> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Gravity: Ring 2D QR Code Scanner

**Type:** Product page · **SKU:** SEN0486 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-ring-2d-qr-code-scanner.html ([markdown](https://core-electronics.com.au/gravity-ring-2d-qr-code-scanner.html.md))

This highly-integrated QR code scanner with excellent performance can recognize common 1D codes and 2D codes. Operating at 3.3V/5V, the scanner is...

## Pricing

- **Price:** $65.27 (inc GST) — $59.34 AUD, exc GST
- **Quantity discounts:** 10+ $57.55 (exc GST) · 20+ $57.40 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Oct 30 and Nov 03.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0486:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0486:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This highly integrated QR code scanner with excellent performance can recognize common 1D codes and 2D codes. With a small size, it employs easy-to-connect Gravity Interface and is equipped with a colorful indicator that feeds back the sensor recognition status by showing different colors.

**Board-Overview

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, etc.

**Connection-Diagram with DFRduino UNO R3**

**![Gravity:Ring 2D QR Code Scanner](https://core-electronics.com.au/attachments/localcontent/Connection-Diagram_39482f3f2c0.png)**

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

### Features

- Use-to-connect Gravity interface
- 3.3V/5V power supply
- I2C & UART supported

### Applications

- Self-service vending machines
- Subway gates
- Access control
- Payment machines

### 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)

### Documents

- [Product wiki](https://wiki.dfrobot.com/SKU_SEN0486_Gravity_Ring_2D_QR_Code_Scanner)

### Parts List

- Ring 2D QR Code Scanner x1
- Adapter Board x1
- PH2.0-4P Dupont Wire 30cm(Red Black Blue Green) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_12476.jpg)