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Gemini V2 All-in-One 3D Printer Control Board

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Product Overview​

The Gemini V2 is a 3D printer control board that integrates both a host and a secondary MCU. It features an onboard Allwinner H5 host and an STM32F405 secondary MCU, allowing it to run the Klipper environment directly and eliminating the need for an external host and data cable connections.

Product Features​

  • Integrated Design: Onboard Linux host and STM32 microcontroller, capable of running Klipper directly.
  • RAM: Gemini V2 upgraded to 1GB DDR3, allowing simultaneous use of CAN and KlipperScreen.
  • Expandable Storage: Supports Micro SD card, and can expand WiFi or eMMC modules via the FLY dedicated M.2 interface.
  • Peripheral Interfaces: Supports common interfaces such as USB, Micro HDMI, Ethernet, SPI, UART, etc.
  • Driver Interfaces: Provides 4 high-voltage driver slots, supporting TMC driver UART/SPI modes.
  • Display Support: Supports TFT, HDMI, and USB displays.

Key Differences from Gemini V3​

ItemGemini V2Gemini V3
Secondary MCUSTM32F405STM32F405
CAN UsageRequires a CANHAT, which has been discontinuedOnboard CAN transceiver chip
DIP Switches8-position DIP switch to select USB/CAN/External Type-C connection4-position DIP switch to select onboard host or External Type-C connection

Key Specifications​

ItemSpecification
Host CPUAllwinner H5, Quad-core 64-bit Cortex-A53
GPUMali 450
RAM1GB DDR3
StorageMicro SD, up to 128GB
Secondary MCUSTM32F405
Driver Sockets4 high-voltage driver sockets
Power SupplyDC 12-24V
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