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Ethernet controller W5500
LLCC68 chip solution
I2C interface: communicates through I2C at address 0x57
ESP32-Paxcounter
M5Stack QR Code Scanner Unit Stick Ethernet controller W5500Description QR Code Scanner Unit is an all in one 1D 2D code scanning unit for embedded code reading. It combines a 640 x 480 CMOS capture engine with an STM32F030 bus conversion MCU, so QR Code Scanner Unit can connect through I2C or UART by changing the side switch. QR Code Scanner Unit supports PDF417, QR Code, Data Matrix and fourteen 1D barcode types. The trigger button, buzzer, white fill light LED and red aiming LED help with manual or
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