Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic
Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic - Image 2
Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic - Image 3
Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic - Image 4
SKU: SENS-2787
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Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic

₹3,189.00 (Inclusive of all taxes)
Out of Stock

The Adafruit AS7343 breakout is a high-resolution 14-channel spectral light and color sensor compatible with 3.3V/5V systems via I2C. Featuring STEMMA QT/Qwiic connectors, it enables plug-and-play integration with Arduino, Raspberry Pi, and other development platforms for advanced color analysis and light sensing applications.

Features

  • 14-Channel Spectral Sensing: 11 visible, 1 near-IR, 1 clear, and 1 flicker detection channel.
  • High-Resolution ADC: 16-bit, 6-channel ADC with internal SMUX for precise digital output.
  • Plug-and-Play Connectivity: STEMMA QT / Qwiic connectors for solderless I2C connection.
  • Broad Compatibility: Onboard level shifting for 3.3V & 5V logic, supported by Arduino & CircuitPython libraries.
  • Compact Sensor Array: 25 photodiodes integrated into a 3x2mm package for detailed spectral analysis.

Out of stock

Description

The AS7343 is a sophisticated multi-spectral sensor capable of discerning light intensity across 14 distinct channels, providing detailed color composition data beyond standard RGB sensors. Its 25 photodiodes and internal Super Multiplexer (SMUX) route signals through a high-precision 16-bit ADC, delivering accurate digital readings for both visible and near-infrared spectra, as well as AC flicker detection.

This breakout board simplifies access to the sensor’s advanced capabilities by incorporating STEMMA QT and Qwiic-compatible JST PH connectors, enabling rapid prototyping without soldering. Integrated level-shifting circuitry ensures safe operation with both 3.3V and 5V microcontroller systems, such as Arduino, Raspberry Pi, ESP32, and STM32 platforms. Comprehensive open-source libraries for Arduino and CircuitPython facilitate immediate development for applications ranging from scientific research to interactive art installations.

Key Features

  • Multi-Spectral Analysis: Simultaneously measures 14 channels (11 visible, NIR, clear, flicker) for detailed light decomposition.
  • High-Density Photodiode Array: Integrates 25 photodiodes within a compact 3x2mm optical sensor for sensitive and accurate readings.
  • Advanced Signal Conditioning: Features a built-in SMUX and 16-bit, 6-channel ADC for low-noise, high-resolution digital conversion.
  • Developer-Friendly Interface: Standard I2C communication protocol with GPIO and interrupt pins for flexible system integration.
  • Universal Voltage Compatibility: Onboard level shifting supports both 3.3V and 5V logic levels, protecting the sensor and simplifying power design.
  • Rapid Prototyping Ready: STEMMA QT / Qwiic connectors provide a solderless, plug-and-play connection to a vast ecosystem of compatible boards.
  • Comprehensive Software Support: Officially supported by well-documented Arduino and CircuitPython libraries for quick project deployment.
  • Optimized Performance-to-Cost Ratio: Delivers laboratory-grade spectral sensing in a compact, accessible breakout format ideal for education and professional development.

Applications

  • Precision color matching and spectral analysis for quality control in manufacturing.
  • Ambient light adaptation and true-tone display calibration in smart devices and monitors.
  • Plant health monitoring and nutrient analysis via reflected light spectroscopy in agricultural tech.
  • Art conservation and material analysis using non-invasive spectral fingerprinting.
  • Flicker detection and light source characterization for building automation and smart lighting systems.

Technical Specifications

Sensor ModelAS7343
Sensor TypeMulti-channel Spectral Light / Color Sensor
Total Channels14 (11 Visible, 1 NIR, 1 Clear, 1 Flicker)
Integrated Photodiodes25
Sensor Size3 x 2 mm
ADC Resolution16-bit
ADC Channels6-channel with SMUX Multiplexing
Communication InterfaceI2C
Additional PinsGPIO, Interrupt
Logic Voltage Compatibility3.3V & 5V (with onboard level shifting)
Connector StandardSTEMMA QT / Qwiic (JST PH)
Software LibrariesArduino, CircuitPython
Breakout Dimensions25 x 17 x 10 mm
Breakout Weight3 g

Frequently Asked Questions

What is the operating voltage range for this AS7343 breakout?

The breakout board includes onboard level-shifting circuitry, making it compatible with both 3.3V and 5V logic systems. You can power it directly from the 3.3V or 5V pin of your microcontroller (e.g., Arduino, Raspberry Pi) via the STEMMA QT/Qwiic connector or the breakout's VIN pin. Always ensure your power supply is clean and within these ranges.

How do I connect this sensor to my Arduino or Raspberry Pi?

Connection is solderless if you use the STEMMA QT or Qwiic connectors. Simply use a compatible 4-pin JST PH cable to connect the breakout's port to a matching QT/Qwiic port on your host board (e.g., Adafruit QT Py, SparkFun RedBoard Qwiic). For boards without these connectors, you can solder the included header and wire the I2C (SDA, SCL), power (3.3V/5V), and ground pins directly.

What libraries are available for programming the AS7343 sensor?

Adafruit provides and maintains the Adafruit_AS7343 library for Arduino and the adafruit_as7343 library for CircuitPython. These libraries handle all low-level communication, channel configuration via the SMUX, and data reading, allowing you to focus on your application logic. Examples are included for basic spectral reads and advanced configuration.

Can this sensor detect infrared (IR) light or only visible colors?

Yes, the AS7343 includes a dedicated near-infrared (NIR) sensing channel alongside its 11 visible spectrum channels. This allows it to measure IR light intensity separately, which is useful for applications like material analysis, remote controls testing, or filtering out IR contamination in visible light measurements.

What is the purpose of the 'flicker' detection channel?

The flicker detection channel is designed to sense AC line noise or modulation in artificial light sources (e.g., 50Hz or 60Hz flicker). It can identify the frequency of the flicker, which is valuable for applications in video synchronization, lighting quality assessment, and reducing eye strain in human-centric lighting systems.

Package Includes

  • 1 x Adafruit AS7343 14-Channel Light / Color Sensor Breakout Board
  • 1 x 6-pin Header Strip (for optional soldering)

Additional Information

Weight 0.003 kg
Dimensions 1.7 × 2.5 × 1 cm

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