I’ve been messing with my phones features, and I’ve had ideas in my head about how i could use the sensors on it, so it got me thinking about new technologies, or ideas that could use those sensors to do interesting things. Haven, (an app i found while browsing f-droid) uses the sensors in a very interesting way, it can detect whenever the phone is moves, if theres a loud noise in the room, and other cool things, the point of it is to secure private spaces. This is a practical use for the sensors on a phone. It could also be used in creative projects as a trigger, such as a light being switched on, the phone then turns on the heater automatically. (I wish i could be like Mike Rober, and build anything i wanted.) (Picture kinda related)
I am in Marine sector. You may not have heard but soon the future of slow speed diesel engines as alternative and green fuel is “ammonia”.
Here is a good read
https://www.man-es.com/docs/default-source/marine/tools/man-b-w-two-stroke-engine-operating-on-ammonia.pdf