Issues with Biqu Microprobe v2 on Can Bus EBB SB2209 CAN (RP2040)

[Amonen]

I have finished my build (2.4r2 350) and all is working great, except the probe.

So far the probe is self checking on boot, responds to probe_up and probe_down, but I cant get it triggered (State is always triggered)

Board : Manta m8p v2
Probe : Biqu Microprobe v2
CanBoard : Can Bus EBB SB2209 CAN (RP2040)

Probe config

[output_pin probe_enable]
pin: EBBCan: gpio22
value: 0

[probe]
pin: ^!EBBCan: gpio21
deactivate_on_each_sample: False
x_offset: 0
y_offset: 0
z_offset: 0 # Will be overridden when you do a PROBE_CALIBRATE
speed: 5.0
activate_gcode:
PROBE_DOWN
G4 P500
deactivate_gcode:
PROBE_UP


Do I need to solder a pullUp resistor to the signal line?

Is using a Tap V2 a better alternative than trying to get the probe running?

Any help welcome