Tagged “firmware”

Answer·Troubleshooting·October 24, 2026

Why do corners bulge on my prints?

Pressure left in the nozzle keeps pushing plastic out as the head slows for the corner. Tune pressure advance: Klipper ships it at 0 and Marlin with it disabled.

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Answer·Hardware·October 24, 2026

What is pressure advance smooth time?

A Klipper [extruder] setting: the window, in seconds, over which pressure advance is averaged. Default 0.040 s, maximum 0.200 s; larger is smoother but blurs corners.

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Answer·Troubleshooting·October 24, 2026

How do you know if pressure advance is too high?

Rounded corners, lines that thin into a corner and gaps between perimeters mean pressure advance is too high: lower it. Over 0.200, Klipper's extruder may skip.

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Answer·Hardware·October 24, 2026

How do you read a pressure advance test?

Pick the band, line or corner that prints most evenly. On a tower, value = start + height x step: OrcaSlicer's example is 0 + 8 mm x 0.002 = 0.016.

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Answer·Hardware·October 24, 2026

What does linear advance do?

It runs the extruder ahead as the head speeds up, so lines keep full width. K sets how much: about 0.1 to 2.0 in Marlin, set with M900 K; M900 K0 turns it off.

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Answer·Hardware·October 24, 2026

What is pressure advance in 3D printing?

A firmware setting that pushes extra filament in as the head speeds up and pulls it back as it slows. Klipper ships it at 0 (off); typical values are 0.050 to 1.000.

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Answer·Troubleshooting·October 20, 2026

What does an HMS error mean on a Bambu Lab printer?

An HMS error is a Health Management System alert. Its 16-character code names the module that raised it and the severity, and its wiki page gives the fix.

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Answer·Troubleshooting·October 20, 2026

Why does my 3D printer say heating failed bed?

Marlin halts if the bed gains less than 2 °C in 60 s after a heat command. Check the bed's power terminals and solder joints first, then the board output and supply.

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Answer·Troubleshooting·October 20, 2026

What does the heating failed error mean on a 3D printer?

The hotend warmed too slowly after a heat command, so the printer halted. Marlin 2.1.1 and later want 2 °C in 40 s. A damaged or loose heater cable is the usual cause.

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Answer·Troubleshooting·October 20, 2026

What does a homing failed error mean on a 3D printer?

The axis never triggered its endstop or probe. Marlin and Klipper search 1.5 times the axis travel, then stop: check the switch, the probe and the mechanics.

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Answer·Troubleshooting·October 20, 2026

Why does Klipper say extrude below minimum temp?

Klipper blocks every extruder move while the hotend reads below min_extrude_temp, 170 °C by default. Usually a macro extruded before M109 finished heating.

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Answer·Troubleshooting·October 20, 2026

What does an MCU timeout mean in Klipper?

Klipper's host stopped hearing a board: a 5th unanswered clock query, sent every 0.98 s, trips it. Check the USB cable, power and noise, then FIRMWARE_RESTART.

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Answer·Troubleshooting·October 20, 2026

What is a MINTEMP error, and is it dangerous?

MINTEMP is a safety shutdown: Marlin trips below 5 °C, usually from an unplugged or broken thermistor wire. What to check, including a Prusa MK4 after a nozzle swap.

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Answer·Troubleshooting·October 20, 2026

What causes a thermal runaway error on a 3D printer?

A heater stayed below target too long (Marlin: 4 °C for 40 s). Usual causes: a loose thermistor, heater or wiring fault, fan on the block or untuned PID.

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