Arduino Color Recognition Sensor GY-31

The TCS230 is available in an 8-pin SOIC surface mount package that integrates 64 photodiodes on a single chip. There are four types of these diodes. Among them, 16 photodiodes have red filters; 16 photodiodes have green filters; 16 photodiodes have blue filters; and the remaining 16 have no filters and can transmit all light information. These photodiodes are arranged in a cross within the chip, which can minimize the non-uniformity of incident light radiation, thereby increasing the accuracy of color recognition; on the other hand, 16 photodiodes of the same color are connected in parallel and evenly distributed in diode arrays, eliminating the positional error of the color. During operation, the required filter is dynamically selected through two programmable pins.

The sensor's typical output frequency ranges from 2 Hz to 500 kHz, and the user can also select an output scale factor of 100%, 20%, or 2%, or a power-down mode through two programmable pins. The output scale factor enables the output of the sensor to adapt to different measurement ranges, improving its adaptability. For example, when using a low-speed frequency counter, a small scaling value can be selected to match the output frequency of the TCS230 to the counter.

Sensor: TCS3200

• Color Frequency Converter

Arduino Color Recognition Sensor GY-31 Features:

• High resolution conversion of light
• Conversion from density to frequency
• Programmable color and full-scale output frequency
• Communication directly with the microcontroller
• Single supply operation (2.7 V to 5.5 V)
• Power cut-off feature
• Non-linear error typically 0.2% at 50 Hz
• Stable 200 ppm / °C temperature coefficient
• Low profile, lead-free, and RoHS compatible surface mount package

Pin Function Definitions:

Technical Specifications:

• Operating voltage range: 2.7 V ~ 5V
• Supply current: 5V, LED on 25 mA
• Interfaces: Output frequency
• Operating temperature: -40 ~ 85 °C
• Size: 33.2mm x 33.2mm x 25mm