So I'm trying to develop a circuit that will allow LED's to turn on and off depending on what the frequency is. I have decided to split the circuit into three parts; the first one detecting anything from 0hz - 2kHz; the second stage detecting 2kHz - 6kHz; and the last stage detecting anything over 6kHz.
I built a little demo board of the low pass filter and although it worked I wasn't getting the rolloff that I wanted. Hence I decided to cascade two filters and see if that helps.
Here is what I have so far:
*Soon to come: a bandpass filter for the second stage and a high pass filter for the top end*
I built a little demo board of the low pass filter and although it worked I wasn't getting the rolloff that I wanted. Hence I decided to cascade two filters and see if that helps.
Here is what I have so far:
*Soon to come: a bandpass filter for the second stage and a high pass filter for the top end*