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Usage Instructions

ItemDescription and Parameters
Compatible System VersionsFly_FAST: Pre-installed with moon2uart, enable the service to use
Fly_Armbian: Requires manual installation of components by referring to the Raspberry Pi tutorial
Supported ModelsFly-Pi V3, Fly-C5, Fly-C8P

Nova 3.5 communicates with the FLY host via UART serial port. After wiring, you need to enable the moon2uart service in the system configuration.

Wiring Instructions​

Power Off Operation

Before starting, completely turn off the printer and disconnect the power supply. Do not plug or unplug wiring harnesses, organize interface wiring sequences, or touch terminals while powered on.

When wiring, choose the wiring diagram according to the corresponding host model. Ensure that the TX and RX of the serial cable are cross-connected, and confirm that 5V and GND are not reversed.

Fly-Pi V3 Wiring​

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Enabling the Nova 3.5 Screen Service​

System Differences
  • Fly_FAST system has moon2uart pre-installed, just follow the steps below to enable the service.
  • Fly_Armbian system needs to first install moon2uart by referring to the Raspberry Pi Usage Tutorial, then modify the configuration according to the actual serial port name.

Online Configuration Modification for Fly_FAST​

Fly_FAST supports modifying configuration files online via a browser; this method is recommended for enabling the Nova 3.5 serial screen service.

  1. Open the device IP address in a browser, e.g., http://192.168.1.2/.
  2. Show hidden files based on the web interface being used.

fluidd interface: Uncheck Filter hidden files and folders

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mainsail interface: Check Show hidden files

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  1. Enter the .flyos-config folder and open the sys-config.conf file.
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sys-config.conf is a symlink to config.txt in the removable disk FlyOS-Conf. After modifying and saving via the web page, restart the system for the changes to take effect.

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Configuration Format

Configuration items must maintain the key=value format. Do not change it to key: value, and do not add spaces before or after the equals sign.

Screen Configuration​

In sys-config.conf, find moon2uart and change the following 0 to 1.

Nova 3.5 uses moon2uart for communication and does not use the FLY Screen native screen service. It is recommended to also ensure klipper_screen and fly_screen remain disabled:

moon2uart=1
klipper_screen=0
fly_screen=0
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After modification, save the file and restart the system for the configuration to take effect.

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