@Valveman See @jay_s_uk's post earlier. That's all you need. I was just explaining what it actually does.

Ian

I did it. The solution was actually very simple, so I'm wondering why I didn't figure it out much earlier.

G38.3 Z 50 F 100 G10 L20 P1 Z0

https://youtu.be/7yjKVpkOM8k?si=Ropq6YF0fWoNj_r5

Thanks

@Phaedrux Wow, I can't believe I missed that. Everything seems to be working perfectly now.

Thank you for all the help.

@Valveman I'm expecting a new cutter today. Plan to post my results asap.

@an-andrew that's an awesome machine

@mike_b I ran mine on a BTT board with external drivers running RRF

@oliof no you won't, because the only way to tell if a Modbus device is responding is to send a command to write or read a register and check whether the M260.1 or M261.1 command returns success - and you can do that yourself.

When we start using Modbus to implement critical functions without using M260.1 or M261.1 such as changing spindle speed, then we may introduce events to handle failure of those operations.

@siltob1 as stated at https://docs.duet3d.com/en/User_manual/Reference/Gcodes#g68-coordinate-rotation coordinate rotation is not applied when running a system macro. So your tool changes should work even without using G53.

@facardi
as a side note, using a end stop for each motor, i ran into an issue while homing. i had a faulty endstop one time (shorted) and because i use nema 32 steppers the one side drove so hard i bent my y axis. the guys here helped me by writing a script that checks for shorts before it homes. it triggers a error message and stops homing routine. it works great! i don’t know how to give a link but just look for “dual axis woes”

@Kittifix you are maybe able to use it, but RRF is able to create a spindle with an PWM output for the speed control.

https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m950-create-heater-fan-spindle-led-strip-or-gpioservo-pin

If you use a PWM to Freqency Converter PCB you will maybe able to use the pulse input.

@Alijambo73 I just realised your board says "Made in China" on the back, so this is very probably a clone board. You can get the genuine Duet board from Filastruder: https://www.filastruder.com/products/duet-expansion-board, with a much higher probability of it working correctly!

Ian

You can see some examples of basic homing files here: https://docs.duet3d.com/User_manual/Machine_configuration/Configuration_cartesian#homing-files

@nyaru Thanks for the note, I'm going to change that in CNC mode in the next versions.

@gloomyandy morning, thanks for checking that with me. I read all the docs to do with laser control thoroughly when I was using this board for my laser cutter. At the time I’d ordered the expansion board to do it properly but the delivery guy marked it as “left in outhouse” (we don’t have an outhouse) and I never saw it again. In the end I connected it to fan0 as a 5V capable PWM and I’ve had almost perfect control over the laser prior to this setup.
The one issue I got was it powering up for a second at initialisation, I had figured that to solve that I could set bedheater as a GPIO and essentially use it as my power control for the laser. This in testing has worked fine but one of my tests today will be to decouple that and run the laser directly from the PSU like it was previously just to sanity check that setup that I know ought to work.

For the spindle I could try feeding it a 5Vref from the fan0 connector to the speed controller, good shout. Laser I don’t have that option unfortunately.

Hi,
I have built also a plasma cutter with a duet controller.
It works great for simple cuts. I used estlecam and now lightburn.If you want to cut complex shapes you should mention a torch hight control, because of heat-distorsion. If you are using pilot arc torch you have to do the wiring carfully (shielding and grounding) because of EMI