Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | GY-33 / GY-31 |
| Sensor Type | TCS3200D / TCS34725 RGB Color Sensor |
| Interface | I2C / UART / TTL Serial |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | 0mm - 10mm (Optimal) |
| Output Data | RGB Values, Hue, Saturation, Temperature |
| PCB Dimensions | 22mm x 18mm x 4mm |
| Compatibility | Arduino, Raspberry Pi, STM32, ESP32 |
| LED Indicator | White LED for Illumination |
| Application | Color Sorting, Robotics, DIY Electronics |
Anonymous
Mar 29, 2026
Rating: 5/5
Great upgrade from older models
Switched from an older photoresistor setup to this TCS34725 module. The difference in precision is night and day. It easily detects subtle shade differences.
Anonymous
Mar 26, 2026
Rating: 5/5
Perfect for my sorting robot project
This sensor module is incredibly accurate for distinguishing between different colored blocks. The I2C interface made integration with my Arduino Uno very straightforward. Highly recommended for hobbyists.
Anonymous
Mar 18, 2026
Rating: 4/5
Compact and easy to wire
The pinout is clearly labeled which saved me a lot of guessing. It fits perfectly into small enclosures. Only wish the cable was included, but that's a minor issue.
Anonymous
Mar 15, 2026
Rating: 5/5
Exceeded expectations
Fast response time and very stable output. I am using this for a line-following robot that needs to identify colored zones, and it performs flawlessly every time.
Anonymous
Mar 10, 2026
Rating: 5/5
Reliable and consistent readings
We bought ten of these for our workshop. They provide consistent RGB data and the build quality is solid. The white LED helps significantly when testing in dim environments.
Anonymous
Mar 03, 2026
Rating: 4/5
Good value but needs calibration
Works well once you spend time calibrating it for your specific lighting conditions. The documentation could be better, but there are plenty of tutorials online to help get started.
Q: Can this sensor detect transparent objects?
A: No, this optical sensor relies on reflected light to determine color. Transparent or highly reflective mirror-like surfaces will not yield accurate color data.
Q: Does this module work directly with 5V Arduino boards without a logic level converter?
A: Yes, the GY-33/GY-31 modules typically support 3.3V to 5V input directly, making them compatible with 5V Arduino boards like the Uno without needing extra converters.
Q: What is the maximum distance for accurate color detection?
A: For the most accurate results, the sensor should be placed between 2mm to 10mm away from the object. Distances greater than 15mm may result in unreliable readings due to ambient light interference.
Q: How do I calibrate the sensor for white balance?
A: Place the sensor over a standard white reference tile and run the calibration function in the library. This adjusts the gain and integration time to normalize the RGB values.
Q: Is sample code available for Raspberry Pi?
A: Yes, we provide Python libraries and example scripts for Raspberry Pi on our GitHub repository. You can find the link in the product manual or contact us for direct access.
Kids Art DIY Stamp Kit - Round Sponge Daubers, Mushroom Head Stamps, and Paint for Graffiti
$2.44
YP8 YP-80000 Book Block Pressing Machine Supply Robust Structure Reliable Application
$23,790.00
Feileniao Four Seasons Flowers Line Drawing Atlas - Chinese Ink Painting Guide for Brush Beginners
$39.90
365 Days! Drummer Training Plan - Beginner Self-Study Guide for Drum Kits and Jazz Drums with Tutorial Audio
$55.00
New Rechargeable Electric Incense Making Machine – Compact Home Device for Extruding Coil, Sandalwood, and Stick Incense, Manual Incense Crafting Equipment
$268.00
Tire Stone Removal Hook, Multi-Function Tool with Built-in Screwdriver for Window Breaking and Self-Defense
$7.51
Pearl Sand Wax, Ice Flower Wax, Floating Aromatherapy Candle Colored Suspended Particles for Atmosphere Decor and DIY Crafts
$5.78
No-Drill Wall-Mounted Toilet Paper Holder and Storage Shelf for Bathroom
$19.30
Chain Sling Lifting Shackle Steel Chain Single Leg with Hooks on Both Ends for Towing, 2m Length, 5 Ton Capacity
$79.00
120L Milk Pasteurizer, Homogenizing Mixer, and Ice Cream Aging Machine - Factory Supply
$59,892.00
LUBOSHI Automatic Retractable Hose Reel 12MM Water Drum PVC Braided Hose for Car Wash, Gardening, and Auto Repair - 15 Meters
$383.00
No-Drill Over-Toilet Storage Rack - Wall-Mounted Bathroom Organizer for Tank Gap
$19.84
Commercial Automatic Multi-Function Vegetable Cutter for Slicing, Dicing, and Shredding
$1,782.00
Zhonglian Hamburger Food Warmer Display Cabinet 1.2m 1.5m 3-in-1 Warmer Double-Layer Display Cabinet Crisp Keeper
$3,376.00
A3 Watercolor Paper 300g Thickened Cotton Pulp Fine Grain, A4 Medium Grain for Beginners, 4K Wood Pulp Cotton Blank Hand-Painting Paper, Square Art Coloring Paper, Postcard & Bookmark Paper
$18.90
Sketch Gray Tone Pencils for Art Students, Detail Highlight Blending Stumps, Makeup Sponge Pens, Quick Sketch Eraser Pen Sets
$6.46
Disposable Vacuum Cleaner Filter Mesh - Non-Woven Dust Bag with Elastic Band for Home Use
$4.50
Systematic 3D Painting Learning Package (Includes 100 Lessons)
$798.00
6/8/12Pcs Silicone Red Wine Glass Identification Marker Char
$27.44
Stainless Steel Sink Drain Basket – Expandable Kitchen Dish and Vegetable Rack
$12.35
Tungsten Carbide Internal Thread Tool Holder – Anti-Vibration CNC Turning Insert for Small Bore Threading (CNR)
$73.02
Henkel Loctite SICOMET 8400 77 99 40 50 Instant Adhesive for Metal and Rubber with BS Accelerator
$69.00
Colored Pencil Set, Basswood Hexagonal Raw Wood Pencils for Painting and Art Coloring
$21.68
Small Ceramic Herb Jar – Imperial Yellow Hexagonal Double-Layer Container for Angong Niuhuang Wan Pills
$8.80
Spanish Brush Master ESCODA PERLA Pearl White Toray Nylon Round Watercolor Brush, Short Handle 1430
$44.20
Qiwei COD Rapid Detector QW-COD-T/B - Chemical Oxygen Demand Tester with Potassium Dichromate Digestion for Wastewater
$3,330.16
Natural Wheat Straw Baby Rattle - Children's Musical Instrument Toy, Maraca, Shaker Bell for Newborns - Orff Music Instrument
$10.80
CANDLE.LAB | 100% Cotton Unwaxed Candle Wick Roll - Thin Stem Chandelier Candle Making Supplies #31
$25.00
Pneumatic Rotary Vibrator - Feiyu GT25 Pneumatic Vibrator - Quality Guaranteed
$997.00
Quick-Frozen Vegetable Deodorizing Sterilization Washer IRW Zhongfang Ready-to-Cook Vegetable Production Washing Line Semi-Finished Vegetable Processing Oxygen Equipment
$27,000.00
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
