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Latest Threads
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  How to build own depth chart?
Posted by: svMira - 03-27-2019, 11:17 AM - Forum: How do I...? - Replies (3)

Is there a way that I can use OpenPlotter to create my own depth chart?

I have a number of uncharted/poorly charted areas as well as shifting sandbars that I would like to chart the depth of so I can find the best route through. Is there a way I can build a depth map with this software, something like many of the fishfinders have now? (Navionics contours, Garmin QuickDraw, etc...)

The other thing I'd really like to do, is be able to put some kind of portable unit on a dinghy and build a depth chart off that, as I really want to go over the area first with my dinghy to find the deep spots instead of grounding my sailboat over and over again. <grin>


Shocked Warning !!! Counterfeit usb gps modules on ebay !!!
Posted by: Didier B - 03-26-2019, 05:20 PM - Forum: General discussion - Replies (6)

Hi folks !
Since a few weeks, ebay is invaded by counterfeit USB GPS modules : after an autopsy of the 1st DOA item, it looks like an antenna, with its coax cable, to which is attached ... an USB connector !

This design, due to a brainless monkey, will not make you loose your money (Paypal refunds within a week), but your time : you will have lost 4 to 6 weeks in your project development, if you needed a gps !!!

I received twice the same bullshit, though after the 1st experience I had ordered a different type, but I finaly received, as a 'replacement', the dummy gps unit(s) !
BTW, ebay doesn't accept the word "bullshit" but the expression 'Cow excrement' doesn't trigger the politeness bot !

Now I shop on Aliexpress, without any illusion ...

  SignalK account
Posted by: Didier B - 03-26-2019, 06:02 AM - Forum: How do I...? - Replies (6)

OP keeps on asking to change SignalK password.
I launch SK webApp, and try do access, I couldn't, so I tried to create an account. (Sign Up)
Then I am requested an email (BTW why ?), I give one valid email, a password, I confirm the password, click Create an account, but it freezes and nothing happens...
I am only trying to set a password for SK, all this seems to be over sophisticated ! Dodgy

  Using RPI3B+ as AP for WEBBOAT 4G LITE
Posted by: LaMare - 03-25-2019, 05:53 PM - Forum: How do I...? - Replies (1)

Hi, I bought an WEBBOAT 4G LITE last friday and put it up on a pole on the stern. It turned out not to be the easiest thing to get it running as I want to. Apart from making the right configuration I discovered that I might need an AP in the cabin to have access to internet for my different units. The WEBBOAT 4G LITEdoes not manage the angle and distance down in the cabine. Distance is 5m and 3.5m below the dome.
A solution could be to by an access ponint  from Glomex and install it with a cable from the Can on the pole but then I came to think about my RPI allready installed and running.

  • Shall I use an RPI instead and is it wise to use the one I have as plotter?
  • How does it have to be configured and how many devices can access it during the same time?
  • Will using it as an AP slow it down as a plotter?
As I said I have an RPI 3B+ it is put together with the standar 7'' screen and a computer fan attached to it
OP 1.2 installed.
Running OpenCPN 5.0
Connected to Nexus NX2 for wind/logg/temp and depth, NMea 0183
Recieving AIS and GPS info thru USB connections
Sending steering information to Raymarine EV-200
All above in the same RPI and only using OpenCPN interface for the data stream
WiFi setting today is only Client
All is served with electricity from a 5V 3A USB source.
Last question, would it be wiser to put a second RPI as AP for WiFi and maybe use it for planning on the TV


  Problem with the forum : attachment issue - SOLVED
Posted by: Didier B - 03-23-2019, 07:53 AM - Forum: General discussion - Replies (7)

I'm trying to attach a picture to a thread.
i get the following message, don't know why !

"The file upload failed. Please choose a valid file and try again. Error details: There was a problem moving the uploaded file to its destination."

I tried with a jpg (28 kb) and a png version (90 kb) both totally valid !

Exclamation OpenPlotter v2.x.x is coming!!
Posted by: Sailoog - 03-22-2019, 02:55 PM - Forum: General discussion - Replies (24)

First of all sorry for the delay posting this thread, some things should be decided and tested before.

We are glad to announce that OpenPlotter v1.x.x reached more than 10,000 direct downloads in one year. Torrent downloads are not included on this amount. We have learned a lot from your feedback and now we have an idea about what you need, what you do not, what you do not like or what you do not understand. Some apps like Signal K node server, pypilot, OpenCPN... have evolved a lot so we will try to apply all these improvements and everything we have learned on v2.x.x.

To know if we have achieved some of our goals we should remember them:

  1. One million euros
  2. Be an alternative to expensive and proprietary devices in our boats
  3. Use only free technologies and collaborative projects
  4. Save advanced users time by installing and configuring all the necessary tools
  5. Help beginner users to become advanced users introducing them in the use of free technologies
Still thinking how the hell we are getting 1 so let's focus on the rest.
We are sure that we are close to seeing the first open boat equipped with just free technology and environment/social friendly devices.
Some advanced users use OpenPlotter as base system to develop their own installations to fit their personal requirements. We will make a big step on this direction publishing a superscript to create OpenPlotter images and NOOBS files from scratch using any Debian based computer like Ubuntu. This way advanced users will be able to add/remove packages or settings creating custom OpenPlotter flavors.
We feel that somehow we have failed getting 5. Our weak point is the documentation so we need to fix this. Our time and human resources are limited and we had to choose between developing or documenting and what was developed made obsolete the little documented. Our plan to solve this is maintaining only the English version and let people make their specific tutorials in their languages or let localized forums do this work. This way is how projects like OpenCPN work. We will write just a technical reference. English is not our first language so I am afraid it will be plenty of mistakes, helps us with this please. We would like to say thanks to advanced users who help others on this forum, thanks to them the lack of documentation has not been so critical.

What is new?
  • Superscript to create OpenPlotter from scratch.
  • Lighter image and NOOBS files.
  • OpenCPN 5:
  • Xygrib:
  • New and complete online/offline documentation in All future versions will be on the same repository. Links to offline docs on every feature.
  • Telegram support. Create your own telegram bot easily. Trigger remote actions from Telegram bots and send messages to Telegram bots and groups from OP.
  • Take and send pictures by twitter or telegram with a webcam.
  • Grafana+InfluxDB support to manage logs and create dashboards.
  • Winlink support? it depends on free space on the final image to add the required packages.
  • New languages
What changes?
  • We will maintain only the English version of docs
  • GPIO management integrated into Actions.
  • MQTT management integrated into Actions.
  • Actions feature is based on Node-Red. There is an OpenPlotter interface to manage actions for Node-Red newbies.
  • Now we use Node-Red embedded into Signal K node server.
  • SMS support is removed.
  • AIS-SDR using both channels simultaneously.
  • Improved CAN management. MCP2515 support.
  • Incremental and improved update procedure to avoid long and heavy downloads.
  • Improved network management
  • Improved pypilot integration
  • Now kplex is optional. You can use it to set filters to your NMEA 0183 inputs/outputs.
  • Improved serial device management. Diferent options are now more explicit and guided.
  • NMEA 0183 generator is replaced by "Signal K to NMEA 0183" Signal K plugin
  • Deviation table is removed.
  • Calculation is replaced by "Derivated data" Signal K plugin
  • New "accounts" management, now is "credentials".
  • Improved Moitessier HAT management and installation.

We are waiting for OpenCPN to be released and then we will let the dust settle because some plugins will still need work. We will release OpenPlotter v2.x.x in 3 stages:

- We will publish a beta in openmarine for betatesters and translators.
- We will work on documentation while people is testing and translating.
- We will publish a release candidate with fixed issues and translations before the final release.

Will you have to burn an SD again?

Yes. Every OP major release needs to be installed from scratch in an SD. This is a problem for all of you who have bought charts from o-charts because you are forced to consume one of your 2 allowed systems for every chart. Remember that every time you reinstall OP you consume 1 o-charts license.

As some of you already know I work as o-charts employed too (until we get the million euros of course). O-charts and OpenCPN team we are working on a USB key dongle solution. You will be able to assign one of your 2 allowed licenses to this really small device and you will be able to run your charts on any computer where the dongle is plugged in. It is not an storage device where you save your charts but an special piece of hardware to decrypt your charts installed as usual on any machine. Reserve one of your 2 shots for the dongle.

And that is all, do you have any suggestion/request?

  Low Cost Smart Display From a Large Screen In-Dash Radio?
Posted by: abarrow - 03-22-2019, 10:56 AM - Forum: General discussion - Replies (1)

Has anyone thought about using one of these as an outside display?

Since it runs Android 8.1 , I would think (hope) the Android version of OpenCPN could be run on it. It's waterproof and has a touch screen.

  Getting started - pypilot on 1980 Gulfstar MY
Posted by: tobyyost - 03-20-2019, 08:51 PM - Forum: General discussion - Replies (2)

Within a week or two I will be finishing up the first part of my openplotter installation. I then want to move on to pypilot.  Forgive me as I am a newb to openplotter and raspberry pi.  My boat has an old autopilot that doesn’t work very well so last year I disconnected that and installed a garage door type of remote from amazon that allowed me to remotely steer my boat by simply supplying 12 v to one side or the other of the hydraulic pump. This was the best damn 15 dollar upgrade I ever made!  So to get started with pypilot I understand I need an mpu-9255?  Correct?   Then what exactly do I need to drive the motor?  Can someone give me some recommendations? Do I need any other hardware?  That is all for now. Just want to get everything on order.  Thanks

  Canusb data not making it to opencpn 3b+ 1.2
Posted by: Sderbyshire - 03-20-2019, 01:40 PM - Forum: How do I...? - Replies (4)


I’m testing out the new 3b+ build on board this weekend.

Successfully getting nmea2000 data in signalk, can see ais targets on the example map app.

But the data isnt getting to opencpn, no position or ais data.

How do i connect opencpn to signalk ?


  Adding WiFI adapter for shore connection
Posted by: MilesAhead - 03-20-2019, 11:49 AM - Forum: How do I...? - Replies (2)

First things first, I'm a newbie and not as tech-savvy as others on this forum, so please excuse "dumb" questions.

  • RPI: 3B+
  • OP: 1.2.x
  • WiFi: TP-LINK USB dongle plugged into a powered USB hub
I want to use the RPi as an AP for other equipment, particularly running OpenCPN on another RPi.

I also want to access the internet from shore providers, not just through my Android phone. Which is why I'm trying to set this all up in my home. Everything appears to be working, except I cannot browse the internet. I keep on getting the message "This site cannot be reached" when I try to browse to sites such as Google, CNN, BBC, ...

I have read the manual and I have tried to setup OP as per the manual.

Network settings tab in OP:
  • Network mode: RPi3+: AP + client
  • Sharing Internet Device: wlan0
  • Addresses:
    Multiplexed NMEA 0183:    192.86.xx.xx: 10110Signal K Server    192.86.xx.xx:3000VNC remote desktop    192.168.xx.xx:5900     
Obviously I'm hiding my actual IP address, but it is a valid address.

When I hover over the WiFI symbol on the top right of the screen I get the messages:
  • wlan1: Associated with openplotter
  • wlan1:
  • wlan0: Associated with "my home network"
  • wlan0: 192.168.xx.xx/24
  • eth0: Link is down
So I'm guessing there is something i'm not setting correctly in RPi itself?

Any and all help very much appreciated.