Reprap 32-Bit TMC2209 with 6 extruders

32-bit ARM Cortex-M4 series 168MHz, STM32F407ZGT6 chip
Firmware: Marlin 2.0
Driver support: A4988, LV8729, DRV8225, TMC2208 / 2209 etc., etc.
Driver mode support: TMC: UART / SPI
Support 9 independent motor drives, 6 extruders, 6 controlled fans, 3 uncontrolled fan sockets