I work on a ship and we have a very old technology onboard called the "listometer" (list lights) which gives us an idea of how much the ship is listed to either side when we are loading or ballasting. It will indicate roughly 1 degree increments.
I'd like to make an electronic spirit level, from -5 to 0 to 5 degrees with indication lights every 1/2 or 1/4 of a degree. (And later be able to set user defined alarms if a value is exceeded)
From what I have been reading about accelerometers they can be difficult to get resolution below 1 degree.
Would this setup need to be calibrated every time it is powered on? I'd like to mount it directly to ship and only calibrate it once if possible.
Thanks for any help!