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FLY-Pi V3 Host Board

The FLY-Pi V3 is a standard-size host board with a form factor compatible with the Raspberry Pi, designed to provide a stable and powerful computing core for professional-grade 3D printing. It not only serves as a perfect replacement for the Raspberry Pi but also, with its Deeply optimized Klipper system, industrial-grade interfaces, and flexible storage expansion options, helps you unlock a faster, more precise, and more reliable printing experience.

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Key Highlights​

  • Deep Optimization, Performance Leap : Powered by the Allwinner H618 quad-core processor, the system comes pre-installed with Deep-customized FlyOS & Klipper firmware, offering significant improvements in processing efficiency and printing performance compared to the native version.
  • Flexible storage, configured on demand : Features a dedicated onboard M2WE interface, supporting FLY Custom M2WE Module (Wi-Fi/EMMC), providing you with a high-speed system boot option.
  • Out-of-the-box, complete ecosystem : The system comes pre-configured with all essential plugins, eliminating complex debugging and greatly reducing the time from installation to first print.
  • Industrial-grade design, stable and reliable : Provides 12-24V wide-voltage power input, shutdown protection upon power loss, and Dedicated SPI accelerometer interface, ensuring long-term stable operation.
  • Rich interfaces, worry-free expansion : Multiple display outputs, multiple UARTs, and an SPI/RRF multiplexed interface meet various peripheral connection requirements.
  • One-click update, supports OTA : Supports one-click system updates, allowing you to easily obtain the latest features and security patches without re-flashing the system.

Purchase and Usage Notice​

Important: Regarding Storage

The FLY-Pi V3No storage devices are included at the factory(i.e., it does not include a M2WE module or Micro SD card). You must configure at least one of the following storage media for the device to function properly:

  • Option 1 (Recommended): Purchase the FLY customized M2WE module for faster system response times and higher reliability.
  • Option Two: Prepare your own Micro SD (TF) card with a capacity between 16GB-128GB.

Product Detailed Specifications​

1. Core System (SoC)​

  • CPU: Allwinner H618, Quad-core 64-bit Cortex-A53
  • GPU: Arm Mali-G31 MP2
  • RAM: 1GB DDR4

2. Storage and Expansion​

  • External Storage: Supports up to 128GB Micro SD card (TF card)
  • Onboard M2WE Expansion Interface: Used to connect the official FLY M2WE module (Wi-Fi / eMMC).

3. Rich Interfaces​

  • Display Output:
    • Micro HDMI x 1
    • FPC-HDMI x 1 (Compatible cable specification: FPC Flexible Cable-25P-Reverse-0.5mm-1m; standard Micro HDMI interface does not require this cable)
    • FPC-TFT x 1 (Compatible cable specification: FPC Flexible Cable-16P-Reverse-0.5mm-400mm; FLY-Pi V3 must use a 16P cable)
    • (Supports single-cable connection for both TFT screens and HDMI screens, enabling more flexible deployment)
  • USB and Network:
    • USB 2.0 Port x 4
    • 100M Ethernet Port (Eth) x 1
  • Industrial and Expansion Interfaces:
    • UART x 1 (XH2.54-4P, can be used for connecting external serial screens)
    • SPI/RRF Multiplexed Interface (ZH1.5-7P) x 1 (Can connect ADXL345 and other sensors or RRF expansion)
    • RS232 x 2 (XH2.54-4P, can connect RS232 tool boards; common ground must be used during operation)

4. Power and Consumption Management​

  • Input Voltage: DC 12V-24V (via XH2.54-2P power terminal) or 5V/2A and above (via Type-C interface), choose one of the two methods
  • 5V Fan Interface: ZH1.5-2P, provides normally-on 5V power output (Note: This interface does not support PWM speed control)
  • Power Loss Protection Features:
    • Supports Power Loss Print Recovery and Safe Power-Off Shutdown features.
    Configuration Instructions

    These features require configuration within the system to enable; factory default is disabled.

5. System and Software​

  • Operating System: FlyOS-FAST (Lightweight system optimized specifically for 3D printing)
  • Core Firmware: Deeply Optimized Klipper Firmware & Native RRF Support
    • Optimization Notes: We have performed deep low-level optimization and adaptation based on native Klipper, achieving significant improvements in command processing efficiency, motion planning, and computation performance compared to the original version, bringing you more extreme printing speed and precision.
  • Pre-installed Software (Ready to Use Out of the Box):
    • Core Components: Klipper, Moonraker
    • Web Interface: Mainsail, Fluidd (Optional, default is Fluidd)
    • Screen and Touch Support: Supports FLY-TFT, HDMI, USB screens, KlipperScreen, FLY Screen, and serial screens; KlipperScreen and FLY Screen are not enabled by default; when enabling, choose one and configure according to the screen type.
    • Camera Support: Supports driver-free USB cameras, can use Crowsnest (not enabled by default); FLYOS-FAST v1.4.0 also offers GoCam as an option; Crowsnest and GoCam cannot be enabled simultaneously.
    • Advanced Feature Plugins: Essential plugins such as Input Shaping and Resonance Compensation are pre-installed (numpy is pre-installed, no additional configuration required)

Important Notices​

Interface Conflict Warning

The TFT screen and SPI accelerometer interfaces cannot be used simultaneously!

  • Physical conflict:TFT screen (via the FPC-TFT interface) and the SPI/RRF multiplexed interface (ZH1.5-7P) share the same set of SPI resources on the hardware.
  • Consequences:Connecting both simultaneously will result in Abnormal screen display and Accelerometer measurement data severely inaccurate.
  • Solution:When in use, please ensure only one of them is connected.
M2WE Interface Warning

Private protocol, strictly prohibited from connecting to non-FLY devices!

  • The onboard M2WE expansion interface is FLY Private Protocol, with customized physical and electrical specifications.
  • Only supports connection to the official FLY M2WE module(used for expanding Wi-Fi or eMMC storage functionality).
  • Absolutely no connection of any standard or non-official M.2 devices is permitted, otherwise it will Inevitably causes permanent hardware damage to the motherboard.
Regarding Wi-Fi Functionality

The FLY-Pi V3 does not have onboard Wi-Fi functionality.

To use Wi-Fi, you have two options:

  1. Recommended Solution: Purchase and use the official FLY M2WE Wi-Fi Module.
  2. Alternative options: Use Universal USB Wi-Fi Module, but please ensure its Supports Linux systems and is driver-free for compatibility.
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