Implement probe_liquid_heights in STARChatterboxBackend#997
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BioCam merged 2 commits intoPyLabRobot:mainfrom Apr 17, 2026
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Reads each container's tracked volume and converts to height via compute_height_from_volume. Parameters matching the real-backend signature are accepted but have no effect in simulation. Will be upgraded in PyLabRobot#949 (pipette batch scheduling refactor). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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What
Implements
probe_liquid_heightsonSTARChatterboxBackendby readingeach container's tracked volume and converting to height via
compute_height_from_volume. Previously the method did not exist onchatterbox — protocols calling it crashed under simulation.
Why
Keeps chatterbox at API parity with the real
STARBackendso protocolsthat probe liquid heights (e.g. input-volume sanity checks) run
unmodified under simulation.
Implementation
Returns a list of heights computed from the volume tracker. Parameters
matching the real-backend signature (
use_channels,resource_offsets,lld_mode,search_speed,n_replicates, traverse-height args,move_to_z_safety_after) are accepted for parity but have no effect —no physical probing happens in simulation.
Follow-up
Will be upgraded in #949 (Encapsulate pipette batch scheduling into
backend-agnostic module), which rewrites the real-backend
probe_liquid_heights. Once #949 lands, this chatterbox implementationwill be updated to match the new signature.