@mxtommy KIP instrument display webapp for Signalk

[Techstyle]

@MXTommy,

I have a feature request - I would like to display times - current time and ETA.  I am especially interested in ETA

currently there is not an ETA spat out by Opencpn but I have created it within 'Derived Data'  - but it is a text string - as the other Dates/times in SignalK and is based on Zulu time.  I would like to be able to show the time in a friendly, usable format.  if it need to be in a different format then I can update the eta.js.  I am currently showing it as the picture below:

   

if you want to test the eta.js and have Derived data installed then copy the file attached in to the directory:

Code:

/home/pi/.signalk/node_modules/signalk-derived-data/calcs/

 
Once enabled, you will get a signal k phrase "navigation.courseGreatCircle.nextPoint.eta" when you have a next point and a VMG

As you were talking about creating a screen for XTE in an earlier post.  If it helps, I did create another 'Derived data' term for 'steer error', where XTE is about the distance you are from the Rhumbline, what I think you want to know is the error between your current heading and the next waypoint so I created phrases "navigation.courseGreatCircle.nextPoint.rightSteerError" and "navigation.courseGreatCircle.nextPoint.leftSteerError"  and I display them like the picture below: 
   
i did also add just steer error and the sign tell you the direction if you prefer.

I have also included the steer_error.js

thanks
Techstyle