Garmin EchoMap Plus 43cv
Hello,
Im very new to the whole world of navionics and boating in gernal. I have a very small 14' aluminum boat with a very old 7.5 Johnson and i just bought this Garmin echomap plus for sonar fish finding and the navigation, so i can look at lake maps and figure out depths plan routes ect. I was very disappointed to learn after the fact that there is no way for me to do any kind of route planning away from the unit via an app or something of that nature.
So the big question why am i here? Ive been reading alot about signal K and im trying to understand what i can do with it using the serial lines that come out of the Garmin. I understand that its NMEA 0183 standard or it uses the Garmin proprietary protocol for sharing data between Garmin devices. Im imagining based on my reading that i can use a raspberry pi to capture the serial data on the GPIO pins and then parse that data using Signal K. Would i then be able to pull that data into some kind of android app for viewing all my routes and way points and things like that ? And or would i be able to create routes and send them back to the unit? Maybe its better if i just ask what kinds of things can i do with this kind of setup ? Looking for ideas
Thanks !
8 Replies
I don’t think it’s possible. Definitely not without knowing the proprietary stuff. There’s nothing in 0183 for that.
So what kind of things can I expect to capture from 0183?
I don’t know exactly what your hardware sends out, but: https://gpsd.gitlab.io/gpsd/NMEA.html#_nmea_standard_sentences
NMEA Revealed
A programmer's guide to NMEA0183, the GPS protocol reporting standard
Do you know if it's possible to capture from the serial bus on the gpio of a raspberry pi without the need for a hat of some kind?
I know the garmin has nmea 0183 on two wires that make up it's serial connection TX rx
It’s rs422, pretty sure you need an adapter. You can get them very cheap.
BTW, he echomap manual lists the sentences that it transmits
Can you link it here the only manual I got has about 5 sentences total for the whole kit thanks
Thanks