So I am looking at the steps to manually probe the bed using g-code and it says: To probe the bed using GCode: Use G29 to move to the first point for Z adjustment. Adjust Z so a piece of paper can just pass under the nozzle. Use G29 to save the Z value and move to the next point. How does one Adjust z?by Rhartl - Firmware - Marlin
So the z offset is set to some value larger/smaller than +or-20? Is the offset value set in eprom?by Rhartl - Firmware - Marlin
Why am I getting this error when I try to use Configuration -> Advanced settings -> Set Home Offsets? I am running Marlin 2.0.5.3 on a Monoprice Mini V1 that has been modified to run with a Ranps 1.6 board.by Rhartl - Firmware - Marlin
So I have a Monoprice mini v1 that I have replaced the board with ramps 1.6 an arduino processor, and lcd display. I have loaded marlin 1.1.9. The newest modification has been to try to implement auto bed leveling by adding an inductive sensor and connecting it to the z endstop ( exchanging it for the switch). To this point it looks like G29 S1 is working as expected but when it tests for the 3rdby Rhartl - Firmware - Marlin
So let me explain whats going on now that I have settled on the M206 command to set the offset value. After leveling the bed, I used Pronterface to send commands to the printer. Positive values only push the nozzle farther into the plate, negative values work. I test each setting for offset with an abbreviated gcode file that has the initial set of instructions for Cura files. It lays down a lineby Rhartl - Firmware - Marlin
So correct me if I am wrong here, but I see the Offset as a way to move the entire coordinate system used to position the extruder. So if I set the offset to z = n, when gcode positions the extruder at z=0 it is in reality at z = n. Is that right?by Rhartl - Firmware - Marlin
No, when I home the print head the interval between the bed and the nozzle is about the thickness of printer paper. From that position if I attempt a print it will dig into the tape. Should I just not pay any attention to the values of z on the info screen? And keep feeding M206 values until things start to work?by Rhartl - Firmware - Marlin
Well I am old too, and I understand. Thank you for the extended explanation of those values in firmware. I am using version 1.1.9 of Marlin and the odd thing is thatI do not seem to have the menu items people refer to when they suggest that I use the LCD. So I’ve given up on that. Focusing using M206 to set the offset, I get some very strange behavior from that command. If I change value of z oby Rhartl - Firmware - Marlin
Okay. But well I think I was misled at the beginning of this saga. Here is a quote from an earlier post when I was asking how to set the z offset using Marlin: “From Marlin Firmware you can set Z-Offset #define Z_PROBE_OFFSET_FROM_EXTRUDER -0.5 // Z offset: -below +above ” I gather this is not correct. When you say: “This is the horizontal offset. //# define HOTEND_OFFSET_Z {0.0, 0.00} // (mmby Rhartl - Firmware - Marlin
Don’t have a probe. So must be an end stop home.by Rhartl - Firmware - Marlin
So I have followed the procedure from MMclure above. Because I cannot use M851 I use M206 to set the offset to 0. The result is an offset of -0.1. I applied that to the Z_PROBE_OFFSET_FROM_EXTRUDER and recompiled and loaded that to my machine. First print was perfect. Second print digs into the build plate. Is there any way of checking the value of the offset from maybe Pronterface?by Rhartl - Firmware - Marlin
Thanks for the tip. I will do that from now on. I have been faked out again. When I compile and load Marlin the first print is great. Any subsequent prints the problem returns. Thoughts?by Rhartl - Firmware - Marlin
So with a few tweaks to the above procedure I am printing again. Thank you to all for you kind indulgence.by Rhartl - Firmware - Marlin
This is everything I can remember editing.by Rhartl - Firmware - Marlin
1.1.9. When I get back to the computer I have Arduino and the configuration files on I will send you the configuration files in another post. I should say that after messing around with it for several hours over the last two days. I went into the configuration file and eliminated EEPROM. It now works pretty well. Must be something there that is fouling things up.by Rhartl - Firmware - Marlin
So here is the deal. As far as I can tell there is nothing in the menus on the LCD that support adjusting the offsets. There is an item under prepare that says Set offsets. If I try that before homing it tells me I need to punch home. After that it says “Offsets saved”, with no opportunity to change the offsets. After starting a print if I press this selection I get “Err: Too far!”. I’m kind of sby Rhartl - Firmware - Marlin
Well working some more with the initial gcode I find this: after leveling the bed using an index card as a spacer when I execute a G1 command moving the print head around on the build plate the head clears fine and the tape on the build plate is undamaged. When an extruder command is added to the G1 statement the nozzle hits the build plate. I am thinking this a hardware problem, but I am not surby Rhartl - Firmware - Marlin
I am not so sure I can eliminate offsets from Marlin. Is there a g code command that will tell me what the offsets are?by Rhartl - Firmware - Marlin
Describe what you mean by “proper mechanical adjustments”.by Rhartl - Firmware - Marlin
So talked to Monoprice and they say that the mini has no Z probe. In which case how does manipulating the value of Z_PROBE_OFFSET_FROM_EXTRUDER change the height of the extruder above the bed? I am not trying to be sarcastic, I just would like to know how the firmware deal with the situation when there is no Z probe.by Rhartl - Firmware - Marlin
So I am told by Monoprice that there is no Z Probe on the Mini V1. I am guessing that is the reason for the absence of those commands. Is there some other mechanism used in the software for that machine to derive the information ordinarily provided by the z probe?by Rhartl - Firmware - Marlin
I have a Monoprice Mini v1 and have replaced the main board with a RAMPS 1.4 board and am running Marlin 1.1.xbf. I am having difficulty setting z offset and it would appear that I don’t have that selection on the LCD menu under control/motion. And using Pronterface to execute a M851 command it does not recognize the command. Is there some kind of flag that I set in the configuration files that mby Rhartl - Firmware - Marlin
This is the modification I made for the display problem I had: Its just problem of your display beeing to slow (lik mine), i added the ST7920_Delay setting, since that time its fine #define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER #define ST7920_DELAY_1 DELAY_NS(63) #define ST7920_DELAY_2 DELAY_NS(63) #define ST7920_DELAY_3 DELAY_NS(63) // this is the defaults for a 16mhz processor (ie a meby Rhartl - Firmware - Marlin
I’ve downloaded version1.1.9 and version 2.0.5. I haven’t yet gone through the configuration files to set them up for my hardware, but I will if you think that will help. I should mention that I had problems with timing in relation to LCD with 1.1.x bf. People on this forum had me do some modifications of the code to make the LCD work. Might have affected the menus??by Rhartl - Firmware - Marlin
I am having trouble attaching a photo of my menu, but these are the options under motion: Velocity Acceleration Jerk Steps/mm No other options. No Probe Z Offset.by Rhartl - Firmware - Marlin
So my auto homing leaves the extruder at x=0, y=0 , z=0. Manually centering the extruder in the center of the build plate and following instructions I finish with an offset of 0.3. My control menu looks like the attached picture. There does not seem to be a selection for Z Offset. I am using Marlin Version Bugfix 1.1.x.by Rhartl - Firmware - Marlin
I’m baaack. Sorry but I continue to have difficulty with this. It appears to me that there is no selection under tune to change the offsets. Changing the value of Z_PROBE_OFFSET_FROM_EXTRUDER I find negative values does not change things. Positive values Improve the issue but once I get to 3 I get tearing of the tape and no extrusion. Checking immediately after demonstrates normal extrusion. Iby Rhartl - Firmware - Marlin
So this is what I get when I try to use M851: echo:Unknown command: "M851 Z-1.49"by Rhartl - Firmware - Marlin
Okay so now I have managed to manipulate the Z offset, but strange things are happening. When I use the M206 command to set the Z offset to -1.49 the echo in Pronterface shows that it is set to that. So I save it to EPROM with the M500 command. What I am seeing on the LCD Info Screen is that the Z is set to -2.98. Also much of the X and Y axies are screwed up. Help...by Rhartl - Firmware - Marlin