Maikrt Embedded QR Code Scanning Module USB and ...

This QR code systems works just as intended with USB. Very well put together. It comes with a cable to help you attach it to your custom circuit as well. WARNING! No where does it say that it operates on 3.3V for the logic levels on TX and RX. I used a translator, because the operating voltage specified was 5V. So I assumed the logic was also at 5V. Since this is true, I would not recommend plugging the TX line from an Arduino UNO into the RX line of the QR code reader as without more data , this could potentially damage the device. The seller of this QR code reader needs to specify that it operates at 3.3V logic with a 5V power supply to it.

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Barcode Scanner Module, 1D/2D Codes Reader

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Overview

This is a small 1D/2D codes reader, by using the intelligent image recognition algorithm, it will decode the barcode or 2D code on paper or screen, fast and accurately.

Through the onboard USB and UART interface, it can be directly plugged into a computer, or be easily integrated to kinds of devices due to its small form factor.

Features

• Easy to use, requires no knowledges of image recognition
• Decodes various common 1D/2D codes such as Barcode, QR code etc.
• Onboard micro USB and UART serial port, allows to connect with computers or embedded devices
• Configurable via scanning 'configuration code'
• Onboard light source, works in the dark

Specifications

• Operating voltage: 5V
• Operating current: 135mA (scanning), 58mA (standby), 2mA (sleep)
• Operating temperature: 0°C~60°C
• Operating humidity: 5%~95% (Non-condensing)
• Communication interface: UART, USB
• Decodes 1D codes: Codebar, Code 11, Code 39/Code 93, UPC/EAN, Code 128/EAN128, Interleaved 2 of 5, Matrix 2 of 5, MSI Code, Industrial 2 of 5, GS1 Databar(RSS)
• Decodes 2D codes: QR code, Data Matrix, PDF417
• Light source: white
• Scan angels: roll 360°, skew ±65°, pitch ±60°
• Field of view: 28° (horizontal), 21.5° (vertical)
• Dimension: 53.3mm x 21.4mm

Development Resources

Wiki : www.waveshare.com/wiki/Barcode_Scanner_Module

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