By connecting multiple ... code allows you to configure the type and number of RFID cards required to trigger one of the Arduino’s digital pins, which usually would be connected to a relay ...

Daisy chain in electrical engineering is a wiring scheme in which multiple devices are wired together in sequence ... the difference is that four bytes should be sent instead of only one. The Arduino ...

In this quick Arduino ... can use this code example to introduce a delay in your circuit. The variable “stayON” is used to delay() the program execution with the desired amount of time. In our case ...