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| Size: | 110mm x 85mm. For details, please refer to: BIGTREETECH SKR 2-SIZE.pdf |
| Distance between installation hole centers： | 102mm*76mm |
| Microprocessor: | ARM Cortex-M4 CPU STM32F407VGT6 |
| Input voltage: | DC12V-DC24V |
| Logic voltage: | DC 3.3V |
| Firmware support: | Marlin, RepRap Firmware |
| WIFI interface: | ESP-12S, ESP-07S |
| Fan interfaces: | Three PWM fans, two always-on fans |
| Expansion interfaces: | I2C, Servos, Probe, PS-ON, PWR-DET, Fil-DET, RGB, etc |
| Motor driver: | support TMC5160, TMC2209, TMC2225, TMC2226, TMC2208, TMC2130, ST820, LV8729, DRV8825, A4988, etc., and can be externally connected to a motor drive. |
| Supported stepper driver interfaces: | SPI, UART, STEP/DIR |
| Motor driver sockets: | X, Y, Z (double Z axis), E0, E1, five channels (each channel also has a closed loop drive interface) |
| Temperature sensor interfaces: | TH0, TH1, TB. 3 Channels, 100K NTC (thermal resistance) |
| Display interfaces: | Serial touch screen, SPI touch screen, LCD display |
| PC communication interfaces: | USB type B with configurable BAUD |
| Command file format support: | G-code or according to the installed OS |
| Supported kinematics: | XYZ, delta, kossel, Ultimaker, corexy, etc. |
| Recommended software: | Cura, Simplify3D, pronterface, Repetier-host, Makerware |
