Wiring BIQU microprobe to Duet RotoToolBoard

[Timothee Leblond]

Hello,

I'm trying to connect a BIQU microprobe V2.0 to my Duet RotoToolBoard.
However, after wiring and seeing the probe deploying and retracting when turn on the Duet3 mini 5+ connected, I cannot control it. Trying to trigger it manually using M401 or M280 P0 S10 do not work and M119 says Z probe non stopped (while probe retracted).

Wiring is as follows:
-White cable to the pin IO_0_out of Roto
-Both black cables to pin GND
-Yellow to pin IO_0
-Red cable to pin 5V

Here is the section in my config.g file:

M558 P9 H6 F250:30 T8000 C"!^121.io0. in" ; Set probe input to IO_0 on Rototoolboard
M950 P0 C"121.io0.out" ; Set servo output on Rototoolboard
G31 X20 Y0 Z3.3 P25 ; set Z probe trigger value, offset and trigger height

Here is my deployprobe.g file:

M280 P0 S10 ; Deploy probe
G4 P500 ; Pause for 500ms to ensure deployment

Here is my retractprobe.g file:

M280 P0 S90 ; Retract probe
G4 P500 ; Pause for 500ms

Would you have any idea?

Thank you for your precious help!

Tim

[jay_s_uk]

@Timothee-Leblond the microprobe isn't a servo so you can't use M280.
You need to use M42. Have you looked at the BTT docs for it?

[Timothee Leblond]

@jay_s_uk Thanks for your answer.

Yes indeed, I've been following the doc on Duet's website as well as the teamgloomy tutorial on how to connect a BTT microprobe.

But it's not working as it should.

[jay_s_uk]

@Timothee-Leblond you have the wrong commands so it won't work.
Can you show me on the teamgloomy wiki on a page for the microprobe it says to use M280?

[jay_s_uk]

@Timothee-Leblond here's the BTT manual for the microprobe v2 https://github.com/bigtreetech/MicroProbe/blob/master/MicroProbe V2 User Manual_20240330.pdf

[Timothee Leblond]

@jay_s_uk

You're right, I was wrong.

I updated everything with the right commands but It is still not working.

-config.g:

M950 P0 C"121.io0.out" ; Set servo output on Rototoolboard
M558 P9 H6 F250:30 T8000 C"^!121.io0 .in" ; Set probe input to IO_0 on Rototoolboard
G31 P500 X0 Y0 Z0 ; set Z probe trigger value, offset and trigger height

-deployprobe.g file:

M42 P0 S1 ; Deploy probe
G4 P500 ; Pause for 500ms to ensure deployment

-retractprobe.g file:

M42 P0 S0 ; Retract probe
G4 P500 ; Pause for 500ms

[Timothee Leblond]

@jay_s_uk

I also created two macros using M42 P0 S1/S0 but there also not working.

[jay_s_uk]

@Timothee-Leblond can you show your wiring?

[Timothee Leblond]

@jay_s_uk

Sure, here it is:

[jay_s_uk]

@Timothee-Leblond that wiring looks a little rough. it may well be that a couple of the pins aren't making a full connection.
The crimps should be fully inside the housing and locked in place

[Timothee Leblond]

@Timothee-Leblond

The microprobe is connected to IO_0 as follows:

-White cable to the pin IO_0_out of Roto
-Both black cables to pin GND
-Yellow to pin IO_0
-Red cable to pin 5V

What triggers me is that the probe is deploying and retracting when I start the motherboard.

[Timothee Leblond]

@jay_s_uk

I agree with you but It's working when the motherboard starts so I'm assuming it should be ok?
I will rewire it for sure to eliminate this doubt.

[jay_s_uk]

@Timothee-Leblond all that means is its getting power. the mainboard doesn't send any signals to it at start

[Timothee Leblond]

@jay_s_uk

Got it. The status led is also blinking red. Do you think my problem could come from this?
If yes, how should I solve this?

Thanks for your help,

[jay_s_uk]

@Timothee-Leblond i would recheck all your wiring first and make sure thats sound and fully connected properly first

[Timothee Leblond]

@jay_s_uk I double checked and rewired everything but I feel the rototoolboard is not communicating with the mainboard. The light is still blinking red.

Prior the installation of the Raspberry Pi, it was working as far as I remember.

[Timothee Leblond]

@Timothee-Leblond

From what I read here, the status LED flashing red once per second at the second is normal and does not indicate a problem.

But I still can't send any command to the Roto Tool Board...

[droftarts]

@Timothee-Leblond Does the Roto board show up in DWC > Settings > Machine specific > Electronics? What firmware version does it report there, and CAN bus address? Then post your full config.g.

Ian

[Timothee Leblond]

@jay_s_uk

Sending a M122 B121 command works. It shows a communication between both Roto and Duet3.

[Timothee Leblond]

@droftarts Here is what I have: