Hey, I was wondering if I anyone could give me some help in designing a VU meter.
Essentially what I am looking to build is a circuit that has 4-5 LEDs that light up at different levels. It would sit in loud environments to warn workers when ear protection must be warn. 1 green LED means safe, 1 yellow means getting loud, 2 yellows means protection should be worn for safety, 1 red means definitely need ear protection. That sort of thing.
I've read into a lot of circuit diagrams and it is my understanding I will need the following:
a microphone connected into an amp (not sure?) which then leads through various resistors/capacitors and results at an LM3915 (or LM3914 if I want linear)
I guess what I am asking for is any direction here. Whether it being formulating equations or designing the circuit. I'm not sure where to begin.
Many thanks
Essentially what I am looking to build is a circuit that has 4-5 LEDs that light up at different levels. It would sit in loud environments to warn workers when ear protection must be warn. 1 green LED means safe, 1 yellow means getting loud, 2 yellows means protection should be worn for safety, 1 red means definitely need ear protection. That sort of thing.
I've read into a lot of circuit diagrams and it is my understanding I will need the following:
a microphone connected into an amp (not sure?) which then leads through various resistors/capacitors and results at an LM3915 (or LM3914 if I want linear)
I guess what I am asking for is any direction here. Whether it being formulating equations or designing the circuit. I'm not sure where to begin.
Many thanks