X,y,z step per MM

Machine: home brew

Board: laserboard

Firmware: I have a new board and I’m using whatever it came with

Here’s the issue.
probably an easy one but its a bit confusing.
i am trying to setup my step per unit.

i was expecting to see X,Y,Z,A
instead, i get:

Arm solution configuration : Cartesian robot. Translates mm positions into stepper positions

alpha_steps_per_mm 157.575 # Steps per mm for alpha stepper
beta_steps_per_mm 157.575 # Steps per mm for beta stepper
gamma_steps_per_mm 157.575 # Steps per mm for gamma stepper

or:

A axis

delta_steps_per_mm 157.5 # may be steps per degree for example
delta_step_pin 2.3 # Pin for delta stepper step signal
delta_dir_pin 0.22 # Pin for delta stepper direction
delta_en_pin 0.21 # Pin for delta enable
delta_current 0.6 # Z stepper motor current
delta_max_rate 12000 # mm/min
delta_acceleration 1000 # mm/sec²

B axis

epsilon_steps_per_mm 100 # may be steps per degree for example
epsilon_step_pin xx # Pin for delta stepper step signal
epsilon_dir_pin xx # Pin for delta stepper direction
epsilon_en_pin xx # Pin for delta enable
epsilon_current 1.5 # Z stepper motor current
epsilon_max_rate 300.0 # mm/min
epsilon_acceleration 500.0 # mm/sec²

C axis

zeta_steps_per_mm 100 # may be steps per degree for example
zeta_step_pin xx # Pin for delta stepper step signal
zeta_dir_pin xx # Pin for delta stepper direction
zeta_en_pin xx # Pin for delta enable
zeta_current 1.5 # Z stepper motor current
zeta_max_rate 300.0 # mm/min
zeta_acceleration 500.0 # mm/sec²

either way, i am not sure which one i need to change.

which witch is which ?

Alpha=X Beta=Y Gamma=Z

1 Like

Hi Benoit,

The the axes of your machine and peripherals equate to the following parameters in the configuration file:

X = Alpha (left to right)
Y = Beta (front to back)
Z = Gamma (top to bottom)
A = Delta (depends on what is connected, typically a rotary)

Below is a great place to start for learning which configurations to alter for a non-standard bed size:

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