I have a project which is using PN532 Seeedstudio NFC Shield. And i have several questions to ask:
I am going to connect it with a device which also transmits an RF as much as 868.3MHz.
So i am wondering if this RF will interference the radio frequency from the NFC shield?
Or the NFC shield has already an EMC filter that can reject all surrounding noises?
If there is any possible interference, how can i prevent the noises interfering the RF of NFC?
I have been thinking about making low pass filter of 14Mhz or bandpass filter of 12-14Mhz.
I am going to attach the device through I2C connection. But the device which i am going to attach outputing as much 7-12V,
While the NFC has 5V. Will the voltage be tolerated or this situation requires logic level converter?
Let me know what is your suggestion to this…
Thank you in advance.