Good day, Arduinoists! I am looking for some help in designing a circuit for a friend of mine. Here is the basics of my idea: I have an ESP8266MOD chip I am using that I'd like to monitor & regulate an LED bulb using a MAX4466 Microphone (brightness of LED is in reference to vocal strength), along with a switch to turn off the circuit in order to conserve power supply life. I do not know what type of PS I'd need, AC or DC, but I want to attempt to make it highly mobile, but not too heavy since the project is designed to be worn (2x 3" diameter x 1" height spaces, external PS could be possible). I am unable to grasp the basics of Current, Voltage, Resistance and what not (trust me, I've been trying for 2 months to understand fully), so I'm a bit in over my head on this, but I'd really like some assistance on where and how to get started. Whatever extra components I need, I can get. Please lend me your words of guidance! 
Hello @azrtheal. From your question I'm guessing you have very little experience with electronics. Aren't you making your project unnecessarily complicated? I mean, if you want the LED to glow with different brightness depending on the sound received in the microphone, you don't even need a microcontroller, i.e. ESP8266 is not needed. Since you didn't say what LED you are using, you might just need to amplify the output current from the MAX4466 with a transistor.
I'll be using a blue light LED diode, which I'd looked up to be about 3-3.3v. It is possible I could be making it far too complicated since I usually manage to do that with everything. if there are any tips that can be offered, I'd appreciate it.
For what current? If it is one of the small round 5mm LEDs for about 20mA, you can try to connect it directly to the output of MAX4466 - maximum short-circuit current at the output 15mA. If you want to learn more about electronics, you might want to check out this site.
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