Elektronisch schema

 

                                          [RF keyboard]                         + -------> Yakker wifi http://192.168.5.1 UDP 2000
                                              | [O-Charts key]                  |
                                              |  |  + -------[422]---(nmea)---[AIS]<---(nmea)----[DSC van marifoon]
                                              |  |  |  + -------[422]---(nmea)--->[AutoPilot] 
      + ---(touch)------------------------- + |  |  |  |
      |                                     | |  |  v  |   
[Monitor] --(hdmi)--- [RPi] ---(usb3)----- [  7 x USB hub ] <------ [GPS]  
      ^                  ^                             ^
      |                  |                             |
 (usb)                 (usb)                         (usb)
      |                  |                             |
      |                  |             + ------------- +     
      |                  |             |
      + ---------------- [4 x Power USB]
                                ^
                                 |
                              (12V)
                                 |
                              

AIS RS485 <---> USB: https://www.waveshare.com/wiki/USB_TO_RS485