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Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic
The Adafruit AS7343 14-Channel Light / Color Sensor Breakout is a multi-channel spectrometer, which is a special type of light sensor that is able to detect not only the amount of light present but also the amounts of light within different wavelengths. This means that you can use it to detect much better than the human eye is capable of, what color or colors of light is present.
The AS7343 packs within its 3x2mm footprint 25 photodiodes that can detect 11 separate, overlapping bands of visible light, plus one near infrared, one clear and a flicker channel for 14 channels total. Compared to the AS7341, this sensor has 4 more light channels - but you'll need to use a new firmware driver since its not back-compatible.
The multi-spectral color measuring capabilities of the AS7343 can be used to quantify the specific makeup of light, either emitted or reflective. It's kind of like a mini spectroscopy sensor. This is possible thanks to the impressive collection of sensors in the AS7343 being routed through a 16-bit 6-channel ADC that takes the raw measurements and converts them to digital values that can be read out over I2C.
14 readable individual sensor elements (13 light channels plus flicker detection) don’t exactly fit through a 6-channel ADC all at once, so the chip includes a so-called Super MUX (SMUX) that allows you to route the signal from any sensor to any ADC channel. The sensor also has GPIO and interrupt pins that can allow it to communicate directly with other sensors, or the microcontroller itself.
User Manual / Datasheet / Example Codes Etc.
Features
- 14-channel spectral light and color sensing
- Based on the AS7343 multi-spectral sensor
- Detects visible light across multiple wavelength bands
- Includes dedicated channels for near-infrared (NIR) sensing
- High-resolution spectral measurements for color and light analysis
- Supports I2C communication
- STEMMA QT / Qwiic compatible for easy plug-and-play connections
- Compact breakout board suitable for embedded and portable projects
- Compatible with microcontrollers such as Arduino, ESP32 and Raspberry Pi
- Useful for color analysis, lighting measurement, environmental sensing and spectral experiments
Specifications
- Sensor: AS7343
- Sensor Type: 14-Channel Spectral Light / Color Sensor
- Sensing: Multi-channel visible light + NIR
- Interface: I2C
- Connector: STEMMA QT / Qwiic
- Supply Voltage: 3.3V logic compatible
- Communication: I2C
- Applications: Color sensing, spectral analysis, light measurement
- Board Type: Breakout Board
Package Includes
- 1x Adafruit AS7343 14-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic
