Simple and cheap NFC Scanner project. Features: - any Arduino or supported MCU - cheap RC522 module (currently available for about $ ) - uses MRC522 library - OLED screen for output - Should work with most MHz cards and tags - MRC522 module should be used with but it works at 5V too - To scan Visa payWave and MasterCard PayPass cards use 5V or better external coil All connections described in the code. Source code is available here: If you find it useful and you want to buy me a coffee or a beer: