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Gravity: Ring 2D QR Code Scanner

Reference RBD-3002

Brand DFRobot

Gravity: Ring 2D QR Code Scanner with support for 1D & 2D codes
Compatible with Arduino, ESP32, Raspberry Pi via I2C & UART
Features colorful LED indicator for real-time scan feedback
High accuracy with ≥5mil resolution and 360° reading angle
Compact design with low power consumption (<70mA)
Ideal for vending machines, access control, and payment systems

Description
Product Details

Description

The Gravity: Ring 2D QR Code Scanner is a compact, high-performance module capable of recognizing both 1D and 2D barcodes, including QR codes, Data Matrix, PDF417, and standard retail codes like EAN and UPC. Designed with an easy-to-use Gravity interface, this scanner is compatible with Arduino, ESP32, Raspberry Pi, and other controllers through I2C or UART communication. Operating at 3.3V or 5V, it consumes less than 70mA, making it power-efficient and suitable for embedded projects. A colorful indicator provides instant visual feedback during scanning, while its wide reading angles and ≥5mil accuracy ensure fast and reliable recognition. With strong adaptability to lighting conditions (0–100000 Lux), it performs well in diverse environments, making it an excellent choice for smart applications such as access control, vending, and automated payment systems. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

Universal Code Recognition – Supports QR codes, Data Matrix, PDF417, and major 1D barcodes.
Multiple Interfaces – Works with UART and I2C for flexible development.
Gravity Interface – Plug-and-play integration with Arduino and microcontrollers.
High Precision – ≥5mil reading accuracy with wide scanning angles.
Visual Feedback – Colorful LED indicator shows recognition status.
Low Power Consumption – Operates at less than 70mA, ideal for portable projects.
Environmental Adaptability – Works under light levels up to 100000 Lux.

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Applications:

Access Control Systems – QR/Barcode-based entry systems for buildings and events.
Vending Machines – Enable quick QR code-based purchases.
Public Transport Gates – Used in metro and bus gate QR scanning.
Payment Machines – Integrates with smart terminals for scanning payments.
DIY & IoT Projects – Ideal for hobbyists building smart security or retail systems.

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General Specifications
Power Supply	DC 3.3V / 5V
Working Current	<70mA
Communication	UART, I2C
Image Pixel	640 × 480
Indicator Light	Colorful indicator / green light success prompt
Supported Codes	1D: EAN13, EAN8, UPCA, UPCE0, UPCE1, Code128, Code39, Code93, CodeBar, Interleaved 2 of 5
2D: QR Code, Data Matrix, PDF417
Depth of Field	25mm – 150mm (depending on code quality & environment)
Contrast Requirement	≥25%
Reading Angle	Roll: 360°, Pitch: 55°, Yaw: 55°
Scanning Angle	Horizontal: 69°, Vertical: 56°
Reading Accuracy	≥5mil
Working Temperature	-20°C ~ +60°C
Storage Temperature	-40°C ~ +80°C
Ambient Light	0 – 100000 Lux
Relative Humidity	5% – 95% (non-condensing)
Shipment Weight	0.025 kg
Shipment Dimensions	6 × 5 × 4 cm

Please allow 5% measuring deviation due to manual measurement.

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Documentation:

Connection-Diagram with DFRduino UNO R3

It can be used in self-service vending machines, subway gates, access control, payment machines, etc.

Product wiki

Package Includes:

1 x Gravity: Ring 2D QR Code Scanner

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Product Details

Reference RBD-3002

In stock 5 Items

Specific References

EAN13: 3002

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Gravity: Ring 2D QR Code Scanner

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Applications:

Documentation:

Connection-Diagram with DFRduino UNO R3

Package Includes:

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