SKR MINi E3 V3.0 Control Board 32 Bit for 3D printer:
 
SKR MINI E3 V3.0 Control Board 32 Bit specially tailored for ender3 printers, perfectly replacing the original ender3 printer motherboard. It has added additional hardware improvements and enhancements on based on community feedback. This STM32F103RCT6 chip has more advantage when compared with   GD32F103RCT6 chip. Among other things, these improvements and enhancements  include two Z-axis interface ports, in addition to the 3D-printers already support by the V1.x boards, also compatible with CR-10S, CR-10 S4, CR-10 S5, Ender 5, Ender 5 Pro, and Ender 5 Plus from Creality.
 
Features:
Main control chip – ARM cortex M0 series STM32F103RET6 chip.
Power input- dc 12/24v.
Area of heat sink – bigger.
Pc communication interface – micro USB
Controlled fan – 3
SPI outlet power supply – 3.3/5v
Onboard EEPROM : 24C32.
Double Z-axis interface.