Help with sound reactive LED Answered
Heyy there since i am new to this forum i might have made this question in the wrong section
So...i have built a sound reactive LED with a TIP31 transistor that it is powered by a 5.2 volt power supply and it works like a charm! You just plug it on the wall and plug the 3.5mm jack on your output and done!
But here is the problem...my laptop's sound card is to weak to power the LED properly so i attached it to my stereo system.It worked better but when i turned up the volume it kept glowing instead of flashing to the beat because the music was loud.My question is..should i use a resistor between the stereo output and the sound reactive LED so it will flash when the music is loud? If yes how many ohms?
(PS I am new to these stuff but i know the basics and know how to solder two wires.)
(PS No2 I have attached some pictures with the simple schematic and the whole project.)
(PS No3 Sorry for my English it's not my mother language.)
(PS No4 The uploader is not working for some weird reason so i am not able to upload the pictures)