Introduction

Product Introduction

FLY SHT36 V2 is a toolhead board designed by Guangzhou Magnesium Electronic Technology Co., Ltd. for 3D printer extruder heads. With this toolhead board, four wires can be used to replace the complicated wiring between the original mainboard and the print head, optimizing the layout. SHT36 V2 is suitable for 36 stepper motors and integrates a CAN transceiver, USB port, TMC2209 driver, ADXL345 accelerometer, two controllable fans, and other functional toolhead board features. This toolhead board is suitable for Klipper firmware.

• Size compressed to the extreme, using a 6-layer board design
• Supports CAN bus connection, making data transmission more stable, with lower latency and a more stable connection
• Onboard TMC2209 driver, using UART mode, can be used for the extruder
• Onboard ADXL345 accelerometer
• Supports PT100 (MAX31865)
• Replaceable fan MOS design
• Supports BLTOUCH, PL08N and other leveling sensors, integrated XY limit switches
• Supports 12-24V voltage input
• MCU: STM32F072/GD32F103/APM32F072
• Communication: CAN

New Features

• Added support for switching between 4.7K resistor (for NTC thermistor) or 1.1K resistor (for PT1000)
• The 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 measuring chamber temperature
• Added a power reverse connection protection
• Added ADXL345 INT1 connected to MCU, for individual users to use for leveling.
• Enlarged heater port, rated current 10A
• Added high-voltage input limit
• Replaced the main controller with a domestic MCU
• Supports magnetic encoder (as5047d), used by Klipper for motion analysis
• Added a 1-meter CAN connection cable, to avoid the issue of signal loss caused by users being unable to crimp terminals correctly
• Installation dimensions: hole spacing 43.84mm, M3 mounting hole diameter
• 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