moggieuk

@moggieuk source repo

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Kconfig Menuconfig · moggieuk bundle
How to modify Happy Hare's Kconfig/menuconfig installer — the Kconfig tree under installer/, the HH-extended kconfiglib fork, the .mmu_config value flow (menuconfig → pickle → Jinja templates → merged .cfg), and the symbol-naming contract (PARAM_/PIN_/BOOL_/MMU_HAS_/CHOICE_/UNSELECT_ and the

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Nfc Rfid Subsystem · moggieuk bundle
Explains Happy Hare's NFC/RFID subsystem — the driver abstraction for pn532/pn5180/pn7160/rc522 readers, jog_scan mechanics, and shipped reader-pair sharing — plus a clearly-flagged PROPOSED, UNMERGED, untested-on-hardware design for mitigating RF-crosstalk between neighbouring gate readers (a "noisy neighbour" classification ladder and eviction-by-jogging) that a future contributor may need to resume rather than re-invent. Use this whenever touching NFC/RFID reader code, mmu_nfc_manager.py, reader_factory.py, jog_scan, Spoolman tag lookups or auto-create, nfc_readers config, or debugging cross-gate tag misattribution — even for something as simple as "the NFC reader isn't detecting the right spool" or "how do I wire two gates to one reader."

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Gate Endstop Invariants · moggieuk bundle
Explains the shared-gate endstop occupancy invariant in Happy Hare's extras/mmu code — the rule that gate_homing_endstop values shared across gates on a unit (mmu_shared_exit, extruder, encoder) must never be homed or swept into while a different gate's filament still occupies them, and how gate_parking_distance sign validation is re-checked when gate_homing_endstop changes live. Use this whenever touching gate homing, gate endstops, gate_parking_distance, crossload logic, mmu_filament_movement.py, or shared-gate/shared-exit sensor behavior in extras/mmu/ — even if the request doesn't mention "invariant" or "occupancy" by name, e.g. adding a new endstop type, changing parking/recovery logic, or debugging a jam or tangle at a hub.

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