Features: High speed printing kit：equipped with OctopusPro H723 control board and PIV1.2 mainboard with 5 pieces of TMC2209+2 pieces of TMC5160T Pro motor driver kit. Very suitable for Voron 2.4 3D printers and CoreXYC and 3D printers; forOctopusPro H723 control board adopting the latestARM CortexM4 series STM32H723ZET6 32-bit microcontroller, 550MHz with 512Kb flash,More stable and fast processing. Multi functional upgraded with forOctopus pro h723 MAX31865, supporting 2/4-wire PT100/PT1000 temperature measurement without welding The BTT PIv1.2 mainboard adopts ALLWINNER H616, 64 bit 4cores, CortexA53 1.5GHz processor, and 1GB DDR3L SDRAM. The size is the same as for Pi3B/4B, and the display screen adopts MaliG32 MP2GPU. It supports OpenGL3.2 and HDMI2.0A UHD 4K video andaudio output andSPI screen, with 4 USB2.0 ports d. Multi functional connection: BTT PIv1.2 with standard 40pin GPIO connector, 3.5mmaudio, card slot, RJ45 port supporting 100Mbps corded networking, built-in 2.4G module, etc The motor driver is equipped with 5 TMC2209 motor driver and heat sinks. Specifications: Item ： 3D Printer Octopus Pro H723 Contol Board Kit for Voron 2.4 3D printers and CoreXYC 3D printers The forOctopus Pro H723 control board adopting the latestARM CortexM4 series STM32H723ZET6 32-bit microcontroller, 550MHz with 512Kb flash The BTT PI1.2 mainboard adopts ALLWINNER H616, 64 bit 4cores, CortexA53 1.5GHz processor, and 1GB DDR3L SDRAM. Size: Mixed As Pictures Package Includes: 1PC Octopus Pro H723 Control Board 1PC PIv1.2 Mainboard 5PCS TMC2209 1.3 Motor 2PCS TMC5160T Motor Driver Kit note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurme