The LDO Leviathan V1.3 is a comprehensive control board built on STM32F446 architecture with native Klipper firmware support. It features dual power supplies (24V main, 24-48V for TMC5160 drivers), five TMC2209 and two TMC5160 stepper drivers for advanced motion control, four independent thermistor inputs, four PWM fan outputs with tachometer support, and dedicated heater outputs for hotend (180W) and heatbed (240W) applications. Additional capabilities include probe and filament sensor inputs, addressable RGB lighting control, three endstop inputs, and an expansion port offering ADC, UART, SPI/CAN connectivity with auxiliary power rails, ideal for complex multi-axis printer configurations and advanced sensor integration. Note: Order after 28/07/2025 are shipping newer V1.3 version. Documentation: Github: https://github.com/MotorDynamicsLab/Leviathan Guide for 1.3: https://ldomotion.com/guides/voron-leviathan-v1-3 Guide for 1.2: https://ldomotion.com/guides/voron-leviathan-v12 Resources: Manual Download Link Features (V1.3): (Changes) STM32H743 MCU (25 MHz crystal) Features (V1.2): Supports Klipper firmware STM32F446 MCU 1x Vin 24V Mainsupply (polarity and overvoltage protected) 1x Vin 24-48V TMC5160 supply (polarity and overvoltage protected) 5x TMC2209 onboard drivers (24V) 2x TMC5160 onboard drivers (24-48V), onboard 12V source for gate drive 4x Thermistor inputs 4x Fan outputs (with tacho signal support, 5/24V via jumpers) 1x Probe input (5/24V via jumper) 1x Filamentsensor input (5V tolerant) 1x Neopixel output 3x Endstop inputs (5V tolerant) 1x Hotend heater output (max. 180 W, 7.5 A) 1x Heatbed heater output (max. 240 W, 10 A) 1x dimmable LED-strip output (350mA constant current source) 1x EXP1 port 1x EXP2 port 1x Extension port (4x ADC, 1xUART, 1xSPI or 1xCAN, 10GPIO, [email protected], 5V0.5A, [email protected]) 1x STM32 programmer interface (backup) 1x USB-C interface 1x CAN Bus interface (MicroFit 3.0 connector) 1x RPi Powersupply (5-pin JST-XH connector with UART support) Mountig holes for RPi Zero 2W and RPi3/4 Better stepper driver cooling Dimensions 170x100mm, Mounting holes: 160x90m
