external drive a4988 duet no work

Phaedrux

Where do you have the external driver connected?

https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers

dpsslaser2020

@phaedrux said in external drive a4988 duet no work:

Where do you have the external driver connected?

https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers

E2 Axis assignment xyz working!
But E2 does not work on the "E" axis!

If I set E2 "a4988" on these axes
working on E2
M584 X0:5 Y1: 4 Z2 E3
working on E2
M584 X0 Y1: 4:5 Z2 E3
working on E2
M584 X0 Y1:4 Z2:5 E3
not working on E2 don't know why?
M584 X0 Y1:4 Z2 E3:5

Phaedrux

@dpsslaser2020 said in external drive a4988 duet no work:

M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z800.00 E145.75 ; Set steps per mm
M566 X600.00 Y600.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E300.00 ; Set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z20.00 E10000.00 ; Set accelerations (mm/s^2)
M906 X1300.00 Y1300.00 Z800.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent

You'll need to set the values for the second E drive.

Example: M350 X16 Y16 Z16 E16:16 I1

Note the E16:16

Extruders are independent axis and need to be each defined.

engikeneer

@dpsslaser2020 you've also only mapped your first extruder to your tool T0 (the D parameter in M563). From your config

; Tools
M563 P0 D0 H1 ; Define tool 0

You either need to define a second tool, or assign both extruders to tool T0. You can then set a 1:1 mixing ratio so that they both move the same amount (or any ratio you choose)

dpsslaser2020

@phaedrux said in external drive a4988 duet no work:

@dpsslaser2020 said in external drive a4988 duet no work:

M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z800.00 E145.75 ; Set steps per mm
M566 X600.00 Y600.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E300.00 ; Set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z20.00 E10000.00 ; Set accelerations (mm/s^2)
M906 X1300.00 Y1300.00 Z800.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent

You'll need to set the values for the second E drive.

Example: M350 X16 Y16 Z16 E16:16 I1

Note the E16:16

Extruders are independent axis and need to be each defined.

M350 X16 Y16 Z16 E16:16 I1                            ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z800.00 E145.75:145.75               ; Set steps per mm
M566 X600.00 Y600.00 Z12.00 E120:120              ; Set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E300:300        ; Set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z20.00 E10000:10000           ; Set accelerations (mm/s^2)
M906 X1300.00 Y1300.00 Z800.00 E800:800 I30         ; Set motor currents (mA) and motor idle factor in per cent
M84 S30                                  

Auxiliary configuration for all dual motors with this setting?
but that doesn't help either!

dpsslaser2020

@engikeneer said in external drive a4988 duet no work:

@dpsslaser2020 you've also only mapped your first extruder to your tool T0 (the D parameter in M563). From your config
; Tools
M563 P0 D0 H1 ; Define tool 0
You either need to define a second tool, or assign both extruders to tool T0. You can then set a 1:1 mixing ratio so that they both move the same amount (or any ratio you choose)

M563 P0 D0:1 H1 F0 ; define tool 0
M563 P1 D0:2 H1 F0 ; define tool 1
M567 P5 E3:5

there is a mix icon but only one engine goes for both of them to move in mix mode! alt text

Phaedrux

@phaedrux said in external drive a4988 duet no work:

Where do you have the external driver connected?

https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers

Where do you have it connected? The expansion header?

dpsslaser2020

@phaedrux said in external drive a4988 duet no work:

@phaedrux said in external drive a4988 duet no work:

Where do you have the external driver connected?

https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers

Where do you have it connected? The expansion header?

E2 connection pin are correct because it works on xyz axes when I set it up!
software setup problem is in this looking for the right way!

engikeneer

@dpsslaser2020 said in external drive a4988 duet no work:

M563 P0 D0:1 H1 F0 ; define tool 0
M563 P1 D0:2 H1 F0 ; define tool 1
M567 P5 E3:5

Here you have assigned two tools. One uses extruders 0 & 1 (okay), the other tool uses extruder 1 & 2 (which doesn't exist).

In your M567 you have assigned a mixing ratio of 3:5 on tool 5 (which doesn't exist!).

You want:

M563 P0 D0:1 H1 F0 ; define tool 0 using extruder 0 and 1
M567 P0 E1:1 ; assign 1:1 mixing ratio to tool 0

dpsslaser2020

@engikeneer said in external drive a4988 duet no work:

@dpsslaser2020 said in external drive a4988 duet no work:

M563 P0 D0:1 H1 F0 ; define tool 0
M563 P1 D0:2 H1 F0 ; define tool 1
M567 P5 E3:5

Here you have assigned two tools. One uses extruders 0 & 1 (okay), the other tool uses extruder 1 & 2 (which doesn't exist).

In your M567 you have assigned a mixing ratio of 3:5 on tool 5 (which doesn't exist!).

You want:
M563 P0 D0:1 H1 F0 ; define tool 0 using extruder 0 and 1
M567 P0 E1:1 ; assign 1:1 mixing ratio to tool 0

It starts in a proven basic mix mode with the control E axis and both motors move in sync!
Thank you!
Have a nice day!