3 ms·
None of the GPIO pins are analog, all of them are discrete. As for sampling audio from a cassette recorder you can use its USB - easier solutions already exists
by unnouinceput 6y ago
None of the GPIO pins are analog, all of them are discrete. As for sampling audio from a cassette recorder you can use its USB - easier solutions already exists. Why complicate stuff through GPIO?
- rbanffy 6y agoSorry. I had the impression it had some form of PWM. In any case, we can always make it work with a square wave.