tarantulataramasalata
Senior Member
If I made noises of a specific frequencies at a picaxe chip, I could probably hook a mic to an analogue input and get a different output for each different frequencies.
If that is the case (please correct me if I'm wrong!) could one then just miss out the speaker/mic bit and send the output from the headphone socket straight to the picaxe? would it need an opamp, or praps just a transistor? what about the darlington pair BCX28B?
If that is the case (please correct me if I'm wrong!) could one then just miss out the speaker/mic bit and send the output from the headphone socket straight to the picaxe? would it need an opamp, or praps just a transistor? what about the darlington pair BCX28B?