Hi all !
I’m starting to develop a project where I need to identify some TAGS - NFC or RFID, at this point, it is just in the project stage.
I was wondering if I can connect three RFID grove readers or NFC to the grove shield. I’m going to use a XIAO SAMD21 with a UART HUB or the XIAO expansion board.
I know the RFID uses UART and the NFC can be both.
Is it possible ?
Thank you.
It is possible to connect three RFID Grove readers or NFC to the Grove Shield using a XIAO SAMD21 with a UART HUB or the XIAO expansion board.
Since RFID readers use UART communication, you can use the UART HUB to connect multiple RFID readers to a single UART port on the XIAO board. The UART HUB will allow you to select which reader you want to communicate with by enabling or disabling the corresponding UART port.
On the other hand, NFC can use either UART or I2C communication. If you are using an NFC module that supports UART communication, you can connect it to another UART port on the XIAO board or use the UART HUB. If you are using an NFC module that supports I2C communication, you can connect it to the I2C pins on the Grove Shield.
By the way, here is a shopping cart project based on RFID. This may interest you too:
Hi !
Thank for the reply. I misspoke above - there’s no such thing as a UART HUB… Need to find another solution