SKU: SENS-2928
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DFRobot Gravity Factory Calibrated Correlated Color Temperature CCT & ALS Meter for Professional Photography

₹3,489.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity CCT & ALS Meter is a factory-calibrated sensor module for precise measurement of Correlated Color Temperature (2700K-6500K) and ambient illuminance (10-10,000 Lux). It communicates via I2C or UART and is compatible with 3.3V/5V logic systems including Arduino, Raspberry Pi, and ESP32, making it ideal for professional lighting control and photography applications.

Features

  • High-precision measurement of Correlated Color Temperature (CCT) from 2700K to 6500K with ±10% accuracy.
  • Accurate ambient light sensing (ALS) across a 10 to 10,000 Lux range with low error margin (±5 Lux + ±10%).
  • Dual communication interface supporting both I2C and UART protocols for flexible system integration.
  • Low-power operation at 2.8mA, compatible with 3.3V to 5V DC power supplies.
  • Compact form factor (26mm x 24mm) designed for installation in space-constrained environments.

Out of stock

Description

The DFRobot Gravity CCT & ALS Meter integrates a high-performance spectral sensor and a dedicated signal conditioning circuit to deliver factory-calibrated readings of Correlated Color Temperature (CCT) and Ambient Light Sensor (ALS) illuminance. This eliminates the need for user calibration and ensures measurement consistency from unit to unit. The sensor’s digital output provides stable, noise-resistant data via I2C or selectable UART communication.

Engineered for professional environments, the module operates reliably within an industrial temperature range of -10°C to 60°C. Its precision is critical for applications requiring strict adherence to lighting standards, such as color grading in photography and videography, or maintaining consistent ambient conditions in galleries and studios. The module’s Gravity-series 3-pin interface simplifies connection to a wide range of microcontrollers and single-board computers.

Key Features

  • Factory-calibrated CCT and ALS sensor for out-of-the-box accuracy and repeatability.
  • Dual digital interface (I2C and UART) offers protocol flexibility for different host controllers.
  • Wide operating voltage range (3.3V to 5V DC) ensures compatibility with most development platforms.
  • Low current consumption (2.8mA typical) enables use in portable and battery-powered setups.
  • Compact PCB design (26mm x 24mm) with standard Gravity-series connector for easy integration.
  • Stable performance across an extended operating temperature range of -10°C to 60°C.

Applications

  • Professional photography and videography studios for on-set lighting measurement and white balance calibration.
  • Museum, gallery, and archival lighting control systems to protect sensitive artifacts from incorrect illuminance or CCT.
  • Smart home and building automation for dynamic color-tunable LED lighting systems.
  • Industrial quality control stations for verifying display backlight uniformity and color temperature.
  • Research and development setups for environmental studies and human-centric lighting experiments.

Technical Specifications

BrandDFRobot
Supply Voltage3.3V ~ 5V DC
Operating Current2.8 mA (typical)
Communication InterfaceI2C, UART
CCT Measurement Range2700K to 6500K
CCT Accuracy±10%
Illuminance (ALS) Range10 to 10,000 Lux
Illuminance Accuracy±5 Lux + ±10%
Operating Temperature-10°C to 60°C
Dimensions (PCB)26mm x 24mm (approx.)

Frequently Asked Questions

What is the communication protocol for this CCT sensor?

The module supports two digital communication protocols: I2C and UART. The interface is selectable, providing flexibility for integration with microcontrollers like Arduino (using Wire library for I2C) or systems requiring a simple serial connection. The default address and baud rate are documented in the product wiki.

What is the operating voltage range, and is it 5V tolerant?

The sensor operates from 3.3V to 5V DC. The logic levels on the I2C/UART lines are compliant with the supplied VCC, making it safe to connect directly to both 3.3V and 5V logic microcontrollers without requiring a level shifter, provided the supply voltage matches the host's logic level.

Does this sensor require calibration before use?

No, the DFRobot Gravity CCT & ALS Meter is factory calibrated. The correlated color temperature and illuminance readings are accurate out of the box, eliminating the need for user calibration. This ensures consistent performance and measurement reliability across different units.

What is the measurement refresh rate or sampling frequency?

The sensor provides new data with each read command via I2C or UART. The effective sampling rate is determined by the host controller's read speed and the selected communication protocol. For typical I2C operations, multiple readings per second are easily achievable for dynamic lighting monitoring.

Package Includes

  • 1 x DFRobot Gravity Factory Calibrated Correlated Color Temperature (CCT) & ALS Meter Module

Additional Information

Weight 0.015 kg
Dimensions 6 × 6 × 3 cm