Topics created by MaxGyver

@MaxGyver

A more dodegy approach would be, to physically attach a speed potentiometer of a stepper driver circuit to a small hobby servo motor, the servo motor could than turn the speed of the stepper motor / peristslt pump, it's a bit dodgy but it works, I have done it before..

@droftarts said in [3.5.0-rc3+] M108 (cancel heating) is not working.:

If you run M109 et al in a macro, cancel it by sending M108 from the console in DWC; I think that shouldn’t be blocked.

Yes, that works. Thank you very much for clearing that up!

@MaxGyver yes I think so, on the basis that the hot end is PTC so the power draw will drop to 80W or lower after a short while. You will need to ensure that the crimp connections that you make to the Microfit connector are good, and I suggest you check for signs of the tool board overheating from time to time.

Thank you all for your feedback! In conclusion, we all agree that for heavier machines, hardware limit switches are a must-have or are even mandatory for machines that are used in professional/business environment.

@dc42
@T3P3Tony
Are the X and Y moves considered probing or travel moves in G30 Pnnn?
I assumed that moves in X and Y are travel moves that position the head above the next probing point, and only the following move in Z is the actual probing move. Therefore, the limits in X and Y should be respected like for any other travel move. This would avoid raising faults or adjusting the bed.g macro.

@T3P3Tony

Excellent, thank you!

@MaxGyver I believe the most time consuming part in your macro is the echo iterations line?

//edit Just cobbled together my version of your macro, which I made bulletproof with brackets (CNC-mode expressions are different)
Also placed G91/G90 outside of the loop. No need to repeat those lines 30 times, I guess?

M596 P1 ; select movement queue number M595 Q1 P10 ; lengthen movement queue to 10 elements M564 H0 ; allow movement of axis that have not been homed G91 ; relative while {(iterations<=30)} if {(state.gpOut[2].pwm>0 )} break G0 W{iterations} ; progress W-axis G4 P100 G90 ; absolute

@T3P3Tony

Indeed, I wrote a simple macro that sets the height of the dust shoe to the height of the spindle collet+ the current tool length. This macro is called after a toolchange or if one of the macros for mist cooling or dust extraction is called. Maybe I will add a demon later that updates the height of the dust shoe regularly during a job. But for now this will do.

I made a short video while running a tool change. Not having to fiddle with the dust shoe during toolchanges is already so much more convenient.

@oliof said in [3.5.0-rc1/rc3] Issue with Probe offsets:

how would the machine know where the head is so it can apply probe offsets before homing? Is there something I am missing?

The machine is homed to Zmax after booting. Then the probing routine is started.

@gloomyandy
@droftarts
@Notepad
@dc42

From my perspective, there is no need to switch to CAN0 from CAN1. Since it was not specified in the team gloomy documentaion that only CAN1 will work with the toolboard, I assumed both would do it.

In my case it would have simplified the wiring of the toolboard a bit because my 24V PSU is mounted close to the Duet 6HC. I have four 1HCL expansion boards mounted inside the build chamber. But they are all running on 48V. So I split the toolboard cable in CAN and power. CAN goes to to ne of the toolboards and power goes all the way down to the underside of my printer to the 24V PSU. Not as tidy, but works. 🙂

@dc42 Thank you! I got it working with conditions 😊 👍

success.png

@timschneider Thank you! The Post processor works like a charm right out of the box. 😀👍

I did reduce the spindle Dwell (G4 S10) time from 10 to 3 Seconds tough. My spindle speeds up quite fast, so 3 seconds is more than enaugh.

In case anyone wants to adjust this as well:

delete Dwell (G4 S10).png

@MaxGyver i use 2 kinds of probes on my CNC- an aligator clip to connect to the tool/touch-off plate for Z and a baby reinshaw type probe for X-Y.

the touch off plate will probe twice for setting Z.

the X-Y probe i think will only touch once.

I am not currently near that machine but will be over the weekend. i will try to make some experiments and report back.

sinneD

@dc42 Ah okay, that's great!

@droftarts As I saw my name mentioned - there is a typo in the above although the meaning should be obvious. "What I do on my X axis..." should read "....on my Z axis". I'll correct my original post.

@MaxGyver did you see my message of 1 November?

@MaxGyver it might be. But that requires extra circuitry, and additional cost. Also, it’s been reported by @jay_s_uk that the spindle speed can vary if the voltage wanders, I guess depending on the quality of the PWM to 0-10V conversion and maybe interference or wiring losses. RS485 and Modbus has been suggested as a better way to control spindles, and is under consideration.

Ian

@dc42 Thank you for your feedback.

Inverting the input was the first thing I tried without success.

In this case I did not design or build the control cabinet, I can only recon that the 48V and 24V PSU do not share a common ground and therefore the end stops behave strange.

When powering the duet and endstops from the same 24V PSU everything works as intended.

@chrishamm
Hey, thank you for the feedback! It is nice to see suggestions are being taken into account.