BIGTREETECH SKR Mini E3 V3.0 32 bit control board adoptes the G0 series MCU-STM32G0B1RET6 or STM32G0B0RET6 ARM Coretex. integrated TMC2209 Silent stepper motor drive. Support runing Klipper&Marlin. BIGTREETECH SKR MINI E3 V3.0 control board integrated ultra silent TMC2209 uart stepper driver, designed for Ender 3, plug and playing. Compatible with for Ender 5/for Ender 5 Pro/for Ender 3 V2 3D Printer, the firmware is pre-install well before we ship out, you can select the firmware base on your needs. BIGTREETECH BTT Pi V1.2 board adopts ALLWINNER H616, 64-bit Quad-core, Cortex-A53 1.5GHz Processor, RAM is 1GB DDR3L SDRAM. Size is 85x56mm, the same as the for Raspberry-Pi 3B/4B. Making it a seamless fit for your existing projects. BTT Pi V1.2 core board display adopts MaliG32 MP2 GPU, support for OpenGL3.2 and HDMI2.0A UHD 4K Video & Audio output and SPI screen(BTT HDMI5/7, TFT35 SPI), onboard 4xUSB2.0 port. Powerful high performance details and clarity. Rich Connectivity: Onboard standard 40-pinGPIO header, 3.5mm audio jack, TF card slot, adxl345 spi, USB to CAN module(requires CAN adapter V1.0 module). Built-in IR receiver. RJ45 port support a 100Mbps wired network, built-in 2.4G Wifi module, supports 100Mbps wireless network, users can connect the inlculde wifi antenna to get a stronger and more stable Wifi signa. Colour:Photo Color Material:plastic Package Contents: 1 x Motherboard Control Board 1 x Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.