Earlier quoted context omitted.
I personally believe using mass market makes sense. I don't understand the criticism I've seen on this website for using off the shelf controllers or camping lights (what do you expect, an LED strip magically engineered by a large aeronautics firm specifically for the sub? and what would that change?). That being said, the difference between a Microsoft controller and a third party is that Microsoft very certainly di…
> and what would that change? Suitability for purpose. Some obvious ones: Defined and validated environmentals (temperature, voltage, and in this case pressure). Qualified components — capacitors chosen for lifetime rather than shaving a cent, perhaps avoidance of MEMS oscillators with helium sensitivity. Failure analysis. Low and understood probability of fail-unsafe conditions (short circuit), mitigation for those…
Not many companies have NASA levels of "throw money at it until it works, and every part has been signed off on five times."
Absent that, I'm having trouble seeing how custom > COTS.
In all probability, anything in-house would have been worse and added new failure modes.
Better to buy, analyze, and adapt as needed.
And if it turns out you don't need to adapt, because failure modes aren't safety-critical or components are viable in the environment, then spend your time on something more useful.