I recently bought an arduino uno and a NFC Shield V2 from seedStudio : http://www.seeedstudio.com/wiki/images/thumb/d/d5/NFCshield.jpg/400px-NFCshield.jpg
Everything work fine.
Now I would like to detect my cards with differentes antennas on the shield. Trying to do something like that :
antenna 1 detect card 3
antenna 2 detect card 1
antenna 1 detect card 8
antenna 3 detect card 9 ...
In a first time, I use an NPN 2N 2222 to switch from one antenna to nothing :
But it doesn't work. I try to inverse the NPN but nothing happen.
I would be very happy if someone could help me
Maybe is there on other way to make this ?