BigTreeTech SKRat V1.0 Motherboard

The SKRat controller board is the result of a cooperation between Rat Rig and BTT. We found that no other boards on the market were currently offering all the power, connectivity and exact feature set in one place, so we set out to develop a new board based on our requisites.

With powerful DC rails to cover our demanding cooling needs, switchable fan voltages, flashing over USB, dedicated 5V Pi header, and lots of connectivity, the SKRat is a true powerhouse of a motherboard in a small package.

The SKRat is supported in RatOS 2.0 for an easy Klipper experience. Regarding printer compatibility, the SKRat is ideal for any Klipper based printer with requirements up to 5 drivers, perfect for the V-Minion as well as V-Core with toolboard setups.

Specs/features:

• 5 drivers - small form factor for small printers.
• Flashes via DFU over USB.
• 5/12/24V Individually selectable fan voltage
• 5A RMS / 6A peak 5V rail and dedicated Pi power header
• 3A 12V rail for powering 4028 fans
• 2x 4-pin fan headers, no more 100% fan speed before the board boots, easy wiring and opto-coupled tachometer pins.
• 4x 2-pin controllable fan headers
• Dedicated SPI header for ADXL345 connection
• MAX31865 for PT100 support.
• 5 Thermistors
• 2 Heater ports
• Neopixel port
• CANBUS port
• DIAG jumpers for all drivers
• Probe port with NPN support and selectable voltage.

Included:

• BigTreeTech SKRat V1.0 Motherboard
• Jumpers
• USB Cable Type A to USB-C
• Rubber Ducky

User Manual