Greetings from a Canadian in Malaysia
, and thank you for this great Nav program. We came to OpenCPN
3 or 4 years ago, and were in a small minority of users. In the last couple of years though we notice that more and more people are using it, even those who used to be the most critical. It's not just open source, it's better! Thank you Dave, and all you others who made it happen.
Ok, to the point. GRadar. Thank you for creating this too, it's a huge labour and we truly appreciate your efforts. But we have some questions.
We have a GMR 18HD and a Garmin 2108 plotter, bought in Singapore
last year at an excellent price
. We don't need or use the plotter as such, and compared to our previous radar, a Vigil RX, the GMR 18HD is awful. In particular, the user interface is really bad, as is much of its other software
. So I am very excited about GRadar, which will be a great improvement. However we just can't get it up and running.
We're trying with Gradar v.10, dated 23-06-2012, on OpenCPN
3.2.2, with Win7 on 2 machines, and with Virtual Windows on a Mac. No joy. We've tried using Master mode with no plotter, and also in parallel mode with the existing plotter. We've checked and double checked the wiring
as indicated in the GRadar doc, no luck. The same wiring
will run the radar through the plotter, but not at the computer. We've tried the IP address as indicated, and several others that seemed intelligent alternatives. We've looked for clues in the Log, and we've run Wireshark frequently.
Here's what happens. When we start OpenCPN the Radar Log starts immediately. First it shows "Scanner State Unknown". If we're lucky it may then show "Warmup', followed later by "Standby", but never more than that.
There doesn't seem to be any pattern about this. It may or may not move on from "Scanner State Unknown", whether we turn on the radar before or after OpenCPN.
Wireshark usually shows a packet length of 66 bytes. Sometimes this increases to 606 bytes or more, which means that the network is alive. But OpenCPN never changes from having the red dot on the Radar button, and we get no user interface & no radar display. Even if we run the radar in parallel with the plotter, so that we know it's working properly, OpenCPN doesn't display anything except the Log. The GRadar toolbar button does nothing. GRadar starts the Log the moment we start OpenCPN, whether we want it or not, and we can't turn it off except by disabling it under Options-Plugins.
I attach a capture from Wireshark, filtered for IP. (Take off any .doc suffix if there and save as 'Any File' when downloading). However, I'm not sure that this will help. It feels like there is something very basic wrong with our setup, something that neither I nor my more capable friends can figure out. Maybe there is something really simple that we're overlooking.
Here are a few thoughts:
- Does the GPS
have to be connected? We haven't done that yet (we have some USB-serial issues).
- Should we preload the AIS
- Pin 5 on the F2F connector is an interesting question. Do you count from left or right? The diagram suggests from the left, while technical manuals
suggest counting from the right. One end is upside down with respect to the other to simplify the circuit board. Does this affect the count?
- Does that matter anyway, since no matter which side you start counting, both the pins show the same behaviour? Pin 5 from the left and pin 5 from the right both show 12 volts initially and then ground potential when either of them is grounded. We've tried every which-a-way and it makes no difference.
Does anyone have any clues? And of course, thanks in advance for even taking the time to read this post.
Ciao - Michael