Introduction

• V1

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• V2

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Product Introduction

FLY SB2040 is a toolhead board launched by Guangzhou Meilun Electronic Technology Co., Ltd. for the VORON Stealthburner printhead. With this toolhead board, four wires can be used to replace the complex wiring between the original mainboard and the printhead, optimizing the layout. SB2040 is suitable for 36 stepper motors and integrates a CAN transceiver, USB port, TMC2209 driver, ADXL345 accelerometer, two controllable fans, and other functions into the toolhead board. This toolhead board is suitable for Klipper firmware.

• Supports CAN bus connection, providing more stable data transmission, lower latency, and more stable connections
• Onboard TMC2209 driver, using UART mode, can be used for the extruder
• Onboard ADXL345 accelerometer
• Supports BLTOUCH, PL08N, and other leveling sensors, and integrates XY limit switches
• Supports 12-24V voltage input
• MCU: Raspberry Pi rp2040, Dual core ARM Cortex-M0+@133MHz
• Added support for switching between a 4.7K resistor (for NTC thermistor) or a 1K resistor (for PT1000)
• The CAN interface uses XT30(2+2), supporting 15A current and 30A peak
• Added an onboard NTC100k resistor for measuring chamber temperature
• Added ADXL345 INT1 and INT2 connected to the MCU, for individual users to use for leveling.
• Supports high-voltage input limit switches
• Includes a 3-meter CAN connection cable as a gift, avoiding the trouble of signal loss caused by users being unable to crimp terminals correctly
• Supports 2/3/4-wire fans
• Split design, making the Stealthburner easy to disassemble
• Compatible with hartk's Stealthburner Toolhead Board (the small fan board does not need to be replaced)
• Interfaces: Controllable fans*2, RGB*1, limit switches*3, heating tube*1, thermistor*1

Product Parameters

• Supports Klipper CAN mode
• Connection interface uses XT30(2+2) connector, supports 15A current, 30A peak
• MCU: Raspberry Pi rp2040, Dual core ARM Cortex-M0+@133MHz
• Input voltage: DC12-24V
• Maximum output current of heater cartridge: 5A
• Maximum output current of fan interface: 1A

Product Precautions

Output Port	Maximum Current at 24V	Maximum Current at 12V
Heater Port	5A	2.5A
Fan Port	1A	0.5A