I would like to build a box which I will store some items inside.
I already have an LCD with ATmega328P on top of the box.
I want to add an RFID Reader into the box so I will know how many items inside the box
and when I open the box and take out the items, I know which one been taking out.
I have used the RFID-RC522 but the problem is I have to place the items really close to the reader in order to read the RFID tag.
The box size is 14"x14"x14".
Right now, I'm using lipo battery to power for the system but I even could put a small 12V battery inside the box if necessary.
The idea is only wake up and read when the lid is open and will go to sleep.
I could not find any RFID reader could cover this range and with low power supply and also if it could be used with Arduino (optional)
Please let me know if you have any idea. Thank you very much