CATALYST Motherboard Based ON ARM A55 & M4 support SPI and UART for Tmc2209 Voron V0 High Quality 3D Printer parts

!!! note The CM68 Core motherboard will be installed on the CATALYST Motherboard when shipped !!! ### CM68 Core - RK3568, Quad-core Cortex-A55 up to 2.0GHz - 2GB LPDDR4 - 32GB eMMC - 1000M Ethernet - 2 x USB3.0，1 x USB2.0 - CAN（with transceiver），LVDS， DSI，SPIs，UARTs ### STM32F401 MCU Control - 4x stepstick driver sockets (support SPI and UART) - Up to 4 channels NTC/PT1000 - 3-ways fan, support 5V, 12V, 24V hardware switching - 1x 24V signal input, 4 general IOs (with ADC capability) - Neo-pixel 5V RGB，15A MOS OUT（For Heat-Bed） More info：https://github.com/FYSETC/Catalyst_Kit