Hi,
I'm wondering about ways to utilize legacy systems in a new network.
I have a B&G Hydra 330 system with fully analog instruments. I appreciate these old analog instruments, yet need to upgrade to networked instruments, to utilize a NSS8 plotter. In particular, I'd love to find a way to convert the pulse train from a Sonic Speed ultrasonic sensor to a Nmea 2000 PGN.
Has anyone backward engineered the binary code for the speed through water PGN? How hard would it be to program something like an Arduino UNO to translate pulses per minute to the required code?
Many thanks,
Steve
Maybe what your looking for is this:
http://www.raymarine.com/view/?id=3338
It can take the pulse train of the airmar paddlewheel and turn it into NMEA-2000. Maybe it can do the same for your B&G ??
Could be worth your time comparing the specifications of the two product lines.
Thanks, Dan
That saves me from re- inventing the wheel. Will the SeaTalk ng sentences be compatible with a Simrad NSS8, or an IS40?
Steve
SeaTalkng STW and many other PGNs are standard N2K and will work with an NSS8, plus the NSS8 can apply calibrations...but I'm not at all sure that the Raymarine converter will work for your application. Not sure who can tell you either. Sorry.
Implementing a NMEA 2000 sending device, including address arbitration, is something that nobody in the open source space has done yet. The PGNs are least of your worry (but they are known.)
Steve, I asked Ben and Kees to help me respond (Thanks guys). I would have guessed at least one additional Raymarine display is needed to program the calibration.
Bottom line, is what Ben wrote.
Obviously it will be easier modifing the output of your STW sensor (if that is necessary) with some simple electronics then being the first to address arbitration in the N2K open source community. If you go ahead, take a few pictures would you, write it up, and be a guest writer here on Panbo. Thanks!