Arduino Uno + RFID reader + 8ch Relay module + 8 ID cards

Projects Programming
1

Hi,
I need control a 8ch relay module with a RFID reader module.
But, just one card will be actived a determinate relay.
Arduino Uno + RFID reader + 8ch Relay module + 8 ID cards.
How write this code???
TKS for any help!!!

2

Use an RFID library that matches your RFID reader to read the card ID. Start with an example sketch which reads the card ID. Compare the card ID to your 8 ID's. If there is a match, turn on the corresponding relay.