Introduction

Product Introduction

The FLY SHT36 V2 is a toolhead board for 3D printer extruders designed by Guangzhou Meilun Electronics Technology Co., Ltd. Using this tool board, four wires can replace the complex connections between the motherboard and the printhead, optimizing the layout. The SHT36 V2 is suitable for 36 stepper motors and integrates a CAN transceiver, USB port, TMC2209 driver, ADXL345 acceleration sensor, two controllable fans, and other functions. This tool board is compatible with Klipper firmware.

• Ultra-compact size with a 6-layer board design
• Supports CAN bus connection for more stable data transmission, lower latency, and more reliable connection
• Onboard TMC2209 driver using UART mode for the extruder
• Onboard ADXL345 acceleration sensor
• Supports PT100 (MAX31865)
• Replaceable fan MOS design
• Supports leveling sensors such as BLTOUCH and PL08N, with integrated XY limit switches
• Supports 12-24V voltage input
• MCU: STM32F072
• Communication: CAN
• Supports leveling sensors such as BLTOUCH and PL08N, with integrated XY limit switches

New Features

• Added support for switching between 4.7K resistor (for NTC thermistor) or 1.1K resistor (for PT1000)
• CAN interface no longer uses MX3.0 terminals; the new connector supports 15A current, with a peak of 30A
• Added selectable 5/12/24V fan voltage
• Added onboard NTC100k resistor for chamber temperature measurement
• Added reverse power protection
• Added ADXL345's INT1 connected to the MCU for leveling by some users
• Increased heater port size with a rated current of 10A
• Added high-voltage input limit
• Replaced the main controller with a domestic MCU
• Supports magnetic encoder (AS5047D) for motion analysis in Klipper (currently not supported by Klipper)
• Added 1-meter CAN cable to prevent signal loss due to improper terminal crimping by users
• Mounting dimensions: hole spacing 43.84mm, M3 mounting holes
• Processor: GD32F103 (purchased before 2022-10-28)、APM32F072 (purchased after 2022-10-28)

SHT-36 V2

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Product Notes

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