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FLY-SB2040 Tool Head boards

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Overview

The FLY-SB2040 series of toolhead boards are CAN bus enabled control boards designed for 3D printer toolheads. They offer various features and capabilities across different versions, making them suitable for different printer configurations and requirements.

Available Models

FLY-SB2040-V2

The SB2040-V2 is the latest iteration of the SB2040 series, offering improved features and capabilities.

Key Features: - CAN bus communication for stable data transmission over long distances - 24V maximum input voltage - 5A MOSFET for heater control - Onboard TMC2209 driver for the extruder - Onboard ADXL345 accelerometer for input shaper resonance measurement - 3 controllable fans - RGB LED control - Optional MAX31865 chip for PT100 temperature sensor support - 5V anti-backflow protection - Peripheral interfaces: - USB_1 - CAN_1 - FAN_3 - RGB_1 - Servo_1 - Probe_1 - EndStop_3 - Thermal_1 - Heater_1

FLY-SB2040-V1

The original SB2040 board shares many features with the V2 but may have some limitations in terms of component placement and feature availability.

Choosing the Right Board

When to Choose SB2040-V2

  • For most standard toolhead applications
  • When you need 3 fan control channels
  • For compact toolhead designs
  • When 5A heater current is sufficient
  • For setups requiring 5V anti-backflow protection
  • When you need a balance of features and size

When to Choose SB2040-V1

  • For basic toolhead applications
  • When you don't need the latest features
  • For budget-conscious builds
  • When you have existing V1 components

Installation and Setup

Physical Installation

  1. Mount the board securely in your toolhead
  2. Install the heatsink on the TMC2209 driver
  3. Connect the CAN bus cable (recommended length < 1 meter for USB)
  4. Connect all necessary peripherals (fans, heater, etc.)

CAN Bus Configuration

  1. Ensure proper CAN bus termination
  2. Configure the board in your Klipper configuration
  3. Set up the appropriate CAN bus ID

Firmware Installation

  1. Install CanBoot bootloader
  2. Flash Klipper firmware
  3. Configure the board in your printer.cfg

Troubleshooting

Common Issues

  1. CAN bus communication problems
  2. Check termination resistors
  3. Verify CAN bus ID configuration

  4. Ensure proper cable connections

  5. Fan control issues

  6. Verify correct fan port connections
  7. Check voltage settings

  8. Ensure proper MOSFET installation

  9. Temperature sensor problems

  10. Verify thermistor connections
  11. Check for proper voltage reference

  12. Ensure correct configuration in Klipper

  13. USB connection issues

  14. Verify cable length is under 1 meter
  15. Check USB port functionality
  16. Ensure proper driver installation

Comparison with Other Boards

vs FLY-SHT36 V2

  • SHT36 V2 has a 10A MOSFET vs SB2040's 5A
  • SHT36 V2 has 2 fans vs SB2040's 3 fans
  • SHT36 V2 has adjustable fan voltage (5V/12V/24V)
  • SHT36 V2 has AS5047D magnetic encoder
  • SB2040 has 5V anti-backflow protection

vs FLY-SHT42

  • SHT42 is larger with more power handling
  • SHT42 has more extensive peripheral options
  • SB2040 is more compact
  • SB2040 has 3 fan channels vs SHT42's 2

Additional Resources

Support

For additional support: - Join the Mellow Discord server - Check the Mellow GitHub repository - Consult the Klipper documentation

Purchase Information

The FLY-SB2040 boards are available for purchase through: - Mellow's AliExpress store - Authorized Mellow resellers