Mellow Fly SHT36 V3 Klipper/RRF Canbus RS232 Board

The FLY-SHT36 V3, a tool board specifically designed by the FLY team for 3D printer extruder heads, is a powerhouse of advanced features. This tool board can replace the complex wiring between the mainboard and the print head with just four wires, optimising the layout. The FLY-SHT36 V3 is suitable for 36-step motors and integrates a CAN & RSR232 transceiver, USB port, TMC2209 driver, LIS2DW accelerometer, two controllable fans, and other functionalities. With these advanced features, the FLY-SHT36 V3 is a game-changer in the 3D printing industry. This tool board is compatible with Klipper firmware, and the Max version can be used with both RRF & Klipper, supporting Eddy LDC1612.

The SHT36 V3 board utilises CAN/RS232 communication to connect the upper computer to the UTOC/UTOR board, enabling communication with the SHT36 through the UTOC/UTOR

Technical Specifications:

MCU: Raspberry Pi RP2040, dual-core ARM Cortex-M0+ @ 133MHz

Connection Interface: Uses XT30 (2+2) connector, supporting 15A current, peak 30A

Firmware: Reprap / Klipper

Input Voltage: DC 12V-24V

Logic Voltage: DC 3.3V

Onboard Sensors: LIS2DW and LDC1612(Max version adds 1612 chip for RRF fast scanning)

Heater Interface: HEAT0, supporting 10A

Expansion Interfaces: RGB, EndStop, PT100/PT1000, XH2.54-2P CAN expansion port

Fan Interfaces: Two controllable DC fans (Max)

Motor Driver: Onboard TMC2209

Temperature Sensor: One 100K NTC or PT1000 (TH0), Plus version adds 31865 chip, latest support for PT100/PT1000.