I am baffled by the suggestion that a Raspberry Pi could ever be considered a competitor to an Arduino. It's akin to saying a Doctor could equally use a scalp

I am baffled by the suggestion that a Raspberry Pi could ever be considered a competitor to an Arduino. It's akin to saying a Doctor could equally use a scalpel or a kitchen knife for surgery. It is possible, but there are different knives for different jobs for good reasons. Collecting sensor data? Arduino is a lot leaner and to the point. Performing computations on sensor data? Might be better to use a Pi.