Motivation In late 2015 I was doing my usual head-scratching about what gifts to get various family members for the holiday season. My wife mentioned making something electronic for my father-in-laws boat, and after a few hours of collecting thoughts came up with an idea: A Raspberry Pi computer, which could be powered off the boats 12v batteries. This computer would have sensors which made sense on a boat. Certainly GPS. I’d have some software which collated the sensor data and displayed i...