{"product_id":"box-turtle-afc-io-board-input-output-box-turtle-bt-io","title":"Box Turtle AFC-IO Board \/ Input-Output Box Turtle (BT-IO)","description":"\u003ch2\u003eBox Turtle AFC-IO Board (BTIO) — Centralized I\/O Hub for BoxTurtle AMS Filament Changer, CAN + USB, Daisy-Chain Expansion, No-Solder Toolhead Buffer Adapter\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003eBox Turtle AFC-IO Board (BTIO)\u003c\/strong\u003e is the wiring backbone\n  that transforms a BoxTurtle build from a tangle of individual cables into a\n  clean, serviceable, and expandable system. It serves as a\n  \u003cstrong\u003ecentralized I\/O hub\u003c\/strong\u003e between your Klipper printer, the\n  BoxTurtle AFC-Lite controller, and your toolhead buffer — consolidating all\n  critical connections into one board that mounts flush into the BoxTurtle's\n  right rear skirt position. Whether you're running a single BoxTurtle unit\n  over USB or daisy-chaining multiple units on a CAN bus with external 24V\n  power, the BTIO handles the transition cleanly, without adapters, splices,\n  or soldering.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  ⚠️ \u003cstrong\u003eBoxTurtle kit required.\u003c\/strong\u003e The BTIO is an add-on I\/O\n  board — it does not include the BoxTurtle kit, AFC-Lite board, or any\n  filament changing hardware. It is a dedicated accessory for BoxTurtle\n  builds already in progress or completed.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003ePrinted mounting parts required.\u003c\/strong\u003e The BTIO installs\n  in place of the \u003ccode\u003eright_rear_skirt\u003c\/code\u003e panel. You must print\n  the \u003ccode\u003e[a]_option_plate\u003c\/code\u003e and install two M3 heatset inserts\n  before mounting. Download STLs from the\n  \u003ca href=\"https:\/\/github.com\/ArmoredTurtle\/AFC-Accessories\/tree\/main\/BTIO\" target=\"_blank\" rel=\"noopener\"\u003eArmoredTurtle AFC-Accessories GitHub\u003c\/a\u003e\n  before ordering.\u003cbr\u003e\n  ⚠️ \u003cstrong\u003e24V power required for CAN operation.\u003c\/strong\u003e\n  The AFC-Lite PCB does not support USB Power Delivery. When connecting\n  via USB-C for data, you must still supply 24V and GND to the CAN bus\n  port pins for power. The BTIO enables external power delivery for USB\n  operation — plan your power routing accordingly.\n\u003c\/p\u003e\n\n\u003ch3\u003eOne Board, Every Connection — Clean Wiring from Day One\u003c\/h3\u003e\n\u003cp\u003e\n  The BTIO addresses the most common pain point in BoxTurtle builds:\n  wiring management. Without it, connecting the printer, toolhead buffer,\n  and expansion units means routing separate cables to separate ports\n  across the BoxTurtle frame. The BTIO consolidates all of this into a\n  single board at the rear skirt — one connection to the printer, one\n  to the toolhead buffer via the dedicated TN port, and a daisy-chain\n  port for multi-unit expansion. Swapping between USB and CAN control,\n  or between CAN bus power and an external 24V PSU, happens at the board\n  without opening the enclosure or touching internal wiring.\n\u003c\/p\u003e\n\n\u003ch3\u003eUSB + CAN in One Board — Switch Without Rewiring\u003c\/h3\u003e\n\u003cp\u003e\n  The BTIO supports both \u003cstrong\u003eUSB-C and CAN bus\u003c\/strong\u003e communication\n  with the host printer. This matters in practice because BoxTurtle builds\n  often start on USB for initial commissioning and calibration, then move to\n  CAN for permanent installation. With the BTIO, that transition is a\n  cable swap at the board — not a rewire. Similarly, power can come from\n  the CAN bus (from the printer's 24V supply) or from a dedicated external\n  PSU depending on your setup, and the BTIO handles both without\n  modification.\n\u003c\/p\u003e\n\n\u003ch3\u003eCommon Ground Design — Electrical Stability Across All Ports\u003c\/h3\u003e\n\u003cp\u003e\n  With the exception of USB lines, \u003cstrong\u003eall ground connections on the\n  BTIO share a common ground\u003c\/strong\u003e. This simplifies wiring because you\n  don't need to manage separate ground references for different ports —\n  signal integrity is maintained across the printer connection, toolhead\n  buffer, and expansion chain simultaneously. USB ground is intentionally\n  isolated to prevent ground loop issues that are common when mixing USB\n  and powered CAN connections on the same board.\n\u003c\/p\u003e\n\n\u003ch3\u003eTN Port — No-Solder Toolhead Buffer Repin\u003c\/h3\u003e\n\u003cp\u003e\n  The dedicated \u003cstrong\u003eTN (TurtleNeck) port\u003c\/strong\u003e is engineered\n  specifically for toolhead buffer integration — and includes a practical\n  detail that saves time during installation. Although only one ground pin\n  is electrically required for the toolhead buffer signal, the TN port\n  provides \u003cstrong\u003etwo ground pins\u003c\/strong\u003e that mirror the original\n  toolhead buffer connector layout. This means you can repin your existing\n  toolhead buffer cable directly into a single BTIO-compatible connector\n  \u003cstrong\u003ewithout soldering\u003c\/strong\u003e — just move the pins over and plug in.\n  No heat, no flux, no continuity risk from cold joints.\n\u003c\/p\u003e\n\n\u003ch3\u003eDaisy-Chain Expansion — Scale to 16 BoxTurtle Units\u003c\/h3\u003e\n\u003cp\u003e\n  The BTIO supports daisy-chained configurations for\n  \u003cstrong\u003emulti-unit BoxTurtle expansion\u003c\/strong\u003e. The BoxTurtle system\n  supports up to 16 connected units (up to 64 filament spools) — and the\n  BTIO's daisy-chain port is what makes clean multi-unit wiring possible\n  without running independent cable runs back to the printer for each unit.\n  Plan your expansion from unit one and avoid reworking wiring later.\n\u003c\/p\u003e\n\n\u003ch3\u003eSkirt-Mounted — Integrated Into the BoxTurtle Frame\u003c\/h3\u003e\n\u003cp\u003e\n  The BTIO replaces the \u003ccode\u003eright_rear_skirt\u003c\/code\u003e panel on the\n  BoxTurtle frame, mounting flush to the rear using two M3×6 SHCS into\n  the printed option plate and two additional M3×6 SHCS threaded directly\n  into the plastic. All external connectors face outward from the skirt,\n  keeping the BoxTurtle's interior clean and all service points accessible\n  from outside the unit.\n\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible system\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBoxTurtle AMS filament changer (ArmoredTurtle \/ LDO BoxTurtle)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB-C and CAN bus (switchable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCAN bus 24V or external 24V PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExternal power via USB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — enables power delivery when operating over USB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGround architecture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommon ground across all ports except USB lines\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eToolhead buffer port (TN)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 ground pins — mirrors original connector layout for no-solder repin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDaisy-chain support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — multi-unit BoxTurtle expansion\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMount position\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReplaces right_rear_skirt panel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting hardware\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4× M3×6 SHCS (2 into option plate, 2 into plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeatset inserts required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2× M3 into printed option_plate\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e1× Box Turtle AFC-IO Board (BTIO)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's NOT Included\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eBoxTurtle kit — sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eAFC-Lite board — sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eToolhead buffer (TurtleNeck or Belay) — sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003ePrinted option_plate and right_rear_skirt replacement — download STL from ArmoredTurtle GitHub\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eM3 heatset inserts and M3×6 SHCS mounting hardware — source locally\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e❌\u003c\/td\u003e\n\u003ctd\u003eCables and connectors — not included\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003e\n  The BTIO is the right add-on for any BoxTurtle builder who wants clean,\n  maintainable wiring from the start — or who is retrofitting a completed\n  BoxTurtle that currently has cables routed ad-hoc to the printer. It's\n  particularly valuable if you're planning to expand to multiple BoxTurtle\n  units, run CAN bus, or need to integrate a toolhead buffer without\n  modifying existing cable assemblies. If you're building the BoxTurtle\n  from scratch, order the BTIO alongside the main kit — installing it during\n  the initial build is significantly easier than retrofitting it later.\n\u003c\/p\u003e\n\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/github.com\/ArmoredTurtle\/AFC-Accessories\/tree\/main\/BTIO\" target=\"_blank\" rel=\"noopener\"\u003e\n      ArmoredTurtle GitHub — BTIO STL files, wiring diagrams, and installation guide\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/www.armoredturtle.xyz\/docs\/boxturtle\/wiring-guide.html\" target=\"_blank\" rel=\"noopener\"\u003e\n      ArmoredTurtle Documentation — BoxTurtle Wiring Guide (CAN, USB, power routing)\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n  Explore the full BoxTurtle accessory ecosystem at\n  \u003ca href=\"\/collections\/3d-printer-electronics\"\u003e3D Printer Electronics\u003c\/a\u003e,\n  or browse all compatible upgrades at\n  \u003ca href=\"\/collections\/3d-printer-upgrades\"\u003e3D Printer Upgrades\u003c\/a\u003e.\n\u003c\/p\u003e","brand":"West3D 3D Printing Supplies","offers":[{"title":"Default Title","offer_id":52735669895462,"sku":"LDO2782","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/1986\/2822\/files\/box-turtle-afc-io-board-input-output-box-turtle-west3d-3d-printing-supplies-ldo-systems-962710.png?v=1773259448","url":"https:\/\/supplies3d.shop\/products\/box-turtle-afc-io-board-input-output-box-turtle-bt-io","provider":"SUPPLIES3D","version":"1.0","type":"link"}