TCS3200 Color Sensor Module

Based on TCS3200 color light-to-frequency converter IC
Converts light intensity into a square wave signal
Supports programmable color detection (RGB + clear)
Directly compatible with Arduino, Raspberry Pi, and microcontrollers
Offers high-resolution and stable output
Includes power-down mode for energy efficiency
Built-in photodiodes with selectable filters

⚠️ Note: Shipped as either GY-31 or HW-531 (same functionality)

SKU: NB104 Categories: Light/Color Sensor, Sensors Tags: Light/Color Sensor, Sensors

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Description

GY-31 Color Sensor Module is made using IC TCS3200, a programmable color light to a frequency converter. It has configurable silicon photodiodes and a current to frequency converter in a single monolithic CMOS Integrated Circuit. Its output is a square wave having a 50% duty cycle with frequency directly proportional to irradiance (light intensity). This module can be directly interfaced with Microcontrollers, Arduino Boards, Raspberry Pi, etc.

Note: This Product is available in two different variants (GY-31 and HW-531) with the same working we will ship it randomly.

Features:

High-Resolution Conversion of Light Intensity to Frequency
Programmable Color and Full-Scale Output Frequency
Power Down Feature
Stable Temperature Coefficient
Can be directly interfaced with a Microcontroller

Package Includes:

1 x GY-31 TCS3200 Color Sensor Module

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Pin Connections

1 Table

Pin Connections Table 1

Board	Sensor Pin	Connection
TCS3200	VCC/GND/S0-S3/OUT	3.3-5V / GND / 4 digital pins / 1 digital pin

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TCS3200 Color Sensor Module

7 Examples • C/C++ | Boards: Arduino Uno, Arduino Nano, Arduino Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico

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TCS3200 Color Sensor Module - Arduino Uno

TCS3200 Color Sensor Module - Arduino Nano

TCS3200 Color Sensor Module - Arduino Mega

TCS3200 Color Sensor Module - ESP32

TCS3200 Color Sensor Module - ESP8266

TCS3200 Color Sensor Module - STM32

TCS3200 Color Sensor Module - Raspberry Pi Pico

📄 File: tcs3200_color_sensor_module_-_arduino_uno.inoArduino Uno

867 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=4, S1=5, S2=6, S3=7, OUT=8 on Arduino Uno

6#define S0 4

7#define S1 5

8#define S2 6

9#define S3 7

10#define OUT_PIN 8

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_arduino_nano.inoArduino Nano

868 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=4, S1=5, S2=6, S3=7, OUT=8 on Arduino Nano

6#define S0 4

7#define S1 5

8#define S2 6

9#define S3 7

10#define OUT_PIN 8

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_arduino_mega.inoArduino Mega

868 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=4, S1=5, S2=6, S3=7, OUT=8 on Arduino Mega

6#define S0 4

7#define S1 5

8#define S2 6

9#define S3 7

10#define OUT_PIN 8

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_esp32.inoESP32

871 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=25, S1=26, S2=27, S3=14, OUT=12 on ESP32

6#define S0 25

7#define S1 26

8#define S2 27

9#define S3 14

10#define OUT_PIN 12

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_esp8266.inoESP8266

873 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=D0, S1=D1, S2=D2, S3=D3, OUT=D4 on ESP8266

6#define S0 D0

7#define S1 D1

8#define S2 D2

9#define S3 D3

10#define OUT_PIN D4

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_stm32.inoSTM32

881 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=PA0, S1=PA1, S2=PA2, S3=PA3, OUT=PA4 on STM32

6#define S0 PA0

7#define S1 PA1

8#define S2 PA2

9#define S3 PA3

10#define OUT_PIN PA4

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

📄 File: tcs3200_color_sensor_module_-_raspberry_pi_pico.inoRaspberry Pi Pico

883 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// S0=10, S1=11, S2=12, S3=13, OUT=14 on Raspberry Pi Pico

6#define S0 10

7#define S1 11

8#define S2 12

9#define S3 13

10#define OUT_PIN 14

12void setup() {

13 Serial.begin(115200);

14 pinMode(S0, OUTPUT); pinMode(S1, OUTPUT);

15 pinMode(S2, OUTPUT); pinMode(S3, OUTPUT);

16 pinMode(OUT_PIN, INPUT);

17 digitalWrite(S0, HIGH); digitalWrite(S1, LOW); // 20% frequency scaling

18}

20int readColorFreq(bool s2val, bool s3val) {

21 digitalWrite(S2, s2val); digitalWrite(S3, s3val);

22 return pulseIn(OUT_PIN, LOW, 50000); // lower period = more of that color

23}

25void loop() {

26 int red = readColorFreq(LOW, LOW);

27 int blue = readColorFreq(LOW, HIGH);

28 int green = readColorFreq(HIGH, HIGH);

30 Serial.print("R:"); Serial.print(red);

31 Serial.print(" G:"); Serial.print(green);

32 Serial.print(" B:"); Serial.println(blue);

34 delay(200);

35}

Project Notes:

Frequency-output color sensor, same protocol as TCS230.

Specification

WeightWeight	6 g
Dimensions	3,2 × 2,4 × 1,8 cm
Product Name	TCS3200 Color Sensor Module
Type	Color Detection Sensor Module
Model	TCS3200
Sensing Method	RGB Color Detection using Photodiodes
Output Type	Frequency Output (corresponding to color intensity)
Operating Voltage	3.3–5 V DC
Light Source	White LEDs (for illumination)
Detection Distance	2–5 cm (typical)
Operating Temperature	-20°C to +70°C
Material	PCB Module with Sensor IC and Components
Applications	Color Detection, Sorting Projects, Arduino / Microcontroller Projects, DIY Electronics, Robotics
Package Contents	1× TCS3200 Color Sensor Module