Quick Start

This document describes how to install and use the NEX-FD, including its technical specifications.

System Layout

The following image shows the standard NEX-FD system layout for operation:

First Steps

NEX-FD is connected between the CAN-FD bus of the system and the device to be controlled. The primary pads are wired to the CAN-FD bus, while the secondary pads are wired to the device through the interface required by the device: RS232, RS485, I2C, GPIO, PWM or ADC. The function of each pad is explained in the Pinout section.

Warnings

Warning

Do not power the board with a voltage other than the 5 V provided. The microcontroller, the CAN-FD transceiver and the RS232/RS485 driver operate directly at 5 V.
Check the polarity of the supply and of the CAN-FD lines before powering the system. Reversing the 5 V and GND pads may damage the board.
The same output pads are shared by the I2C bus, the GPIO and the PWM outputs. Configure the board according to the connected device before powering it.
Perform all the soldering and harness operations with the system unpowered.

Requirements

Any device providing a CAN-FD or CAN 2.0 bus and the 5 V supply, such as an autopilot.
A device with RS232, RS485, I2C, GPIO, PWM or analog interface to be connected to the secondary pads.
A PC with the configuration software installed.