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TCS230 TCS3200 Color Recognition Sensor GY-31 Module

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


  • 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


  • Operating Voltage : 2.7V ~ 5.5V
  • Current : 25mA at 5V when LED is ON
  • Operating Temperature : -45°C ~ 85°C
  • Non-linearity Error : 0.2% at 50KHz typically
  • Temperature Coefficient : 200 ppm/°C


Pin Out:

  PIN    Name    Description  
1GNDPower Supply Ground
2OUTOutput Frequency
3S2Photodiode Type Selection Input
4S3Photodiode Type Selection Input
5VCCSupply Voltage
6VCCSupply Voltage
7S1Output Frequency Scaling Selection Input
8S0Output Frequency Scaling Selection Input
9LEDLED Control, 1 – LED ON & 0 – LED OFF
10GNDPower Supply Ground

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