Many problems (Homing, Z-Axis...)

Gummix

Hello,
I have the Duet Wifi so far set up and wired unfortunately it does not work as intended.
First to my printer:
Its a Core XY with double Z-axis.
X,Y,Z Motors are Wantai 42BYGHW811. (On the Z-axis I use 2 motors which are connected to both plugs of the board so they are serially connected (I Think).
Extruder-Motors are 17HS16-2004S1. (But there's only one in use at the moment.)

Board:
Duet 2 Wifi
Firmwarename: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Elektronik: Duet WiFi 1.02 or later
Firmware Version: 2.02(RTOS) (2018-12-24b1)
WiFi Server Version: 1.22
Web Interface Version: 1.22.6
0_1550421682898_config.g

I have set the endstops and they seem to work properly so far.
Unfortunately the axles can't be homed i all time get this error:
G28 X: Error: Homing failed
The axes cannot be moved either

So I tested the test scripts in the UI. The motors are moving.
At the Z-axis the motors rotate only briefly, then stop and start screeching.

I hope someone has time and want to make this work with me.

Greetings

deckingman

@gummix Well the first thing that leaps out at me is that you say it's a CoreXY but the config.g you've posted seems to be for a Delta.

Gummix

Well....
I dont know why, i was sure i made a new one with core XY...
I will make an other one and test it again.

Thanks

Gummix

Ok i will make it with the Beta tool.
But what are the best axes settings for the Wantai?
My opinion:
Microstepping: x16
Stepps per mm (depends on the used hardware)
Max Speed Change?
Max Speed?
Acceleration?
Motor Current (mA)? (I can not find the formula right now)

Thanks

Phaedrux

@gummix said in Many problems (Homing, Z-Axis...):

Microstepping: x16
Stepps per mm (depends on the used hardware)
Max Speed Change?
Max Speed?
Acceleration?
Motor Current (mA)? (I can not find the formula right now)

x16 microstepping with interpolation
Max speed change, aka Jerk, start at 600mm/min or 10mm/s
Max speed should be what you intend to use for your travel moves (18000mm/min or 300mm/s is probably a good max)
Accel, start with 6000mm/s^2 for the max. You may want to also configure M204 to set separate accel for print moves and travel moves.
For motor currents, target 70-85% of the rated max for the motor.

Gummix

Okay, I've got it now.
However directly a new problem, I have constant connection breakdowns....

Failed to connect
The connection between the browser and your machine has been interrupted.
Reason: Request Timeout
Please wait while a new connection is being established...

I go to the UI website home the axes and making 2-3 movements in the X or Y direction and the connection breaks off....
It can't reconnect either. Then it only helps to pull the plug

dc42

See https://duet3d.dozuki.com/Wiki/WiFi_disconnections_and_AJAX_timeout_errors.

Gummix

U are right.

Thanks