component.
• Clear (C): Provides overall light-intensity information.

The RGB readings can be processed by a microcontroller to identify different colours and classify objects according to their measured colour values.

Applications

• Color Sorting: Detects and separates objects based on colour.
• Product Identification: Identifies products or components using colour information.
• Color Classification: Classifies objects according to their RGB characteristics.
• Ambient Light Sensing: Measures surrounding light intensity.
• Light Calibration: Useful for light measurement and calibration systems.
• Industrial Automation: Can be integrated into colour-based inspection and sorting systems.
• Robotics: Enables robots to detect and respond to different colours.
• Arduino Projects: Suitable for DIY colour detection and automation projects.
• Raspberry Pi Projects: Useful for computer-vision and colour-sensing applications.
• Educational Projects: Suitable for learning RGB sensing, I2C communication, and digital sensors.
• Smart Devices: Can be used in systems requiring colour or ambient-light detection.

Package Includes

• 1 × TCS34725 Color Sensor Module
• 1 × PH2.0 6-Pin Wire, 20cm

Product Disclaimer

Product images are provided for reference and may vary slightly from the actual product in terms of colour, dimensions, component placement, LED appearance, or PCB markings depending on the manufacturing batch.

For accurate colour measurement, the sensor should be positioned at a suitable distance from the target. The recommended measuring distance is approximately 2mm, and measurement results can vary depending on the target surface, ambient lighting, and illumination conditions.

Please verify the required I2C connections, operating voltage, and electrical specifications before connecting the module to a development board.