Re:The laser and microphone atop Mars 2020, NASA's next rover
by MertsA on Tuesday February 11, 2020 @08:19AM
(#22298214)
You'd be interested in Ben Krasnow's DiY attempt. It's still understandable but he tries to explain why it's built the way it is and give you a good basis of the theory of operation.
https://www.youtube.com/watch?v=nIKhUizkXxA