rfid, repeated read?
Graham Stabler
Posts: 2,510
Hi,
I'm helping a friend with a project, a phantom chess set, you play against a computer and the pieces mysteriously move (with magnets, smoke and mirrors).
My friend wants to put RFID tags in the base of the pieces. He bought an RFID reader module (RDM6300) but it only works when the tag is moved into its vicinity. I'm almost certain this is just the way that the reader is set up, to read once and then ignore but I wanted to ask if anyone knows for sure. So to clarify, can you place a tag on a reader and then repeatedly request its identity without moving it?
He is going to probably buy a Parallax RFID module or implement the simple reader for the propeller someone once posted. I think for the full board another option may be required as 64 readers will cost rather a lot, we'll be looking at multiplexing and possibly mechanical scanning (8 readers on a gantry).
Cheers,
Graham
I'm helping a friend with a project, a phantom chess set, you play against a computer and the pieces mysteriously move (with magnets, smoke and mirrors).
My friend wants to put RFID tags in the base of the pieces. He bought an RFID reader module (RDM6300) but it only works when the tag is moved into its vicinity. I'm almost certain this is just the way that the reader is set up, to read once and then ignore but I wanted to ask if anyone knows for sure. So to clarify, can you place a tag on a reader and then repeatedly request its identity without moving it?
He is going to probably buy a Parallax RFID module or implement the simple reader for the propeller someone once posted. I think for the full board another option may be required as 64 readers will cost rather a lot, we'll be looking at multiplexing and possibly mechanical scanning (8 readers on a gantry).
Cheers,
Graham
Comments
Have you seen this thread?
These readers are relatively small but it would be a challenge to fix one under each Chess Piece. They are pretty inexpensive.
The MFRC522 readers will keep reading the card as long as it's issued a command to do so.
I'm still working out how to store and retrieve a card's data but the current program can read a card's serial number just fine.
Good to know there is no fundamental reason it cannot work.
Cheers,
Graham