Hello, its my first post here

I would love if someone could please give me a hint on how i can
connect both PanelDue and arduino to DuetWifi's serial port (the PanelDue port).
i want the arduino to acts as a sniffer for M408 Status responses while the PanelDue connected and functioning.
the arduino will control addressable led strip according to printer status.
Is there any other solution then using the micro usb port?

Thanks

hi guys
i would appreciate if you could please help me with a minor problem
on my corexy printer - while homing the bed it keeps going down instead of going up.
when i press the +5 Jog button it goes up and for -5 the bed goes down (is it ok?)
right now i am tring to setup my bl-touch sensor and when i try to use G30 command
the bed goes down instead of up. also when i try home Z and home all - the also bed goes down.
btw, at the reprap configuratore chose for z axis backward is it ok?

; Drives
M569 P0 S1                                         ; Drive 0 goes forwards
M569 P1 S1                                         ; Drive 1 goes forwards
M569 P2 S0                                         ; Drive 2 goes backwards
M569 P3 S0                                         ; Drive 3 goes backwards!

; homez.g
; called to home the Z axis
G91                 ; relative positioning
G1 Z5 F6000 S2      ; lift Z relative to current position
G90                 ; absolute positioning
G1 X-13.5 Y20 F6000 ; go to first probe point
G30                 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91                ; relative positioning
;G1 S2 Z5 F100      ; lift Z relative to current position
;G90                ; absolute positioning

Thank you all for your responses, i appreciate your help guys.
first will try to get a converter and use it, then i will report back

Hello, its my first post here

I would love if someone could please give me a hint on how i can
connect both PanelDue and arduino to DuetWifi's serial port (the PanelDue port).
i want the arduino to acts as a sniffer for M408 Status responses while the PanelDue connected and functioning.
the arduino will control addressable led strip according to printer status.
Is there any other solution then using the micro usb port?

Thanks