Hello good morning
I am implementing the NFC PN532 v3 kit for a future application and at the moment I only want to recognize the tag and turn on an LED. I am programming it with an arduino but what I want is to be able to use a pin to control the LED of the NFC module and not of the arduino. say that it is completely independent of the arduino and that it only needs to power the module to turn the LED on and off if it reads the tag, how could it do this since I have seen that most control the external hardware with the arduino but the PN532 chip has an internal MCU and it would be good to make use of it.
which PN532 board do you have? do they expose a way to control that LED?
EDIT
looking at the design of the board
it seems there is no control of the LED, it's on as soon as there is 3.3V power.
There are some 20 different Arduinos. Your words here tell nothing for us to use.
Please read and use the topic: How to get the best out of this forum - Using Arduino / IDE 1.x - Arduino Forum
Schematics show it all, logic wiring, powering....
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