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my speed is double what Marlin sets it at. The faster tap produces a better signal.
by
ruggb
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General
that is the problem with changes.
if u are touching your board and it triggers, I guess the circuit is working, assuming your touch isn't hitting the circuits.
What happens when you touch the nozzle?
If it doesn't work or takes too much of a touch then it sounds like your mechanism is a little too tight.
If it responds with a reasonable touch, the homing speed might be a little too slow.
I had a
by
ruggb
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General
just quoting what was reported.
by
ruggb
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General
Marlin does not operate as you described for Repetier.
There is also a problem with the way Repetier-Host handles an offset with Marlin.
There is also 2.1.4 that was just released. I downloaded it 10 min ago.
It may have fixed the issue that I submitted. I was told it was on his todo list.
So if you update, you may have to start this scenario all over again.
M420 is ABL and produces a matrix tha
by
ruggb
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General
deviation is a measure of the probe performance/consistency. It is probed in one place. My probe is the nozzle itself and I think it retracts 10mm but Not sure exactly. I am not in front of it to check. probing speed also has an effect and I am not sure what mine is either, but it is not as slow as the default - actually probably 2x.
by
ruggb
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General
I am not familiar with delta machines, but I don't believe an offset comes into pay during a leveling procedure or testing deviation on a delta any different than a CoreXY or Cartesian.
Deviation tests the consistence of the probe response. IE, it probes and sets that to 0 then probes repeatedly and compares all the results to the first one and calculates the deviation from those numbers.IE, how
by
ruggb
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General
Clif
the original post asked if anyone else had the same issue because I am trying to understand why I am having it and what causes it.
It is an occupational hazard of being an engineer.
I know how to handle it.
by
ruggb
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Printing
mine is a corexy and it is solid as a rock.
The MIC6 plate is wonderful and all I need to do is 3 point leveling.
But the best part is the piezo endstop. It serves as a probe also, but I only used that once to level the plate.
As I said it is about offset, not bed calibration or 1st LH.
I worked out my offset to be 0.23mm. Printing PLA works fine at that offset.
when I switch to ABS I have to ad
by
ruggb
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Printing
Clif - this has to do with offset == initial bed clearance not layer height.
Though LH probably affect the offset, everything else is the same except offset.
I am printing with 0.15 LH and 0.3 1st LH, but a smooth 1st layer for PLA == 0.23 offset and ABS == 0.33 offset.
205/200 for PLA and 245/240 for ABS
by
ruggb
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Printing
It seems that my printer likes to have a different offset for PLA, ABS, PETG filaments.
I have the Marlin offset set at 0.23 for PLA. Seems to work good.
When I put ABS in, I get a rough first layer so I back it out another 0.10
I don't remember what I did for PETG as it has been a while.
Do other people experience this, or is it my imagination, or is it my printer?
If this is so, what causes t
by
ruggb
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Printing
let me see if I figured this one out
The clamp mounts to the Chimera with 3 flat head screws
insert Piezo
screw both assy together with 4 flat head screws
mount the whole assy to the carriage with 4 screws thru carriage tapping into screw top
by
ruggb
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General
Z_PROBE_ON_HIGH is set to 1 in the f/w I just downloaded.
Yours should be set to 0
It is a config option so it is only incorrect if you did not change it.
by
ruggb
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General
@codebuster
I understand you are using Repetier firmware, is that correct? I looked at it and see that, to me, it is rather confusing as to how to set the various endstop #defines.
The Piezo is negative logic - goes to 0V when triggered. Your mechanical Z endstop should be the same logic. If so, at this point, I would change over to the mechanical Z endstop and verify that it works properly as se
by
ruggb
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General
It looks like a V2. I got it from AliExpress - China knockoff. It has 2 pots and one green LED which hangs off the output that drives the Ramps and Arduino. It flashes off when triggered. The Piezos I bought separately and I designed and printed the carriage holder. The store bought ones would not mount on my home built CoreXY printer.
If your piezo to PCB wires are short and your PCB functions
by
ruggb
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General
Here is the way mine is acting, And it is working perfectly as far as homing and probing is concerned.
My Vcc = 4.97 and the Vout = 3.69 at the piezo board.
When I scope it, I get varying pulse outputs even multiple outputs and they vary in pulse width VERY significantly, from a few ms to almost 500ms
If I hold pressure on the piezo I can get it to trigger almost constantly, like it is reading m
by
ruggb
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General
anything change?
piezos like to be moved rapidly.
does tapping on it during a Z home stop it?
what is your homing speed?
by
ruggb
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General
the piezo disc itself produces pulses when it moves. No movement = no pulses. The board produces an output that is an elongated version of the input, but is still a pulse. The blue flickering is indicating the piezo is working and there is an output pulse. My board does not have a red LED so I can't tell you about that and none of the instructions say anything about an adjustment for it.
I think
by
ruggb
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General
so you are using the mech endstop as backup. So that makes sense. For some reason it sounded like you were saying the mech endstop was triggering first. I have crashed mine but it was just until I got things right. It is very reliable now. At times it does trigger early - if I touch it at all.
by
ruggb
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General
congrats, feels good doesn't it.
I still can't figure out what you are doing, but in Marlin V2 there is code for 3 endstops.
Total mystery to me...........
by
ruggb
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General
Sorry, I am still confused.
My piezo nozzle probe is also my Z endstop and functions perfectly. I have no other Z endstop. I only have one Z motor.
Reading the above and the Marlin bug report indicated to me that having a mechanical endstop and a nozzle probe/endstop is not going to work. There is repeated verbage by thinkyhead about disabling the mechanical endstop.
If what you want is the sam
by
ruggb
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General
"Z_PROBE_LOW_POINT unfortunately doesn't work for whatever reason."
I am confused, but that is SOP.
My interpretation is that the above will allow Z to go x distance beyond where Z_PROBE triggers.
It sounds like you want to go x distance beyond where Z_MIN triggers.
I can understand 2 endstops being used with 2 motors to enable racking adjustment but what other benefit does 2 endstops have?
An
by
ruggb
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General
thanks, I have no flex couplings, just 1 stepper, 4 pulleys, 1 idler, 1 belt, 3 screws, and 3 nuts.
It only affects the retraction function so the effect on the print is pretty minimal.
I have another belt coming, I guess I may as well order more pulleys too. I don't know how the idler can create that but I guess I will pull that apart and have a closer look. It is pretty difficult to determine w
by
ruggb
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CoreXY Machines
I think this is a Repetier issue:
There is a difference between a STEP and a GOTO when dealing with Zhome+offset.
Looks like a Repetier issue: => it is not handling a Z offset properly.
I have a Zoffset = 0.05 - with Marlin V2 and latest bug fix. = Repetier Host 2.13
Repetier knows it is at -0.05 after a home
Clicking a STEP in Repetier gives inconsistent results when Z=home with an offset
by
ruggb
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Repetier
My printer is generally running good, but I noticed today in trying to set my Z0 position that there is some backlash in my Z positioning and maybe an inconsistency in the way Marlin handles the Z offset. The Z mechanism is 3 lead screws driven with one stepper with one idler for tensioning. The belt was loose when I started this but is now tight. The results did not change. BTW, my Z endstop is
by
ruggb
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CoreXY Machines
I have a coreXY on ver 2 bugfix 870757a and I am having a problem with babystepping.
It is enabled, as is doubleclick to access. It does not go into the babystep menu on doubleclick.
babystep_xy is not enabled.
It has worked in the past and I do not know when it stopped working.
I upgraded my printer to a piezo probe/endstop a while back and have not used it since then.
I do not remember what the
by
ruggb
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Firmware - Marlin
I once had an issue with fan noise coupled to my thermistor line that really messed up temp control. I would caution against having that line even one ground line over. Better to put both fan controls next to one another and separate T more.
by
ruggb
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General
mine is totally different so you gotta do what you gotta do.
This is what mine looks like. The level screws are right above the lead screws
and this is my piezo mount
by
ruggb
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General
Adjustment springs on each corner of the bed never made any sense to me. I started out with that because that is how someone designed it. But all the 4th screw does is to distort the frame. Think about it. Three screws, corner, corner, center = One screw sets the reference, the other sets an X tilt, the other sets a Y tilt. If you have a 4th one, does it bend the 1/4" plate? No, it just loosens 2
by
ruggb
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General
I am not familiar with your machine, but with the hotend fan and the whole gantry moving for a Z home, I see why you have problems. If the HE fan is running, try stopping it when homing - though I have no problem with mine, but my gantry is stopped since the bed moves. Initially, the movement of my gantry during XY home triggered mine even though it didn't start until XY was finished. That is why
by
ruggb
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General
what he said......I did have to add a delay once in Marlin for when I did a home all, but it seems like Marlin did something that eliminated that issue - at least in Ver 2. I can tell you how to do that or maybe just tweaking the sensitivity slightly will fix it.
by
ruggb
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General