Monthly Archives: September 2012

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.

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PrintrBoard SD Card & Boot-up fix

I had some trouble using the PrintrBoard’s built in SD card reader using Marlin firmware. I also had an issue with the Y-endstop, which I thought was unrelated, as the board would not boot if the Y-endstop was pressed (ie. if the bed was homed). The only help I found was from Lincomatic’s blog again but this time in a comment from “RustyPaint”, found here.

The issue is that the pin used by the Y-endstop is connected to the SS pin of the processor. So if the Y-endstop is closed it interrupts the SPI bus which the processor uses to talk to the SD card. The conflict also causes the board not to boot if the Y-endstop if pressed.

So the work around is that you disconnect the Y-endstop from the PrintrBoard and plug it in to the free Emergency endstop pins. You must then also configure the firmware to look at the E-stop pins instead of the Y-stop.

In pins.h, within the Marlin firmware, change line 918 from:

#define Y_MIN_PIN 20

to

#define Y_MIN_PIN 37

This solved the booting problem and now I can print from an SD card.

(Update: Just make sure your file name is a maximum of 8 characters long and the extension is a maximum of 3 characters. For example “Myprint1.g”)

Thanks to Nicolas Vicuña for pushing me to find a fix and help testing it.

NB: This post gets a fair bit of traffic.  If this information helped you at all then please leave a comment.

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