FAST System Configuration Modification

Important Notes

Must Read

• Settings in the configuration file will only take effect the first time the system starts after flashing.
• As the configuration process is relatively complicated, it is highly recommended to connect to the machine via network and then configure it via a browser.
• This tutorial only provides modifiable options.

Note

• Please use either mainsail or fluidd web interfaces for configuration modifications.
• Please do not enable browser translation, as it may prevent the system from starting properly after saving.
• It is best not to enter Chinese or special characters in the configuration file.
• Configuration changes will take effect only after restarting the system.

dangerous

• Do not modify anything below ######### PLEASE DO NOT EDIT THE FOLLOWING ######### in the configuration file.

How to Modify the Configuration File

Modifying the Configuration File After Flashing

• Configuration items that only take effect on the first startup must be modified by using a professional text editor to open the configuration file config.txt on the removable disk named FlyOS-Conf after flashing.

Online Configuration Modification After System Startup

• If it is a general configuration item, changes made on the system's web configuration page will take effect after restarting the system.

  • Open the device IP address in a browser, for example: 192.168.1.2/.
  • In fluidd, uncheck as shown on the left -> Filter out hidden files and folders.
  • In mainsail, check as shown on the right -> Show hidden files.
  • At this point, you can see the .flyos-config folder. Enter this folder and you will find the sys-config.conf file.
  • The sys-config.conf file is a symbolic link to the config.txt file on the removable disk FlyOS-Conf.
  
  • Open the sys-config.conf file, modify the desired configuration items, then save -> close, and restart the system.
  
  • Note: The format of configuration items in the sys-config.conf file should be key=value. Do not change it to key: value.
  • After modifications are saved, restart the system for changes to take effect.

Configuration Items

Wireless Network Configuration

• The following configuration items take effect every time the system starts.

Configuration Item	Default Value	Available Values	Description
WIFI_SSID	empty	Any WIFI name	WIFI name. If filled, the system will automatically connect to this WIFI on startup
WIFI_PASS	empty	Leave empty if no password	WIFI password. If filled, it will be used to connect to the WIFI

---

Printer Default Configuration

tip

• The following configuration items take effect only on the first startup.

Configuration Item	Default Value	Available Values	Description
language	zh-CN	Click to expand details zh-CN, zh-HK, en, de, cz, es, hu, ja, nl, pt, se, uk, da, fr, it, ko, pl, ru, tr	Set default language for fluidd and mainsail on first startup
printer_name	empty	Any string	Set default printer name for fluidd and mainsail on first startup

---

System Configuration

• The following configuration items take effect every time the system starts.
• Below are the modifiable options.

Configuration Item	Default Value	Available Values	Description
board	none	fly-pi-v2	Motherboard model. Please do not modify values outside the available options
localtime	Asia/Shanghai	World Timezone Table	Set system default timezone. The system will automatically synchronize time after connecting to the internet
canbus_bitrate	1000000	1000000 500000 250000	Set default bitrate for all CAN devices in the FAST system. Can only be modified here, default is 1M

---

Screen Display Configuration

• The following configuration items take effect every time the system starts.

Configuration Item	Default Value	Available Values	Description
screen	hdmi	none,hdmi fly-tft-v1 fly-tft-v2-rfly-tft-v2-c	Set screen. none disables all displays
rotate	90	0, 90, 180, 270	Set rotation angle for FLY-TFT. Not applicable for HDMI
klipper_screen	0	0, 1	Set whether to enable KlipperScreen 1: Enable 0: Disable Effective when printer=klipper
moon2uart	0	0, 1	Set whether to enable moon2uart 1: Enable 0: Disable Effective when printer=klipper

---

Klipper Related Configuration

• The following configuration items take effect every time the system starts.

Configuration Item	Default Value	Available Values	Description
klipper_webui	fluidd	fluidd, mainsail	Set default klipper frontend UI Does not affect online switching functionality Effective when printer=klipper
canbus_bitrate	1000000	1000000, 500000, 250000	Set default bitrate for all CAN devices in the FAST system. Can only be modified here, default is 1M
crowsnest	0	0, 1	Set whether to enable Crowsnest 1: Enable 0: Disable Available for both klipper and rrf modes

---

Printer Type Configuration

• The following configuration items take effect every time the system starts.

Configuration Item	Default Value	Available Values	Description
printer	klipper	klipper, rrf	Configure the system to start with which service klipper: klipper, moonraker etc. rrf: RRF DSF, DWC etc.

---

Power Failure Shutdown

• The following configuration items take effect every time the system starts.
• To use the power failure resume printing feature, the power failure shutdown function must be disabled.

Configuration Item	Default Value	Available Values	Description
shutdown_pin_state	1	0, 1	Set the shutdown button's pin state 1: Low level repeat 0: High level trigger
shutdown_pin	PA21	PA21	Set the shutdown button's trigger pin. Set to none to disable

---

RRF Related Configuration

• The following configuration items take effect every time the system starts.

Configuration Item	Default Value	Available Values	Description
rrf2uart	0	0, 1	Temporarily unavailable. Will be provided in future versions

---

tip

• The following configuration items take effect only on the first startup.

Configuration Item	Default Value	Available Values	Description
firmware	empty	Valid firmware file path	Set firmware to automatically flash on boot. Currently only valid for C8, Gemini-V3, and C5

---

dangerous

• Do not modify anything below ######### PLEASE DO NOT EDIT THE FOLLOWING ######### in the configuration file.