Introduction

Product Introduction

The FLY SHT36 V2 is a nozzle tool board designed by Guangzhou Meilun Electronics Technology Co., Ltd. for the extruder head of 3D printers. Using this tool board, four wires can replace the complex wiring between the original motherboard and the print head, 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.

• Volume compressed to the extreme, designed with a 6-layer board
• Supports CAN bus connection, ensuring more stable data transmission, lower latency, and more reliable connections
• Onboard TMC2209 driver, using UART mode, suitable for extruders
• Onboard ADXL345 acceleration sensor
• 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
• Communication: CAN
• Supports BLTOUCH, PL08N, and other leveling sensors, 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, peak 30A
• Added optional 5/12/24V fan voltage
• Added onboard NTC100k resistor for chamber temperature measurement
• Added power reverse polarity protection
• Added ADXL345 INT1 connected to MCU for individual users for leveling
• Increased heater port size, rated current 10A
• Added high-voltage input limit
• Replaced main controller with domestic MCU
• Supports magnetic encoder (as5047d), used by Klipper for motion analysis (currently not supported by Klipper)
• Added 1-meter CAN cable to prevent signal loss due to improper terminal crimping by users
• Installation dimensions: hole spacing 43.84mm, M3 mounting hole diameter
• Processor: GD32F103 (purchased before October 28, 2022), APM32F072 (purchased after October 28, 2022)

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