Hello all, I hope someone could shed some light to my problem. First off I have no knowledge how to calculate resistors or other values needed in a circuit. I found the 2 left circuits online and I combined them.
The first circuit is a blinking led based on the (electret) microphone input, which works, but the microphone is not sensitive enough as I have to put it onto the speaker so it detects the music. Second problem, since I want this to be a part of an ambient light display I don't want the music that I'm playing be super loud and I want it that it's able to pick up the sound from further away - how far? maybe at least 1 meter so I can have this on my desk. It's probably important but I don't need the mic to be static free and distortion free, but it would be nice if it were for possible future projects.
This is where the second circuit comes into play, it's an amplifier circuit that also works, but with the sound level of my speakers that I feel comfortable listening my music to, it only works from 2cm away from the speaker.
Can I make some simple changes with basic components? I do have various resistors, some transistors, I can find some different value vaps if needed and I have a bunch of these electret microphones if wiring them in parallel/serial would do anything benefitial. I want to run this off of a battery, preferabbly the cr 2032 button type (I'll use a power button), and I want to get rid of the potentiometer, currently I use it so I can adjust it if I use different values resistors (it affects the "level" when the led starts blinking based on mic input).
In case anyone wonder why I changed R1 from 47k to 15k, it's because the lower resistance helps with the sound detection threshold but it is not enough. I have tested that in the first circuit and using a 10k resistor didn't work as the led was on all the time.
And the last question would be, would I need to readjust any components or power supply if I used 2 or more of same leds either in parallel/serial?