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Usage Instructions

ItemDescription and Parameters
Compatible System VersionsFly_FAST: Pre-installed with moon2uart, enable the service to use it
Fly_Armbian: Refer to the Raspberry Pi tutorial to manually install components
Supported ModelsFly-Pi V3, Fly-C5, Fly-C8P

Nova 3.5 communicates with the FLY host computer via the UART serial port. After wiring is completed, the moon2uart service needs to be enabled in the system configuration.

Wiring Instructions​

Power Off Operation

Before starting, fully power off the printer and disconnect the power supply. Do not plug or unplug cables, arrange interface wiring, or touch terminals while powered on.

When wiring, select the wiring diagram according to the corresponding host computer model. The serial cable needs to have TX and RX connected in crossover, and also ensure 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 comes with moon2uart pre-installed, simply follow the steps below to enable the service.
  • Fly_Armbian system requires first installing moon2uart by referring to the Raspberry Pi Usage Tutorial, then modifying the configuration according to the actual serial port name.

Modifying Fly_FAST Configuration Online​

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

  1. Open the device IP address in a browser, for example http://192.168.1.2/.
  2. Show hidden files according to 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 symbolic link to config.txt in the removable disk FlyOS-Conf. After modifying and saving through the web interface, 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 around the equals sign.

Screen Configuration​

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

Nova 3.5 uses moon2uart for communication and does not use the FLY Screen local display service. It is recommended to also confirm that klipper_screen and fly_screen remain disabled:

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

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