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fix(api): Lld math mistake round 2 (#15924)
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---------

Co-authored-by: caila-marashaj <[email protected]>
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ryanthecoder and caila-marashaj authored Aug 7, 2024
1 parent 604993f commit 6d9db72
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2 changes: 1 addition & 1 deletion api/src/opentrons/hardware_control/ot3api.py
Original file line number Diff line number Diff line change
Expand Up @@ -2717,7 +2717,7 @@ async def liquid_probe(
# probe_start_pos.z + z_distance of pass - pos.z should be < max_z_dist
# due to rounding errors this can get caught in an infinite loop when the distance is almost equal
# so we check to see if they're within 0.01 which is 1/5th the minimum movement distance from move_utils.py
while (probe_start_pos.z - pos.z) < (max_z_dist + 0.01):
while (probe_start_pos.z - pos.z) < (max_z_dist - 0.01):
# safe distance so we don't accidentally aspirate liquid if we're already close to liquid
safe_plunger_pos = top_types.Point(
pos.x, pos.y, pos.z + probe_safe_reset_mm
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4 changes: 2 additions & 2 deletions api/tests/opentrons/hardware_control/test_ot3_api.py
Original file line number Diff line number Diff line change
Expand Up @@ -958,7 +958,7 @@ async def test_liquid_probe_plunger_moves(
mount_travel_distance = mount_speed * mount_travel_time
max_z_distance -= mount_travel_distance

move_mount_z_time = (max_z_distance + probe_safe_reset_mm) / mount_speed
move_mount_z_time = (max_z_distance + probe_pass_z_offset_mm) / mount_speed
p_travel_required_for_z = move_mount_z_time * config.plunger_speed


Expand Down Expand Up @@ -1167,7 +1167,7 @@ async def _fake_pos_update_and_raise(
OT3Mount.LEFT, fake_max_z_dist, fake_settings_aspirate
)
# assert that it went through 4 passes and then prepared to aspirate
assert mock_move_to_plunger_bottom.call_count == 4
assert mock_move_to_plunger_bottom.call_count == 5


@pytest.mark.parametrize(
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