Beatrix
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Back to your suggestion about the Honeywell angle sensor, I think that is the gold standard for measuring the mast rotation and if I feel that the two compass method is not sufficient then I'll start to look into doing that. However it seems to open up another frontier for me in terms of needing to understand I2C etc. The first step of getting data off the N2K system -> Signalk -> Node-Red -> Signalk-> N2K has been plenty challenging enough :-). I feel like doing some data averaging and data smoothing will improve the Mast Angle figure enough to be satisfactory to me.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Is there any specific meta data that your plug-in requires? Do you have a better suggestion for a Path than " self.rig.mast.angle"? I thought I saw a reference to "rig" in some documentation I saw somewhere, although it is clearly an orphan. I know there is a path category for "Sails" but mast angle doesn't fit there at all.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
The next stage for me (which is trivial for others, I know) is to a) select a SignalK parameter name for the mast angle measurement and b) set up the meta data around the delta that will be sent out from Node-Red. Then work through the appropriate signalk node to export the delta to signalk so your AdvancedWind plugin can do all the important work for me.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I agree that using a honeywell sensor would be more accurate, but I have the equipment now, and figure that for me getting the software working is a bigger challenge than getting the hardware changed.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Thanks Aswin for confirming the tech used in each of these two sensors. It's not often that teh outcome is better than I expected.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I'm not using this for autopilot, just as some secondary guidance to Apparent Wind angle -> True Wind, which I hope to assist with developing polars etc.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
However atm, I have nothing, so anything will be an improvement. Assuming I can get the system working in prototype, I'll then be able to investigate some higher quality sensors if they seem to add value.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I've got a B&G ZG100 as the main boat heading sensor, and a Garmin SteadyCast mounted to the mast for "Mast heading". I've read through the specs on both units but don't recognize the tech used as IMU (Inertial Motion Unit), so pretty sure that neither are paticularly accurate or highly responsive (10hz max I believe).
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
But anyway Chapeau to all who are creating such a powerful and useful set of tools. Thanks
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
Using two compasses is clearly inaccurate. I propose to integrate some averaging and smoothing to get a better "Mast Angle" reading. For a complete newby like me getting to understand the Node-Red -> Signalk -> NMEA2000 protocols and languages is interesting and fun, but a huge time waste which could be done much more quickly and intelligently by people who are smarter and more experienced than me.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
For me this is very exciting. My suggestion is that the calculations that provide the Mast Angle number would be ideally integrated into "Derived Data".
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
I have used Node-Red to create a Mast Angle parameter using two compasses. The output will feed into Advanced Wind to give me back updated Apparent wind and all the rest that this app can deliver.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
So SignalK's ability to address this is very important to me, and others. Aswin, your new "Advanced Wind" plugin is extremely interesting.
22 replies
SKSignal K
•Created by Greg Johnson on 11/17/2024 in #questions
is there a reference key for mast rotation?
As a racing sailor with a rotating mast the issue of getting wind data into the system is a huge problem. Clearly the big boys (Navico etc) regard rotating masts as a tiny niche, not worth working on.
22 replies