The Grove – Light & Gesture & Color & proximity sensor is TMG39931 based product, which features advanced Gesture detection, Proximity detection, Digital Ambient Light Sense(ALS), Color Sense(RGBC), and optical pattern generation/transmission for broadcast. This four-in-one sensor allows you to collect the data from the ambient environment and transfer it over the I2C bus.

Getting started with SeeedStudio Grove Light&Gesture&Color&Proximity Sensor (TMG39931）

Features: 

1. A single device integrated optical solution
2. Ambient light sensing
3. UV and IR blocking filters
4. Complex gesture sensing
5. Ideal for operation behind dark glass – High sensitivity
6. Proximity detection
7. Barcode pattern generation and transmission
8. Dual-use of a single internal LED
9. Trimmed to provide a consistent reading

Application:

1. Gesture Detection
2. Colour Sense
3. Ambient Light Sensing
4. Cell Phone Touch Screen Disable
5. Mechanical Switch Replacement
6. Printed Bar Code Emulation

Working principle:

Gesture Detection

Gesture detection utilizes four directional photodiodes to sense reflected IR energy (sourced by the integrated LED) to convert physical motion information to digital information.

Proximity Detection

The proximity detection features provide object detection by photodiode detection of reflected IR energy(Sourced by the integrated LED).

Digital Ambient Light Sense & Color Sense

The Color and ALS detection feature provide red, green, blue and clear light intensity data. Each of the R, G, B, C channels have a UV and IR blocking filter and a dedicated data converter producing16-bit data simultaneously. This architecture allows applications to accurately measure ambient light and sense colour which enables devices to calculate illuminance and colour temperature, control display backlight, and chromaticity.

Specification:

1. Supply Voltage 3.3V / 5V
2. Operating temperature -30～85℃
3. Storage temperature -40～85℃
4. Max. Lux [klx] 60
5. Interface I2C
6. I2C address 0x39