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Type 1: Only the board: 1PC SKR MINI E3 V2.0 32Bit Board Type 2: Alii Kits: 1PC SKR MINI E3 V2.0 32Bit Board+1PC TFT35 E3 V3.0 Touch Screen Introduction: BTT SKR MINI E3 V2.0 is a customized motherboard for Ender3 printer launched by the 3D printing team of BIGTREE technology co., LTD., which can perfectly replace the motherboard of the original Ender3 printer. More detailed about SKR MINI E3 V2.0 you can visit this website: https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/tree/master/hardware/BTT%20SKR%20MINI%20E3%20V2.0 BIGTREETECHSKR MINIE3 V2.0 A motherboard specially tailored for Ender3 printers, perfectlyreplacing the original Ender3 printer motherboard DIMENSIONS ADVANTAGES Main control chip ARM Cortex-M3 series STM32F103RCT6&RCT7 chip with 32-bit CPU 72MHZ ADVANTAGES Main control chip ARM Cortex-M3 series STM32F103RCT6 chip with 32bit CPU 72MHZ Double Z-axis interface Add parallel double Z-axis interface Enhanced stability The UART communication port driven by TMC2209 uses hardwareUART port (One drag four),enhance stability Compatibility Compatible models increase, suitable for Ender3, Ender3ProEnder 5 ,CR-10 Better protectionand safety design Increase the distance between the driving chip and thecomponents to avoid the trouble caused by the heat sink Support more function expansion Support BLtouch, filament detection, power-off resume, automaticshutdown (PS-ON),etc Add 5V power supply 5V power supply with BLtouch, TFT andRGB interfaces is optional. Increase the board layer to 4 layers lmprove heat dissipation signal function andanti-interference BETTER THERMALPERFORMANCE Increase the heat dissipationarea of the back driver and strengthentheheat dissipation capacity HOT BED MOS TUBE The hot bed MOS tube adopts WSK220N04, IowRDS-ON heat dissipationarea, reduce heat generation POWER CHIP Use MP1584EN power chip,support12-24V power input, maximumoutput current up to 2.5A Two CNC Fan interface Change an original FrequentFan to a CNC Fan，User-friendly Onboard Sensorless homing function You can use this function by plugging in the jumpcap，easy and convenient PRODUCT DISPLAY