{"product_id":"mellow-fly-sb2040-v3-toolhead-board-voron-klipper-canbus","title":"Mellow FLY-SB2040 V3 Toolhead Board – Voron Klipper CAN Bus","description":"\n\u003ch2\u003eMellow FLY-SB2040 V3 CAN Bus Toolhead Board for Voron 2.4 R2 \/ Trident \/ Stealthburner CW2\u003c\/h2\u003e\n\u003cp\u003eUpgrade your Voron 3D printer's toolhead with the \u003cstrong\u003eMellow FLY-SB2040 V3\u003c\/strong\u003e — a purpose-built toolhead controller board designed for the Voron 2.4 R2, Trident, and Stealthburner CW2 extruder systems. Featuring CAN bus, RS232, and USB communication, onboard TMC2209\/TMC2240 stepper drivers, and support for both Klipper and RepRapFirmware (RRF), this board streamlines your wiring harness while delivering rock-solid, low-latency data transmission.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Protocol Communication:\u003c\/strong\u003e Supports CAN bus, RS232, and USB for stable, low-latency data transfer over longer distances — significantly reducing disconnections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard TMC2209 \/ TMC2240 Drivers:\u003c\/strong\u003e Integrated stepper drivers for the extruder motor — no separate driver modules needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKlipper \u0026amp; RRF Compatible:\u003c\/strong\u003e Easily toggle between RepRapFirmware and Klipper CAN, or between Klipper CAN and RS232, via dedicated onboard switches.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLIS2DW Accelerometer:\u003c\/strong\u003e Built-in accelerometer with INT1\/INT2 pins connected to the MCU for user-level input shaping calibration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePT100 \u0026amp; PT1000 Sensor Support:\u003c\/strong\u003e Switchable 4.7K \/ 1K pull-up resistors accommodate both standard NTC thermistors and high-accuracy PT1000 sensors. MAX31865 version adds dedicated PT100\/PT1000 interface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Current Connectors:\u003c\/strong\u003e Upgraded connectors rated at 15A continuous (30A peak) replace older MX3.0 terminals for improved reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8-Bit DIP Switch Configuration:\u003c\/strong\u003e Tool-free setup — no jumpers or soldering required for common configuration changes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC \u0026amp; PWM Fan Support:\u003c\/strong\u003e Fan board switch toggles between DC and PWM fan modes for maximum flexibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCAN Expansion Port:\u003c\/strong\u003e Additional CAN interface allows connection of further CAN-enabled expansion modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3m CAN Connection Cable Included:\u003c\/strong\u003e Pre-assembled cable prevents signal loss from improper terminal crimping.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Version:\u003c\/strong\u003e Adds 1612 chip for high-speed RRF scanning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5A Heater Port:\u003c\/strong\u003e Dedicated, rated heating rod output for safe hotend control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePeripheral Interfaces\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB × 1\u003c\/li\u003e\n  \u003cli\u003eCAN \/ RS232 × 1\u003c\/li\u003e\n  \u003cli\u003eFan outputs × 3\u003c\/li\u003e\n  \u003cli\u003eRGB × 1\u003c\/li\u003e\n  \u003cli\u003eProbe × 1\u003c\/li\u003e\n  \u003cli\u003eEnd Stop × 2\u003c\/li\u003e\n  \u003cli\u003eTemperature Sensor × 1\u003c\/li\u003e\n  \u003cli\u003eHeater × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSET 1:\u003c\/strong\u003e SB2040 V3 Board + 3m CAN Connection Cable\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSET 2:\u003c\/strong\u003e SB2040 Plus V3 Board (with MAX31865 for PT100\/PT1000) + 3m CAN Connection Cable\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVoron 2.4 R2 \/ Trident\u003c\/li\u003e\n  \u003cli\u003eStealthburner CW2 Extruder\u003c\/li\u003e\n  \u003cli\u003eGemini V1 \/ V1.1 \/ V2\u003c\/li\u003e\n  \u003cli\u003eFLY-C8\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi \u0026amp; other Linux-capable hosts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20SB2040V3\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCAN bus \/ RS232 \/ USB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOnboard Drivers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTMC2209 \/ TMC2240\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15A (30A peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Port Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFirmware Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKlipper, RepRapFirmware (RRF)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e⚠️ \u003cstrong\u003eNote:\u003c\/strong\u003e Do not enable HDMI output on the host when using this board — it may cause firmware errors. On Gemini V1\/V1.1 mainboards, avoid running KlipperScreen simultaneously with CAN bus due to memory constraints. Gemini V2 supports both at the same time.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/t2-pure-bare-copper-wire-round-solid-uncoated-0-1-2mm-10m\"\u003eT2 Pure Bare Copper Wire 0.1–2mm Round Solid Uncoated 10M\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What firmware does the Mellow FLY-SB2040 V3 board support?\u003c\/h4\u003e\n\u003cp\u003eA: The FLY-SB2040 V3 supports both \u003cstrong\u003eKlipper\u003c\/strong\u003e and \u003cstrong\u003eRepRapFirmware (RRF)\u003c\/strong\u003e. Onboard switches let you toggle between RRF and Klipper CAN mode, or between Klipper CAN and RS232 mode, without any hardware modification.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between SET 1 and SET 2?\u003c\/h4\u003e\n\u003cp\u003eA: SET 1 includes the standard SB2040 V3 board, which supports NTC thermistors and PT1000 sensors via switchable pull-up resistors. SET 2 includes the SB2040 Plus V3 board, which adds a dedicated MAX31865 chip for more precise PT100 and PT1000 temperature sensor readings — ideal for high-temperature hotend setups.\u003c\/p\u003e\n\u003ch4\u003eQ: Which host computers is the FLY-SB2040 V3 compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The board is compatible with any Linux-capable host, including \u003cstrong\u003eRaspberry Pi\u003c\/strong\u003e, FLY Gemini V1\/V1.1\/V2, and FLY-C8. It connects via USB-to-CAN (UTOC) or USB-to-RS232 (UTOR) adapter boards, making it easy to integrate with your existing printer setup.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the SB2040 V3 require soldering for configuration?\u003c\/h4\u003e\n\u003cp\u003eA: No. The board features an \u003cstrong\u003e8-bit DIP switch\u003c\/strong\u003e for tool-free configuration, eliminating the need for jumpers or soldering for most setup tasks. This makes initial setup and firmware switching fast and straightforward.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What firmware does the Mellow FLY-SB2040 V3 board support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The FLY-SB2040 V3 supports both Klipper and RepRapFirmware (RRF). Onboard switches let you toggle between RRF and Klipper CAN mode, or between Klipper CAN and RS232 mode, without any hardware modification.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between SET 1 and SET 2?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"SET 1 includes the standard SB2040 V3 board, which supports NTC thermistors and PT1000 sensors via switchable pull-up resistors. SET 2 includes the SB2040 Plus V3 board, which adds a dedicated MAX31865 chip for more precise PT100 and PT1000 temperature sensor readings — ideal for high-temperature hotend setups.\"}}, {\"@type\": \"Question\", \"name\": \"Which host computers is the FLY-SB2040 V3 compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board is compatible with any Linux-capable host, including Raspberry Pi, FLY Gemini V1\/V1.1\/V2, and FLY-C8. It connects via USB-to-CAN (UTOC) or USB-to-RS232 (UTOR) adapter boards, making it easy to integrate with your existing printer setup.\"}}, {\"@type\": \"Question\", \"name\": \"Does the SB2040 V3 require soldering for configuration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The board features an 8-bit DIP switch for tool-free configuration, eliminating the need for jumpers or soldering for most setup tasks. 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