Mellow Fly Micro4 3D Printer Board - 4 Axis 32Bit Raspberry Pi RP2040 for Klipper

The Klipper MICRO4 RP2040 4-Axis 3D Printer Motherboard is a compact, high-performance control board designed specifically for modern 3D printing applications. Built around the powerful Raspberry Pi RP2040 dual-core processor and engineered by Mellow as the Fly Micro 4 V1.0 Board HV, this board offers seamless integration with Klipper firmware and supports advanced stepper drivers for precise motion control. Perfect for hobbyists upgrading their printer, educators teaching additive manufacturing, and professionals building custom 3D printing solutions, this board brings professional-grade features to compact desktop systems.

Key Features:

• 4-Axis Control: Supports four independent stepper motor channels for X, Y, Z, and E (extruder) axes, ideal for standard 3D printer configurations.
• Compact Design: Ultra-small form factor with mounting holes at corners, designed to fit in space-constrained printer enclosures.
• Klipper Firmware Compatible: Optimised for Klipper firmware, enabling advanced features like input shaping, pressure advance, and remote control via Raspberry Pi.
• High-Voltage Support: HV (High Voltage) version capable of handling higher power requirements for improved stepper motor performance.
• TMC2209 UART Support: Dedicated UART communication interface for TMC2209 stepper drivers, enabling silent operation, StallGuard, and advanced motor configuration.
• Multiple Connectors: Eight 4-pin black JST-style connectors for stepper motors and peripherals, plus screw terminal blocks for power input.
• CANbus Support: Integrated CANbus communication for advanced multi-board setups and toolhead communication.
• Onboard Components: Multiple electrolytic capacitors for power stability and voltage regulation.
• Processor: Raspberry Pi RP2040 dual-core ARM Cortex-M0+ running at up to 133 MHz.
• 32-Bit Architecture: Modern 32-bit processing for faster computation and improved print quality compared to 8-bit boards.
• Memory: 264 KB on-chip SRAM for program execution and data handling.
• Heat Dissipation: Black anodised aluminium heatsink mounted for thermal management of power components.
• Manufacturer: Mellow (Fly series), model designation Fly Micro 4 V1.0 Board HV.
• Expansion Headers: Multiple pin headers visible for additional sensors, fans, heaters, and thermistors.

Applications

• 3D Printer Upgrades: Replace older 8-bit boards with modern 32-bit performance and silent stepper drivers.
• Custom Printer Builds: Ideal for DIY 3D printer projects requiring compact control electronics.
• Educational Projects: Perfect for teaching mechatronics, motion control, and additive manufacturing principles.
• Professional Prototyping: Suitable for rapid prototyping applications requiring precise multi-axis control.
• CNC Applications: Can be adapted for small CNC machines and other motion control projects.

Why Choose the Klipper MICRO4 RP2040 4-Axis 3D Printer Motherboard? This board delivers professional-level features in an exceptionally compact package, combining the power of the RP2040 processor with advanced stepper driver support and Klipper firmware compatibility. With its robust power handling, CANbus support, and silent operation capabilities, this motherboard provides everything you need to build or upgrade a high-quality 3D printer. Backed by the active Klipper community and comprehensive documentation, you'll have all the support needed to achieve outstanding print results.

Mellow work team

Thank you for coming to our shop. We are committed to developing 3D printer accessories that can be used on all 3D printers. We have 3 main product lines: NF Extruders, NF Hotends and FLY Motherboards and Electronics. We hope our products will bring you a better overall user experience. If you have any ideas (products, use, sales), please contact us. We look forward to hearing from you.

Description

The Fly Micro4 is a compact 3D printer motherboard equipped with four 2209 drivers supporting sensorless homing. It includes heating and temperature measurement for both the print head and heated bed. It can use BLTouch and metal proximity switches for automatic bed leveling. With a CAN interface, it can connect to CAN tool boards. The four endstop connections fulfill the basic requirements for a 3D printer, making it suitable for DIY projects or converting existing machines.

 

 

MCU: Raspberry Pi RP2040, Dual Core ARM Cortex-M0+ @ 133MHz

Firmware: Klipper

Supports 12-24V DC power input, providing more stable power and eliminating the need for a step-down module.

Driver operating modes: UART, STEP/DIR

Expansion interfaces: BLTouch (Servos, Probe), Proximity Switch X1

Fans: Two controllable 2-wire fans, One always-on fan

Temperature sensors: 2 NTC 100K channels

Heating interfaces: 2 controllable interfaces supporting 10A

 

 

Klipper firmware refer to this URL

mellow.klipper.cn

Web generation machine configuration, do not need to know programming

https://teamgloomy.github.io/Configurator

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