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Firmware 1.2.2-FINAL for Original Prusa SL1  

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Jakub Dolezal
(@jakub-dolezal)
Member Admin
Firmware 1.2.2-FINAL for Original Prusa SL1

Hi guys,
this is a final version of the firmware recommended to all users 😎 Note that this update is sent primarily via OTA (over-the-air). Before flashing the firmware manually, check your internet connection on the SL1 first.

What is new?

  • Print quality improvements
  • Vibration elimination while printing
  • Blower fan fixes
  • Others

A detailed description of changes:

Print quality improvements

For this release, we have prepared improvements regarding print quality. First, the tank is now calibrated at a full-step of the stepper motor. At this position, the motor has the biggest holding torque. Note that your printer may require recalibration after this update. You will be informed before the next print.

In the previous release, the printer lowered the current in the motors after finishing a movement. This current adjustment caused in some scenarios slight jerks of the motor. In this release, the current level isn't lowered to keep the motor stable.

The last improvement is regarding the rehoming procedure. Until this release, the rules were allowing for multiple rehoming procedures during the print, which weren't necessary. Latest release performs rehoming only if needed.

Vibration elimination while printing

Some printer's tanks were vibrating while moving during the prints. The current levels we optimized to increase torque in the motor and effectively dampen the vibrations.

Blower fan fixes

Right side blower fan RPMs were optimized for this release. The previous peak value of about 4200 RPM was lowered to 3700 RPM to meet the optimal working range of the fan. As a result, the level of noise was reduced.

The second fix is included in the initial Wizard, which was previously strict and sometimes didn't give the fan enough time to spin to its max. speed. This then resulted in a failed self-test. New Wizard gives the fan more time but still insists on the target RPM.

Others

  • Faster tilt movement in calibration

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Supported printers:

  • Original Prusa SL1

Download link:

prusa3d.com/drivers/

Please report any bug here:

https://github.com/prusa3d/Prusa-Firmware-SL1/issues

 

As always, we wish you happy printing and look forward to your feedback!

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Posted : 27/09/2019 11:31 am
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