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PyGRBL -- A set of scripts to play well with GRBL and a CNC

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[pyGRBL]

Purpose: Controls the GRBLshield using python for general motion and streaming.

Commands:

Here is a small list of some of the commands that one might find useful in this package:

* command.py   -- Send basic commands to grbl
* align.py     -- Use arrowkeys/a/z to move mill bit
* stream.py    -- Stream gcode to grbl.
* optimize.py  -- Optimization routine.
* orient.py    -- OpenCV Camera Orientation and Height
* home.py      -- Enable homing
* visualize.py -- Visualize the 2D PCB boards

* flatten.py    -- Generate raster gcode script.
* findheight.py -- Generate a height gcode script

Most of these commands should support:

    * -d -- Enable fake serial device to debug

grbl settings:

These are the settings that work on the old machine:

$0 = 188.976 (steps/mm x)
$1 = 188.976 (steps/mm y)
$2 = 188.976 (steps/mm z)
$3 = 100 (microseconds step pulse)
$4 = 130.000 (mm/min default feed rate)
$5 = 260.000 (mm/min default seek rate)
$6 = 0.200 (mm/arc segment)
$7 = 96 (step port invert mask. binary = 1100000)
$8 = 4.000 (acceleration in mm/sec^2)
$9 = 0.050 (cornering junction deviation in mm)

New Machine 10/13:

$0 = 755.906 (x, step/mm)
$1 = 755.906 (y, step/mm)
$2 = 755.906 (z, step/mm)
$3 = 50 (step pulse, usec)
$4 = 260.000 (default feed, mm/min)
$5 = 520.000 (default seek, mm/min)
$6 = 128 (step port invert mask, int:10000000)
$7 = 50 (step idle delay, msec)
$8 = 50.000 (acceleration, mm/sec^2)
$9 = 0.050 (junction deviation, mm)
$10 = 0.200 (arc, mm/segment)
$11 = 25 (n-arc correction, int)
$12 = 3 (n-decimals, int)
$13 = 1 (report inches, bool)
$14 = 1 (auto start, bool)
$15 = 0 (invert step enable, bool)

Materials Settings:

Plexyglass / Acrylic $4 = 520 $5 = 520 Mill Depth = 0.010 - 0.020 Requires oil Drills can be problematic -- best to run one at a time

Extra:

* Mendez_modifier.terminal -- OSX terminal support for keystrokes.

ToDo:

* Document EVERYTHING.

History:

* [2011/12] -- Started by Mendez
* [2012/01] -- Pushed without documentation to bitbucket.
* [2012/08] -- Updated documentation and cleaned up.
* [2013/08] -- Switched to github public.
* [2014/03] -- working on opencv

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