BIGTREETECH SKR Mini E3 V2.0 - 3D Printer Motherboard - STM32F103

This board is a very good basis for a DIY printer or as an upgrade for an Ender 3, the dimensions correspond to the original motherboard of an Ender 3 so you can easily replace it. The SKR Mini E3 V2.0 is driven by a 32-bit processor and has 4 silent integrated stepper motor drivers. The board has connections for autoleveling with e.g. BLTouch, filament detection and RGB LEDs (WS2812/Neopixel). In addition, the board supports sensorless homing. If you use this board on an Ender 3, it is not necessary to flash the firmware yourself, because it already contains Marlin 2.0.

Specifications:

• Supply voltage: 12 - 24V DC
• Microcontroller:
  • Chip: STM32F103
• Stepper motor drivers:
  • Quantity: 4 (X, Y, Z and extruder (the Z axis has two motor connectors but they share a driver))
  • Chip: TMC2209
  • Maximum RMS current per phase: 2A (adjustable in Marlin)
• Built-in microSD card adapter
• Connectors:
  • Power supply (POWER/DCIN (2x)): Screw terminal 2p
  • PC/Programming (USB): Mini USB
  • Heated bed (HB): Screw terminal 2p
  • Hotend (H0): Screw terminal 2p
  • X motor (XM): JST-XH 4p
  • Y-motor (YM): JST-XH 4p
  • Z motors (ZAM and ZBM (same driver)): JST-XH 4p
  • Extruder motor (EM): JST-XH 4p
  • Heated bed thermistor (THB (100K NTC)): JST-XH 2p
  • Hotend thermistor (TH0 (100K NTC)): JST-XH 2p
  • X-End Stop (X-STOP): JST-XH 2p
  • Y-end stop (Y-STOP): JST-XH 2p
  • Z-end stop (Z-STOP): JST-XH 2p
  • Filament detection (E0-STOP): JST-XH 3p
  • PWM fans (FAN0 and FAN1): JST-XH 2p
  • Neopixel lighting (NEOPIXEL): JST-XH 3p
  • Power failure fetection (PWR-DET): JST-XH 3p
  • Power detection (PS-ON): JST-XH 2p
  • Auto leveling (Z-PROBE): JST-XH 5p
  • Display (EXP1): Flat cable connector 2x5p
• Dimensions PCB: 100.75 x 70.25mm

Package contents:

• 1x SKR Mini E3 V2.0
• 1x Mini USB to USB-A cable (~30cm)
• 4x Heatsink for stepper driver
• 6x 2p jumper
• 1x Rubber duck

See the following page for more information: GitHub