As I can understand, there is not enough input sensitivity from the mic in order to trigger the circuit. When I tried to connect, the input pins A & B (mic input) with a piece of wire then it was working good.
What is wrong?
Need Circuit to Control the Sony cdx-601 car 10cd changer at home
Recently someone has stolen my car system but not the cd changer.
Without the Sony car stereo there is no way to operate the cd changer!
Can anyone help me build a controlling circuit to operate the cdx-601 at home?