Hi,
This is a proyect wich is a MP3 player connected with a SD Card Module to play music, but when a person gets into HC-SR501 sensor will play an alert sound to a speaker connected into the 3.5mm jack.
I'd like to ask you if the jack requires any resistor, capacitor or anything else.
The led light there is just for testing purpose, to see if the sensor detects the person.
Thank you.
