Hi,
I'm setting up a new i3 derived printer (24V) using a smoothie 5x 1.0b, and got an irritating small problem.
I prefer to use optical endstops (V19 1028 TCST 2103 ) rather than switches, because I find them much more repeatable, which is especially important on Z.
I could wire them correctly on X and Z but could not make it work on Y.
On Y, what happens is that the endstop switch correctly from 0 to 1 when homing, but never get back to 0 when leaving the end position.
Any idea what this happens ? I checked cabling and continuity, used 2 different detectors, used both YMIN et YMAX pins. The only difference is that the Y cable is perhaps 200mm longer.
It is not a big deal because I could use a standard switch and that works, but I would like to understand.
the relevant part of the config (note that I home to Ymax) :
## Endstops
endstops_enable true # The endstop module is enabled by default and can be disabled here
#corexy_homing false # Set to true if homing on a hbot or corexy
alpha_min_endstop 1.24^ # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
#alpha_max_endstop 1.25^ # Pin to read max endstop, uncomment this and comment the above if using max endstops
alpha_homing_direction home_to_min # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
alpha_min 0 # This gets loaded as the current position after homing when home_to_min is set
alpha_max 190 # This gets loaded as the current position after homing when home_to_max is set
#beta_min_endstop 1.26^ # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
beta_max_endstop 1.26^ # Pin to read max endstop, uncomment this and comment the above if using max endstops
beta_homing_direction home_to_max # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
beta_min 0 # This gets loaded as the current position after homing when home_to_min is set
beta_max 200 # This gets loaded as the current position after homing when home_to_max is set
gamma_min_endstop 1.28^ # Pin to read min endstop, add a ! to invert if endstop is NO connected to ground
#gamma_max_endstop 1.29^ # Pin to read max endstop, uncomment this and comment the above if using max endstops
gamma_homing_direction home_to_min # Or set to home_to_max and set alpha_max and uncomment the alpha_max_endstop
gamma_min 0 # This gets loaded as the current position after homing when home_to_min is set
gamma_max 160 # This gets loaded as the current position after homing when home_to_max is set
alpha_max_travel 195 # Max travel in mm for alpha/X axis when homing
beta_max_travel 205 # Max travel in mm for beta/Y axis when homing
gamma_max_travel 165 # Max travel in mm for gamma/Z axis when homing
# Optional enable limit switches, actions will stop if any enabled limit switch is triggered
#alpha_limit_enable false # Set to true to enable X min and max limit switches
#beta_limit_enable false # Set to true to enable Y min and max limit switches
#gamma_limit_enable false # Set to true to enable Z min and max limit switches
# Endstops home at their fast feedrate first, then once the endstop is found they home again at their slow feedrate for accuracy
alpha_fast_homing_rate_mm_s 50 # Alpha/X fast homing feedrate in mm/second
alpha_slow_homing_rate_mm_s 25 # Alpha/X slow homing feedrate in mm/second
beta_fast_homing_rate_mm_s 50 # Beta/Y fast homing feedrate in mm/second
beta_slow_homing_rate_mm_s 25 # Beta/Y slow homing feedrate in mm/second
gamma_fast_homing_rate_mm_s 4 # Gamma/Z fast homing feedrate in mm/second
gamma_slow_homing_rate_mm_s 2 # Gamma/Z slow homing feedrate in mm/second
alpha_homing_retract_mm 5 # Distance to retract from the endstop after it is hit for alpha/X
beta_homing_retract_mm 5 # Distance to retract from the endstop after it is hit for beta/Y
gamma_homing_retract_mm 1 # Distance to retract from the endstop after it is hit for gamma/Z
# Optional enable limit switches, actions will stop if any enabled limit switch is triggered (all are set for delta)
#alpha_limit_enable false # Set to true to enable X min and max limit switches
#beta_limit_enable false # Set to true to enable Y min and max limit switches
#gamma_limit_enable false # Set to true to enable Z min and max limit switches
# Optional order in which axis will home, default is they all home at the same time,
# If this is set it will force each axis to home one at a time in the specified order
homing_order XYZ # X axis followed by Y then Z last
#move_to_origin_after_home false # Move XY to 0,0 after homing
#endstop_debounce_count 100 # Uncomment if you get noise on your endstops, default is 100
#endstop_debounce_ms 1 # Uncomment if you get noise on your endstops, default is 1 millisecond debounce
#home_z_first true # Uncomment and set to true to home the Z first, otherwise Z homes after XY
# End of endstop config
