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README.md

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This is a firmware for AVR devices that reads from Wiegand interface and outputs results to a character LCD display.

Usage

This is intended for an ATmega8515L chip, but other AVR devices can be used as long as there is a full 8-bit port available for communication with a HD44780-compatible LCD. See port definitions in lcd.h for more details.

  • PortA[7:0]' goes to D7toD0` on the LCD
  • PortE[2:0] goes to EN, RW, RS on the LCD
  • Data0 (green) and Data1 (white) on the Wiegand-interface goes to INT0 and INT1

Supported Formats

  • 26-bit HID Proximity (standard)
  • 35-bit HID Corporate 1000

Other card formats can still be read but will not have their site and card numbers decoded.