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Introduction

Mellow Fly-D5 is a high-performance 3D printer motherboard launched by the Fly3D mainboard R&D team of Guangzhou Millun Electronic Technology Co., Ltd, supporting up to 5 stepper motors.

1. Product Features​

  • Equipped with a 32-bit ARM Cortex-M0+ series STM32F072RBT6 main control chip running at 48MHz
  • Supports CAN bus connection, providing more stable data transmission, lower latency, and more stable connections
  • Driver support: A4988, LV8729, DRV8225, TMC2208/2209/5160, etc.
  • Onboard DIAG function pins, allowing for easy use of endstop support through simple jumper cap insertion/removal

2. Product Specifications​

  • MCU: STM32F072RBT6
  • Firmware: Klipper/Marlin
  • Power Supply: 12-24V DC, providing more stable power supply and eliminating the need for a voltage drop module
  • Driver Operation Modes: SPI, UART, STEP/DIR
  • Supported Drivers: External TMC5160Pro, TMC5160, TMC2209, TMC2225, TMC2226, TMC2208, TMC2130, A4988, etc.
  • Expansion Interfaces: BLTouch (Servos, Probe), UART X1, 12864 X1
  • Fans: Two controllable fans X2, Parallel fans X2, Always-on fans X2
  • Temperature Sensors: Two NTC 100K channels
  • Heating Interfaces: Two controllable interfaces supporting up to 10A
  • Supported Machine Structures: Cartesian, Delta, Kossel, Ultimaker, CoreXY