Gravity: Ring 2D QR Code Scanner

This highly integrated QR code scanner can recognise common 1D codes and 2D codes. With its compact footprint, it employs the easy-to-connect DFRobot Gravity Interface and is equipped with a colourful indicator that feeds back the sensor recognition status by showing different colours.

Operating at 3.3V/5V, the scanner is compatible with UART and I2C communication, which makes it easier to develop on controllers like Arduino, ESP32, Raspberry Pi and more.

It can be used in self-service vending machines, subway gates, access control, payment machines and other similar scenarios.

The

product wiki

is on hand to help you get started.

Connection Example – Arduino

Features

• Easy to use Gravity interface
• 3.3V/5V power supply
• I2C & UART supported
• Recognises common 1D codes and 2D codes

Specification

• Power Supply: DC3.3V/5V
• Working Current: ＜70mA
• Communication: I2C, UART
• Image Pixel: 640*480
• Light Source: colorful indicator/green light flashing prompt successful reading
• Code System:
  • 1D: EAN13, EAN8, UPCA, UPCE0, UPCE1, Code128, Code39, Code93, CodeBar, Interleaved 2 of 5
  • 2D: QR code, Data Matrix, PDF417
• Depth of Field: QR Code (25mm-150mm product performance may be affected to varying degrees due to barcode quality and environmental conditions)
• Contrast: ≥25%
• Reading Angle: roll 360°, pitch 55°, yaw 55°
• Scanning Angle: 69° (horizontal), 56° (vertical)
• Reading Accuracy: ≥5mil
• Working Temperature: 20°C ~60°C
• Storage Temperature: -40°C ~80°C
• Environment Light: 0~100000Lux
• Relative Humidity: 5% to 95% (non-condensing)

Resources

• Product wiki

Package Contents

• 1x Ring 2D QR Code Scanner
• 1x Adapter Board
• 1x PH2.0 4-pin Dupont Wire (30cm)