The QRCode Unit is a simple yet effective scanning device, combining a CMOS QR code capture engine with a 640 x 480 resolution and a bus conversion MCU (STM32F030). It includes a switch for alternating between I2C and UART communication interfaces. This unit can read three common types of QR codes and eight types of one-dimensional barcodes. It features a firmware upgrade interface for added convenience. It has a scan trigger button, a buzzer, and LED lights, which help in indicating different states and assist in scanning. You can set up the unit to work in either an automatic continuous trigger mode or a manual trigger mode, based on their needs. It's a practical tool for areas like logistics, retail, and manufacturing, where barcode scanning is a regular activity. Note: To switch to UART serial communication mode, ensure the device is powered off, and toggle the mode switch to the UART serial position. Then, press and hold the TRIG button for 2 seconds while powering on until the device completes startup to successfully switch to UART serial communication mode. Features * STM32F030F4P6@32 bit ARM Cortex-M0 processor * Supports 3 types of two-dimensional code and 8 types of one-dimensional code * Upgradable firmware * Built-in I2C and UART communication interface switch * Built-in buzzer sound prompts * Built-in lighting LED * High-resolution imaging * Focusing and aiming functions Specifications MCU STM32F030F4P6@32 bit ARM Cortex-M0 processor Sensor 640 x 480 CMOS Illumination White LED Focusing and Aiming Green led Read the type of QR code PDF417, QR Code, Data Matrix Read one-dimensional code types Code39, Code93, Code 128, EAN-13, EAN-8, UPC-A, UPC-E, Interleaved 2 of 5 Recognition reading accuracy ≥5mil Print contrast ≥ 20% Scanning angle Elevation ±55°, declination ±55° (plus refractor lens, can change the scanning Angle) Communication Interface I2c serial communication (0x21) Shell Material Plastic (PC) Product Size 65.8 x 18.4 x 15.8mm Package Size 136 x 92 x 16mm Product Weight 14g Package Weight 19.4g Resources * Product Wiki Package Contents * 1x QRCode Unit * 1x HY2.0-4P Cable (20cm) https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2024-04-12 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2024-09-18 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2024-11-29 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2024-11-30 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2025-04-29 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2025-11-28 https://elecena.pl/product/25696499/qr-code-scanner-unit-stm32f030 2025-11-29