I wonder if your values are strings rather than floating point numbers? If so, then you would need: *data['windSpeed_true'] = str(float(data['windSpeed_rel_mwv'])-float(data['SOG_kn'])* )
I had to run my version of "airmar.py" independent of WeeWx in order to more easily debug. When I was satisfied with my tests, then I went back to WeeWx. I had my driver working for awhile but then had some trouble related, I think, to the RaspberryPi not having a good clock. After I get a real clock and get things going again, I will document my driver development for Airmar 200Wx modified from Rob's. -JiM. On Saturday, August 8, 2020 at 3:14:11 PM UTC-4 [email protected] wrote: > Edit: I ment subtract not divide...sorry about that > > [email protected] schrieb am Samstag, 8. August 2020 um 21:07:44 UTC+2: > >> First of all thank you Jim and Rob for your patience ;-) >> >> Second I'd like to ask, if someone (more python versed) can tell me how >> to divide two values in the airmar driver. In my specific case it would be >> the *windSpeed_rel_mwv* - *SOG_kn.* SOG_kn is an value I extracted from >> the message >> *$GPVTD. * >> If I use *data['windSpeed_true'] = >> data['windSpeed_rel_mwv']-data['SOG_kn']* I get an error. So can anyone >> tell me, where my mistake is? >> What I have learned, it is not the exact or 100% right way to calculate >> "true wind" but I think I would be close enough ;-) >> >> Thank you in advance and best regards, >> >> Dennis >> >> [email protected] schrieb am Samstag, 1. August 2020 um 22:29:51 UTC+2: >> >>> Hi Rob, >>> >>> if I didn't get the technical manual for the wx unit wrong not all >>> messages are enabled by default. So some messages have to be activated >>> manually. Did anyone managed to do so? When I start minicom the sensor ist >>> talking but never listening. >>> @James: how are you coming on with this topic? >>> >>> Thank you and best regards, >>> >>> Dennis >>> >>> [email protected] schrieb am Donnerstag, 9. Juli 2020 um 22:04:31 >>> UTC+2: >>> >>>> Hi Dennis, >>>> >>>> One option to see the raw data in the terminal would be to put kplex >>>> between the usb and the weewx. Configure kplex to receive the messages >>>> from >>>> usb, and publish on a tcp server socket. Configure weewx to connect to >>>> that >>>> socket for messages. >>>> >>>> Kplex will log to a file if you configure it so, or you can simply >>>> telnet to the kplex tcp port and see the raw messages. You're looking for >>>> $WIVWT messages. >>>> >>>> http://www.stripydog.com/kplex/configuration.html >>>> >>>> I hope this helps, >>>> Rob. >>>> >>>> >>>> >>>> On Thu, 9 Jul 2020 at 20:02, Dennis Füß <[email protected]> wrote: >>>> >>>>> Hi Jim and Rob, >>>>> >>>>> first of all: thank you for your fast reply. >>>>> For the moment I have used windSpeed_rel_mwv but it turned out, that >>>>> the data I'm getting is the windspeed without the subtracted vessel >>>>> speed. >>>>> The main problem is, that I'm the "engineer" for the system but have >>>>> no possibility to test it in person on the lake, where the vessel is >>>>> located :-/ >>>>> >>>>> Maybe I explain my setup: >>>>> Airmar 150WX goes via NMEA 0183 cable to an RS422 to USB converter to >>>>> a raspberry pi 3 running weewx. Weewx stores the data in an influxdb and >>>>> grafana is showing them. >>>>> >>>>> @Jim: thank you. But where have you specified the mentioned data? I >>>>> mean in which configuration file? >>>>> >>>>> @Rob: you asked if I would receive the values for windSpeed_true_vess >>>>> etc. -> I tried to call it in grafana but it didn't show me data, so I >>>>> guess I don't receive them. Or is there a way to see all received >>>>> data/variables in terminal (probably a stupid question, but for the >>>>> moment >>>>> I don't know). When I open grafana it shows me the available data from >>>>> its >>>>> database, so I don't see any reason why available data shouldn't be >>>>> stored >>>>> in there, right? >>>>> >>>>> So I hope, that I didn't forget anything and stay thrilled for Jim's >>>>> findings ;-) >>>>> Thank you in advance and best regards, >>>>> >>>>> Dennis >>>>> Am Mittwoch, 8. Juli 2020 10:24:16 UTC+2 schrieb Rob Fuller: >>>>>> >>>>>> Hi Dennis, >>>>>> >>>>>> The device we use is at a fixed position so it's not something I've >>>>>> looked at before. >>>>>> >>>>>> Looking quickly at the code I see it does try to >>>>>> parse windAngle_true_vess and windSpeed_true_vess from the $WIVWT >>>>>> message. >>>>>> Does your device send that? >>>>>> >>>>>> Otherwise I'm waiting to see what James Manning comes up with ;-) >>>>>> >>>>>> Kind regards, >>>>>> Rob. >>>>>> >>>>>> On Tue, 7 Jul 2020 at 20:38, Dennis Füß <[email protected]> wrote: >>>>>> >>>>>>> Hi Rob, >>>>>>> >>>>>>> maybe you can help me out since Aleksandar seems to be gone for a >>>>>>> while. >>>>>>> I have an Airmar 150WX up and running but i doesn't seem to give me >>>>>>> any values for *windSpeed_true_vess*. Or in other words I don't get >>>>>>> the windspeed subtracted from the vessel's speed. >>>>>>> >>>>>>> Do you have any idea, how to accomplish this? >>>>>>> >>>>>>> Thank you and best regards in advance, >>>>>>> >>>>>>> Dennis >>>>>>> >>>>>>> Am Mittwoch, 10. Juni 2020 09:12:48 UTC+2 schrieb Rob Fuller: >>>>>>>> >>>>>>>> Hi James, >>>>>>>> >>>>>>>> I haven't looked at this for a while, but anyhow it was working >>>>>>>> okay. At Marine Institute we did something like this: >>>>>>>> >>>>>>>> wget -O bin/weewx/drivers/airmar.py >>>>>>>> https://raw.githubusercontent.com/fullergalway/weewx-airmar-150wx-driver/master/airmar.py >>>>>>>> >>>>>>>> && chmod 755 bin/weewx/drivers/airmar.py >>>>>>>> >>>>>>>> In the weewx conf we included these lines >>>>>>>> [Station] >>>>>>>> ... >>>>>>>> station_type = Airmar >>>>>>>> >>>>>>>> [Airmar] >>>>>>>> model = Airmar 200WX >>>>>>>> port = socket://10.11.104.5:10000 >>>>>>>> driver = weewx.drivers.airmar >>>>>>>> >>>>>>>> I hope this helps! >>>>>>>> Rob. >>>>>>>> >>>>>>>> On Tue, 9 Jun 2020 at 20:50, 'James Manning - NOAA Federal' via >>>>>>>> weewx-development <[email protected]> wrote: >>>>>>>> >>>>>>>>> Hi Rob- >>>>>>>>> >>>>>>>>> First, thanks MUCH for posting your "airmar.py" on github. >>>>>>>>> >>>>>>>>> I am a very novice weewx user. I just got the "simulator" working >>>>>>>>> on my RaspberryPi and now I want to hook up my Arimar 200WX. >>>>>>>>> From what I understand, I need to take two basic steps: >>>>>>>>> >>>>>>>>> 1) modify the weewx.conf to point to new station_type and set >>>>>>>>> driver=weewx.drivers.airmar >>>>>>>>> 2) put the "airmar.py" in my "user" directory which I think is >>>>>>>>> /home/pi >>>>>>>>> >>>>>>>>> Is that right? >>>>>>>>> -JiM. >>>>>>>>> >>>>>>>>> On Wednesday, May 20, 2015 at 12:05:58 PM UTC-4, Rob Fuller wrote: >>>>>>>>>> >>>>>>>>>> Thanks Aleksandar, >>>>>>>>>> >>>>>>>>>> I needed to make a couple of small changes for it to work with >>>>>>>>>> our device (Airmar 200WX). Mostly: >>>>>>>>>> >>>>>>>>>> 1. use pyserial socket:// url, since we are exposing the >>>>>>>>>> weatherstation using ftdi driver and kplex >>>>>>>>>> 2. added some detail in the log messages >>>>>>>>>> 3. added some leniency on the checksum verification (" F" == "0F") >>>>>>>>>> >>>>>>>>>> For the 200WX I'm still getting a couple of warnings, but haven't >>>>>>>>>> looked into it yet, and generally things seem ok. The warnings are: >>>>>>>>>> >>>>>>>>>> weewx[11]: airmar: Wrong data format for windchill_rel '' >>>>>>>>>> weewx[11]: airmar: Wrong data format for windchill '' >>>>>>>>>> weewx[11]: airmar: Wrong data format for heatindex '' >>>>>>>>>> >>>>>>>>>> I put the source on github for the moment here if someone is >>>>>>>>>> running with it: >>>>>>>>>> https://github.com/fullergalway/weewx-airmar-150wx-driver >>>>>>>>>> >>>>>>>>>> Thanks again, >>>>>>>>>> Rob. >>>>>>>>>> >>>>>>>>>> On Tuesday, April 28, 2015 at 11:20:47 AM UTC+1, Aleksandar >>>>>>>>>> Tsankov wrote: >>>>>>>>>>> >>>>>>>>>>> Hi, >>>>>>>>>>> I followed the mwall's advice and went back to original >>>>>>>>>>> wxservices.py. The logic for deciding which windSpeed and windDir >>>>>>>>>>> to be >>>>>>>>>>> used is putted in the driver. >>>>>>>>>>> Now everything works as supposed. >>>>>>>>>>> Since I want to have some real-time application running on >>>>>>>>>>> tablet, is it possible weewx to generate Weather Display's >>>>>>>>>>> clientraw.txt >>>>>>>>>>> file in order WDL (or something similar) to be used? >>>>>>>>>>> I'm attaching the new version of driver. >>>>>>>>>>> >>>>>>>>>> -- >>>>>>>>> You received this message because you are subscribed to a topic in >>>>>>>>> the Google Groups "weewx-development" group. >>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>> https://groups.google.com/d/topic/weewx-development/q6IHzkmyhBo/unsubscribe >>>>>>>>> . >>>>>>>>> To unsubscribe from this group and all its topics, send an email >>>>>>>>> to [email protected]. >>>>>>>>> To view this discussion on the web visit >>>>>>>>> https://groups.google.com/d/msgid/weewx-development/b9035cdf-fd4d-41b4-ab20-95c9535968ddo%40googlegroups.com >>>>>>>>> >>>>>>>>> <https://groups.google.com/d/msgid/weewx-development/b9035cdf-fd4d-41b4-ab20-95c9535968ddo%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>>> . >>>>>>>>> >>>>>>>> -- >>>>>>> You received this message because you are subscribed to a topic in >>>>>>> the Google Groups "weewx-development" group. >>>>>>> To unsubscribe from this topic, visit >>>>>>> https://groups.google.com/d/topic/weewx-development/q6IHzkmyhBo/unsubscribe >>>>>>> . >>>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>>> [email protected]. >>>>>>> To view this discussion on the web visit >>>>>>> https://groups.google.com/d/msgid/weewx-development/a35bd773-b6b8-4c2d-979d-22337bbcd127o%40googlegroups.com >>>>>>> >>>>>>> <https://groups.google.com/d/msgid/weewx-development/a35bd773-b6b8-4c2d-979d-22337bbcd127o%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>> . >>>>>>> >>>>>> -- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "weewx-development" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/weewx-development/q6IHzkmyhBo/unsubscribe >>>>> . >>>>> >>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/weewx-development/ff51ce20-4659-405e-90b6-b981e671f096o%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/weewx-development/ff51ce20-4659-405e-90b6-b981e671f096o%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- You received this message because you are subscribed to the Google Groups "weewx-development" group. 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