Re: Migbot Prusa i3 Unofficial Support Thread January 28, 2016 11:12PM |
Registered: 9 years ago Posts: 26 |
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Wes78
Do you have another PC or laptop you can try it on?
Do you get the sound from your pc, When you plug it in, like you do with other devices?
It going from com3. To com4. Did you change what USB you were plugged in to?
With the printer powered off. (Unplugged from 110) When you plug in via USB. Dose the ldc light up?
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 04:50AM |
Registered: 9 years ago Posts: 269 |
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IBaz
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Wes78
Do you have another PC or laptop you can try it on?
Do you get the sound from your pc, When you plug it in, like you do with other devices?
It going from com3. To com4. Did you change what USB you were plugged in to?
With the printer powered off. (Unplugged from 110) When you plug in via USB. Dose the ldc light up?
I have tried this on two different computers having exactly the same results.
Yes it gives the USB connect sound.
Exactly the same USB port on both PC's.
Yes the LCD lights up when connected to USB and power off (240V over here )
I have ordered another board as it's the only thing I can think of having tried everything else.
If that doesn't work I have no idea what to do.
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 09:32AM |
Registered: 9 years ago Posts: 103 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 11:07AM |
Registered: 8 years ago Posts: 38 |
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Ax
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AccidentalWisdom
So, I've got my printer up and running (sort of), got my first two (semi)successful test prints out, along with a few failures.Printed this thing. Even the two that printed have the same problem as those that didn't - the piece is not adhering to the bed well. Most of the prints get to a few layers and then were pulled from position, dragged around with the nozzle
On the two that printed fully, the adhesion was just enough to withstand the printing, but the bottom of the piece is terrible and the edges all the way up are jagged (like a spinal cord effect), while the sides are actually quite impressively nice. When the print was done, I was able to pull it off the bed immediately with my fingers with almost no resistance.
Using Cura, all layers were at .2 mm. Used hairspray for one and Elmer's glue stick on the other, both seemed to work equally well. Initial layer speed at 15, then at 30 for other layers. Fan speed at 60 (weirdly, my nozzle fan doesn't seem to trigger until I manually spin it once with a finger).
I think the real problem is that the initial layer is printing too high. At .2 mm as the filament comes out it is suspended in the air and pulled down by gravity. When the nozzle turns a corner the filament gets dragged in that direction before laying on the bed, so instead of all 90 degree angle I'm getting some 75 degree angles, creating just a mess on the first couple layers. After the first couple layers, when there is a bed of PLA to stick to, the rest of the layers print nicely (aside from the spinal cord effect on the edges).
Question 1: Should I be setting the initial layer so that the filament is actually slightly squishing against the bed?
Question 2: When my printer begins printing, it does not print in the center of the bed (even though in Cura the item is centered). Both the X and Y Axises seem to think the bed size if 5" x 5", instead of 8" x 8". Last I looked at the firmware I believe I saw some offset lines, I understand that I can change those. Is that all I need to do on this - just try to find the perfect combination of offsets to tell it where center is?
Question 3: I want an auto-leveler! I have the Migbot Prusa i3 (obviously, since I am here, haha). Can I get suggestions on the best proximity sensor to use (I've seen two types: this and that)? What about Inductive vs Non-Inductive? And also, for the type you suggest, can you provide a link or STL for a mount that would work on my Migbot? I searched Thingiverse a bit but didn't find any mounts that seemed to look like they would fit.
1) yup, Squishy is good.. Think Dory from Finding Nemo
2) That'll be my firmware, which I assume you're still using, I need to sort the small bed version for someone anyways so give me a day or so and I'll send you the config.h file.
3) Get this one. It's what comes with the auto level kit. The mount is on the firmware repo here, I'm assuming you're on the MK8 so that mount'll be the right one. However, if you want the round one, check Tom's Guide on auto levelling, that'll tell you how to set it up.
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 11:10AM |
Registered: 9 years ago Posts: 103 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 11:12AM |
Registered: 9 years ago Posts: 103 |
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AccidentalWisdom
Follow-up - If I offset the Z Axis by -.2, and then always print my Initial Layer at .3, would that be good? I hear a lot of people keep the Z Axis unlocked and manually adjust the rods at the beginning of the print.
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 12:26PM |
Registered: 8 years ago Posts: 38 |
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Wes78
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AccidentalWisdom
Follow-up - If I offset the Z Axis by -.2, and then always print my Initial Layer at .3, would that be good? I hear a lot of people keep the Z Axis unlocked and manually adjust the rods at the beginning of the print.
There is a setting in cura that you can tell it how thick you want your first layer
using that set your hotend tip off the bed by the thickness of a sheet of paper
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 12:36PM |
Registered: 9 years ago Posts: 103 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 12:58PM |
Registered: 8 years ago Posts: 38 |
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Wes78
the Initial Layer Thickness needs to be between 70-80 % of the other layers, I.e .3 layers Initial Layer between .210-.250
the diameter of the filament is set buy the diameter of your tip your using. adding more or less flow% can change that. but its meant to be .4mm or what ever size tip your using
it sounds to me that if you send you z to Z0.0 it isnt with in the .004" (.1mm) of an inch from the bed like it needs to be
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 01:00PM |
Registered: 9 years ago Posts: 103 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 03:01PM |
Registered: 9 years ago Posts: 269 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 04:48PM |
Registered: 8 years ago Posts: 38 |
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 06:42PM |
Registered: 9 years ago Posts: 111 |
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AccidentalWisdom
Anybody have a good source for the screws, washers and nuts for the Migbot? Looking for the Hex type Socket Cap head in silver color, if possible. I found www.mscdirect.com, but can't find 8 or 20 mm M5s on there.
Looking for at least the following:
M5 screws in 8, 12, 16 and 20 mm
M5 nut
M5 washer
In fact, anybody have a list of all the components that came with the original? I received my kit in an already opened box that was sitting in a friend's workspace for months - missing all the packing, everything was loose.
Re: Migbot Prusa i3 Unofficial Support Thread January 29, 2016 10:02PM |
Registered: 9 years ago Posts: 112 |
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 02:55AM |
Registered: 8 years ago Posts: 1 |
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 03:56AM |
Registered: 9 years ago Posts: 112 |
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 06:42AM |
Registered: 9 years ago Posts: 269 |
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cgriff
Hello all. I have had my Electron 3D Sixth Generation Prusa i3 with Auto Leveling and the large bed option for about 3 weeks. It took me some time to get it together and I did run into several of the problems described in this forum, but nothing was a real show stopper. They sent me the wrong lenght smooth rods and threaded rod for the large bed kit as they were 20mm short of 400mm as called out in the intructions. I was able to get it together and get it working and made a couple of really nice prints right off the bat. I got a little over jealous and tried to print a large piece for a buddy of mine who is building a robot. The print took about 8 hours and I ran it overnight. When I got up in the morning it was about half there and noodles everywhere on one side. The filament had bound up on the overhead mount I had made and long story short burned up the extruder motor. Moral of the story, DON"T LEAVE YOUR PRINTER UNATTENDED!!! Hard lesson to learn.
I went down today to sparkfun and picked up 5 new steppers (https://www.sparkfun.com/products/10846) they are .9 degree 400 steps/revolution and I have them installed and they seem to fit and I hope they will be a good upgrade from the ones that came with the printer. I have been reading up on how to set them up and wanted to get the firmware flashed to support them, but I am to much of a newb to really get what the settings should be. I was trying to reverse engineer what has been posted in the standard large bed config.h files from Ax, but the numbers don't seem to match up. Should I just double the values for the DEFAULT_AXIS_STEPS_PER_UNIT for all axis or is there more to it than that?
Any help would be appreciated. And thanks in advance. I woudn't have gotten as far as I have without all the great help and advice on thsi forum and really appreciate all of your efforts.
#define DEFAULT_AXIS_STEPS_PER_UNIT {160,160,796.539914,110.367693597}
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 10:29AM |
Registered: 9 years ago Posts: 269 |
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Ax
Ok guys, I've just worked through the firmware a little and produced 4 Configuration.h files based on my version of the firmware with my tweaks. Note: I don't have the 210x210 bed, so I can't test it, although it should work, going by 2 people I know of using a quickly hacked together version of my Config for the 210x210. You'll need the version of Marlin that's in the folder and the respective Configuration.h. You'll need to PID tune and Calibrate the extruder, but asides from that you should be good to go. Without further ado, here's the link: [www.dropbox.com]
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 04:33PM |
Registered: 8 years ago Posts: 38 |
Re: Migbot Prusa i3 Unofficial Support Thread January 30, 2016 07:13PM |
Registered: 9 years ago Posts: 31 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:29AM |
Registered: 9 years ago Posts: 269 |
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Canadian Geek
I've got what may be a really stupid question but here goes. If you use a glass plate, does it have to be placed against the heating plate or can, (or should) there be a gap? There, I've done it. I've posted my stupid question.
Jeff
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 06:11AM |
Registered: 8 years ago Posts: 10 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 11:22AM |
Registered: 9 years ago Posts: 269 |
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insanegr
hi all
i am really new in 3d printing and this 36 page thread was helpful to understand a lot of things thanks too the knowledge of some members , who are willing to help too.
i have bought one electron - migbot 3d printer(standard-bed without auto bed levelling as i knew i could do it paying less) from the known on-line store with the known quality and customer support.
before buying the printer i contacted them and they replied me back in the day and when i got my printer and opened the box i saw that printed parts were not black but coloured and bad printed(wrapped) and one part was cracked ,i send them a mail only mentioning the cracked part and not the coloured and wrapped pieces and didn't get any response from them as usually.
as i didn't get any response for the cracked part i glued it and decided to assembly my printer so i connected my sd card on my pc and nothing was there. emailed them again but got a response a week later.so waiting for the response i had to find more information about this printer so i found this forum.
got my printer assembled tested bed and hot end was heating homed all axis worked all fine levelled the bed with the nozzle and inserted a file to the sd card with a g code and card was seen when inserted but couldn't see any files inside the card. (find out weeks later that with another sd card printer can see the files but haven't printed from the sd card yet)
so i used repetier to connect with my printer did the settings and all went fine.
as calibration is the first thing we have to do first i find out my extruder steps to work right but i cant store them permanently no option on printer and can't save them from repetier either(no eeprom functions enabled in marlin) and decided to flash the board.
with no board connected to pc when i try to verify files from here (sellers link) in arduino i get a an error only with the standard bed configuration.h file the rest work without error
inside the zip file from the previous link there is a pdf with instuctions and has a link for these files they are from the same author
also have read this and Ax has shared his files here
my printer is working ok with the settings i got i want only to enable the eeprom function for now and when i get my sensor to enable it then.
as things work ok with stock version i would like to try it again but get error when verifying the file. Ax's files are verified but i have seen that he has done some modifications on his printer and don't know if it will work with my stock printer . i am new in 3d printing and knowledge is growing while reading but don't feel confident doing things that i don't know.
any help would be appreciated and this is one of the problems i am facing with. sorry for my English guys, its not my native language
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 02:28PM |
Registered: 8 years ago Posts: 10 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:30PM |
Registered: 9 years ago Posts: 31 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:33PM |
Registered: 9 years ago Posts: 269 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:38PM |
Registered: 9 years ago Posts: 269 |
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Canadian Geek
Hi Ax,
I'm using your firmware. Very cool. I love the screens. One problem I'm having is on my Electron i3, 1 click (when rotating the dial) equals 2 screens. It's driving me nuts. What is the setting in configuration.h to fix this.
Thanks in advance,
Jeff
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:44PM |
Registered: 9 years ago Posts: 269 |
//#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder //#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
#ifdef REPRAP_DISCOUNT_SMART_CONTROLLER #define BEEPER 37 #define BTN_EN1 33 // 31 reverse #define BTN_EN2 31 // 33 #define BTN_ENC 35
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 05:54PM |
Registered: 9 years ago Posts: 269 |
Re: Migbot Prusa i3 Unofficial Support Thread January 31, 2016 06:41PM |
Registered: 9 years ago Posts: 31 |
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Ax
Also, If you lot get bored and want to stare at printers or see what I'm printing you can check my Printers out at [www.sledz-uk.co.uk]
There's currently a couple of enclosures going, which are tests of a design I put together yesterday and the plastic parts for my CoreXY project. Yes, they're pink, deal with it.