FLY-D8 Mainboard Introduction
The Mellow Fly-D8 is a high-performance 3D printer control mainboard launched by the Fly3D mainboard R&D team of Guangzhou Mellow Electronic Technology Co., Ltd. It supports up to 8 stepper motor drivers.
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Product Overview
The FLY-D8 is a main control board based on the high-performance ARM Cortex-M4 core of the STM32F407, specifically designed for multi-axis, high-precision 3D printers. The board features rich interfaces, comprehensive protection functions, and good expandability. It supports Marlin 2.0 and Klipper firmware, making it suitable for DIY upgrades or the development of next-generation printers.
Main Features
- Core Performance: Utilizes the STM32F407VGT6 chip with a 32-bit ARM Cortex-M4 core running at 168MHz, offering strong computing power.
- Rich Interfaces: Supports 8 motor drivers, 6 limit switches, 4 heating and thermistor connections, and 2 RGB light strips, providing high expandability.
- Reliable Connectivity: Supports CAN bus and RS232 communication for stable data transmission with low latency.
- Safety Protection:
- Power input features reverse connection protection.
- The 5V supply for interfaces like limit switches uses an isolated design; it does not output when the main power is not connected, preventing damage from incorrect operations.
- Convenient Debugging: Onboard BOOT and RESET buttons allow easy entry into DFU mode via USB for firmware flashing.
- Dual USB Design: Provides two USB 2.0 interfaces. One can be physically switched to an RS232 interface, adapting to various external devices.
Technical Specifications
| Item | Description |
|---|---|
| Main Controller | STM32F407VGT6 (ARM Cortex-M4 @ 168MHz) |
| Supported Firmware | Marlin 2.0 / Klipper |
| Driver Support | 8 channels, compatible with A4988, LV8729, DRV8225, TMC2208/2209/5160 (UART/SPI), etc. |
| Display Interface | Serial touch screen, mini12864 LCD, 12864 LCD, 2004 LCD, FLY 4.3/7.0 V1 |
| Probe Support | Auto-leveling sensors like BLTouch, PL08N, Klicky, Voron Tap, etc. |
| Input Voltage | DC 12V or 24V |
| Temperature Sensing | 4 independent thermistor interfaces |
| Heating Output | 4 channels (1 for heated bed + 3 for extruder heaters) |
| Other Interfaces | 6 limit switch interfaces, 2 RGB interfaces, CAN bus interface, USB/RS232 switchable interface |
Interfaces and Connections
- Power: Uses reverse-protection terminals, supports 12V/24V input.
- Motor Drivers: 8 independent driver slots supporting various stepper driver modules.
- Communication: Supports USB, CAN, and RS232, allowing flexible configuration as needed.
Precautions
| Output Port | Max Current @ 24V Power | Max Current @ 12V Power |
|---|---|---|
| Heated Bed Port | 10A | 5A |
| Heater Cartridge Port | 6A | 3A |
| Fan Port | 1A | 0.5A |
- Ensure the power supply voltage and current meet the above requirements to avoid overload.
- Before connecting the power supply, double-check the polarity to prevent reverse connection.
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