Accessories

optional components
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motor controller data extension
This extension cable is for serial data connection of the autopilot allowing the autopilot computer and controller to be mounted further apart. It includes the waterproof 4 pin connectors on each end compatible with autopilot computers and motor controllers on this store.

Depending on the configuration, it may be desirable to mount the motor controller further from the autopilot computer. I do not use an extension on my boat so please consider if it is actually needed/useful for you. For example, if there is already power near the drive motor it can make sense, especially if using rudder feedback as these runs would also e much shorter.

$10.00
isolated USB to NMEA RS422 Adaptor
Compatible with marine equipment NMEA
  • ADM2484 provides galvanic isolation, short circuit protection, and electrostatic discharge circuitry
  • bi-directional isolated serial data transfer- baud rate 300 to 1,000,000- mini usb connector
  • works with RS422 and RS232.
  • ch341 usb serial converter supports linux/windows/mac
  • 1500 volt isolation prevents ground loops and equipment damage
  • protected from transients from TVS diode
  • low current consumption
  • tested with standard horizon GX2100 receiving AIS messages into OpenCPN

rs422 connections A and B are inputs, Y and Z are outputs
rs232 use A NMEA common, B NMEA IN (+), Y NMEA common, Z NMEA OUT(+)

leds indicate data is being sent and or received. If led stays lit without data, there is a wiring problem. Ensure both A and B for receiving and/or Z and Y for transmitting are secured. From a serial console ensure baud is correct. NMEA uses 4800 8N1, or 38400 8N1 for high speed such as AIS. If data is received but garbage, try reversing A/B or Y/Z.  Recognized on linux as /dev/ttyUSB* Other OS may require drivers

schematic
3d printed enclosure
$20.00
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