Hello,
after update to this Version i got three times a bad print because of uncaused error "attempting print with no tool selected" while printing last 20%.
After fallback to previous version this problem disappears.
My configuration:
Cartesian printer, Duet 2 wifi + due5x
BR,
Thilo
Hello bearer,
i have misinterpreted that. Sorry.
Thanks,
BR
Thilo
Hello bearer,
its as build like this one:
https://www.youtube.com/watch?v=FiTmRHkiEUg
The real x range is 270 mm but the bed is 214 mm - means that a travel of 28 mm on each side over the bed is possible. it would be good to deal with negative positions because of easier calculations about bed, nozzle, toolhead and probe...
think something got lost in translation here. M208 x-20 is not a configuration i would advice, presumaby it would set the maximum x value
to -20 and the minimum x value to 0, effectively mirroring the axis, or throw an error, not sure which.
Thats confusing me again. For endstop definition there is no offset configuration possible. If M208 X-28 allows negative travelling - means that travel 28 mm over endstop signaling? I dont think so...
I have had the hope that M208 defines the physical size of all axes to adjust origin base point 0,0,0 of the bed corner.
But this implies that print move from x-homing (-28) position to x=20 needs to travel 48 mm and a G1 Move to 0,0,0 is a physical location fo X+28 away from the homing switch.
In this example...
https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter
... this command was mentioned: "M208 X-8 Y0 Z-0.5 S1 ; set axis minima and low homing switch positions (adjust to make X=0 and Y=0 the edges of the bed)"
It's my idea that M208 would be used always to calculate absolute positions all times - isnt't it?
BR,
Thilo
Hello,
seems some things are more clear now. I have a printer with two double tools in parking position left and right.
resuming your explanations i have always to deal with nozzle and bed and probe while tool change.
if the toolhead is alone then i need to create a virtual nozzle having the probe point as origin to make clear z-mesh measurement map.
if i took bed origin to 0,0 and send M208 x-20 then the slic3r should have same positions isn't it?
thank you for explanations.
BR,
Thilo
Hello bearer,
thank you for your interest.
i have often read every of your mentioned G-Code articles. But i found there is room for questions.
About vz0:
if my endstop resides 20mm left of the bed then i forced to interpret ever X coordinate to add 20 mm reaching x=0 of the bed?
And also i need to set M208 to xmin = - 20 right?
About vp0:
Help me to clarify:
That means - on tool change i forced to set new offset of probe, related to the new tool?
Whats about movements without tools?
About G1 moves (with absolute positioning):
Almost related from endstops positive? G1 X=20 means X=0 on the Bed?
About mesh grid:
Mesh grid also measured from endstops origin - are all coords measured from endstops origin?
Whats about the tool and the probe offset while z-map generation?
In fact on my printer i can deselect all tools an let run a mesh grid probe. if always the probe is related to a tool and i have none whats about measurements?
In fact the probe is fix mounted and can measure the bed.
About slic3r:
I have to add the bed offset in mind?
BR,
Thilo
Hello,
i got always in confusion with handling different G-Codes to setup my cartesian printer. I need to know the most important primitive G-Code to start with.
vz0: (virtual zero 0,0,0)
the virtual point 0,0 to define the front left corner of my print bed in relation to min, max of my X travel and y travel limited by endswitch
(Is that M208?)
vp0: virtual probe position
offset from vp0. (Is there an appropriate command?)
vt0, vt1,vt2: virtual offset from vp0 for Nozzle of tools.
Somtimes the explanation of G31 is the offset between probe and nozzle. Bad - because of which nozzle?
https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter (Z-Probe section)
i am confused with M208, G10, G1 G30 commands.
Is M208 the most primitive definition?
There are many unclear points:
Example... Mesh grid:
Is the definition for X- and Y-position of the probe vp0 or the bed pos vz0 or endswitch 0,0?
interaction with slic3r:
in slic3r i can set up the bed size size but the front left corner is defined as 0,0 (my vp0). But i see offsets to my bed. is this the M208 - Offset?
thank you in Advance,
BR,
Thilo
Hello,
same problems on my printer.
After Update to 2.03 and Panelue 1.23 i got a lot of checksum errors. I didnt have seen this before (2.0 beta) with 115200 Baud.
Reducing raudrate to 9600 reduces the amout of errors a bit but not much.
Software <= 2.0 beta have never shown such checksum errors.
The problem with "attemepting to extrude with no tool selected" during print i have seen on time destroying a 13 hours print.
BR,
Thilo