I have an RFID reader that sends a high 5V logic level when it is triggered (RFID tag is seen by the antenna).
I want to then use this 5V output to trigger an ESP32 to turn on an LED and also send an SMS. I know the ESP32 is only 3.3V so sending a 5V signal will damage the GPIO pins. Hence since this 5V signal from the reader is not a periodic signal, at most the reader will be triggered 5 times per day. is it then okay to just use a voltage divider instead of a more complicated MOSFET level shifter?