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Introduction

Mellow Fly-D8 is a high-performance 3D printer motherboard developed by the Fly3D mainboard R&D team of Guangzhou Mellen Electronic Technology Co., Ltd., supporting up to 8 stepper motor channels.

Product Features​

  • The motherboard's limit switch and other interfaces are isolated and protected with 5V power supply; if the POWER source is not connected, it will not output power.
  • It uses a 32-bit ARM Cortex-M4 series 168 MHz STM32F407 chip.
  • It supports CAN bus and RS232 connections for more stable data transmission with lower latency and more stable connections.
  • The motherboard has BOOT and RESET buttons reserved for users to enter DFU mode via USB for firmware updates.
  • The power interface has reverse polarity protection to avoid burning out the board due to reversed power connections during DIY.
  • It provides two USB 2.0 ports, expanding connection possibilities, with one USB port switchable to RS232 via a switch to accommodate various device connection needs.

Product Specifications

  • Main control chip: 32-bit ARM Cortex-M4 series 168 MHz STM32F407ZGT6 chip.
  • Firmware: Marlin 2.0/Klipper.
  • Drive mode support: TMC: UART/SPI.
  • Eight drive support: A4988, LV8729, DRV8225, TMC2208/2209/5160, etc.
  • Display: Serial touch screen, mini12864 LCD, 12864 LCD, 2004 LCD, FLY 4.3/7.0 V1.
  • Support for automatic bed leveling sensors: BLTouch, PL08N proximity sensors, Klicky, Voron Tap, etc.
  • Input voltage: Supports 12V/24V.
  • Six limit switch interfaces, enabling precise range limitation and position control.
  • Two RGB interfaces, providing colorful visual effects.
  • Three heating element interfaces, offering independent control for the extruder and heated bed.
  • Four thermistor interfaces, capable of monitoring up to four temperature groups simultaneously for precise temperature control.
  • USB interface: Supports two USB 2.0 ports, with one USB port switchable to RS232 via a switch.
  • It provides two USB 2.0 ports, expanding connection possibilities, with one USB port switchable to RS232 via a switch to accommodate various device connection needs.