Can someone point me to instructions on how to connect a touch off plate to TinyG? Thanks!
TinyG hookup for touch off plate?
From the original Synthetos forum (2011–2025)
I am not familiar with what a "touch off plate" is.
Can you provide a brief description or URL to such?
Touch Plate
Touch Probe
http://m.youtube.com/results?q=cnc%20touch%20plate&sm=3
Ah so, of course.
Have you read thru any of the G38 command discussions, particularly on Chilipeppr, where an auto-leveler has been implemented?
Try a Google search on "auto leveling tinyG G38", lots of hits.
It seems that the basic method used is to redefine an Z limit switch to be NO, connect a wire to the mill bit and a wire to the workpiece; works fine for a circuit board target, not so much when milling wood or plastic.
Seems that might work OK when milling metal in general.
You could just hit the Z limit, shutting down tinyG, then restart tinyG and Z will be a a new zero point.
Chilipeppr is much more sophisticated - probing an area and compensating for probe variations by in-line modification of GCode.
That help?
Thanks for your notes. Looks most helpful!
For this process to work, switch settings are changed to NO. Makes sense as does connecting a sensor/switch to Zmin terminal of TinyG.
However, are other settings for z axis changed as well?
...like:
$ztn=-95.000 (travel minimum)
$ztm=0.000 (travel maximum)
$zsn=0 (z switch min, 0=off,1=homing,2=limit,3=limit+homing)
$zsx=1 (z switch max, 0=off,1=homing,2=limit,3=limit+homing)
(I'm just using CoolTerm to send commands and text files to TinyG.)
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