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Firmware homing support for ReplicatorG 24

by winterg Mar 7, 2011
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Damn, I hate Swiss cheese! The only good thing the Swiss came out with is their Army knife... but I have 2 or 3 Gerber knives that have really made the Swiss look like group of lazy people. However, I have to admit that the Swiss Army knife (even though they don't really have an Army, which is a hard thing to grasp for a former Marine) pretty much spawned the evolution of kinives such as the Leatherman and the Gerber knives I own now.

HURRAY!!! Just what I've been looking for! I've finally come to the conclusion that it's much easier to print my "things" from the SD card, rathter than from my old laptop. I only use the laptop to set the "HOME" position before each print. I'm using Jetty's COMPLETELY AWESOME firmware for the Gen-4 interface, and don't know how your update will interfere with Jetty's "The Lord of the Thing" interface... LOL. I've tried to print objects completely independent of my laptop (using the homing routine in Gcode), bjut it always seems to start printing about 1/2" about my HBP. I've always deleted the "homing" section of my Gcode, because it has never worked for my ToM. I pre-heat my machine and start my files from the SD card (after making sure to use my laptop to set all axes to the "HOME" position). Otherwise, I would be dealing with a lot of Gcode commands that I haven't quite learned yet,

Hi there,

I just updated to ReplicatorG 25 and wonder if this would work as well.

I tried to find your Github without success. Can you post the link to this download?



Sorry it took me so long to reply to you but all my repos can be found here: https://github.com/xtremdhttps://github.com/xtremd

That MUST be in the latest ReplicatorG.

Great work !

Thanks! Glad you like it!

I'm also hoping that this wil be integrated soon into MB's RepG and MB firmware master trunk. That would be awesome!

I will readily admit to being not-so-bright. Does this solve the situation where you have to edit gcode when your Z-height changes due to rebuilding something? Other than that, I've never had a reason to go back and edit old gcode. If it does solve that... how?

Don't worry. My horrible explicative writing skills are to blame. Let me try to expound on that point:

Once the M138 homing code has been skeined into your GCode, that GCode file is now ready to go and should never have to be re-skeined solely because your Build Platform got shorter or taller (through a rebuild or hotswap of build platforms).

You either have to run the setup command again and recenter the BP. Or (if you have a cupcake printer) install Zaggo's Z-Probe hardware. This will automatically check the height of the BP and should automatically adjust for BP hotswaps between taller and shorter (including swapping between an automated BP and a regular BP!). Take a look at Zaggo's blog here for more info on his ZProbe hardware: http://pleasantsoftware.com/developer/3d/2010/09/26/keep-it-simple/http://pleasantsoftware.com/de...

Hope this helps (sorry if it doesn't. I typed this out in a hurry.)