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→GRBL settings
==GRBL settings==
Program all at once*open screen:**<code>screen /dev/tty.usbmodem1421</code>**copy and past the following (repeat any lines that have mistakes):
<blockquote><pre>
$N0=G20
$7=25 (step idle delay, msec)
$8=900.000 (acceleration, mm/sec2)
$9=0.050 (junction deviation, mm)
$10=0.100 (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)
$16=0 (hard limits, bool)
$17=0 (homing cycle, bool)
$18=0 (homing dir invert mask, int:00000000)
$19=25.000 (homing feed, mm/min)
$20=250.000 (homing seek, mm/min)
$21=100 (homing debounce, msec)
$22=1.000 (homing pull-off, mm)
ok
</pre></blockquote>
*Check GRBL settings
*You should see:
<blockquote><pre>
Grbl 0.8c ['$' for help]
G20ok
G91M3ok
error: Unsupported statement
$0=6.964 (x, step/mm)
$1=6.964 (y, step/mm)
$2=6.964 (z, step/mm)
$3=10 (step pulse, usec)
$4=20320.000 (default feed, mm/min)
$5=65000.000 (default seek, mm/min)
$6=56 (step port invert mask, int:00111000)
$7=25 (step idle delay, msec)
$8=900.000 (acceleration, mm/sec^2)
$9=0.050 (junction deviation, mm)
$10=0.100 (arc, mm/segment)