Preface: I am pretty new to all this, so apologies if I missing something simple.
I got the xEM installed. I also got the PN532 read/writer (from dangerous things, so not a clone). Using an arduino uno R3, I hooked up the pn532 board and uploaded some sample code from https://github.com/elechouse/PN532/blob/PN532_HSU/PN532/examples/iso14443a_uid/iso14443a_uid.pde and was able to read the card and fob (in both SPI and I2C modes) that came with the PN532. However I cannot seem to read the xEM chip in my hand.
I also tried reading using the Dangerous Things Support Tool and the NFC Tools (by wakdev) apps from google play, but did not get anything.
Few random notes/things-i-dont-understand
1) I order the xEM a while back, and just got it installed 3 days ago, the box says "25KHZ ATA5577 / EM / HID / INDALA
I assume that should read 125KHZ? Or is this an older model or something?
2) I read that the chip comes in EM mode by default
what does that mean? does this change anything in how I am going about this (code wise)
3) I have watched the orientation video
still have not been able to get it to read
My first goal really is to just have my phone unlock when i pick it up, not doing anything too crazy.
I appreciate any help/suggestions anyone can offer.