I'd like to make a bracelet which has an RFID tag and LEDs inside of it. I made a device
(using Arduino and rc522) that will categorise people's bracelets into one of 3 categories when it touches the RFID tag on the bracelet and writes that category(i.e 2). I want the bracelet to be able to read the category from the tag and light up the RGB LED to the corresponding colour(i.e light up green when priority is 1).
I tried some stuff with adafruit st25dv16 but I think rc522 isn't compatible. Could someone please help me figure this out. Maybe I can use attiny in it somehow? I'd like the bracelet to be relatively small and low power. Thank you.