gregy - anchor alarm plugin@Scott Bender ju...
anchor alarm plugin
@Scott Bender
just wanted to check some of my own logic,
i noticed when re-reading plugin description, that it will set initial radius to D x 5.
q: did this change at some time over past year? (maybe more)
i recall it initially was a fixed ammount, so
i built some nodered logic to set initial radius when i “auto drop” ..
but thinking now i can remove it from my flow.
q: i assume it does the calc & sets radius at the point of calling the “drop anchor”
(good.. as this will stop it alarming whilst i set anchor)
🙂 i cant test, as im currently at anchor with alarm set!
Q; D is obviously depth below surface …. I assume anchor bow roller height is not used in calc?
37 Replies
That’s when setManualAnchor is called. It does use bow roller height
That should be used after you have already anchored
ok now im confused .. normal
it uses bow roller height, but only when calling setManualAnchor?
when using dropnchor - what does it do? (for alarm radius)
dropanchor does not set the radius
It simply marks the anchor position
ah! thats why i built logic into my flow .. its all coming back now
Once you let the rode out, call setRadius
Then it sets the alarm radius based on your distance from the anchor position saved when you dropAnchor
In WolhelmSK, you can hit the anchor button at the top when you drop it. It will turn yellow.
understand, however i have an “auto drop” nodered flow..
i auto call drop anchor - when chain is going out AND its length exceeds DepthBS
i then back up etc…
i set an alarm radius at deop, so that alarm doesnt go off whilst anchoring.
Once you’re done letting the rode out, hit again. It will turn green.
yep understand… but i recall kept getting an alarm … and this was to overcome it
The alarm won’t go off after calling dropanchor. Not until you setRadius
ah ok… i must have messed something up …
Maybe there was a bug at one point… I don’t think so.
…. ok, but fairly certain i used to (2 yr ago) get an alarm whilst setting… i know i went down the path for some reason 🙂 maybe it was something else..
.. anyway i will keep my flow… seems to work .
but im going to update flow to include bow roller height in my calc when i set initial radius… (my bow roller heigh vs shallow water … messes with the x5 calc!)
Why not just call setRadius (with no radius parameter) when you’re done?
how does this calc alarm radius?
It uses gps position, it knows where the anchor is, so it just computes your distance from there.
So no need to take rode length, etc. into consideration
(when you drop anchor, it does use boat length, heading, gps location on the boat to compute the anchor position when you dropAnchor)