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Introduction

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This document is being migrated. Please visit the old documentation before it is completed.

1. Product Introduction

FLY SB2040 V3 is a tool board developed by Guangzhou Mellow Electronics Technology Co., Ltd. for the VORON Stealthburner print head. This tool board can replace the complex wiring between the motherboard and the print head with just four wires, optimizing the layout. SB2040 is suitable for stealthburner and afterburner, integrating features such as a CAN transceiver, RS232 transceiver, USB port, TMC2209 driver, LIS2DW accelerometer, and three controllable fans. This tool board is compatible with Klipper and RRF firmware.

1.1 Product Features​

  • Pre-installed Boot button, users can enter Boot mode via Type-C to update firmware
  • Supports Klipper firmware and RRF firmware
  • Supports CAN mode, RS232 mode, and RRF CAN mode
  • In RS232 mode, it offers higher transmission rates and stronger stability. In CAN mode, it supports CAN expansion with reserved CAN expansion interfaces
  • Temperature sensor support: Onboard MAX31865 chip, compatible with PT100 and PT1000 temperature sensors
  • Onboard LIS2DW accelerometer and LDC1612 sensor
  • Reserved RGB interface, onboard TMC2209 driver, supports multiple leveling sensors such as klicky, Voron Tap, PL08n, etc.
  • Supports 12-24V voltage and 15A current input, larger heating element port with a rated current of 10A

1.2 New Features​

  • Supports switching between Klipper CAN mode, RS232 mode, and RRF CAN mode
  • Added RS232 mode with higher transmission rates and stronger stability, making debugging simpler
  • Added RRF CAN mode, allowing it to be switched to an RRF tool board, enhancing versatility
  • Added CAN expansion interfaces for easy expansion of CAN devices
  • Added terminal resistor DIP switch, with 120 ohm terminal resistors selectable via DIP switch, eliminating the need for jumpers
  • Added 1-meter power/signal cable, using twisted pair design for better interference resistance

1.3 Product 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: DC12V-24V
  • Logic voltage: DC3.3V
  • Onboard sensors: LIS2DW and optional ldc1612 and max31865
  • Heater element interface: Heater (HEAT0)
  • Expansion interfaces: RGB, EndStop, PT100/PT1000, XH2.54-2P CAN port
  • Fan interfaces: One DC fan, two DC fans or one PWM fan
  • Motor driver: Onboard TMC2209
  • Temperature sensor: One 100K NTC or PT1000 (TH0), one PT100/PT1000 selectable

4. Product Categories

RRF tutorial link RRF

SB2040V3Plus V3Max V3Pro V3Pro Plus V3Pro Max V3
Drivealt textalt textalt textalt textalt textalt text
Klipper CANBus✅✅✅✅✅✅
Klipper RS232✅✅✅✅✅✅
RRF CANBus❌❌✅❌❌✅
LIS2DW✅✅✅✅✅✅
MAX31865❌✅✅❌✅✅
LDC1612❌❌✅❌❌✅