[wireties]

It is common, in industrial applications, to have soft and hard limits. The soft limits are software/firmware inputs but the hard limits turn power off and implement safety protocols. Duplicate analog sensors, encoders etc are also common. In FIRST the rules kinda prohibit "hard" limits. And duplicating other sensors is kinda expensive.

This year we doubled up the limit sensors on our cam-based catapult. Not knowing when the cam was in the launch position was bad news!