Category Archives: Updates

Marlin – Auto Bed Levelling

A great feature was added to the Marlin firmware last year and I’ve finally gotten round to implementing it on my printer.

There were quite a few hurdles to over-come including designing some new parts to make it work.

I wanted to re-design the whole X – axis for my Mendel-Max as the clamps for holding the X – axis rods were poor and the belt being outside of the 2 rods meant there was a considerable amount of turning force on the parts, especially if you wanted tight belts.

So with the belt now between the 2 rods I had to completely re-design the carriage not only because the belt clamps had to be moved but I wanted to move to a direct-drive extruder on top of designing the probe arm to probe the bed!

With all of the new designs complete there were plenty of adjustments to be made to the firmware.  Moving to a direct-drive extruder meant new E – step / acceleration / speed settings. Enabling the bed levelling, setting up the servo including finding out which pin to assign to the servo for my PrintrBoard.  The biggest hurdle was discovering that by enabling the bed levelling filled the RAM on the PrintrBoard! To make the firmware fit I had to remove parts of the LCD menu.

After you have everything is working you need to set the distance from the hot-end to the micro-switch on your probe arm. Spend some time getting this as accurate as possible makes for the best result and only needs to be done once.

Has it been worth it? YES!

It’s great not having to adjust the bed manually, you can fine tune the distance between the nozzle and the bed in the LCD menu which is far more stable that any screw adjustments.

Tagged , , ,

Slic3r 1.0.0 RC3

So Slic3r is almost at an official version 1!!

The latest release is less about features and more about but fixes.

As always, a very big thank you goes out to Alessandro Ranellucci and everyone else who has contributed to the application.  Especially in keeping it FREE!

The ONE bug I hope gets fixed before the final version 1 gets released is hole diameters.

It’s quite well documented on the Slic3r forums that the holes generated by Slic3r are smaller than designed.  Fingers crossed for version 1.

Tagged ,

Latest Marlin firmware for PrintrBoard

Recently I had noticed that the version of Marlin I was using on my 3D printer (using a PrintrBoard as the control board) was Marlin v1.0.0 RC2 and looking on GitHub there had been quite a few changes since this version was released.

Although a lot of work making it compatible with a PrintrBoard had already been included I needed to make a few alterations to get it working fully.

Code alterations I’ve made include:

  • change motherboard, temp sensors, endstops not inverting, included SD and LCD support to Configuration.h
  • swapped Y endstop pin to E endstop pin, added LCD, encoder and SD card pins to pins.h

Obvious updates include:

  • X & Y location on LCD home screen
  • Long filenames on SD card support
  • Move Axis by 10mm, 1mm or 0.1mm increments

You can download the version of Marlin I’m using here.  Don’t forget to adjust the calibration figures to your printers requirements.

Tagged , , ,

Repetier Host Mac v0.40 – Update

Another update for Repetier Host for Mac.  Here are the change log notes:

  Now with Slic3r 0.9.3
  Exact positioning in object placement.
  Support for Mach3 flavored output.
  Added flow multiplier in manual controls.
  M117 on Marlin shows no more garbage.
  Homing to X, Y and Z max possible.
  Temperatures are now floating point values.
  More flexible coordinate system for e.g. Rostock delta printer.
  Mark origin with a dot.
  Some minor bug fixes.

Grab your copy HERE!

Tagged , ,

Repetier Host Mac v0.32 – Update

It’s quite easy to miss updates to the software involved with 3D printers so I’ll try and alert you if I hear of an update.

Here is a small update to Repetier Host for Mac to version 0.32 and the change log for this version is:

Added sparkle for automatic updates.
Use variables from slicer in g-code.
Antialiasing.
Fixed bug crashing on OSX 10.6 and older on start.
Fixed bug in undo/redo.
Some minor bug fixes.

When I first started 3D printing I was using Pronterface then moved on to Repetier.  One of the best features of Repetier is that you can see what the print will look like in 3D and you can spot potential flaws in your print without wasting filament.

Tagged ,