I have an Arduino Uno that I bought a few years back. I want to know if there is a RFID shield I can use with it. I am trying to make an out of date change machine dispense change with the swipe of a card in front of it for a home arcade. There is a plastic area in the front so I have no worries about getting a signal through it. A range of less than an inch would be fine. I also need a relay that I can use to make the Uno switch 110V momentarily on, to activate a 110v solenoid which drops the change. I believe this is doable, even though I barely completed the blinking light stage in my Arduino learning. Does anyone have some Sparkfun part numbers that might help me? I’ve looked on the site, but I am not sure what would be compatible with the Uno or if such a shield exists.
Thank you.