the Grove NFC v1.1 board is not working for me with the provided samples for arduino. I tried it in UART mode on Arduino Mega with the code described on the WIKI http://www.seeedstudio.com/wiki/Grove_%EF%BC%8D_NFC (PN532_HSU): but I get an error: Didn’t find PN53x board.
As suggested on the WIKI and on the forum, I tried to work in I2C mode, after changing the 3 jumpers: but same error.
Also, I am surprised there is no LED that lights up when power (unlike the grove RFID reader).
Thanks for help.