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Hi ,

I finally convinced Chinese guy to resend a new board. Before doing this i bought a new ardunio uno and cnc shield with a4988 (same chips on the board) stepper motor drivers. I ve tested...

Grbl 1.1h ['$' for help]
>>> $$
$0 = 10 (Step pulse time, microseconds)
$1 = 255 (Step idle delay, milliseconds)
$2 = 0 (Step pulse invert, mask)
$3 = 0 (Step direction invert, mask)...

I ve worked to find the stepper motors pin outs (i attached the images.) on the board.

I am sure for true connection of stepper motor now. And i flash the board to latest grbl 1.1.h from the...

Yes result is same as control board.

When i try to turn stepper by hand i cant. It resist to force i was applied.

New settings as you explain :
$0 = 10 (Step pulse time, microseconds)
$1 = 25 (Step idle delay, milliseconds)...

$0 = 10 (Step pulse time, microseconds)
$1 = 25 (Step idle delay, milliseconds)
$2 = 0 (Step pulse invert, mask)
$3 = 5 (Step direction invert, mask)
$4 = 0 (Invert step enable...

I have 12V 10A power supply . But i cant find any info or datasheet of the board to wire steppers motors.

Hi , i have the same problem but i have a little diffrent board but based on ardunio uno grbl (1.1f) . I've explained at this post...

Hi ,

i want to build a cnc machine for engarving and cutting wood plates .

i bought this control card first and stepper motors before constuct mechancic body of machine.

control card :...