I'm quite late to the party, but ... WOW! Kudos to you @Microkit for getting this done and Norsee certified!
I've actually wanted this exact device for a very long time - back in 2017 when I was a mx officer for a club with two 172's I was looking at taking a Garmin V3HP Lidar and interfacing it to an Arduino board (along with barometric pressure sensor and OLED screen) to create a poor man's radar altimeter callout device and cruise altitude alerter (with C chime and everything). Unfortunately I don't know jack about computer programming so that never took off beyond concept.
I don't own the Mooney I'm flying but if it were, I'd pick this up in a heartbeat. I occasionally fly into my old home airport (where the abovementioned flying club is at) at night but the runway is flanked by trees and has a very pronounced bowl shape (downhill slope on both ends) which makes the touchdown somewhat an affair of luck. Perhaps I'll convince the owner to get one.
