Introduction
1. Product Introduction
FLY SB2040 PRO V3 is a tool board launched by Guangzhou Meilun Electronic Technology Co., Ltd. for the VORON Stealthburner printhead. With this tool board, four wires can be used to replace the complicated wiring between the original mainboard and the printhead, optimizing the layout. SB2040 is suitable for stealthburner and afterburner. It integrates a CAN transceiver, RS232 transceiver, USB port, TMC2240 driver, LIS2DW accelerometer, three controllable fans, and other functions on the tool board. This tool board is suitable for Klipper firmware, and Max V3 and Pro Max V3 support RRF firmware.
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1.1 Product Features
- Reserved Boot button, users can enter Boot mode via Type-C to update firmware
- Supports Klipper firmware, Max V3 and Pro Max V3 support RRF firmware
- Supports CAN mode and RS232 mode, Max V3 and Pro Max V3 support RRF CAN mode
- In RS232 mode, it has higher transmission rate and stronger stability. In CAN mode, it supports CAN expansion with reserved CAN expansion interface
- Temperature sensor support: Plus V3, Max V3, Pro Plus V3, Pro Max V3 have onboard MAX31865 chips, compatible with PT100 and PT1000 temperature sensors.
- Onboard LIS2DW accelerometer, Max V3 and Pro Max V3 have onboard LDC1612 sensor
- Reserved RGB interface, onboard 2240 driver, supports various leveling sensors, such as klicky, Voron Tap, PL08n, etc.
- Supports 12-24V voltage, 15A current input, enlarged heating rod port, rated current 10A
1.2 New Features
- Supports mutual switching between Klipper CAN mode and RS232 mode; Max V3 and Pro Max V3 support RRF CAN mode
- Added RS232 mode, featuring higher transmission rates, stronger stability, and simpler debugging and use
- Max V3 and Pro Max V3 now feature RRF CAN mode, which can be switched to RRF tool boards for enhanced applicability
- Added CAN expansion interface for easy expansion of CAN devices
- Added terminal resistor DIP switch; its 120R terminal resistor can be selected via DIP switch without the need for jumpers
- Added 1-meter power/signal connection cable; the cable uses a twisted-pair design for stronger anti-interference performance
1.3 Product Parameters
- MCU: Raspberry Pi rp2040, Dual core ARM Cortex-M0+@133MHz
- The 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, some models optionally support LDC1612 and MAX31865
- Heating rod interface: Heating rod (HEAT0)
- Expansion interfaces: RGB, EndStop, PT100/PT1000, XH2.54-2P CAN port
- Fan interfaces: Three fan channels, supporting DC fans or PWM fans
- Motor driver: Onboard TMC2240
- Temperature sensors: One channel 100K NTC or PT1000 (TH0), one channel PT100/PT1000 optional
2. Product Categories
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 Notes
| Output Port | Max Current at 24V Power | Max Current at 12V Power |
|---|---|---|
| Heater Port | 5A | 2.5A |
| Fan Port | 1A | 0.5A |
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