Voron3D Wiki

BTT SKR Series

Detailed information about BigTreeTech SKR series mainboards

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Overview#

The BigTreeTech (BTT) SKR series represents a popular line of 32-bit mainboards designed for 3D printers. These boards offer a good balance of features, performance, and price, making them suitable for various printer configurations.

Available Models#

SKR Mini E3 V3#

  • Processor: STM32G0B1
  • Stepper Drivers: 4x TMC2209
  • Connectivity: USB, UART
  • Price Range: $
  • Best For: Entry-level printers, Ender 3 upgrades

Where to buyaffiliate links

SKR Pro V1.2#

  • Processor: STM32F407
  • Stepper Drivers: 6x (configurable)
  • Connectivity: USB, UART, CAN
  • Price Range: $$
  • Best For: Mid-range printers, multi-extruder setups

Where to buyaffiliate links

SKR 3#

  • Processor: STM32F407
  • Stepper Drivers: 5x (configurable)
  • Connectivity: USB, UART
  • Price Range: $$
  • Best For: Standard printers, dual Z-axis setups

Where to buyaffiliate links

SKR Pico#

  • Processor: RP2040
  • Stepper Drivers: 4x (configurable)
  • Connectivity: USB, GPIO
  • Price Range: $
  • Best For: Entry-level printers, compact builds

Where to buyaffiliate links

Key Features#

Hardware Features#

  • 32-bit processors (except SKR Pico)
  • Multiple stepper driver support
  • Various connectivity options
  • Expandable through expansion boards
  • Multiple fan outputs
  • Heated bed control
  • Endstop inputs

Software Support#

  • Klipper firmware support
  • Marlin firmware support
  • Community firmware options
  • Extensive documentation
  • Active community support

Installation Guide#

Basic Setup#

  1. Mount the board in your printer
  2. Connect stepper motors
  3. Connect endstops
  4. Connect heaters and fans
  5. Flash firmware

Configuration#

Common Modifications#

Expansion Options#

  • CAN bus expansion
  • WiFi connectivity
  • Additional stepper drivers
  • Sensor integration

Community Mods#

  • Custom cooling solutions
  • Power supply modifications
  • Additional connectivity options
  • Custom firmware features

Troubleshooting#

Common Issues#

  1. Stepper motor issues
  2. USB connectivity problems
  3. Firmware flashing errors
  4. Power supply issues

Solutions#

References#

  1. BTT Official Documentation
  2. Community Modifications Database
  3. User Experience Reports