Topics created by mattyd

@mattyd to set X0 Y0 to set the bottom left and positive movement to be correct you should do the following:

Set the motor directions using the M569 commands in config.g (or in your case, probably in config-drives.g) so that positive X is to the right and positive Y is away from you. Change the M574 commands to set the endstops to low-end (e.g. X1) instead of high end (e.g. X2). Change your homing files to move in the negative direction instead of the positive direction.

See https://docs.duet3d.com/en/User_manual/Machine_configuration/Configuration_cartesian. I am assuming that your machine is Cartesian, not CoreXY.

@mattyd it sounds to me that you might have the wrong movement directions or the wrong endstop configuration. I suggest you do the following:

Decide where you want X0 Y0 to be. Popular choices are the front left corner of the bed, or the centre of the bed. Decide which direction you want to be positive X and which direction should be positive Y. Usually positive X is to the right and positive Y is away from you. Other directions are possible but be sure to choose a right hand coordinate system. Adjust the motor directions in config.g to get positive X and Y movements in the desired direction. Establish whether your endstop switches are high end (at axis maximum) or low end (at axis minimum) and configure the endstops accordingly in the M574 commands in config.g.

@jay_s_uk

woot! I think we have got there - I took the card out, gave it a blow, re installed and and its no been recognised by the device manager!

@o_lampe said in tangential knife support? Newbie questions:

@droftarts said in tangential knife support? Newbie questions:

The oscillation motor appears to need a voltage signal (it may work with PWM, but may need a PWM to voltage converter) to control the speed

It probably isn't a motor but a simple solenoid/linear actuator? That would work with PWM when driven directly by Duet (heater port)

//edit I should've checked the product page. Why do they use a heavy stepper for such a simple task?

not a clue! though I think on their main desktop cncs they use two motors for each axis.