2021-10-21, 01:23 AM
(This post was last modified: 2021-10-21, 01:24 AM by Island_Moose.)
SUCCESS!!!
The reason my B&G instruments were sending corrupt data sentences to OpenCPN/Signal K was because of an imbalance in my voltage drop. If you see how I had the units wired above, the Tx+ and Rx+ were travelling about 10cm. The Tx- and Rx- were grounded to the boats negative ground, which was about 3 meters away.
I was advised by Steve at Yakbitz to look for a ground closer to the source, and I found the screen inside the Universal Interface itself. This is grounded inside the UI and matched the length of travel to the Data + lines.
With this new wiring configuration the dissimilar voltage drop disappeared and I instantly got good data from all of my instruments!
$IIHDG,,,,,*67
$IIHDM,,M*0C
$IIHDT,,T*0C
$IIMTW,,C*0D
$IIMWD,,T,,M,,N,,M*44
$IIMWV,,T,,N,A*3B
$IIRMB,V,,,,,,,,,,,,,N*45
$IIRMC,,V,,,,,,,,,,N*44
$IIVHW,349,T,349,M,,N,,K*55
$IIVLW,,N,,N*4D
$IIVTG,,T,,M,,N,,K,N*3B
$IIDPT,3.59,,*7D
$IIGGA,,,,,,,,,,M,,M,,*41
I am now on to creating dashboards and will soon create a link back to my autopilot! Victory!!!
The reason my B&G instruments were sending corrupt data sentences to OpenCPN/Signal K was because of an imbalance in my voltage drop. If you see how I had the units wired above, the Tx+ and Rx+ were travelling about 10cm. The Tx- and Rx- were grounded to the boats negative ground, which was about 3 meters away.
I was advised by Steve at Yakbitz to look for a ground closer to the source, and I found the screen inside the Universal Interface itself. This is grounded inside the UI and matched the length of travel to the Data + lines.
With this new wiring configuration the dissimilar voltage drop disappeared and I instantly got good data from all of my instruments!
$IIHDG,,,,,*67
$IIHDM,,M*0C
$IIHDT,,T*0C
$IIMTW,,C*0D
$IIMWD,,T,,M,,N,,M*44
$IIMWV,,T,,N,A*3B
$IIRMB,V,,,,,,,,,,,,,N*45
$IIRMC,,V,,,,,,,,,,N*44
$IIVHW,349,T,349,M,,N,,K*55
$IIVLW,,N,,N*4D
$IIVTG,,T,,M,,N,,K,N*3B
$IIDPT,3.59,,*7D
$IIGGA,,,,,,,,,,M,,M,,*41
I am now on to creating dashboards and will soon create a link back to my autopilot! Victory!!!