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v1.4.5 stable (Marlin 1.1.9)
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@davidramiro davidramiro released this 25 Mar 21:51
· 51 commits to master since this release
v1.4.5
a2c47b5
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davidramiro David Ramiro
GPG key ID: 5B042737EBEEB736
Learn about vigilant mode.

  • Implemented optional startup chime

    • Enable STARTUP_CHIME in Configuration.h to play a short chime on Trigorilla startup/serial connection, disabled by default

  • Implemented optional endstop beeps

    • Enable ENDSTOP_BEEP in Configuration.h to enable a 2KHz beep when endstops are hit, disabled by default.

  • Adjusted PWM frequencies to better match FDD8780, WSK220N04 and VS40200ATD MOSFET spec.

    • Heater PWM frequency increased from 7.6294 Hz to 30.5176 Hz
    • Referencing the Forward Bias Safe Area from the MOSFET's datasheets, this value should be safer.
    • Use software PWM for fans to reduce whine
    • The higher PWM frequency works well with the stock parts cooling fan and might allow for better control of third party fans

  • G26 Gcode:

    • Changed Q parameter to only specify retraction length
    • Added Z parameter for unretraction length
    • Preserved fixed multiplier of 1.2 if Z isn't specified
    • Added check to avoid implausible retract/unretract ratios
    • Changed default config values

A PID tune might be necessary after this update. Also updated default values to M301 P18.58 I1.38 D62.40 and M304 P187.45 I35.75 D245.71.

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