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Discussion in 'Mods and Upgrades' started by Mike Kelly, Jun 1, 2014.
Hey Mike - how do I know if I'm on metric rods or not??
You would only be on metric if you replaced them.
Would using a Hall effect sensors instead of switches improve the accuracy? A Hall effect sensor attached to each end of the x carriage with the magnet attached to a arm from the coupler nut?
Just wanted to throw it out there. Thoughts?
That could definitely work.
If you have a layer height of 0.1mm say, then the first layer needs to be "levelled" to much better than 0.1mm. How much better though? Probably to around a tenth or +/- 0.01mm. Anything much less than that and the first layer will not look uniform.
Why does a perfectly uniform first layer matter? If that's such a concern you probably should use a raft.
The point of the first layer is to get adhesion, the autolevel eases that.
I think even from an adhesion point of view the first layer needs to be "leveled" to much better than 0.1mm variation (ie paper thickness). Auto leveling should be capable of achieving that.
But that's just my view. It would be useful to determine what is the max variation in the first layer height which is "acceptable" in practice. I know that Tesseract has some views on this and some pics of good quality first layers. And of course his analoq technology self leveling works a treat http://www.thingiverse.com/thing:125626
You could try it with your setup by artificially inducing an offset w/ tape on a probe point.
I'm not sure what precision this auto-level method achieves. I'd assume the variation is minimal as large prints have a nice consistent first layer for me. Not sure what else to tell you other than "If it works, don't question it"
Here is a $64000 question .. where on the board do you plug it in? in the old Z endstop place?
For 64k I will personally fly out there and install it for you. All while singing the TV theme song of your choice.
Oh and, yes to the old Z spot.
Although, I've heard the Z spot is very hard to find, some say it is a myth but if you dig around down there enough, you may just find it.
I'll do it for $50k
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I know this is a nube question but. @Mike Kelly where do the switches plug in on the ramps....
ive been using this as a template when messing with wiring
The same spot as the Z min endstop.
oh duh it replaces it all together.. ha ha
omg i just realized you answered the question i asked like 4 comments up.... im "that guy"
which file do you flash to the robo? the autolvl or the marlin? there are two sets of code in that folder
i am still waiting for my y axis upgrade. can I add the auto leveling upgrade as well?
also i dont understand what everything under "modify the g code" means could explain that to me like im five
Under your slicer settings there should be a custom G-code that it runs at the start of the print.
ohhhh ok i thought maybe you had to input this every time you slice.