Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Model	TCS34725
Interface	I2C
Operating Voltage	3.3V - 5V
LED Type	White LED with UV filter
Detection Range	Up to 60mm
Integration Time	Adjustable (2.4ms to 614ms)
Gain Settings	1x, 4x, 16x, 60x
Board Dimensions	24mm x 18mm
Mounting Holes	4 x 3mm
Compatibility	Arduino, Raspberry Pi, ESP32

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable and compact

We purchased ten of these for our workshop. All units performed consistently. The form factor is small enough to fit into tight enclosures without sacrificing performance.

Anonymous

Mar 21, 2026

Rating: 5/5

Ideal for university projects

Bought this for a sorting robot project. It distinguishes between similar shades of blue and green very well. The documentation provided by the seller was helpful too.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect upgrade from TCS3200

This module is significantly easier to use than the older TCS3200. The I2C interface saves so many GPIO pins on my Arduino project. Color accuracy is impressive right out of the box.

Anonymous

Mar 09, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly and well-packaged. Integrated it into a home automation system to detect liquid colors in transparent tubes. No false readings so far.

Anonymous

Mar 08, 2026

Rating: 4/5

Great sensor, minor library issues

The hardware quality is excellent and the white LED provides consistent lighting. I had to tweak the example code slightly for my ESP32, but once configured, it works flawlessly.

Anonymous

Mar 01, 2026

Rating: 4/5

Good value for money

Works as advertised. The color temperature reading is a nice bonus feature. Just ensure your pull-up resistors are correctly sized for your I2C bus speed.

5 FAQ

Q: What is the maximum distance for accurate color detection?

A: For optimal accuracy, we recommend placing the object within 10mm to 20mm of the sensor. While it can detect up to 60mm, precision decreases with distance.

Q: How do I calibrate the sensor for different lighting conditions?

A: You can adjust the integration time and gain settings via the I2C registers to suit ambient lighting. For best results, perform calibration in the specific environment where the sensor will be used.

Q: Does this module work directly with 5V Arduino Uno boards?

A: Yes, the GY-33 module supports an operating voltage range of 3.3V to 5V, making it fully compatible with the 5V logic of the Arduino Uno.

Q: Is a library available for MicroPython?

A: Yes, several open-source MicroPython libraries are available on GitHub that support the TCS34725 chip used in this module.

Q: Can this sensor detect UV light levels?

A: This sensor is designed for visible color recognition (RGB) and clear light detection. It includes a UV filter to improve color accuracy, but it does not measure UV intensity specifically.

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