Screen Wiring and Configuration

Screen Wiring

Power Off Before Proceeding

Before starting, completely shut down the printer and disconnect the power supply. Do not connect or disconnect wiring harnesses, organize interface cable routing, or touch terminals while the power is on.

When connecting a TFT or HDMI screen, carefully confirm the orientation of the FPC cable; when connecting a serial screen, ensure that the 5V, GND, TX, and RX connections are correct.

Wiring the TFT-V2 screen
HDMI cable connection
Wiring the serial screen
Nova 3.5 wiring

TFT-V2 Screen Wiring

Tip

TFT Screen Connection and Configuration Notes

Wire Selection:The FLY-Pi V3 must use a reverse FPC cable with the specification FPC 软排线-16P-反向-0.5mm-400mm.
Touch Mode Toggle:Set the DIP switch on the back correctly according to the screen type:
When using Resistive touchscreen, set it to the Resi position.
When using Capacitive touchscreen, set it to the Cap position.
Incorrect settings will cause the touch function to fail.

FLY-Pi V3 TFT screen wiring diagram

HDMI Wiring

HDMI FPC Cable Specifications

When using the FPC-HDMI interface to connect a FLY HDMI screen, please use the following specifications:

FPC specification: FPC flexible flat cable - 25P - reverse - 0.5mm - 1 meter

Standard HDMI interface connections do not require this FPC cable.

FLY-HDMI-LCD5 Screen Wiring Method

Wiring Method 1

Wiring Method 2

Serial Screen Wiring

The UART terminal on the FLY-Pi V3 is XH2.54-4P, with signals 5V, GND, TX, and RX; when connecting a serial screen, connect TX and RX in a crossover configuration.

Using this feature requires flashing the serial firmware
Seven-inch screen serial firmware download
Five-inch screen serial firmware download

Nova 3.5 Wiring

The Nova 3.5 communicates with the Fly-Pi V3 via UART. The UART terminal on the Fly-Pi V3 is XH2.54-4P; when wiring, ensure that TX and RX are connected in a crossover configuration, and avoid reversing 5V and GND.

Screen Configuration

FLYOS-FAST System Screen Configuration

Access the device's IP address via a browser, for example: http://192.168.6.110/

fluidd interface operation: uncheck "Filter hidden files and folders"

mainsail interface operation: check "Show hidden files"

Enter the displayed .flyos-config folder and find the sys-config.conf configuration file

Edit the sys-config.conf file and select the corresponding configuration method based on the screen type:

TFT resistive touchscreen configuration
TFT capacitive touchscreen configuration
HDMI screen configuration
Serial screen configuration

Modify the value after screen= to fly-tft-v2-r
To use FLY Screen, klipper_screen=0 needs to be set; if klipper_screen=1 and fly_screen=1 are both enabled, KlipperScreen will be activated by default
Modify fly_screen=0 to fly_screen=1
Below is a reference after modification

screen=fly-tft-v2-r

Additionally, modify

klipper_screen=0
fly_screen=1

Modify the value after screen= to fly-tft-v2-c
To use FLY Screen, klipper_screen=0 needs to be set; if klipper_screen=1 and fly_screen=1 are both enabled, KlipperScreen will be activated by default
Modify fly_screen=0 to fly_screen=1
Below is a reference after modification

screen=fly-tft-v2-c

Additionally, modify

klipper_screen=0
fly_screen=1

Modify the value after screen= to hdmi
To use FLY Screen, klipper_screen=0 needs to be set; if klipper_screen=1 and fly_screen=1 are both enabled, KlipperScreen will be activated by default
Modify fly_screen=0 to fly_screen=1
Below is a reference after modification

screen=hdmi

Additionally, modify

klipper_screen=0
fly_screen=1

The serial screen uses moon2uart communication; change 0 after moon2uart to 1
The Nova 3.5 and WiScreen serial modes do not use the FLY Screen local display service; ensure klipper_screen=0 and fly_screen=0 remain disabled
Below is a reference after modification

moon2uart=1
klipper_screen=0
fly_screen=0

Important Note

After modifying the configuration, save the file and restart the system for the changes to take effect.

Screen Wiring​

TFT-V2 Screen Wiring​

HDMI Wiring​

Serial Screen Wiring​

Nova 3.5 Wiring​

Screen Configuration​

FLYOS-FAST System Screen Configuration​