Product Details
This top - notch QR code scanner is highly integrated and offers excellent performance. It can quickly and accurately recognize both common 1D and 2D codes. With its compact size, it features an easy - to - connect Gravity Interface. A colorful indicator on the scanner shows different colors to feedback the sensor recognition status. Operating at 3.3V or 5V, it's compatible with UART and I2C communication, making it a breeze to develop on popular controllers like Arduino, ESP32, and Raspberry Pi. This scanner is a great fit for self - service vending machines, subway gates, access control systems, and payment machines. Its features include a user - friendly Gravity interface, 3.3V/5V power supply, and support for I2C and UART. The specifications cover power supply, working current, communication modes, image pixel, light source, code systems, depth of field, contrast, reading and scanning angles, reading accuracy, working and storage temperatures, environment light, and relative humidity. You can also refer to the product wiki for more details. The shipping list includes a Ring 2D QR Code Scanner, an Adapter Board, and a 30cm PH2.0 - 4P Dupont Wire (Red Black Blue Green).
Using this QR code scanner is quite simple. First, connect it to your device using the Gravity Interface. You can power it with either 3.3V or 5V according to your needs. When it comes to compatibility, it works well with controllers like Arduino, ESP32, and Raspberry Pi through UART or I2C communication. Just hold the scanner in front of the QR or 1D code you want to read. The colorful indicator will show different colors to let you know the recognition status. A green light flashing means successful reading. When using it, be aware that the barcode quality and environmental conditions can affect the product performance to some extent. For example, the depth of field for QR codes is between 25mm - 150mm. Try to keep the contrast of the code ≥25% and the environment light within 0 - 100000Lux. Also, the working temperature should be between 20°C and 60°C, and the storage temperature between - 40°C and 80°C. To maintain the scanner, keep it clean and dry. Avoid exposing it to extreme temperatures, high humidity, or strong magnetic fields. If you have any further questions, refer to the product wiki.
