DFRobot
Gravity: TCS3430 Tristimulus Color Sensor
Devices with True Tone technology like Apple iPad Pro, iPhone, and Macs usually feature sensors that measure the ambient light colour and brightness. The dev...
Devices with True Tone technology like Apple iPad Pro, iPhone, and Macs usually feature sensors that measure the ambient light colour and brightness. The device then uses this information to automatically adjust its display, so it can correct white points and illumination based on your environmental lighting in order to render the right kinds of white under any conditions. And XYZ Tristimulus Color Sensor plays an important role in this technology.
TCS3430 features advanced digital ambient light sensing(ALS) and CIE 1931 tristimulus color sensing(XYZ). CIE1931 XYZ Tristimulus model is a kind of standard based on three different human cone cell types. The CIE XYZ color space encompasses all color sensations that are visible to a person with average eyesight. The spectral response of TCS3430 is almost the same as that of human eyes, which can realize the high-precision measurement of illumination and color temperature. What you see is what you measured!
The TCS3430 Tristimulus Color Sensor is ideally suited for the use in smartphone applications to improve color measurement and intensity of ambient light conditions. Also, it can be used in scenarios requiring a true-color viewing experience like online shopping(product color matching, reducing the return rate caused by color difference of images and real product).
You can learn more about the CIE 1931-XYZ system here: https://en.wikipedia.org/wiki/CIE_1931_color_space
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Jargon buster
Plain-language definitions for the technical terms used above.
- dynamic range
- Dynamic range describes how wide a span of values a sensor can measure, from very low to very high. For a light sensor, a wide dynamic range means it can work in dim indoor settings as well as bright sunlight without changing hardware.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- integration time
- Integration time is how long the sensor collects light for each measurement. Longer times can improve readings in dim light, while shorter times can respond faster or avoid saturation in bright light.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- programmable gain
- An adjustable amplification setting inside the ADC that makes small input signals larger before they are measured. It matters because choosing the right gain helps use more of the ADC’s range without overloading the input.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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