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Mellow Fly SHT36 V3 Klipper/RRF Canbus RS232 Board


Mellow Fly SHT36 V3 Klipper/RR...


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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.


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Satisfied Customers Let’s Look Reviews

Raven3DTech went above and beyond, they were onsite to assist with any issues and solved immediately. They sent the item out that afternoon to ensure I get the package without delay. Highly recommended site with genuine customer care. Thanks guys

Stephen Lucas Australia
Really good cusomter service and quality products!

Raven3d is literally your one-stop shop for any 3d printing-related needs. The owner is very knowledgeable about the things that you might need for your setup because he also occasionally builds printers for customers and you can also ask him if you want a finished printer. Shipping is also very fast. I am extremely happy with their service. Don't hesitate to buy from them especially if you're in Australia of course. Which I am not but still I buy my parts from them. 😉

Lance Reyes Romero Philippines

Outstanding customer service and support and the prices are comparable with overseas vendors.
I'll buy from Raven over others due to the past and continued service I receive.

Jim Pizzey Australia

“As described and better than expected regarding packing/shipping and product presentation. Highly recommended.”


“The quality is super. I have been waiting for the Goliath to come out for a long time. the packaging is also at the level.


“Exactly as described. Reached me a full week ahead of the delivery estimate. Super fast shipping!”