# Machsupport Forum

## Mach Discussion => General Mach Discussion => Topic started by: v tec on January 07, 2012, 03:40:37 PM

Title: french newbi for use mach3 with arm robot
Post by: v tec on January 07, 2012, 03:40:37 PM
hi from france

i want create a arm robot, and work with mach3

but what mach3 choose for 5 axis?

i want use the program for exprim the angle and not the "position"

exemple

g1 x10 y20 z-30

x=10°
y=20°
z=-30°

but the french patch can t work, and my english is so so

someone can help me on msn, for start to pilot and calibrate my stepper engine

thanks
Title: Re: french newbi for use mach3 with arm robot
Post by: v tec on January 07, 2012, 04:28:27 PM
1 step=1.8°

if my gcode is for exemple

x 1.8 y18 z-36

how to mach3 know that 1.8°= for exemple 10mm on the X axis

thanks

Title: Re: french newbi for use mach3 with arm robot
Post by: Hood on January 07, 2012, 04:48:56 PM
1 revolution would be 360 degrees so if you work out how many steps it takes to move 1 revolution then divide by 360 that will give you the steps per unit and 1 unit will equal 1 degree.
As an example if you had a stepper motor with 1.8 degree steps then that is 200 per revolution, if your drives are 10 microsteps then that would be 200 x 10 =2,000 steps per rev so 2000/360 = 5.5555555555556 steps per  degree.
Hood
Title: Re: french newbi for use mach3 with arm robot
Post by: v tec on January 07, 2012, 04:56:34 PM
for my project

stepper motor have 200 step, each step=1.8°

but i dont know where write when x=1.8, the information is 1step

and on the screen i see the xyz axis

but how to see the ABC axis?

i have try a gcode, with ABC position, but not work

i don t understand

someone can help me a little moment on msn, or aim?
Title: Re: french newbi for use mach3 with arm robot
Post by: Hood on January 07, 2012, 05:00:33 PM
You would do that in Motor tuning, you could just use X Y Z or you could change the screen by using one of the screen designers so that the X Y Z show A B C.
One thing however is Mach does not do kinematics so you would have to programme each movement.

Hood
Title: Re: french newbi for use mach3 with arm robot
Post by: v tec on January 07, 2012, 05:03:34 PM
for the program it s not a problem

i can write each rotation for each stepper= movement

but after i need to define, what is the g0 speed and the g1 speed