Duet - Z Probe - Bed Leveling
Posted by grandleo75
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Duet - Z Probe - Bed Leveling August 13, 2015 11:20AM |
Registered: 8 years ago Posts: 7 |
Hello,
I am hoping to get some help with using a Inductive Proximity Switch type probe. It detects my aluminum build plate. Its not a variable sensor, its a switch type.
1) When coding the M558, do I use P4?
2) RepRapWiki Says, if using P4 to connect that to Extruder 0 endstop. If I do that, does that mean I can not use the probe to home Z axis?
Thanks,
Donnie
I am hoping to get some help with using a Inductive Proximity Switch type probe. It detects my aluminum build plate. Its not a variable sensor, its a switch type.
1) When coding the M558, do I use P4?
2) RepRapWiki Says, if using P4 to connect that to Extruder 0 endstop. If I do that, does that mean I can not use the probe to home Z axis?
Thanks,
Donnie
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Re: Duet - Z Probe - Bed Leveling August 13, 2015 11:30AM |
Registered: 10 years ago Posts: 14,672 |
Quote
grandleo75
Hello,
I am hoping to get some help with using a Inductive Proximity Switch type probe. It detects my aluminum build plate. Its not a variable sensor, its a switch type.
1) When coding the M558, do I use P4?
Yes. Take care not to feed more than 3.3V into the Duet E0 endstop connection.
Quote
grandleo75
2) RepRapWiki Says, if using P4 to connect that to Extruder 0 endstop. If I do that, does that mean I can not use the probe to home Z axis?
You can use it to home the Z axis. The M558 command sets which axes are homed using the Z probe. The command M558 P4 X0 Y0 Z1 means use the Z probe for homing the Z axis, but not X or Y. The actual Z homing will be done using a G30 command in homez.g and the Z homing section of homeall.g.
Edited 1 time(s). Last edit at 08/13/2015 11:30AM by dc42.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: Duet - Z Probe - Bed Leveling August 13, 2015 04:23PM |
Registered: 8 years ago Posts: 7 |
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Re: Duet - Z Probe - Bed Leveling August 14, 2015 04:18AM |
Registered: 10 years ago Posts: 14,672 |
Quote
grandleo75
Does that mean my homez.g would look something like this?
G90
G1 X20 Z5 F200
G30 Z-0.5 S
Here is a better example:
G91 G1 Z5 F200 G90 G1 X100 Y100 G30
First it lifts the head 5mm in case it is already below the trigger height. Then it moves to the centre of the bed (X=100 Y=100 in this example). Then it does the G30. When the probe triggers, it will stop and set the height to the value fo the Z parameter in the G31 command. See [reprap.org].
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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