Screen Wiring and Configuration

Screen Wiring

Power Off Operation

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

When connecting TFT or HDMI screens, carefully confirm the direction of the FPC ribbon cable; when connecting serial screens, ensure the 5V, GND, TX, and RX wiring is correct.

TFT-V2 Screen Wiring
HDMI Wiring
Serial Screen Wiring
Nova 3.5 Wiring

TFT-V2 Screen Wiring

Tip

TFT Screen Connection and Configuration Notes

Ribbon Cable Selection: The package includes two FPC ribbon cables: 14P (narrow ribbon cable) and 16P (wide ribbon cable). The FLY-Pi V3 must use the 16P wide ribbon cable.
Touch Mode Switch: Correctly set the DIP switch on the back according to the screen type:
When using a Resistive Touch Screen, switch to the Resi position.
When using a Capacitive Touch Screen, switch to the Cap position.
Incorrect settings will cause the touch function to fail.

FLY-Pi V3 TFT Screen Wiring Diagram

HDMI Wiring

FLY-HDMI-LCD5 Screen Wiring Method

Wiring Method 1

Wiring Method 2

Nova 3.5 Wiring

Nova 3.5 communicates with Fly-Pi V3 via UART. When wiring, ensure TX and RX are connected crosswise, and avoid reversing 5V and GND.

Screen Configuration

FLYOS-FAST System Screen Configuration

Access the device IP address via a browser, e.g., 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 choose the corresponding configuration method based on the screen type:

TFT Resistive Screen Configuration
TFT Capacitive Screen Configuration
HDMI Screen Configuration
Serial Screen Configuration

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

screen=fly-tft-v2-r

Also modify

klipper_screen=0
fly_screen=1

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

screen=fly-tft-v2-c

Also modify

klipper_screen=0
fly_screen=1

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

screen=hdmi

Also modify

klipper_screen=0
fly_screen=1

Serial screens use moon2uart communication. Change 0 after moon2uart to 1
Nova 3.5 and WiScreen serial mode do not use the FLY Screen local screen service. Ensure klipper_screen=0 and fly_screen=0 remain off
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 configuration 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​