Is is feasible to build an audio recorder with SD card storage using ATmega 16 or 32 running at say 16 MHz? If yes, what would it need in components? I don't expect you to make a device for me, but ...
I'm using an Atmega328 chip with the arduino bootloader in a very small circuit. The sketch simply plays a tune using the tone() function to play a melody through a piezo speaker on a single pin. ...