Tom 5.3.2012

Start: 10:40

  • Read up on decoupling capacitors and found that I am using them correctly but maybe the traces are too long.
  • After careful consideration of how to solve the problems with the boards, I decided to send the negative signal wire from the amp input to ground instead of the negative lead on the pre-amp.
  • This has solved the problem with the feedback loop and made it so only one speaker plays at a time.  Whatever was wrong before must have something to do with the negative traces.  I am not sure if the sound gets as loud as it did before but there seems to be less distortion.
  • Did a bunch of testing with different sounds and stuff to make sure everything was working properly
  • Added board design changes to changes checklist.
  • I haven’t built the connector for Phil to test the analog input yet but if he wants he can use the ones on the boards that are working while I build that tomorrow.  I probably should help with this to make sure the right wires are used.

End: 6:40