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  Missing BRG and COG on B&G Network Nav cockpit display
Posted by: first317 - 06-30-2016, 03:23 PM - Forum: How do I...? - Replies (2)

hello again,
I ve got a B&G Network Nav Display as GPS Display connected to a Rs422 serial2usb adapter on my Rpi.
In open plotter i added a Serial output to the B&G Display. SOG and DTW are on the display, but COG and BEaring to waypoint are missing.
The B&G shows only off.

  Features for "weather_log.csv"
Posted by: Alpenskipper - 06-28-2016, 11:53 AM - Forum: Feature Requests - No Replies


I automaticaly transfer the weather_log.csv file hourly to my dropbox to see what is going on on board when I am not there.

I did not suceed to format the first column,which seems to contain date and time, in an Excel readable format.
I would appreciate a more human readable sheet.

Three things would be cool:

1. Date and time in a format that needs no conversion.

2. only two digits for weather data

3. User definable interval and time spawn for recording

Best regards!


  Measurement and alarming for onboard voltage?
Posted by: Alpenskipper - 06-26-2016, 11:56 AM - Forum: How do I...? - Replies (4)


I would like to measure the voltage of the batteries and trigger an alarm message or shutdown Openplotter if the voltage is low.

This is especially important, when operating Openplotter unattended, because I do not trust the shore power. If the shore power fails, I want to be informed, for I have about four days until the batteries are drained and damaged by the Pi's current draw.

One idea is, to use a 220v relay, that closes a GPIO Pin, as long as there is shore power. When the shore power stops, the relay opens and an action is triggered.
But I would prefer a solution, where I don't have to touch the 220V installation.

How could the voltage be measured?



Information How to update to OpenCPN 4.4.0 development version on OpenPlotter v0.8.0
Posted by: Sailoog - 06-22-2016, 05:03 AM - Forum: How do I...? - No Replies

OpenPlotter will use the OpenCPN development version until OpenPlotter v1.0.0, then we will switch to OpenCPN stable version. In this way we can help the development of OpenCPN. The OpenCPN team has changed sources so you need to follow these steps to update.

Open a terminal an type:

sudo nano /etc/apt/sources.list

then you have to change:

deb http://ppa.launchpad.net/nohal/opencpn/ubuntu/ trusty main


deb http://ppa.launchpad.net/bdbcat/opencpn/ubuntu/ trusty main

Press Crl+X to save.

Now type:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7425C74D

Having the sources updated, just upgrade typing:

sudo apt-get update
sudo apt-get upgrade

Due to some updates, some items will change into the main menu. OpenCPN will be now under "Education" category. You have to edit your menu either with the "Main Menu Editor" or manually.

  Weather routing problem
Posted by: Contessa32 - 06-21-2016, 09:12 AM - Forum: Bug Reports - No Replies

I have OpenPlotter version 8 running on RP3. In order to launch the weather routing plugin I do the following:

1 Download a grib file with ZyGrib
2 Open the downloaded grib file from OpenCPN using the Grib plugin
3 Set the start and end points with the Weather Routing plugin in OpenCPN
4 In the configuration menu of Weather Routing I choose new, select the boat and then I press Compute.

The problem is that after computing the route, the weather routing module gives a message stating that the version of the grib file is not acceptable and OpenCPN crashes. This problem did not occur with version 7.

Any help is much appreciated.

  need to restart NMEA0183 Multiplexer to start GPS Position / Calibrating Compass
Posted by: first317 - 06-20-2016, 04:03 PM - Forum: How do I...? - Replies (6)

Hello, first, thank you for your great Work with creating the open plotter Distri.
I have build for my Boat a Chart Plotter with the following Hardware:
Raspberry Pi 3, U Blox 7 GPS USB Dongle, Waveshare 10.1" HDMI Touch, FTDI RS422 Interface, BMP180, MPU9150.
Works so far fine, but i have 2 Problems.
with a fresh bootet RPI i have to go to the openplotter programm on the Tab NMEA0183 and klick on the button restart. after that there are nmea sentences in the Inspector Window.

I have connected a MPU9150 unit on the I2C Bus, how can i calibrate this thing?

I hope somebody can help me.

  Issues with the Original Raspberry 7'' Touch Display
Posted by: Alpenskipper - 06-18-2016, 01:31 AM - Forum: How do I...? - Replies (2)


I use the original 7'' Touch display on my boat. Actually, I have several issues with the touch handling and backlight.

1. rightclick
I can't enable the touch rightclick. I tried it with the tutorial from the raspbery foundation https://www.raspberrypi.org/documentatio...hooting.md, pasted below.

2. zoom gestures
No zoom gestures possible

3. Backlight handling
I found a program in github to manage the backlight. Unfortunately it is not working. https://github.com/jakeh12/rpi-backlight

The funny thing is, that the touch things were working correctly in an earlier installation. Same with backlight on/off and two-finger zoom in opencpn.
And further more the screen resolution is not detected automatically any more. I have to force it in the config.txt.

Is it possible, that all this is a screen driver problem?
How to test and fix?

best regards,



You can emulate a right click with a setting change. Just:

sudo nano /etc/X11/xorg.conf
Paste in:

Section "InputClass"
Identifier "calibration"
Driver "evdev"
MatchProduct "FT5406 memory based driver"

Option "EmulateThirdButton" "1"
Option "EmulateThirdButtonTimeout" "750"
Option "EmulateThirdButtonMoveThreshold" "30"
Hit CTRL+X and y to save. Then:

sudo reboot
Once enabled, right click works by pressing and holding the touchscreen and will be activated after a short delay.

Posted by: seandepagnier - 06-15-2016, 10:17 PM - Forum: General discussion - Replies (8)

Anyone using arduino and openplotter?

I found this: http://www.aliexpress.com/item/Best-pric...64945.html

it seems reasonable to me.  Is there a better/cheaper way to get 1 pwm and 1 adc?

  GPS works in OpenCpn but not OpenPlotter NMEA 0183 Multiplexer
Posted by: nicolaasdekker - 06-15-2016, 05:43 AM - Forum: How do I...? - Replies (1)


I recieved my GPS dongle from Sailoog and spent a few min trying to get it working.

  • Created seriel connection in the OpenPlotter NMEA 0183 tab.
  • Checked the NMEA inspector to see if anything was popping up.
    - Got a whole bunch of information in the top window- After about 20min it updated the correct time but still nothing under Lat and Long information
  • Opencpn was listening to the network connection created by the multiplexer, but was not getting any info from the GPS.
  • After giving the GPS an hour I then created a serial connection in Opencpn to see if I could get it working that way, and it works fine, picks up the gps and plots my position in opencpn.
I dare say this is not the desired way to use the system as I would not be able to access the gps data through the network port created by the multiplexer.

Please advise,

N Dekker

  AP Issues
Posted by: robbiedeloose - 06-14-2016, 05:09 PM - Forum: Bug Reports - Replies (1)

Hi all,

I'm experiencing a new problem with the AP.

OP 0.8, Rasp 3, no openGL, internal wifi and dongle. The dongle does not support AP Mode.

I configure the internal wifi WLAN0 as an AP and share the internet connection of WLAN1. All works fine and continous to work fine, no craches.

From time to time if I power on the raspberry i don't get my AP. If i connect the rasp to hdmi display and check AP setting i see that the devices have change place. 

If I change AP to WLAN1 and share internet from WLAN0 it works again. It seems that the wifi numbering is not consistent.

Possibly rather a raspberry bug than a OP bug.

Does anybody else gets this kind of behaviour? Is there a way to stop them from changing numbers?

extra info

pi@openplotter:~ $ ifconfig
eth0      Link encap:Ethernet  HWaddr b8:27:eb:05:c3:b0  
         UP BROADCAST MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback  
         inet addr:  Mask:
         inet6 addr: ::1/128 Scope:Host
         UP LOOPBACK RUNNING  MTU:65536  Metric:1
         RX packets:6745 errors:0 dropped:0 overruns:0 frame:0
         TX packets:6745 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1
         RX bytes:410823 (401.1 KiB)  TX bytes:410823 (401.1 KiB)

wlan0     Link encap:Ethernet  HWaddr 00:e0:4d:05:52:cf  
         inet addr:  Bcast:  Mask:
         RX packets:4219 errors:0 dropped:3 overruns:0 frame:0
         TX packets:3238 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:1925335 (1.8 MiB)  TX bytes:602042 (587.9 KiB)

wlan1     Link encap:Ethernet  HWaddr b8:27:eb:50:96:e5  
         inet addr:  Bcast:  Mask:
         inet6 addr: fe80::1157:2b52:3687:395f/64 Scope:Link
         RX packets:5883 errors:0 dropped:1264 overruns:0 frame:0
         TX packets:4802 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:840903 (821.1 KiB)  TX bytes:2810988 (2.6 MiB)

pi@openplotter:~ $ lsusb
Bus 001 Device 007: ID 0403:fd49 Future Technology Devices International, Ltd ShipModul MiniPlex-4xUSB-AIS NMEA Multiplexer
Bus 001 Device 006: ID 148f:7601 Ralink Technology, Corp. 
Bus 001 Device 005: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 004: ID 046d:c52e Logitech, Inc. 
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Kind regards,