BigTreeTech Scylla V1.0
STM32H723-based CNC engraving machine control board with 4x TMC2160 drivers (24-56V/4.7A RMS), RepRapFirmware support, ESP32 WiFi, USB-C, RS-485, CAN bus, VFD spindle control, and relay output.
$88.00
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Specifications
Components
Four Trinamic TMC2160 SPI-mode stepper drivers (X/Y/Z/A) supporting 24-56V and 4.7A RMS, with integrated heatsink
Single mechanical relay with COM, NO, and NC terminals for controlling mains or external high-current devices
Onboard header for ESP32 WiFi module enabling RRF wireless access and grblHAL telnet sender channel
Bus Interfaces
The BigTreeTech Scylla V1.0 is a professional-grade control board for CNC engraving machines, running RepRapFirmware on a high-performance 32-bit ARM Cortex-M7 STM32H723VGT6 microcontroller at 550MHz. This powerful MCU ensures smooth real-time motion control even with complex multi-axis toolpaths.
Four onboard TMC2160 stepper drivers (X, Y, Z, A axes) operate in SPI mode with DIAG support, each capable of 24-56V input and 4.7A RMS continuous current (6.7A peak). A large red heatsink covers all four drivers to maintain thermal performance under sustained heavy loads. Power architecture uses three independent inputs: V-Motor (DC 24-56V, 10A), V-MCU (DC 24-56V, 3A), and V-MOS (DC 24-56V, 10A) — all with reverse polarity and overvoltage/overcurrent protection.
The board features comprehensive I/O: 8 optoisolated endstop inputs, 3 auxiliary high-current FET outputs (AUX0/1/2) plus MIST and COOL outputs, 1 mechanical relay (COM/NO/NC), 2 probe/tool optoisolated inputs supporting PNP/NPN, VFD spindle interface (0-10V analogue + digital direction + enable), USB Type-C, RS-485 with ESD protection, CAN bus with ESD protection, I2C, UART, SPI, ESP32 WiFi module header, 1 RGB WS2812 output, and a MicroSD card slot. Currently supports RepRapFirmware with grblHAL and LinuxCNC (via Remora) planned.
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