Question

Which Arduino Board Architectures can the Audio Frequency Meter Library work on?

(a) SAM Architecture

(b) Intel Architecture

(c) SAMD Architecture

(d) ARM Architecture

This question was posed to me during a job interview.

I would like to ask this question from Other Libraries in chapter Arduino Programming of Arduino

Answer 1

Right answer is (c) SAMD Architecture

To explain: The Audio Frequency Meter Library only works on Arduino Boards having the SAMD Architecture, including the Arduino Zero, MKRZero, etc. It allows for the sampling of an analog signal and finding out it’s frequency. Any analog pin is supported for this operation.