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contacttodd
MemberThat was the fix, I adjusted the post processor in sheetcam to output Minimum G-code with no arcs. I appreciate the help offered.
MemberHere is a sample of the type of code being sent:
N0170 G03 X1.0000 Y0.6520 Z-0.0625 I0.0000 J0.3480 F1.5748
MemberThanks for the reply and the feedback on my XY plotter. It’s a fun device and the hardware, when compared to the cost was a good deal and an enjoyable build. However, the electronics on it were a poor fit and buggy. I used that as a chance to get involved with the tinyg and what a GREAT IMPROVEMENT. I really love the tinyg.
I looked at the tinyg documentation and noticed, deductively, that $xtr (or $1tr for the X and $2tr for the Y) seemed like the right value to adjust. I put in guesses for numbers that seemed to ball park the figure they might need and had fairly accurate movement (around 1.5″ instead of 1 foot) when using the following values:
Default Adjusted
$1tr = 0.0039 in. . Modified = 5.0
$2tr = 0.0492 in. . Modified = 5.0The only thing I noticed was that the speed reduced dramatically and the movement became very jittery when traversing along the X or Y movement. Any thoughts as to why it would do that?
Thanks again for your feedback and I really enjoy this hardware!
MemberThanks for the reply. I built the makeblock XY Plotter which can be seen here:
http://cdn1.bigcommerce.com/server2600/4r4weyxd/products/189/images/960/IMG_0107_1__30467.1405403084.1280.1280.jpg?c=2It is using the stepper motors which are detailed here:
http://www.makeblock.cc/42byg-stepper-motor/On the tinyg I configured the $1sa to 2.0 as that gave the X0.01 a movement about 1 inch.
Based upon the reply here, I thought maybe changing the default setting on $1tr to a different value would yield a change in movement but I haven’t noticed anything as of the values I changed it to as of my last modification.
Based on the information I described here, is there a particular setting I should be adjusting to get this movement of X1 = 1″?
Thanks for your assistance.
MemberForgot to answer, I do have X and Y at a zero point so that is not issue.
MemberThanks for the reply. In mm when I try X1 I get about 3 inches (not measured, but at a glance that looks to be about correct). When I specify G20, inches, and try X0.01 I get one inch. When I try X0.1 I get about 1 foot. My plotter cannot handle X1 so I’m not sure what that yields. Do you think the issue is in the amount of movement per degree of the stepper could be the issue?
MemberOk, I will try it. Going back to your original comment, how does one control the spindle output via GCODE? Thanks again for your help on the fine tuning of using the tinyg.
MemberI would prefer to control the Z axis with a solenoid using Z axis commands. I can use a servo if that is more similar to the way this axis should be used. I really just need up/down on this axis and the solenoid is my preferred mechanism. Any suggestions? And thank you for your help!
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