Plotter drawing unexpected circles

#1

Hello Makeblock,

I’m learning how to use the XY Plotter (v1) with a mac os computer. Everything seems ok for straight-line drawings (G0 and G01 gcode commands). But when drawing arcs (G02 and G03), strange and unexpected circles appears frequently.

I give you a code example :

G90
G00 X 99.9766 Y 75.0199 Z 0.0000
G03 X 100.2899 Y 73.0513 Z 1.0000 I 62.8027 J 8.9836

where the third command line produces a circle where it must draw a tiny curve.

I check my gcode with Gwizard and I cannot see the problem !

Please, answer me ! I need your help !!

#2

hi,@Niko,have a try to use the v2’s software?, https://github.com/Makeblock-official/XY-Plotter-2.0/tree/master/software, it’s an Processing program.

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#3

Hi robotfan,

It seems interesting. I’m trying actually to launch it on my mac.

But I don’t think it will solve the problem, because when I send an example of a “wrong” command line (see my last post) with arduino serial monitor, the same bad circle appears. So I don’t think the problem has something to do with plotter controller application but maybe with the arduino sketch of the V1 plotter. And as I am not a specialist in code the problem is not easy for me to understand… Rrrr…

#4

Hi there, I have tried using this new V2 GCode parser and the movements are a lot smoother, the only problem is I cannot get the X axis stepper motor to communicate with my stepper motor driver (2H microstep) Is this something to do with a different pin layout on the Meduino compared to the Me-Baseboard?

Do I need to re-map pins?

Any help will be greatly appreciated as the version 1 of the software is rather glitchy

Regards,

L

#5