1 Topic by TahoeTim

  • TahoeTim
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  • From: Lake Tahoe
  • Registered: 2013-09-05
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Topic: extruder calibration

Wanting to be a good operator, I'm trying to adjust my extruder feed per the recommendations here.

I have a brand new SD3 and I read thru the links, search, wiki, youtube, etc. It is all a blur and confusing. Someone please just post a CURRENT method to set the extruder!

(there is conflicting info on this forum. What chip do I have? Do I flash it? what files? what is the board I select)

Mine is spitting out 130 mm when I ask for 100 mm.


frustrated noob

Hardware: SD3, Octoprint, Raspberry Pi
Software: Cura and ViaCad

2 Reply by innovate

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  • Registered: 2013-07-19
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Re: extruder calibration

The way that I did it is that I downloaded the firmware from solidoodle. I also downloaded arduino 0022 and opened the firmware folder, inside the firmware folder there is a sanguino folder you have to copy that folder into the hardware folder inside of the arduino folder after that you run arduino click on the tools button go to board and make sure you select sanguino. After, click on file and go to firmware look for configuration.h and open that scroll down until you find #define DEFAULT_AXIS_STEPS_PER_UNIT   {88,88,2268,100} the fourth input is what you will have to adjust mine was at 138 and I adjusted it to 100. After you do all that save it, verify it, and go to the back of your electronics and reset it and upload the code once it says that it upload it test it out you might have to adjust it until you get it right. make sure you download the firmware for sd3 and not sd2 there is other methods, but this is the method that I used.  Hope this helps.

3 Reply by shan.destromp (edited by shan.destromp 2013-09-20 22:07:39)

  • shan.destromp
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Re: extruder calibration

Flashing firmware shouldn't be required to change your extruder steps.  Their are various guides on how to do the calibration prints and measurements (see my post here for a bunch to start with); but once you've gotten the value you need to change, just go to Config > Firmware EEPROM Configuration in Repetier-Host.

|                                                           SD3                                                |
| Mk5 Jigsaw |:| Overkill Y-Axis Bracket |:| Lawsy's X/Y Carriage Replacement |
|  M5 Z-Axis  |:|         Glass Bed            |:|               Plexiglass Enclosure       |

4 Reply by innovate

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Re: extruder calibration

That is easier wish that I would have known that before.

5 Reply by TahoeTim

  • TahoeTim
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Re: extruder calibration

I don't use repetier host but when I boot it up, the firmware menu item is grayed out

Hardware: SD3, Octoprint, Raspberry Pi
Software: Cura and ViaCad

6 Reply by innovate

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Re: extruder calibration

When you go to repetier host make sure to click on  the connect button if you don't it will show grayed out.

7 Reply by bpbusch

  • bpbusch
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  • Registered: 2013-12-01
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Re: extruder calibration

I have to agree with TahoeTim. There is conflicting/potentially out of date/incomplete information in several places. Some of it may have to do with the versions of Repetier for different operating systems. On the Mac OS X version, for instance, there is no "Config" menu and certainly not one with "Firmware EEPROM Configuration" in it. There is, however, a "Printer" menu option with "EEPROM Settings" within it. Unfortunately, when this window opens it is blank and a small, permanent message at the bottom of the window indicates that EEPROM settings are only available for Repetier firmware. Ian's blog indicates that this window does not always work but no amount of restarting/rebooting will make it work properly. If this is indeed the case for the Mac version of Repetier, is the only, good, long-term solution to update via the Arduino software?

8 Reply by ronsii

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Re: extruder calibration

Using the 'M' codes will work no matter what software you are using... that's why I usually point to a link that has that info in it... especially if the person with the problem does not initially volunteer the platform they are using smile