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Introduction

Mellow Fly-D8 is a high-performance 3D printer motherboard launched by the Fly3D motherboard R&D team of Guangzhou Meilun Electronic Technology Co., Ltd., supporting up to 8 stepper motors.

Product Features​

  • The motherboard's limit switch and other interfaces have 5V power supply isolation protection; if the POWER supply is not connected, no power will be output.
  • Uses a 32-bit ARM Cortex-M7 series STM32H723 main control chip with a 550MHz clock speed.
  • Supports CAN bus and RS232 connections for more stable data transmission, lower latency, and more stable connections.
  • The motherboard has reserved BOOT and RESET buttons; users can enter DFU mode via USB to update the firmware.
  • The power interface has reverse polarity protection to prevent the board from burning out due to reversed power lines during DIY.
  • Provides two USB2.0 interfaces, expanding more connection possibilities; one USB interface can be switched to RS232 via a switch to meet the connection needs of various devices.

Product Parameters

  • Main control chip: Uses a 32-bit ARM Cortex-M7 series STM32H723 main control chip with a 550MHz clock speed.
  • Firmware: Marlin 2.0/Klipper.
  • Drive mode support: TMC: UART/SPI.
  • Supports eight drivers: A4988, LV8729, DRV8225, TMC2208/2209/5160, etc.
  • Display: Serial touchscreen, mini12864 LCD, 12864 LCD, 2004 LCD, FLY 4.3/7.0 V1.
  • Supports automatic bed leveling sensors: BLTouch, PL08N and other proximity sensors, Klicky, Voron Tap, etc.
  • Input voltage: Supports 12V/24V.
  • 6 limit switch interfaces, enabling precise range limitation and position control.
  • 2 RGB interfaces, providing colorful visual effects.
  • 3 heater interfaces, offering independent control for the extruder and hotbed.
  • 4 thermistor interfaces, capable of simultaneously monitoring up to four sets of temperatures for precise temperature control.
  • USB interface: Supports two USB2.0 interface expansions, one of which can be switched to RS232 via a switch.
  • Provides two USB2.0 interfaces, expanding more connection possibilities; one USB interface can be switched to RS232 via a switch to meet the connection needs of various devices.