Even if I don’t recommend it, K40 FluidNC shield allows you to use your K40 over WIFI.

Two modes of use:

With the WEBUI interface
Directly with Lightburn over WIFI (my favorite if you have a good WIFI connection)

We will first configure the FluidNC K40 shield to connect to your WIFI network

Connecting the FluidNC K40 shield to WIFI

You must enter your network credentials in the K40 FluidNC shield’s configuration.

To do this, enter the following commands in the Lightburn console:

$sta/SSID=YourWifiName
$sta/Password=YourLongPassword (Needs to be at least 8 characters long and less than 64)
$reset

Following these commands you should see something like this in the console:

[MSG:INFO: FluidNC Ava_4.3.1]
[MSG:INFO: Compiled with ESP32 SDK:v4.4.1-1-gb8050b365e]
[MSG:INFO: Local filesystem type is SPIFFS]
[MSG:INFO: Configuration file:config.yaml]

[MSG:INFO: Machine K40_AvaShield]
[MSG:INFO: Board 4_Test_Ava_Shield_7.x_XYZ]
[MSG:INFO: I2SO BCK:gpio.22 WS:gpio.17 DATA:gpio.21]
[MSG:INFO: SPI SCK:gpio.18 MOSI:gpio.23 MISO:gpio.19]
[MSG:INFO: SD Card cs_pin:gpio.5 detect:NO_PIN]
[MSG:INFO: Stepping:I2S_stream Pulse:4us Dsbl Delay:0us Dir Delay:1us Idle Delay:255ms]
[MSG:INFO: Axis count 3]
[MSG:INFO: Axis X (5.000,315.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     stepstick Step:I2SO.2 Dir:I2SO.1 Disable:I2SO.0]
[MSG:INFO:     Neg Limit gpio.39:low]
[MSG:INFO: Axis Y (5.000,215.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     stepstick Step:I2SO.6 Dir:I2SO.5:low Disable:I2SO.4]
[MSG:INFO:     Neg Limit gpio.34:low]
[MSG:INFO: Axis Z (-19.500,0.500)]
[MSG:INFO:   Motor0]
[MSG:INFO:     stepstick Step:I2SO.10 Dir:I2SO.9:low Disable:I2SO.8]
[MSG:INFO:     Neg Limit gpio.35:low]
[MSG:INFO:   Motor1]
[MSG:INFO: safety_door_pin gpio.27:low:pu]
[MSG:INFO: reset_pin gpio.12:low:pu]
[MSG:INFO: feed_hold_pin gpio.14:low:pu]
[MSG:INFO: cycle_start_pin gpio.13:low:pu]
[MSG:INFO: Kinematic system: Cartesian]
[MSG:INFO: Laser Spindle Ena:gpio.16:low Out:gpio.15 Freq:15000Hz Res:12bits Laser mode:On]
[MSG:INFO: Using spindle Laser]
[MSG:INFO: Mist coolant gpio.4]
[MSG:INFO: Probe Pin: gpio.36:low]
[MSG:INFO: Connecting to STA SSID:YourWifiName]
[MSG:INFO: Connecting.]
[MSG:INFO: Connecting..]
[MSG:INFO: Connected - IP is 192.168.xxx.yyy]
[MSG:INFO: WiFi on]
[MSG:INFO: Start mDNS with hostname:http://fluidnc.local/]
[MSG:INFO: SSDP Started]
[MSG:INFO: HTTP started on port 80]
[MSG:INFO: Telnet started on port 23]

Use with WEB interface

Connect with your browser to the IP address previously indicated in the console or to the address http://fluidnc.local/

You should see this page appear:

WEB Interface for your K40 FluidNC Shield

You can now use this page to enter commands in the console, perform movements or even start engravings.

To launch WIFI engraving through WEB interface, you must :

Install an SD card in the dedicated compartment on your shield,
Copy your GCODE file on the SD card using the “UPLOAD” button at the top right of the interface WEB of your FluidNC K40 shield
Make a HOME (it does not change 😁)
Start burning the GCODE file by clicking in the SD files window on the “play” button

Lancer une gravure via l’interface WEB de votre shield FluidNC K40

Using Lightburn over WIFI

You can also use Lightburn over WIFI.
For this we will install a virtual COM port that will be used by Lightburn to connect to your FluidNC K40 Shield in WIFI

Make sure you have installed Lightburn according to my instructions

Download the free software Tibbo by clicking on the download TDST button