Hi all, I've made a nifty little multiplexer with an Arduino that uses a few inputs and outputs the VDR sentence, which is Set and Drift. For anyone who wants to replicate it, the instructions and code are available for free on my personal blog here
Here's a sample output in the San Francisco
And the output:
It's basically saying that at that point, the current
should be flowing towards 255 True at a speed of 2.5 knots. My instrument says the current
is 237 @ 1.89 knots (I discovered the error was because my heading sensor was skewed by about 15 degrees and I hadn't calibrated the compass).
But is there any way to plot the vector over my boat? Course Made Good and Speed Over Ground are plotted as a red long dash vector; Heading (True) and Speed Through Water
are plotted as a red short dash vector; so is there a plugin out that that could plot the Current Set and Drift as a dotted line vector, or hollow line? Or any sort of vector?