Release 2.3.0 of BQ Marlin firmware for 3D Printers

BQ Marlin v2.3.0

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Bugfixes:

• Fixed: serial commands with filename data fail when sent with line number (W/H/HXL/W2/H2).
• Fixed: M20 doesn't return folders with very short names (W/H/HXL/W2/H2).
• Now when hit a wrong line number error, will also return OK message (W/H/HXL/W2/H2).
• Improved opening files in the SD card deeper than two folders using serial commands with absolute paths (W/H/HXL/W2/H2).
• Completed prints statistic is not increased if a print has not been previously started (W2/H2).
• Analogue control re-enabled for blower fan (W/H/HXL).
• Corrected Hephestos 2 "Extruder steps per unit" value on configuration (H2).

Improvements:

• Erasing EEPROM through serial shows EEPROM erasing screen in LCD (W2/H2).
• Changed rest position (W/H/HXL).
• Added support for custom builds with filament sensor (H/HXL/H2).
• Reduced motor noise (W/H/HXL/W2/H2).
  Stepper management changes:
  • 16 steps per interrupt for 32 usteps.
  • Maximum Frequency: 1.667 KHz
  • Maximum Step Multiplier: x16
  • Maximum Steps/Second: 26.667 Kstep/s
  • Maximum Axis Speed (32 usteps): 167 mm/s
    Note: a new configuration option, PREFER_MAX_SPEED, is available in the configuration files to allow custom builds with previous stepper control profile.

New features:

• New screen will remind to replace the PTFE tube every 250 hours of printing (W2/H2).