I'm wondering whether anyone made progress on this topic, connecting a Smart Orbiter 3 to a Duet board. I have a Duet3 MB6HS and am trying to with up the SO3 to it. Specifically, I'm trying to connect the filament sensor and LED. I've got it wired up to IO4, with the yellow/LED being on IO4.out, and brown/filament-sensing being on io4.in. I've got blue/GND and red/+5v wired up to the corresponding pins on IO4 as well. I'm not getting anything from the LED, and the voltage change on the filament sensor doesn't make any sense either. I'm using a multimeter to measure IO4.in to GND, but the voltage change is only 0.1V when I put filament in. Anyone have any thoughts on this?

It was a LIS3DH, but that doesn't matter now, because it will no longer be used, a Roto-Toolboard is currently installed, but not yet fully connected, which should then work without any problems .

But I will check the wiring from the LIS3DH again later, just to know if it was this one.

@dc42 Yes, i have following line in StartCollecting method:
ceef864d-e5b2-4e3a-890f-068f9f93f8b1-image.png

@droftarts Yes!

That did work to get the probe to function!
I just need to setup the z probe routine for bed leveling.

I am running into a different error, trying to have multiple z axis motors.
Only one of them is functioning. Driver 2 with a jumper on the ZB segment.
Then trying to pair the driver 6 and 7 to the Z axis.

Is this correct? When I jog after M564 H0, I only have one drive moving.

; Smart Drivers
M569 P0 S0 ;D1 ; driver 0 goes forwards (X axis)
M569 P1 S1 ;D2 ; driver 1 goes forwards (Y axis)
M569 P2 S1 ;D2 ; driver 2 goes forwards (Z axis)
M569 P3 S1 ;D2
M569 P6 S1 ;D2 ; driver 3 goes forwards (extruder 0)
M569 P7 S1 ;D2 ; driver 3 goes forwards (extruder 0)

; Motor Idle Current Reduction
M906 I30 ; set motor current idle factor
M84 S30 ; set motor current idle timeout

; Axes
M584 X0 Y1 Z2:6:7; set axis mapping
M350 X16 Y16 Z16 I1 ; configure microstepping with interpolation
M906 X800 Y800 Z800 ; set axis driver currents
M92 X80 Y80 Z400 ; configure steps per mm
M208 X0:200 Y0:200 Z0:200 ; set minimum and maximum axis limits
M566 X900 Y900 Z12 ; set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z180 ; set maximum speeds (mm/min)
M201 X500 Y500 Z20 ; set accelerations (mm/s^2)

@droftarts I don't think I want to enable the servos on startup because then if the servos were ever disabled with a M18 for instance, that would trigger a driver-error because the HLFB wire would switch.

Question about the M957 being used for testing, would it cause the printer to pause if sent during a print?

Thanks

OK, so after 4+ years ( 🙂 ), I donated the printer to a friend and came back to this issue. I will leave the fix here, if others hit it .
Disconnecting the thermistors had no effect. The indicated temp was still around 66 degrees now (yes, it degraded over time).
Compared bed, E0 and E1. Measured resistors, voltages. Short circuiting indicated 2000C, as expected. E1 was different from bed and E0 in measured values (3.3 V compared to 3.1V on the others the measuring pin).
Long story short, replaced C19 (the bad guy, or C18 looking at the picture. The one that filters the E0 sensor signal) with C65 (donor) and everything works as in the first day.
WhatsApp Image 2024-10-22 at 1.15.23 PM.jpeg

@Forum-user Looks like a MKS SERVO42C V1 board. See https://github.com/makerbase-mks/MKS-SERVO42C/wiki/MKS-SERVO42C-V1.0-Home

I'll have a look tomorrow how it can be wired. I'd guess you need to use the on-board interface to set the mode, covered here https://github.com/makerbase-mks/MKS-SERVO42C/wiki/Menu-instruction-V1.0

Ian

@o_lampe Thank you for this idea !
Yes, I would like using only one motor with a chain, cause even if the ground it's not perfect, it will planting very slowly.
I imagine this more like a semi-automatic transplanter, so I will be close to it to drive him by hand.

Hey @dc42,

Currently I removed +5V from dedicated PCI-Ex to USB adapter for Duet 3 Main Board 6XD and the system is working as intended.

When I catch some time I will investigate the option with daemon.g and VIN power monitoring so that this external modification is not needed.

Thank you,

@droftarts

Thanks for the update of V_IN to PWM-GND.

The fans are not too large, only 1 oversized 6015 always on fan which is being used as a heatsink fan and the extra size allows for bypass air to be used to cool the TB and extruder motor.
And 1 4020 fan as a part cooling fan, as the 5V 4020's are frankly terrible

@cosmowave Thanks, I've updated the documentation here: https://docs.duet3d.com/en/User_manual/Connecting_hardware/IO_Neopixel_DotStar#neopixel-leds

Multiple LED strips are supported:

Duet 3: up to 5 in a system (mainboard + expansion boards) Duet 2 WiFi/Ethernet: up to 2 LED strips, limited by RAM

It's possible that @dc42 might be able to increase the number of LED strips supported in the next release, particularly if you're only using a small number of LEDs on each strip. But it will depend how much free RAM you have on the Duet, as space is rather limited on Duet 2.

Ian

@Forum-user It's basically backwards. It would be far more effective to have the high static pressure output blowing across the drivers.

@max22 do you have enough spare stepper motor driver outputs on the Duet+DueX to drive each of the 3 Z motors from a different driver?

@juanggrados the PCB trace between VIN+ and the bed fuse is lifted. You can solder a piece of thick copper wire between them in its place.

@dc42 @droftarts thank you again! I'll get back to experimenting and will post an update on my progress.

Good morning,
Thanks for the response, I'll be patient.

Thanks.

@dc42 Thanks for the reply. I thought that that was probably the case

@droftarts

I think mainly that N-channel MOSFETs are better for fast switching, so are more suitable for PWM applications such as the heaters and fans.

I use P-channel MOSFETs a lot, but the fact remains that they dissipate much more heat - up to a magnitude more than the N-types -, so cooling becomes a major problem.

Instead of a common ground, you can have a common +V

Yeah, that's what, on the continent, British cars were famous of - or feared … 😊

@dc42 Thanks, connecting the int pin fixed it.

For anyone else reading this thread in the future, you need 5 wires from a LIS3DH to a SAMMY C21.

GND - GND
V33 - V+
PA22 - SDA
PA23 - SCL
PA13 - INT

@jay_s_uk okay, thanks thats easy to make.