hi..
I'm using this circuit in my project. Its a sound to light converter..
the output voltage varies according to the sound intensity on the mic..
Now, I'm going to use this output voltage as an input to Atmega32 ADC.. Afetr that, based on the voltage levels, i'l drive a dc motor..
here is the circuit diagram
**broken link removed**
So, I have a few questions, kindly answer them, please..
1. Can anyone explain me full the operation of the circuit?
2. At the output, i.e. the base on the transistor, there is negative voltage..
Can Atmega 32 accept negative voltage for ADC conversion? If not, how can i convert it to positive, i.e of the same value..
3. I need to make the mic 'directional', Is there any way to do so?
kindly help me out... I'm using this for my project.. so i need some info.
Thank You.
I'm using this circuit in my project. Its a sound to light converter..
the output voltage varies according to the sound intensity on the mic..
Now, I'm going to use this output voltage as an input to Atmega32 ADC.. Afetr that, based on the voltage levels, i'l drive a dc motor..
here is the circuit diagram
**broken link removed**
So, I have a few questions, kindly answer them, please..
1. Can anyone explain me full the operation of the circuit?
2. At the output, i.e. the base on the transistor, there is negative voltage..
Can Atmega 32 accept negative voltage for ADC conversion? If not, how can i convert it to positive, i.e of the same value..
3. I need to make the mic 'directional', Is there any way to do so?
kindly help me out... I'm using this for my project.. so i need some info.
Thank You.