I'm new in Arduino and I have some question.
I need to create sound frequency meter, but I dont know how to start.
Actially my theme s connected to http://forum.arduino.cc/index.php?topic=13906.0
I find info that sensor KY-038 exists, that have microphone and analog and digital output. AO, analog output, real-time output voltage signal of the microphone DO, when the sound intensity reaches a certain threshold, the output high and low signal
Is it possible to get scalar sound frequency from this sensor ( like 200Hz, 240Hz). I need to determine sound frequency only in interval between 150 and 350 Hz.
If it is not possible to get sound frequency data from KY-038, tell me please, what sensor do I need to buy?
I also find sound recognition module, may be I need to use it instead of KY-038?
Please, give me some start point?