SKU: SENS-3160
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Adafruit MAX44009 Wide-range Lux Light Sensor - STEMMA QT / Qwiic

₹2,149.00 (Inclusive of all taxes)
Out of Stock

The Adafruit MAX44009 is a high-precision ambient light sensor module with an ultra-wide 22-bit dynamic range from 0.045 lux to 188,000 lux. Featuring a built-in 3.3V regulator and logic level shifting, it is directly compatible with 3.3V and 5V systems like Arduino, Raspberry Pi, and other microcontrollers via its I2C interface and STEMMA QT / Qwiic connectors.

Features

  • Ultra-wide 22-bit dynamic range from 0.045 lux to 188,000 lux
  • Direct lux output via I2C interface; no manual gain or unit conversion required
  • Built-in auto-ranging ensures stable readings across extreme lighting conditions
  • Integrated 3.3V regulator and logic level shifting for 3.3V/5V system compatibility
  • Plug-and-play connectivity with STEMMA QT and Qwiic connector systems

Out of stock

Description

The Adafruit MAX44009 Lux Light Sensor utilizes a high-performance photodiode and a sophisticated 22-bit analog-to-digital converter to deliver precise ambient light measurements. Its auto-ranging architecture automatically adjusts the internal gain and integration time, providing seamless and accurate lux readings from near-total darkness to direct sunlight without user intervention.

Designed for seamless integration, the module includes a built-in 3.3V regulator and logic-level translation circuitry, ensuring safe and reliable operation with both 3.3V and 5V logic microcontrollers. The standardized I2C interface, coupled with Adafruit’s STEMMA QT and Qwiic compatible connectors, enables rapid prototyping and system integration without soldering.

Key Features

  • High-precision ambient light sensing with 0.045 lux per LSB resolution
  • Advanced auto-ranging algorithm eliminates manual configuration for varying light levels
  • Robust I2C digital interface ensures noise-immune communication
  • Onboard 3.3V voltage regulator and logic level shifter for broad compatibility
  • Compact form factor with pre-soldered headers for easy integration
  • Supported by comprehensive Adafruit libraries for Arduino and CircuitPython

Applications

  • Smart lighting systems and daylight harvesting for energy efficiency
  • Backlight and display brightness control in consumer electronics and IoT devices
  • Environmental monitoring stations for measuring ambient light intensity
  • Agricultural and horticultural light management systems
  • Photography and imaging equipment for exposure control

Technical Specifications

Sensor ModelMAX44009
Measurement UnitLux (SI Unit)
Dynamic Range0.045 lux to 188,000 lux
Resolution0.045 lux per LSB
ADC Resolution22-bit
InterfaceI2C
Operating Voltage3.3V / 5V compatible
Connector TypeSTEMMA QT / Qwiic
CompatibilityArduino, CircuitPython, Raspberry Pi
Output TypeDigital (I2C)
Module Dimensions25 x 18 x 5 mm
Module Weight2 g

Frequently Asked Questions

What is the operating voltage range for the MAX44009 sensor module?

The module is designed for 3.3V to 5V DC operation. It includes an onboard 3.3V regulator and logic level shifting, allowing safe and direct connection to both 3.3V and 5V microcontroller systems like Arduino Uno, Raspberry Pi, or ESP32 without external components.

How do I connect and communicate with this sensor?

The module communicates via the I2C protocol. You can use the standard I2C pins (SDA, SCL) on your microcontroller. For quick prototyping, utilize the STEMMA QT or Qwiic connectors for a plug-and-play, solderless connection. Adafruit provides comprehensive libraries for Arduino and CircuitPython to simplify reading lux values.

Does the sensor require any calibration or manual configuration for different light levels?

No, the MAX44009 features an automatic gain and integration time adjustment (auto-ranging) function. It dynamically adapts its internal settings to provide optimal resolution across its entire 0.045 lux to 188,000 lux range, outputting a direct lux value without requiring manual scaling or calibration from the user.

What is the resolution and accuracy of the lux measurements?

The sensor provides a resolution of 0.045 lux per LSB (Least Significant Bit) thanks to its 22-bit ADC. Accuracy is specified by the MAX44009 IC manufacturer and is suitable for most ambient light sensing applications. For precise accuracy figures, refer to the Maxim Integrated MAX44009 datasheet.

Package Includes

  • 1 x Adafruit MAX44009 Lux Light Sensor Module
  • 1 x Set of header pins

Additional Information

Weight 0.002 kg
Dimensions 1.8 × 2.5 × 0.5 cm