11-25-2020 04:40 PM
I am automating my boat with Labivew, in Alameda Ca)
I receive GPS data via bluetooth (Garmin Glo)
I communicate with my autopilot via NMEA communicated via TCP (Comar i320W)
Currently I just send heading data, and the autopilot changes to that heading.
Fun Times!!
Now I wish to tell it to go to a "waypoint" (Lat and long on an xy grid)
this takes high end trig that I forgot pre covid.
Any thoughts?
11-26-2020 12:58 AM
Hi Chad,
@Chad_Peddy wrote:
this takes high end trig that I forgot pre covid.
Any thoughts?
Get a book on basic math (including trigonometry) - read and learn.
Then setup the formulas to convert from position/distance to heading/speed parameters…
(I don't think this will be "high end trigonometry"…)
11-26-2020 02:08 PM
@Chad_Peddy wrote:
Now I wish to tell it to go to a "waypoint" (Lat and long on an xy grid)
My first thought is that Latitude and Longitude are not coordinates on an XY (planar) grid, but are coordinates on a spherical surface. Makes it an even more fun math problem, as the shortest distance between two points is part of a Great Circle whose center coincides with the center of the Earth (if I remember my math correctly ...). I suspect that Spherical Polar coordinates are going to be involved sooner or later.
Bob Schor
12-17-2020 08:42 PM - edited 12-17-2020 08:43 PM
12-17-2020 08:42 PM
Thank you, your input is valuable