#rfid

Hello guys, i have a project automatic door for cat, that when the cat is near 20cm or 30cm from the door, then the door will open. So im going to use rfid, i try to use rfid passive disc tag, but then im confuse about rfid reader that can read at a long range, after searching at google i found...

Hi guys, As I know RFID tags are transponder which means they need to receive a message through the antenna and after demodulating an answer will be generated. However, I wonder if we can bypass the Demodulator and turn the tag into a transmitter. please guide me if you have any solution for...