Wind Speed and Direction Sensor

[ViniciusP]

Hi Comunity!

Im newby in OPEN CPN, so the question is probably dumb, but I could not finda a solution.

Can anyone suggest a CHEAP Wind Speed and Direction sensor that can be used to run in OPEN CPN, with raspberry pi or even better directly on my Android Tablet?

As Marine branded ones are super expensive, I am looking of corse for thouse cheap chinese ones, but seams all of them have RS-485 Modbus protocole, not NMEA 0183.

Like this ones:

https://pt.aliexpress.com/item/10050...Cquery_from%3A


Thanks for your help!

[nohal]

You would need to convert modbus to NMEA0183 yourself. There are libraries for Arduino and other MCUs for both, so it is not complicated to do.
Some multiplexers, for example Shipmodul MiniPlex implement the conversion as well, but they probably don't meet your definition of being cheap.

[ViniciusP]

Hi Nohal, Thanks for your reply,

A miniplex3 - 350Euro is not cheap.
I like very mutch your idea of arduino, if you know could suggest a library, Im also have zero knoledge in arduino as well.

Thanks

[nohal]

https://duckduckgo.com/?q=arduino+modbus+wind+sensor
https://duckduckgo.com/?q=arduino+nmea0183

You probably should first get used to use internet search engines yourself to realize this project....

[wholybee]

Originally Posted by ViniciusP

Hi Comunity!

Im newby in OPEN CPN, so the question is probably dumb, but I could not finda a solution.

Can anyone suggest a CHEAP Wind Speed and Direction sensor that can be used to run in OPEN CPN, with raspberry pi or even better directly on my Android Tablet?

As Marine branded ones are super expensive, I am looking of corse for thouse cheap chinese ones, but seams all of them have RS-485 Modbus protocole, not NMEA 0183.

Like this ones:

https://pt.aliexpress.com/item/10050...Cquery_from%3A


Thanks for your help!

Take a careful look at what you are planning to buy, before you buy it. I checked the link above to see what the resolution of the wind direction sensor was, and it is "8 directions" Completely useless on a boat. You will probably find that most of the cheap stuff will be like that.

If you want to work with an Arduino and haven't before, I suggest starting with one of the learning kits on Amazon, that includes a breadboard, a bunch of electrical components, and sample projects teaching programming.
https://www.amazon.com/ELEGOO-Projec...ZF4/ref=sr_1_3

If you already have some basic electronics knowledge and a basic understanding of C programming, you could skip that, but otherwise I think you would be lost without it.

There is an opensource wind sensor you can build, but would probably cost as much as a commercial one, and would require a 3d printer and some electronics skills.
https://open-boat-projects.org/en/zu...sensor-yachta/

I have no personal experience with it, but NASA Marine (no relation to NASA) possibly makes the cheapest NMEA0183 sensor, and some do use it.
https://www.nasamarine.com/product/t...out-20m-cable/

[barcoMeCasa]

you can make one

https://open-boat-projects.org/en/diy-windsensor/

[nohal]

Hard to say what the chinese sensors actually are, some of them might actually be the same as https://wiki.dfrobot.com/RS485_Wind_...er_SKU_SEN0483 and https://wiki.dfrobot.com/SKU_SEN0482...Transmitter_V2

[Hakan]

I've used the NASA wireless gadget for a couple of years now. Still works.

[hpeer]

NASA marine is working just fine.

I have it run to a YDNR wireless router which does SeaTalk, 0183 AND 2000. SO I get the display on my RM ST60+ gouges and on my iPhone and Android apps.

[ian5142]

For a shore based solution I wrote a Java program that reads the info using Modbus. It then updates a MariaDB database run locally. Which is accessed by a webpage to view the data. This all runs on a Raspberry Pi 4B, 1GB version.



If anyone wants the code, just let me know I can put it on Github.


I used the JSSC library to communicate with the cheap Chinese wind speed and direction sensors.



As for Arduino libraries, there are several. I have yet to use any NMEA 0183 or Modbus ones in my projects yet. I have heading / water temp sensor but I wrote the serial output sentences myself, no library.


NMEA 0183 is described in detail here: https://gpsd.gitlab.io/gpsd/NMEA.html

[Corsair63]

Originally Posted by Hakan

I've used the NASA wireless gadget for a couple of years now. Still works.

I have NASA wired from two years ago and it's working but seems to have a problem with the NMEA string, the thing is that my previous multiplexer NDC-5 actisense didn't recognise the input.
exchanged to Miniplex and happened the same, after contacting with miniplex service we did a test and we got working, the problem was that didn't transmit properly the end of sentence and there is one option in miniplex that you can correct it, now working fine.