Welcome to the SeeMeCNC Community

I can't believe after a smooth build I am having issues with software on a Rostock V2.

I had prepared my oldish G4 iBook to use with the new 3d printer. It was running Lubuntu lean and fast. But it just turned out that installing Arduino software was a bit more complicated than expected. No problem, really. I did a fresh install of OSX 10.4.11 - last OSX to run on this. Installed Arduino 1.0.6 and without problems uploaded firmware to the Rostock. Next was the fun part installing MatterControl - oops, needs OSX 10.7 or later. Can't find an older version.

It would have been so nice to use the small laptop with the printer - the printer is so much harder to move to where my bigger computers are. But, ok, move the printer upstairs. Hooked it up to Mac Mini running Yosemite. Downloaded Arduino 1.6.7 and MatterControl. Everything starts up..... but trying to compile/upload firmware (Repetier) I get error: can't compile, file not found (twi.c) - or something like that. The file is obviously being included in the code, it's present in the libraries where it should be and Arduino 1.0.6 finds it on the laptop. Ok, so I tried to remove Arduino 1.6.7 and install 1.0.6 but this will not at all compile Repetier on Yosemite.

I realize that once I have the firmware on the Rostock I might not necessarily need Arduino. But I would really like to have all these tools running on the same machine.

Any ideas from anyone?

Thanks

you have to use the older version 1.6.1
https://www.arduino.cc/en/Main/OldSoftw ... s#previous
I ran into this last month

You do not need to be connected all the time. I am connected to my printer once every 2 months. You can use the sd car after it is setup.

+1 Windshadow. That error is an Arduino version mismatch problem. Welcome to open source.

Once you are going with firmware, try Repeater Host instead of Matter Control. It should support your older OS as it's been around a lot longer. MC is relatively new so they drew the line in the sand with a more recent OS version.

Thanks for the tips.
Got Arduino 1.6.1 running now. Research did reveal that there is a problem with twi.c in 1.6.7

Tried Repeater Host on my old laptop. Sadly OSX 10.4 is just too old for it.
Successfully printed the fan shroud last night from MatterControl (running from the MacMini). Happy that nothing blew up or was wired backwards. Print looks great.

SD card might be the best choice then. We'll see.

Good news. The other app worth checking out is Pronterface for OSX. It just might run on 10.4.

Check out Octoprint, if your laptop has wireless it will let you control your printer from another computer. You can do your slicing remotely (or even in Octoprint using Cura) and then just upload the gcode and hit go.