Skip to content

3.5.2-RC1 Firmware for Prusa i3 MK3 and MK2.5

Pre-release
Pre-release
Compare
Choose a tag to compare
@PavelSindler PavelSindler released this 07 Feb 19:20
· 5607 commits to MK3 since this release
v3.5.2-RC1
26509b9
This commit was created on GitHub.com and signed with GitHub’s verified signature. The key has expired.
GPG key ID: 4AEE18F83AFDEB23
Expired
Learn about vigilant mode.

Summary:

  • More quiet print fan operation
  • Heatbed regulation improved
  • Improved heater temperature regulation
  • Spool join for multi-material prints
  • Smarter load/unload function
  • Mintemp for MK2.5 updated
  • SD card menu is shown automatically when the card is inserted
  • Safer communication between MMU2 and printer
  • Crash detection for zero target temperature fixed

Detailed description of changes:

More quiet print fan operation:

This change is significant especially for low fan speeds.

Heatbed regulation improved:

Heatbed PWM now works on a higher frequency. This helps to reduce the power supplies "clicking" noises.

Improved heater temperature regulation:

When changing temperatures during the print, temperature regulation was very slow in some cases led to preheat error. Regulation has been improved. This should solve issue #1362.

SpoolJoin for multi-material prints:

It is now possible to use the "SpoolJoin" function also with multi-material prints. If some filament is depleted, the printer replaces it with next filament for the rest of print (for example if filament 2 was depleted, the printer starts using filament 3 instead). If there is no filament which can be used (all filaments were depleted), the printer waits for the user to insert new filament manually.

Smarter load/unload function:

If a user chooses load (or unload) in the menu with a cold nozzle, nozzle preheat menu automatically appears. After selecting material, preheat starts. When the nozzle is hot and the printer is ready for a load, beeper signal occurs. This function is working on single material printers with load/autoload and unload. It is not currently implemented for multi-material printers (load to nozzle, unload and eject).

Mintemp for MK2.5 updated:

"Mintemp" is now checked after a short period of preheating. This is necessary for maximum reliability on all MK2.5 Rambo boards.

Assets 5