I want your help!, this is a vertical drawbot ( https://www.thingiverse.com/thing:2700673 ).

(Gerardo De Nicolas) #1

I want your help!, this is a vertical drawbot (https://www.thingiverse.com/thing:2700673).
I am using a Arduino CNC shield, with the second X axis motor in the A axis.
When I press (Y+) in Laserweb, the Y motor and one of the X motors moves (as shown in the video (https://www.youtube.com/watch?v=2wGX2nS0v5M)).
I don’t know if the problem is in the shield, or the downloaded girl-servo (https://github.com/robottini/grbl-servo) in the Arduino UNO or in Laserweb software.


(ATN) #2

Could this be a solution?

(Gerardo De Nicolas) #3

@ATN11 Thanks for your answer, it didn’t work. I’ll try with an older shield (maybe V3)

(Claudio Prezzi) #4

The only difference between older and newer Pronterface CNC Shields is the swap of pins D11 and D12, because Grbl swapped them from v0.8 to 0.9. If you use an older (<V3.51) CNC shield with Grbl >=0.9 you need to connect the servo to Z-Limit pin insted of Spindle Enable (and vice versa).

About your problem: Did you try to set the jumpers for the A axis to Y instead of X? It looks like the jumpers are crossed.

By the way, I made a servo version of Grbl 1.1f (see: https://github.com/cprezzi/grbl-servo). Grbl 1.1 has many advantages compared to 0.9.