An Arduino Nano controls two relays which in turn can turn the car on, start it, and turn it off. Instead of adding a button for “push to start” he opted for a 13.56MHz RFID module.

The Arduino code tells us that the valves ... As the valves use 24V and the motor 12V, standard N-Mosfets and power relays are used for voltage conversion. The remote controller [Gilard] used ...

This code is for an RFID door lock system using an Arduino. It reads the UID of the RFID card and compares it to a predefined ...