3D Printer Control Board DC12‑24V Input 168Mhz 32 Bit Motherboard for Voron VS Spider Octopus Item Type: 3D Printer Control Board Material: PCB Input Power: DC12-24V, <30A 3D Touch: Supported Hardware: Supported for Marlin 2.0.X, for Klipper MCU: for STM32F407VET6, 168MHz, 512KB Flash, 192KB RAM Fuse: Pluggable External Step Signal: Available MOS Circuit Guard: Resistor and for Schottky Diode Guard Limit Circuit Guard: Resistor and for Schottky Diode Guard Temperature Circuit Guard: Resistor and for Schottky Diode Guard Motor Back EMF: Absorbed by Phase Sequence Resistors PA13 Pin: Used for MT DET PC5 Pin: Used for Neopixel E4 EN Signal: Same as E0 EN=PB6 Robin Wifi Interface: Available For MAX31865 Interface: Available, same as E4 axes signal For Pi Power Supply: Independent DC5V 3A Power Supply Limit Switch Power: Only Z+ can choose 5V or VIN, other limit switches are 5V For A4988 Driver Description: For A4988 is a complete microstepping motor driver with built in converter, easy to operate. It can drive bipolar stepper motors in full step, half step, 1/4, 1/8, and 1/16 step modes, with a high output driving capability of up to 35V and ± 2A. For A4988 includes a fixed off time current regulator, in slow or mixed decay modes. The for A4988 converter is key to easy implementation. The step input only needs one pulse to drive the motor forward one microstep. No need for a cross reference table, high frequency control lines, or complex programming interfaces. For A4988 interface is ideal for situations where complex microprocessors are not available or overly burdensome. For A4988 Driver Features and Benefits: Low RDS(ON) Output Automatic Current Decay Mode Detection, Selection Mixed With Slow Current Decay Mode Synchronous Rectification, Low Power Consumption Internal Undervoltage Lockout Crossover Guard 3.3V and 5V Compatible Logic Power Supply Thermal Shutdown Circuit Ground Fault Guard Load Short Circuit Guard