Introduction

Fly-D7 is a high-performance 3D printer motherboard developed by the Fly3D motherboard R&D team at Guangzhou Meilun Electronics Technology Co., Ltd., supporting up to 7 stepper motors.

1. Product Features

• Uses ARM Cortex-M0+ series STM32F072RBT6 main control chip with a 32-bit architecture and 48MHz clock speed
• Supports CAN bus connection for more stable data transmission, reduced latency, and improved connection stability
• Driver support: A4988, LV8729, DRV8225, TMC2208/2209/5160, etc.
• Onboard DIAG function pin allows unlimited homing support by simply inserting/removing a jumper cap

2. Product Specifications

• MCU: STM32F072RBT6
• Firmware: Klipper/Marlin
• Supports 12-24V DC power supply for more stable power delivery, eliminating the need for a voltage reduction module
• Driver operation modes supported: SPI, UART, STEP/DIR
• Supported drivers: External TMC5160Pro, TMC5160, TMC2209, TMC2225, TMC2226, TMC2208, TMC2130, A4988, etc.
• Expansion interfaces: BLTouch (Servos, Probe), UART x1
• Fans: Two controllable fans x2, parallel fans x2, always-on fans x2
• Temperature sensors: 3 channels of NTC 100K
• Heating interfaces: 3 controllable interfaces supporting up to 10A
• Compatible printer structures: Cartesian, Delta, Kossel, Ultimaker, CoreXY

Notes

Output Port	Maximum Current at 24V	Maximum Current at 12V
Heater Ports	10A	3A
Fan Ports	1A	0.5A