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Remove backlash correction from basic stack, as this is handled by move rel

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jaknapper 2026-03-04 18:43:41 +00:00 • committed by Joe Knapper
parent ffb9a4d509
commit b43150c8bb
1 changed files with 2 additions and 14 deletions
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16
src/openflexure_microscope_server/things/autofocus.py
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@ -67,11 +67,6 @@ class StackParams(BaseModel):
settling_time: float = Field(default=0.3, ge=0) settling_time: float = Field(default=0.3, ge=0)
"""Time (in seconds) between moving and capturing an image""" """Time (in seconds) between moving and capturing an image"""
backlash_correction: int = 250
"""
Distance (in steps) to overshoot a move and then undo, to account for backlash
"""
origin: StackOrigin = StackOrigin.START origin: StackOrigin = StackOrigin.START
"""Where the stack is positioned relative to the current z position.""" """Where the stack is positioned relative to the current z position."""
@ -760,7 +755,7 @@ class AutofocusThing(lt.Thing):
logic, or autofocus is performed. logic, or autofocus is performed.
:param stack_parameters: StackParams defining stack spacing, :param stack_parameters: StackParams defining stack spacing,
image count and backlash correction. and image count.
:param capture_parameters: CaptureParams defining save :param capture_parameters: CaptureParams defining save
resolution, images directory. resolution, images directory.
@ -781,14 +776,7 @@ class AutofocusThing(lt.Thing):
else: else:
target_offset = 0 target_offset = 0
# Apply backlash correction: overshoot and move back self._stage.move_relative(z=target_offset)
overshoot = target_offset - stack_parameters.backlash_correction
if overshoot != 0:
self._stage.move_relative(z=overshoot)
# Move back to starting point if needed
if stack_parameters.backlash_correction != 0:
self._stage.move_relative(z=stack_parameters.backlash_correction)
# Capture images_to_save images # Capture images_to_save images
for move_count in range(stack_parameters.images_to_save): for move_count in range(stack_parameters.images_to_save):