BIGTREETECH

SKR 3 EZ

SKR 3

SKR 2

MCU

STM32H743VIT6, 480MHz

STM32H743VIT6, 480MHz

STM32H407VIT6, 168MHz

Power regulator

TPS5450, 5A

TPS5450, 5A

AOZ1284PI, 4A 

Firmware support

Marlin, Kipper, RRF

Marlin, Kipper, RRF

Marlin, RRF

New EZ socket

✔

/

/

Individual driver voltage selection

MOT/VIN 48V MAX

/

/

Fan voltage selection

24V/12V/5V voltage selection
(optional external module needed for voltage selection)

24V/12V/5V voltage selection (optional external module needed for voltage selection)

/

Jumper selectable 4k7/1k pull up for PT1000 sensors

4k7/2k2

✔

/

CAN-Bus interface

✔

✔

/

Thermistor protection

✔

✔

✔

TMC Diag jumpers

✔

✔

✔

Fan ports

3 PWM fans, 3 always-on fans

3 PWM fans, 3 always-on fans

3 PWM fans, 3 always-on fans

Flyback protection

✔

✔

/

Thermal runaway protection

✔

✔

✔

Fuses

Automotive

Automotive

SMD

Double Z-axis

✔

✔

✔

Motor driver support

EZ5160 Pro, EZ2209, EZ2208, EZ2225, EZ2226, EZ2130, EZ6609, TMC5160, TMC2209, TMC2225, TMC2226, TMC2208, TMC2130

Expansion interfaces

I2C, PS-ON, PWR-DET, Fil-DET, RGB, BL Touch etc