Changes

== Maintenance ==

== Maintenance ==

10.6.2016 - Danny Blanchard: Downloaded and compiled GRBL v0.9j onto the gShield/Uno.  Homing and hard limits now work, although I'm still getting the occasional "Alarm: Hard Limit" that is likely due to excessive RF noise (I'll be attacking this next) from the spindle and other electronics.  The machine (by design) will not move until a homing cycle has been run (send "$H" via Universal G-Code Sender command line console).  Home position (X0 Y0 Z0) is located on the left side of the machine as you look at it, closest to the operator, and Z homes all the way to the up top.  After doing some settings debugging (acceleration, arc, limit direction inversions, feed/seek/homing rate adjustments) I was able to make some basic, yet exciting cuts.  First I generated a usable G-code using Fusion 360 and their "Generic GRBL" post-processor setting.  After some tweaking on the side of GRBL, I was able to get 2D and 3D Adaptive clearing (HSM stuff) working, as well as helical ramping/boring. It's alive! 

10.6.2016 - Danny Blanchard: Downloaded and compiled GRBL v0.9j onto the gShield/Uno.  Homing and hard limits now work (Pin 12 is now used for the Z-axis limit switch, as opposed to Pin 11 in v0.8c), although I'm still getting the occasional mid-project "Alarm: Hard Limit" that is likely due to excessive RF noise (I'll be attacking this next) from the spindle and other electronics.  The machine (by design) will not move until a homing cycle has been run (send "$H" via Universal G-Code Sender command line console).  Home position (X0 Y0 Z0) is located on the left side of the machine as you look at it, closest to the operator, and Z homes all the way to the up top.  After doing some settings debugging (acceleration, arc, limit direction inversions, feed/seek/homing rate adjustments) I was able to make some basic, yet exciting cuts.  First I generated a usable G-code using Fusion 360 and their "Generic GRBL" post-processor setting.  After some tweaking on the side of GRBL, I was able to get 2D and 3D Adaptive clearing (HSM stuff) working, as well as helical ramping/boring.

9.12.2016 - Danny Blanchard: Normally Open (NO) Homing switches installed on X, Y, and Z-axis.  Positive Z-axis stop plate installed to prevent top of spindle from crashing at the top of it's travel.  Each axis has been wired with a 330ohm resistor connected to 5vdc, as seen below (colors in graphic are wrong: X is actually yellow wire, Y blue wire, Z is orange wire, and ground is black wire).  V-wheels and rails all cleaned with a toothbrush: lots of gunk (smooshed wood dust, I believe) on the anodized rails.  Also replaced some twist-nuts with solder/heatshrink connections, but there is still more to do in that regard.

9.12.2016 - Danny Blanchard: Normally Open (NO) Homing switches installed on X, Y, and Z-axis.  Positive Z-axis stop plate installed to prevent top of spindle from crashing at the top of it's travel.  Each axis has been wired with a 330ohm resistor connected to 5vdc, as seen below (colors in graphic are wrong: X is actually yellow wire, Y blue wire, Z is orange wire, and ground is black wire).  V-wheels and rails all cleaned with a toothbrush: lots of gunk (smooshed wood dust, I believe) on the anodized rails.  Also replaced some twist-nuts with solder/heatshrink connections, but there is still more to do in that regard.

5. General wiring clean-up and sheathing: some connectors have bare leads exposed, and I'd love to clean up the build by sheathing many of the wires.

5. General wiring clean-up and sheathing: some connectors have bare leads exposed, and I'd love to clean up the build by sheathing many of the wires.

== Documentation ==

== Documentation ==