Hey guys
I am trying to build some flashing disco lights that react to sound. I am still on the first stage -- the sensor. I have an electret microphone circuit that I built but it is not sensitive enough. I literally have to blow into the mic to make the LED light up. How would I increase the sensitivity of this circuit ? I do have an AUDIO operational amplifier (386) in my tool box but have no idea how to use it (I am using the LM741 atm) so I don't know if that will help. Could someone please give me some pointers or a schematic that will enable me to complete this section of my project.
I already know how to build the flashing part from what I have learned already.
This circuit will eventually drive a monostable.
Here is my schematic (sorry couldn't find the diagram for a microphone so had to use a speaker.)
[attachmentid=486]
Thanks in advance for any help
- Happs
I am trying to build some flashing disco lights that react to sound. I am still on the first stage -- the sensor. I have an electret microphone circuit that I built but it is not sensitive enough. I literally have to blow into the mic to make the LED light up. How would I increase the sensitivity of this circuit ? I do have an AUDIO operational amplifier (386) in my tool box but have no idea how to use it (I am using the LM741 atm) so I don't know if that will help. Could someone please give me some pointers or a schematic that will enable me to complete this section of my project.
I already know how to build the flashing part from what I have learned already.
This circuit will eventually drive a monostable.
Here is my schematic (sorry couldn't find the diagram for a microphone so had to use a speaker.)
[attachmentid=486]
Thanks in advance for any help
- Happs