That's why he said he wasn't going to use it for IFR flight
For IFR flight, the system from Blue Mountain Avionics would be a better choice. It doesn't even have an operating sytem. Instead, it's more of an embedded controller. Of course, BMA's system costs $9600 (plus servos and engine sensors) compared to the homebrew system's price tag of around $2200 (over half of that is for the Rocky Mountain MicroEncoder. Using the homebrew system in IFR conditions could give new meaning to BSOD.