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FLSUN S1 Pro setup guide
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FLSUN_S1_Pro_setup.md

FLSUN S1 PRO Software Setup Guide: Current Best Solutions and Recommendations

The FLSUN S1 PRO faces significant software challenges that require careful consideration of alternatives. Here's a comprehensive guide to the current best solutions for addressing these issues.

Current Software Issues with FLSUN S1 PRO

The FLSUN S1 PRO has several documented software problems that users consistently encounter:

FLSUN Slicer 2.0 Problems

  • The official FLSUN Slicer 2.0 is frequently described as "clunky" and problematic12
  • Users report installation difficulties and poor interface design2
  • Limited profile availability and poor documentation3
  • Inconsistent slicing results compared to other software4

Firmware and Hardware Issues

  • VFA (Vertical Fine Artifacts) or "salmon skin" texture on prints due to closed-loop stepper compensation56
  • Poor first layer adhesion and inconsistent bed leveling37
  • AI features that don't work as expected8
  • Power management issues where the printer doesn't fully shut down4

Recommended Software Solutions

1. FLSUN S1 Open Source Edition by Guilouz (Primary Recommendation)

The FLSUN S1 Open Source Edition created by community developer Guilouz represents the most comprehensive solution for S1 PRO software issues9108.

Key Features:

  • Complete OS replacement based on Debian 12 Bookworm with support until June 20288
  • Latest Klipper, Moonraker, and KlipperScreen implementations8
  • Enhanced Delta Calibration with improved accuracy and better detection of bed variations8
  • Improved Power Loss Recovery that preserves all settings and resumes exactly where printing stopped8
  • M600 filament change support and drying box control from web interfaces8
  • Adaptive Bed Heating that heats only the required bed area based on model size8
  • SSH access for advanced configuration8
  • Removal of problematic AI features while keeping functional ones like Power Loss Recovery8

Installation Process:

  1. Prepare microSD card (16GB or larger) for FLSUN OS
  2. Flash motherboard firmware using STM32 ST-LINK programmer
  3. Flash closed-loop boards (recommended for S1 users, not S1 Pro users)
  4. Boot from microSD card or install on eMMC memory
  5. Configure printer through the setup wizard8

Benefits:

  • Dual boot capability - easy to revert to stock OS8
  • Better performance with access to full 1GB RAM (vs 700MB stock)8
  • Quieter operation through improved motor control10
  • Professional interface with KlipperScreen replacing stock interface8

2. Orca Slicer with Community Profiles

Orca Slicer Setup: FLSUN provides official Orca Slicer configuration files that can be downloaded and imported11.

Installation Steps:

  1. Download configuration files from FLSUN's official link11
  2. Open Orca Slicer and navigate to File → Import → Import Presets
  3. Import the printer configuration file
  4. Import the S1.svg bed texture file for proper visualization11
  5. Restart Orca Slicer to complete setup11

Community Profiles:

  • Enhanced profiles available through GitHub repositories like Guilouz's project12
  • Better slicing results compared to FLSUN Slicer according to user reports4
  • More control over print settings and advanced features13

3. PrusaSlicer Profiles by Martona

For users preferring PrusaSlicer, community member Martona has created comprehensive profiles1415.

Features:

  • Official FLSUN settings ported to PrusaSlicer format14
  • All FLSUN printers supported including S1 PRO15
  • Easy installation through PrusaSlicer Configuration Wizard14
  • Speeds and extrusion parameters match FLSUN-published values14

Installation:

  1. Download profiles from GitHub releases14
  2. Start PrusaSlicer Configuration Wizard
  3. Point to downloaded .zip file in Local Configuration Sources section14

Hardware Upgrades for S1 PRO

Silent Module Upgrade

The FLSUN S1 Upgrade Silent Module addresses one of the most significant hardware issues1617.

Benefits:

  • 20dB noise reduction from stock CPAP cooling system17
  • Maintains cooling performance while operating quieter17
  • High-pressure cooling fan with more efficient design17
  • Internal muffler design reduces airflow friction noise17

Compatibility: Works with both S1 and S1 PRO models17

Motherboard Firmware Updates

Closed-Loop Stepper Firmware: The open source firmware includes options to flash closed-loop steppers with S1 PRO firmware to reduce VFA artifacts10.

Benefits:

  • Reduced salmon skin texture on print surfaces 10
  • Improved surface quality especially on outer walls 10
  • Better motion control through updated stepper algorithms 10

Current Profile Recommendations

Recommended Print Settings for S1 PRO

PETG Settings (Based on Community Feedback):3

  • First Layer Speed: 20-30 mm/s
  • Normal Print Speed: 50-80 mm/s
  • Travel Speed: 500-800 mm/s
  • Acceleration: 3000-5000 mm/s² for normal printing
  • Fan Speed: 70-80% minimum, 80-90% maximum
  • Nozzle Temperature: 230-240°C (250°C first layer)
  • Bed Temperature: 70-80°C

PLA-HS Speeds (FLSUN Recommendations):18

  • Print Speed: Up to 800 mm/s
  • Flow Rate: Optimized for high-speed printing
  • Temperature: Adjusted for high-speed extrusion

Installation Priority Recommendations

Immediate Actions (High Priority)

  1. Install FLSUN S1 Open Source Edition - This addresses the majority of software issues and provides the most stable experience8
  2. Set up Orca Slicer with official FLSUN profiles as backup slicer11
  3. Configure SSH access for advanced troubleshooting8

Secondary Upgrades (Medium Priority)

  1. Install Silent Module if noise is a significant concern17
  2. Flash closed-loop stepper firmware to reduce VFA artifacts10
  3. Set up community profiles for PrusaSlicer as additional option14

Optional Enhancements (Low Priority)

  1. BigTreeTech MMB Cubic for chamber temperature monitoring8
  2. Smart Filament Sensor V2.0 for enhanced filament detection8
  3. Spoolman integration for filament management8

Where to Find Current Information

Primary Resources:

Community Support:

  • Discord Server: Active community support for open source firmware 19
  • Reddit: r/FLSUNDelta for user experiences and troubleshooting 15
  • YouTube: ModBot and other channels for installation tutorials 10

The FLSUN S1 PRO's software challenges are well-documented, but the community has developed excellent solutions. The FLSUN S1 Open Source Edition represents the most comprehensive fix for these issues, providing a stable, feature-rich alternative to the problematic stock firmware. Combined with proper slicer setup and optional hardware upgrades, users can achieve the high-speed, high-quality printing the S1 PRO was designed to deliver.

⁂

Footnotes

  1. https://wiki.flsun3d.com/en/FlsunSlicerV202 ↩ ↩2

  2. https://www.youtube.com/watch?v=A_DEoU2g63o ↩ ↩2

  3. https://www.reddit.com/r/3Dprinting/comments/1hmwmn1/flsun_s1_print_settings/ ↩ ↩2 ↩3

  4. https://www.youtube.com/watch?v=lC2WMuoT-Pw ↩ ↩2 ↩3

  5. https://groups.google.com/g/rssc-list/c/h4LUiAzzK8s ↩

  6. https://www.reddit.com/r/3Dprinting/comments/1h6onte/flsun_s1_sucks/ ↩

  7. https://www.reddit.com/r/3Dprinting/comments/1g5xfo2/flsun_s1_need_help/ ↩

  8. https://guilouz.github.io/FLSUN-S1-Open-Source-Edition/about/ ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14 ↩15 ↩16 ↩17 ↩18 ↩19 ↩20

  9. https://github.com/Guilouz/Guilouz ↩

  10. https://www.youtube.com/watch?v=7gi3iW-Vf5w ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8

  11. https://wiki.flsun3d.com/en/OrcaimportS1configurationfile ↩ ↩2 ↩3 ↩4 ↩5

  12. https://github.com/Guilouz/Flsun-S1-T1 ↩ ↩2

  13. https://www.youtube.com/watch?v=cquTCpz1V74 ↩

  14. https://github.com/martona/flsun-prusaslicer-profiles ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  15. https://www.reddit.com/r/FLSUNDelta/comments/1dx034q/s1t1v400q5srqqs_profiles_for_prusaslicer/ ↩ ↩2 ↩3

  16. https://wiki.flsun3d.com/en/S1UpgradeSilentKit ↩

  17. https://store.flsun3d.com/products/flsun-s1-upgrade-silent-module ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7

  18. https://www.youtube.com/watch?v=8iNJ3EV0riM ↩

  19. https://www.youtube.com/watch?v=oh9SMjGzRhY ↩

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