{"product_id":"u2c-can-interface-board","title":"U2C CAN Interface Board","description":"\u003cp\u003e\u003cstrong\u003eUSB-to-CAN bridge for Klipper CAN-bus toolheads.\u003c\/strong\u003e The BIGTREETECH U2C converts a Raspberry Pi USB connection into CAN bus for 3D-printer control boards and CAN toolhead boards.\u003c\/p\u003e\n\u003ch3\u003eWhy use U2C\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for Klipper CAN setups where the Raspberry Pi talks to the printer over \u003cstrong\u003eCAN bus\u003c\/strong\u003e instead of a bundle of individual toolhead wires.\u003c\/li\u003e\n\u003cli\u003eWorks with BIGTREETECH EBB-series toolhead boards, including the live \u003ca href=\"https:\/\/dfh.fm\/products\/btt-sb2040\"\u003eBTT EBB SB2240 CAN V1.0\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eMultiple CAN interface formats make it easier to wire to different boards and harness styles.\u003c\/li\u003e\n\u003cli\u003eCAN bus supports longer runs, many nodes on one bus, and better noise resistance than loose signal wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e USB-to-CAN adapter module for 3D-printer electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHost connection:\u003c\/strong\u003e USB from Raspberry Pi \/ Klipper host.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAN connection:\u003c\/strong\u003e CAN bus output for motherboards, EBB boards, and other CAN expansion devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV2.0 \/ V2.1 MCU family:\u003c\/strong\u003e STM32G0B1C8, per BIGTREETECH documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Klipper CAN bitrate:\u003c\/strong\u003e 500000 \/ 500K, matching BIGTREETECH's setup guide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV2.1 hardware notes:\u003c\/strong\u003e Type-C ESD protection, ENIG PCB finish, SWD \/ hardware DFU firmware update support, and selectable CAN termination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIntended use\u003c\/h3\u003e\n\u003cp\u003eUse this board when converting a Voron, RatRig, VZBot, or other Klipper-based printer to CAN-bus toolhead wiring. Pair it with a CAN toolhead board and proper harnessing such as the \u003ca href=\"https:\/\/dfh.fm\/products\/btt-3m-can-bus-cable\"\u003eBTT 3m CAN Bus Cable\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eVersion guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eV1 \/ V1.1:\u003c\/strong\u003e earlier U2C revisions for USB-to-CAN use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV2.1:\u003c\/strong\u003e current 3-CAN-output revision documented by BIGTREETECH \/ BIQU.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is the CAN interface board, not a toolhead driver board by itself.\u003c\/li\u003e\n\u003cli\u003eCAN wiring still needs correct power, ground, CAN-H \/ CAN-L orientation, firmware, and termination.\u003c\/li\u003e\n\u003cli\u003eOnly terminate the bus at the correct endpoints; follow your toolhead-board and Klipper wiring guide.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e“Worked perfectly with EBB36 and Eric Zimmerman’s guide.”\u003c\/blockquote\u003e","brand":"BigTreeTech","offers":[{"title":"1","offer_id":44747814437086,"sku":"4354277179","price":30.0,"currency_code":"USD","in_stock":false},{"title":"1.1","offer_id":42967054942430,"sku":"4354277180","price":40.0,"currency_code":"USD","in_stock":false},{"title":"2.1","offer_id":43296871448798,"sku":"8285265098","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/image_96dff066-37d5-4823-8745-a6e2305a00da.jpg?v=1653187471","url":"https:\/\/formosissima.myshopify.com\/products\/u2c-can-interface-board","provider":"dfh.fm","version":"1.0","type":"link"}