Posts made by Kenny66

The extruder steppers (for various reasons) will stall because they don't have enough torque to push the filament. I was curious if running a stepper constantly at it's edge of torque before a stall could possibly harm the Maestro? No matter what speed you're extruding the motors get very warm. If you try and push the speed over 20mm/s (if it doesn't stall) the motors will get to hot to hold a finger on for more than a second or two and you start getting Phase Disconnected errors, which we know was (in that firmware version) a catchall error that in this case was indicating that the TMC driver was overheating and briefly shutting off to protect itself.

Not sure. I'm running 1/16 microstepping with Interpolation on and I think most are running the StealthChop with the setting D3 V0, because as soon as you leave StealthChop the steppers start squealing like crazy.

M3D Promega

Thanks for the reply.

There's a group of us that have this printer and a few of us have had components on the boards suddenly stop working. For me the extruder heater ports just stopped working out of the blue in between prints. For others one of the stepper drivers shows evidence of dying. One guy had a terrible issue with layer shifts and when he swapped boards they stopped.

So we were just curious if that high inductance under normal use conditions might put enough of a strain on the driver to cause a failure.

The thermostatically controlled fan will not change. It will be invisible and will just run any time the heater goes above the temperature you set.

The Bridging Fan Speed and any settings in S3D will only affect the part cooling fans.

You should have a Fans section in your current config file. In the Duet Web Control click on Settings, then on the System Editor tab and click on config.g to edit it.

The Tool configuration should also be in there.

The Bridging Fan Speed Override controls the part cooling fans and is used if you set your fans on the Cooling tab in S3D to something lower than what you want for bridging. So if you set your part cooling fans to 60% you can set the Bridging Fan Speed Override to 80% for example to get a little extra cooling during bridging.

Hi Ethan,

These are things that you would change in your Duet configuration, not in S3D.

To have the hotend fan thermostatically controlled, this should be your config line for that fan.
M106 P0 S0 I0 F4 H2 L1.0 T50
Change H2 to your heater number, Set the T value to the temperature you want the fan to come on at. Set L to the fan speed you want. 1.0 is full speed.

To use 2 fans (example fans 1 and 2) as part cooling fans you link them in your Tool Setup.
M563 P0 D0 H2 F1:2 S"Extruder 1"
The F value associates those fans with the part cooling fans for that tool.

@DC42, I have just a quick question about the recommended ratings for steppers for the Duet 2 Maestro.

I have a printer that uses the Maestro and the CoreXY steppers have the following specs.

• Rated Current = 0.7 A
• Phase Resistance = 8.8 Ohms
• Inductance = 18 mH

The Extruder steppers are:

• Rated Current = 0.45 A
• Phase Resistance = 20 Ohms
• Inductance = 24 mH

Considering this recommendation in the Wiki:

Avoid motors with rated voltage (or product of rated current and phase resistance) > 4V or inductance > 4mH.

Is it possible these motors could damage the board over time?

Thanks.

I've recently mounted my pi camera upside down and have found a combination of Flix X and a 180 Rotation Angle gives me the proper image, but the DWC doesn't save the Rotation Angle when I click on Apply Changes. If I refresh the web page the camera image flips back over.

Could always take the bed sheet off and probe the aluminum directly and see what you get.

I've checked those things but the pin drops and retracts fine during a G29 S0 bed mesh. (64 probe points) The only time it's intermittent is doing a G30 S-1. It's really weird.

From the mesh image it looks like it's bowing UP not down.
What do you have on top of the cast aluminum bed?
My guess is your bed sheet is flexed either from the binder clips or from natural flex when it's heated and being held at the corners.

Truth be told though I wouldn't worry about it. The bed mesh will compensate for that and your mean error is < 0.1mm. I wish mine was that close.

I am also having the same issue that the probe doesn't always deploy when doing a G30 S-1. Mine does complete a bed mesh with no issues though.

Having an issue now where the BLTouch works fine during G29 S0 bed mesh, but only deploys about half the time when using G30 S-1. Even sometimes right after starting up the machine and homing is done, I run G1 X150 Y150 Z50 and then G30 S-1 and it only deploys about half the time.

This is being used on a printer that has an endstop at Z max and I'm using the BLTouch for Z0 and bed mesh.

In config.g
M574 X2 Y2 Z2 S0
M558 P9 H5 F250 T5000
G31 P25 X-52 Y30 Z1.5
M557 X0:310 Y35:330 S40

In deployprobe.g
M280 P64 S10

In retractprobe.g
M280 P64 S90

That was it. Sometimes you just don't know what to take a closer look at. I found a stray strand of wire just outside a dupont connector that was connecting the control wire to ground.

Thanks for pointing me in the right direction.

The troubleshooting was where I saw the suggestion to cut the trace to make the output 3.3v.

@zzing I noticed there that it changes the OUTPUT of the BLTouch to 3.3v, you still have to plug the Red wire for the servo into the 5V line of the probe plug.

It does do the self test at power up, lowers and raises the pin just fine. Red light stays on after that, so no error conditions detected.

deployprobe.g
M280 P64 S10

retractprobe.g
M280 P64 S60

Currently running 2.02rc3 and the latest web ui files.

I've quadruple checked the wiring and the configuration.

The probe goes through it's test on powerup, deploys and retracts twice just fine.
M280 P64 Sxxx commands do nothing.
deployprobe.g and retractprobe.g are there if needed.
M401 does nothing.
I did follow the recommendation in the troubleshooting to cut the trace on the probe and plug into 3.3v. This is a genuine BLTouch V2.

Here is my config for the probe.
M574 Z1 S2 ; Set endstops controlled by probe
M558 P9 X0 Y0 Z1 H5 F500 T5000 ; Set Z probe type to bltouch and the dive height + speeds
G31 X35 Y110 Z0 P25 ; Set Z probe trigger value, offset and trigger height

Any ideas?