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Nope, it's the next thing to try I guess. Pity, I like the resolution of the 0,35mm..
I hope to see other ideas before I pull out one of my tungsten PCB micro-drills
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General Mendel Topics
Hi all,
I've built a Prusa with Megatronics, it has a 0.35mm printhead, uses 1,75mm filament trough a classic hinged extruder, only tried PLA for now.
I have had some perfect prints, especially small prints come out great. So I now my calibration must be ok.. I guess.
Bigger prints, though, are a pain, because after let's say an hour into a print, the heat separator is sure to clog up. The fil
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General Mendel Topics
exactly the same problem here..
while I have had very good prints for a while with the same hotend..
If I raise the extrusion temp, the clogging in the pfte tube gets worse.
Lower temp makes it mess some layers up.
??
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General Mendel Topics
brupje Wrote:
-------------------------------------------------------
> I have released an preliminary datasheet:
>
> megatronicsv2.pdf
file no longer available?
wish I had saved it after all
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Reprappers
Solved!
it was overcurrent on the steppers. they heat up and shut down, resulting in skipping steps.
I turned the pots down a little on the Pololu drivers, and it came out very nice!
Now I can concentrate on calibration!
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Printing
Hi,
My newly built Prusa with Megatronics and Pololu is giving me a hard time.
The first seconds of most prints go well, but then my X and Y axes begin to skip quite fast.
Same in pronterface.
I think I read somewhere this might be due to overcurrent? The steppers would protect themselves against overheating thus skipping G-code commands?
where do I look if I want to try if reducing the curre
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RAMPS Electronics
Hey,
I just finished building my first 3D printer, and tried some small prints in order to get the settings right / calibrate.
(It's a Prusa with Megatronics2 and Marlin, I use Slicer & Pronterface)
It has been quite a journey I must say, but enjoyed it every step of the way :-)
I took a small object from thingyverse, I think it was this one
In the picture you can find the results first
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Printing
SOLVED:
I took a close look at the schematics of the board and compared Marlin to it.
what it is now in Marlin:
/*
#define SHIFT_CLK 38
#define SHIFT_LD 42
#define SHIFT_OUT 40
#define SHIFT_EN 17
#define LCD_PINS_RS 16
#define LCD_PINS_ENABLE 17
#define LCD_PINS_D4 23
#define LCD_PINS_D5 25
#define LCD_PINS_D6 27
#define LCD_PINS_D7 29
*/
what it should be:
#define SHIFT_CLK
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Firmware - mainstream and related support
SUCCES!
Took another LCD, because It turned out it WAS a bad one.
Damn you, Murphy!
tried again with your firmware, still compilation error.
tried again with my setting, it works!
I am sooooo proud of me )
thanks all for your help!
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For Sale
sorry I can't agree..
I just downloaded this file again, same problem again.
by the way, I'm looking at the PDF schematics of the board and it suggests the pinouts are different than in Marlin:
what it is now:
/*
#define SHIFT_CLK 38
#define SHIFT_LD 42
#define SHIFT_OUT 40
#define SHIFT_EN 17
#define LCD_PINS_RS 16
#define LCD_PINS_ENABLE 17
#define LCD_PINS
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For Sale
I found where these errors come from.
As I thought the pins weren't defined (they were, but they were commented out //)
they can be found in pins. h
// #define SHIFT_CLK 38
// #define SHIFT_LD 42
// #define SHIFT_OUT 40
// #define SHIFT_EN 17
these were commented out, is you take the // away, the errors dissappear and you can compile.
but I suspect the pinout numbers are still wrong
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For Sale
yes,
I took the standard file you provided, with the only modification:
-define Ultra_lcd
but then it goes back to that "SHIFT_CLK" was not declared in this scope
I'm not very familiar with programming, but I think this has to do with buttons. I have just a 16x2 lcd without buttons..
OR this could be the defining of the pinouts for the LCD, but the pins numbers to the MEGA aren't declared?
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For Sale
it does display something if I do that, but only a line of black blocks (first line).
I'd think there's something wrong with the pins, but I checked over and over again...
Maybe something in Marlin, does someone know where these pins adresses are defined?
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For Sale
something is getting clearer to me.
I think the ULTRA_LCD is not the same as a generic 16x2 lcd without buttons.
I bet the variables above have something to do with those buttons, haven't they?
those are my settings now, but the problem remains
//LCD and SD support
#define ULTRA_LCD //general lcd support, also 16x2
//#define SDSUPPORT // Enable SD Card Support in Hardware Console
...
//#if
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Firmware - mainstream and related support
ok,
got that,
then I got some errors while compiling;
'SHIFT_CLK' was not declared in this scope. and other similar.
I read about similar error codes, and tried to fill in what I found by googling
when I put this at the beginning of the scope:
#define SHIFT_CLK 38
#define SHIFT_LD 42
#define SHIFT_OUT 40
#define SHIFT_EN 17
int8_t encoderDiff;
it will compile, but I think the var
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Firmware - mainstream and related support
I'm just finishing my Prusa with a relatively new megatronics 2 board and Marlin firmware.
It's my first 3D printer, so I'm fighting against a high learning curve.
But I think I almost got it, It moves allright (not calibrated yet), but I'm missing some pieces to finish it, so I'm awaiting delivery.
In the meanwhile, I was trying to hook up a 16x2 LCD display I had lying around in my ardui
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Firmware - mainstream and related support
It seems like I'm an early adopter :-)
I'm just finishing my Prusa with this board and Marlin firmware.
It's my first 3D printer, so I'm fighting against a high learning curve.
But I think I almost got it, It moves allright (not calibrated yet), but I'm missing some pieces to finish it, so I'm awaiting delivery.
In the meanwhile, I was trying to hook up a 16x2 LCD display I had lying around in
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For Sale
I've seen that setting.
Haven't tried it yet, because my extruder shouldnt go there at all.
I think I've solved it partially by AGAIN switching the steppers directions, and also changing the endstop-logic. now the extruder goes in the correct direction to start.
I also tinkered with the bed_centre, and it seems like it is better now.
But still!
I tried printing a small object, still without ac
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Firmware - mainstream and related support
I meant burning out my stepper drivers (pololu MD09B actually)
But, I found out by closely looking at the specsheet. it mentions the pinout (but it's not on the silkscreen.)
I took a gamble, connected it, and thankyoujezus no blue smoke
I'm currently tying to figure out what the correct settings are in slicer and pronterface, but I'll get there :-)
thanks!
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General
Hey,
I'm building a Prusa with Megatronics 2 with Marlin firmware.
I use Slicer and Pronterface.
I have set a lot of variables in Slicer and in the Firmware, but I must be overlooking something?
I think I'm almost there, but I have an issue.
In pronterface, when I home the extruder, the end-stops do what they have to do, everything seems to go well.
(I had to inverse the direction of all the
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Firmware - mainstream and related support
Hi Guys,
short story:
Read a lot about 3D printing, have some degree of experience with electronics, Arduino and physics, and thought I'd take a shot at it.
I compared and compared again, and bought a DIY kit from reprapworld.com. Along with a Megatronics V2.0 all-in-one board.
I spent about 3 days at building the raw frame, following the very good instructional videos on the wiki.
This worke
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Controllers
-- sorry - wrong subject! --
Hi Guys,
short story:
Read a lot about 3D printing, have some degree of experience with electronics, Arduino and physics, and thought I'd take a shot at it.
I compared and compared again, and bought a DIY kit from reprapworld.com. Along with a Megatronics V2.0 all-in-one board.
I spent about 3 days at building the raw frame, following the very good instructional
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General