Rat Rig Community [Unofficial]•5mo ago

Configuration changes needed for a 150x150 bed

Quite some time ago I (partially) designed and build what is essentially a Vcore 3.1 scaled down using the WaltMech M1 as a base, changed to include a ratrig toolhead and 3.1 arms and using whatever specific spare parts I had. Now comes the firmware. My plan was to take a Vcore 3.1 200 profile and include the changes I need in a overrides.cfg. What are all the things I need to include here to ensure everything will work fine? Thusfar my overrides and printer cfg's look like this:

overrides.txt

printer.txt

Solution:

She's working and not crashing into the sides, thanks for the help mate!

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8 Replies

DaanBoxOP•5mo ago

Should anyone wanna know what it looks like:

miklschmidt•5mo ago

Nice! So all you'd need to change is position_max in [stepper_x|y|z] as well as the mesh_max coordinates in [bed_mesh] and the pivot points and probe points in [z_tilt]. Check the printers/v-core-3/200.cfg include to see what's needed 🙂

DaanBoxOP•5mo ago

So just the values in there should be all?

miklschmidt•5mo ago

yep, unless you have some travel outside your print volume (ie, below 0 or above 150). You'd want to put that into:

[gcode_macro RatOS]
variable_bed_margin_x: [10, 20] # -10 and 170 full range
variable_bed_margin_y: [15, 15] # -15 and 165 full range

[gcode_macro RatOS]
variable_bed_margin_x: [10, 20] # -10 and 170 full range
variable_bed_margin_y: [15, 15] # -15 and 165 full range

But it seems like you've got everything, except you need to indent the coordinates in your z_tilt config.

DaanBoxOP•5mo ago

Motion is quite limited to the bed as-is. In the pursuit of small the nozzle can hardly if at all reach outside of the bed

miklschmidt•5mo ago

then just set

[gcode_macro RatOS]
variable_bed_margin_x: [0, 0]
variable_bed_margin_y: [0, 0]

[gcode_macro RatOS]
variable_bed_margin_x: [0, 0]
variable_bed_margin_y: [0, 0]

And you should be all good 🙂

DaanBoxOP•5mo ago

Thanks for the help altough I am not sure what exactly you with "indent the coordinates", my poor english aside isnt that already the case here?

Solution

DaanBox•5mo ago

She's working and not crashing into the sides, thanks for the help mate!

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Programming

Configuration changes needed for a 150x150 bed