Arduino NANO + RC522 Interrupting the reading

Projects General Guidance
1

Hello, I am just starting my adventure with Arduino and encountering the problem of reworking the example attached to the library MFRC522 - DumpInfo.

I would like RFID to be read for 20s from the moment the button is pressed (it is about random reading and saving the battery)
However, interrupting GND causes the reader not to start after pressing the button.

Please help.

2

Try to interrupt + instead of GND. It may take some time until the reader becomes ready, or it wants to be explicitly reset after every power on - check the library code.

3

Interrupt + also does not give anything. Is there any possibility that the reader will be launched only after clicking the button?

4

Which button?

5

Button, eg below input D4.
After pressing the button, the RFID tag can be read.

6

So you are not informed when the RFID has been attached again? This should be fixed, somehow.