Posts made by mark

@Veti very interesting, I will have a read.

Thanks

Yes, it's simply feeding filament (down a ptfe tube to my hemera) in order to perform a load. There is a servo in order to disengage the filament from the motor once the load has completed. If I get this working then I can add another one for duel colour.

I am sure I am going to hit many road blocks and there might be easier/better ways but i want to try it anyway

I will try that later.

Maybe I am looking at this wrong and need to configure as an extra extruder as that does not have an endstop or axis limits. I wonder if I can setup a tool without any heater and run 2 tools at the same time

Mark

No error, in the console the line goes green, but the motor does not move

Thanks for your reply,

I did a G92 U5, but that did not allow me to then perform a G1 U100 F1000 - do i need to do anything else?

I have not tried applying axis limits as I don't want the motor to be limited in any direction

Regards,

Mark

Hi,

I am trying to add an additional stepper motor (No end stops, no restrictions) that I can simply control via a G1 command to move forward and backwards. I have tried a number of configurations but I can't get the motor to move. I have it plugged into Motor 9 on my Duex board and so far have gone back to the following in config.g

; Drives
M569 P0 S0 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S0
M569 P9 S0
; physical drive 3 goes forwards
M584 X0 Y2:1 Z7:5:6 U9 E3 P3 ; set drive mapping
M671 X151:-10:310 Y310:-10:-10 S10 ; Auto Bed Level leadscrews at rear left, front middle and rear right
M350 X16 Y16 Z16 U16 E16 I1 ; configure microstepping with interpolation
M92 X64.00 Y64.00 Z400.00 U409 E409; E393.6 ; Set steps per mm
M566 X1200.00 Y1200.00 Z40.00 U1000 E1000.00 ; Maximum jerk speeds (mm/min)
M203 X6000.00 Y6000.00 Z1000.00 U8000 E8000.00 ; set maximum speeds (mm/min)
M201 X1500.00 Y1500.00 Z100.00 U1200 E1200.00 ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z1200 U1000 E1000 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y-70 Z0 S1 ; set axis minima
M208 X300 Y300 Z300 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"!xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"!e0stop+!ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

Any pointers or links to how to do this would be welcome (I am struggling to know what to google)

Reagrds,

Mark

@jay_s_uk

Perfect, thanks - will give it a try

I looked through all the documentation but must have missed that nugget of a link you posted

@jay_s_uk

I need each motor to home to its designated endstop, so the first Y motor will stop when it hits its endstop, but the second motor keeps going until it hits it's own endstop.

Hope that makes sense!

Mark

Re: Duel motor/endstop on the Y

I am upgrading to RRF3 and now see that I don't have to split my Y axis to do a home with my 2 motor 2 endstop setup.

Can anyone just confirm if this is the correct syntax in RRF3

M584 X0 Y2:1 Z7:5:6 E3 P3
M574 X1 S1 P"!xstop"
M574 Y2 S1 P"!ystop" ;Endstop for the Y2 (plugged into standard Y pins)
M574 Y1 S1 P"!e0stop" ;Endstop for the Y1 (plugged into standard z motor pin and extruder 0 endstop pin)

Many Thanks,

Mark

@dc42 and @deckingman Massive thank you for your help, I swapped the endstop over to the E0 endstop and it now works.

Mark

@deckingman I appreciate your reply, I am starting this think I should just upgrade to RRF3 before i get all this working and then have to do it later.

@dc42 said in Duel motor/endstop on the Y:

If homing Y by itself is already working as you want it, that's probably the simplest solution.

That's a good point, when i home Y only my Y end stop works but my U endstop does not. As the U is using the Z endstop pin (my Z motors are plugged into my duex5) do I have to do something to enable it (the LED on the board lights up when i press the end stop)?

Sorry for all the questions, I have been struggling with this all week.

Mark

Thanks both,

@dc42 is there a guide on what changes need to be made when upgrading from RepRapFirmware 2 to 3?

@deckingman I might just copy the HomeY changes across to see if that helps me get it working for now.

I will let you know how i get on!

Thanks,

Mark

Good morning all,

I am trying to configure duel motor Y axis, each with their own endstop. I have been following https://duet3d.dozuki.com/Guide/Independent+Z+motors+and+endstop+switches/18?lang=en#content but struggling to get it working.

Does HomeAll.g call HomeY.g (where is am splitting Y into Y and U) or do i need to configure the Y/U split in HomeAll as well?

If it helps I have uploaded the relevent config files that i have been changing in order to try and get it working homey.g homeall.g config.g

Any pointers most welcome, for a bit of background its for a custom printer using lead screws on X, Y and Z and i need the 2 Y leadscrews to both hit their endstops so that they "square up" on the printer

Mark

I believe that if you use a heater output then it is needed.

Mark

@grizewald Thank you, I will have a read and see if I can get my head around what they do. I was aware that they were directional, but thank you for confirming which way they need to go.

Hopefully this thread will also be useful to others who are struggling to understand what is required. I can do mechanical (designing my printer basically from scratch) but electronics are over my head!

@grizewald amazing, ordering now

@dc42 Thanks, I have searched ebay for a flyback diode but I have no idea what to buy. Would you be able to provide a link or product number so I can get the correct diode (sorry I don't have a clue with electrics)

Mark

Thank you

I have been doing more research and realise that the previously linked mosfet might not work, however could I use https://www.ebay.co.uk/itm/15A-400W-MOS-FET-Trigger-Switch-Drive-Module-PWM-Regulator-Control-Panel-UK/293280226312?hash=item4448dd1c08:g:FBEAAOSwAZ9bbvy9 My query comes because the mosfet has ground and pwm, but from what I can see the duet has + and pwm

I would wire it directly but I am not sure how I get 5v for my hot end cooling fan and 12v (V IN) for the air pump - from what I can see the voltage jumper affects all the fan voltages

Mark