Introduction
1. Product Introduction
The FLY SB2040 V3 is a tool board developed by Guangzhou Meilun Electronic Technology Co., Ltd. for the VORON Stealthburner printhead. Using this tool board, four wires can replace the complex wiring between the original motherboard and the printhead, optimizing the layout. The SB2040 is suitable for stealthburner and afterburner. It integrates a CAN transceiver, RS232 transceiver, USB port, TMC2209 driver, LIS2DW accelerometer, three controllable fans, and other functional features. This tool board is compatible with Klipper and RRF firmware.
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1.1 Product Features
- Reserved Boot button, allowing users to 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, offers higher transmission speed and stronger stability. In CAN mode, supports CAN expansion with a reserved CAN expansion interface
- Temperature sensor support: Onboard MAX31865 chip, compatible with PT100 and PT1000 temperature sensors
- Onboard LIS2DW accelerometer and LDC1612 sensor
- Reserved RGB interface, onboard 2209 driver, supports multiple leveling sensors such as klicky, Voron Tap, PL08n, etc.
- Supports 12-24V voltage and 15A current input, with an enlarged heating rod port rated at 10A
1.2 New Features
- Supports switching between Klipper CAN mode, RS232 mode, and RRF CAN mode
- Added RS232 mode, offering higher transmission speed, stronger stability, and simpler debugging and usage
- Added RRF CAN mode, allowing switching to an RRF tool board for enhanced applicability
- Added CAN expansion interface for easy expansion of CAN devices
- Added terminal resistor DIP switch, with 120R terminal resistor selectable via DIP switch, no jumpers needed
- Added 1-meter power/signal connection cable, designed with twisted pair for stronger anti-interference performance
1.3 Product Parameters
- 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 interface: Heater (HEAT0)
- Expansion interfaces: RGB, EndStop, PT100/PT1000, XH2.54-2P CAN port
- Fan interface: One DC fan, two DC fans or PWM fans
- Motor driver: Onboard TMC2209
- Temperature sensor: One 100K NTC or PT1000 (TH0), one optional PT100/PT1000
4. Product Classification
RRF tutorial link RRF
| SB2040 | V3 | Plus V3 | Max V3 | Pro V3 | Pro Plus V3 | Pro Max V3 |
|---|---|---|---|---|---|---|
| Drive |  | | |  | | |
| Klipper CANBus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Klipper RS232 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| RRF CANBus | ❌ | ❌ | ✅ | ❌ | ❌ | ✅ |
| LIS2DW | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| MAX31865 | ❌ | ✅ | ✅ | ❌ | ✅ | ✅ |
| LDC1612 | ❌ | ❌ | ✅ | ❌ | ❌ | ✅ |
Product Precautions
| Output Port | Maximum Current at 24V Power Supply | Maximum Current at 12V Power Supply |
|---|---|---|
| Heater Port | 5A | 2.5A |
| Fan Port | 1A | 0.5A |
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