My audio circuit woes are that:
- There is a lot of hiss in the background when I record.
- There is noise caused by motors (I have mitigated against this somewhat)
- There is distortion.
- The volume isn't loud enough.
There is every indication that the LM386 isn't powerful enough to cut the mustard. I bumped up the power to 9V on the amp and that helped some. I built a "Better" amp circuit based on the LM386 that had less distortion, but it still wasn't loud enough and it is still on the breadboard. I don' t know that I have time to solder it up for the festival (starts at 10am)
The end result is that the hack "worked" but isn't quite as impressive as I had hoped. I acquired another fish robotic toy called "Rocking Fish" which is a really bad knockoff of Billy Bass which is a bad knockoff of "Boogie Bass". So what I did is made a little umbilical cord and now the control circuit moves *both* fish. I hope that kind of makes up for the lame sound quality I am getting.
I will try to update my webpage tomorrow.