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Prusa-Firmware-MMU
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Removed PartiallyDisengage because it produce many stuck filament in MMU position 4 and 5. This probably work with official Core One MMU version but not with long PTFE tude one. The idler make pressure on the filament to fast before the extruder ejection...

pull/362/head
P1R4M4X 2026-08-30 15:19:14 +02:00
parent 48d4d920be
commit ac42b9af53
1 changed files with 2 additions and 11 deletions
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13
src/logic/unload_to_finda.cpp
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@ -18,9 +18,8 @@ void UnloadToFinda::Reset(uint8_t maxTries) {
if (!mf::finda.Pressed()) {
state = OK; // FINDA is already off, we assume the fillament is not there, i.e. already unloaded
} else {
// FINDA is sensing the filament, plan moves to unload it
// FINDA is sensing the filament
state = EngagingIdler;
mi::idler.PartiallyDisengage(mg::globals.ActiveSlot()); // basically prepare before the active slot - saves ~1s
started_ms = mt::timebase.Millis();
ml::leds.ActiveSlotProcessing();
}
@ -28,22 +27,14 @@ void UnloadToFinda::Reset(uint8_t maxTries) {
bool UnloadToFinda::Step() {
switch (state) {
// start by engaging the idler into intermediate position
// Then, wait for !fsensor.Pressed: that's to speed-up the pull process - unload operation will be started during the purging moves
// and as soon as the fsensor turns off, the MMU engages the idler fully and starts pulling.
// It will not wait for the extruder to finish the relieve move.
// However, such an approach breaks running the MMU on a non-reworked MK4/C1, which hasn't been officially supported, but possible (with some level of uncertainity).
case EngagingIdler:
if (!mi::idler.PartiallyDisengaged()) { // just waiting for Idler to get into the target intermediate position
return false;
}
if (mfs::fsensor.Pressed()) { // still pressed, printer didn't free the filament yet
if (mt::timebase.Elapsed(started_ms, 4000)) {
state = FailedFSensor; // fsensor didn't turn off within 4 seconds, something is seriously wrong
}
return false;
} else {
// fsensor is OFF and Idler is partially engaged, engage the Idler fully and pull
// fsensor is OFF and engage the Idler fully and pull
if (mg::globals.FilamentLoaded() >= mg::FilamentLoadState::InSelector) {
state = UnloadingToFinda;
mpu::pulley.InitAxis();