. Yep, that's me on the cover picture, doing inverted twist with a foil board .
I actually spent a lot of time trying to tackle VMG.rnelias wrote: ↑Thu Oct 14, 2021 5:57 pmLaurie with great content as usual!
I've been using a Fenix 6S that replaced a previous 5S. I'm pretty addicted to Garmin watches. I only miss the LTE feature. For kitesurfers it would be a safe feature but only a few Garmin models have...
@Aleks is it hard to include VMG metrics on the Woo app? I suppose we should set up wind direction before the session right?!
Based on the total tracks from GPS you should be able to come to quite an accurate wind direction I would say. VMG maybe interesting for foilers but not personally...having the wind direction as additional feature in the app would be great though.aleks wrote: ↑Fri Oct 15, 2021 3:02 amI actually spent a lot of time trying to tackle VMG.
I worked on an automatic wind direction calculation on the watch (based on your riding direction pattern). I wasn't happy with the results - they were too inaccurate to be usefull.
Regardless of the calculated or entered accuracy of the wind direction - I found that shown upwind angles and VMG were rarely usefull during a session. It might be because wind constantly veers left or right, but I often saw that I have much higher VMG riding to one side than the other. Then it can go back to normal, or not . Anyway, it was enough to distrust the measurments overall and set the project aside for now.
However, I would love to finish the automatic VMG project. I'm not very interested in entering wind direction manually - there are already a few apps that do it. It would be easy to replicate the functionality, but I find it cumbersome and potentially very innacurate. I'd rather keep improving wind detection algorithm. If anyone has any ideas on how to do it, please share them - I'll see if I can implement them on a watch
Normally you can come up with wind direction after 10-15 minutes of a typical track (if you are not going one way for the whole time ). The problem is to make the algorithm accurate - 5 degree error in wind direction will result in 10 degree difference in your upwind angles (side to side).Kitemenn wrote: ↑Fri Oct 15, 2021 8:11 amBased on the total tracks from GPS you should be able to come to quite an accurate wind direction I would say. VMG maybe interesting for foilers but not personally...having the wind direction as additional feature in the app would be great though.aleks wrote: ↑Fri Oct 15, 2021 3:02 amI actually spent a lot of time trying to tackle VMG.
I worked on an automatic wind direction calculation on the watch (based on your riding direction pattern). I wasn't happy with the results - they were too inaccurate to be usefull.
Regardless of the calculated or entered accuracy of the wind direction - I found that shown upwind angles and VMG were rarely usefull during a session. It might be because wind constantly veers left or right, but I often saw that I have much higher VMG riding to one side than the other. Then it can go back to normal, or not . Anyway, it was enough to distrust the measurments overall and set the project aside for now.
However, I would love to finish the automatic VMG project. I'm not very interested in entering wind direction manually - there are already a few apps that do it. It would be easy to replicate the functionality, but I find it cumbersome and potentially very innacurate. I'd rather keep improving wind detection algorithm. If anyone has any ideas on how to do it, please share them - I'll see if I can implement them on a watch
$12?! That's an overkill. The smart thing would be to tell time by the sun or train yourself to have an internall timer!cor wrote: ↑Fri Oct 15, 2021 4:58 pmMy watch for kiting costs 12$, is waterproof and has this amazing functionality that let you measure time. It doesn´t track anything, has no GPS, requires no data sync, almost doesn´t need any charging and if it falls off I will just shrug and buy another one for 12$. I think that´s a "smarter" watch than any actual smartwatch you can buy out there.
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