Aswin
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
new version is 2.1.5
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
How is the quality of your calculated mast angle.?
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Hi Beatrix, There was a bug in the mast angle code. This is noe fixed. Also, the webApp will noe show the mast angle, so it is more easy to check its value.
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I do want to understand mast rotation a bit better. Do you set the mast angle like you would set a rudder or is mast rotation the result of sail trim? Does it vary a bit when you are on a steady course? Do you have real life data of the two sensors that you might want to share with me? I might be able to help you writing a filter to calculate mast angle.
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I do not have a suggestion for a path. I quick look into the keys reference didn't not show any obvious candidates or suggestions. The plugin allows you to specify the name of the path for mast rotation. No metadata is needed. The plugin assumes the rotation is in radians and that a positive angle is clockwise.
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
These are both IMU sensors with comparable abd decent specs and characteristics. I think it could work to determine mast rotation from the difference between the two.
Have you concidered using a rudder angle sensor for this? I think it will give better results as the measurement is more direct.
You could even make your own non contact sensor using this https://automation.honeywell.com/us/en/products/sensing-solutions/sensors/motion-and-position-sensors/magnetic-position-sensors/arc
31 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Do you have two compass sensors or are they really IMU sensors (like a precision-9 or a DST-810). And do they have the same characterisitics? I ask because the old compass sensors react slowly while IMU sensors can respond more quickly. If both sensors have different characteristics you can introduce errors when combining the two.
31 replies
SKSignal K
•Created by Aswin on 12/30/2024 in #plugins-and-webapps
Aswin - Finishing my advanced wind plugin.My a...
Sometimes its too simple to see. Thanks.
7 replies
SKSignal K
•Created by AdrianP on 12/28/2024 in #plugins-and-webapps
AdrianP - Do you have "allow read only access" ...
Yes, I have
1 replies
SKSignal K
•Created by barnaclebill on 12/18/2024 in #plugins-and-webapps
barnaclebill - Question for @Aswin, although it...
The plugin comes with a basic app that shows the effect of each correction.
5 replies
SKSignal K
•Created by barnaclebill on 12/18/2024 in #plugins-and-webapps
barnaclebill - Question for @Aswin, although it...
About roll and pitch. The angular speed (in 3D) of the boat is calculated from its attitude change between two wind Delta's. Using the height of the sensor this is transformed into a lineair speed (also in 3D). This speed is then substracted from the apparent wind speed.
5 replies
SKSignal K
•Created by barnaclebill on 12/18/2024 in #plugins-and-webapps
barnaclebill - Question for @Aswin, although it...
Leeway is not calculated from the difference between heading and course over ground. It is based on an approximation.
5 replies
SKSignal K
•Created by barnaclebill on 12/18/2024 in #plugins-and-webapps
barnaclebill - Question for @Aswin, although it...
The readme and the plugin config show the formulas and parameters for each approximation.
5 replies