LDO MOTION BoxTurtle AFC BT-IO Control Board | Box Turtle IO Module for Klipper Multi-Material System

The Central I/O Hub for Multi-Material Systems

The LDO BT IO Board (BT-IO / AFC IO Board) is a purpose-built I/O expansion module from LDO Motion, designed specifically for the BoxTurtle Automatic Filament Changer.

But it does more than just control things — it acts as a system-wide integration hub, pulling multiple devices together into one unified, stable, and scalable setup.

Designed to:

· Cut wiring complexity in multi-material builds

· Deliver clean signal distribution and dependable power management

· Support multi-unit cascade expansion (simply link board to board for larger systems)

· Boost long-term system reliability

At its core, the BT IO Board turns messy, fragmented wiring into a clean, organized, and easy-to-maintain system.

Official Ecosystem

· LDO BoxTurtle AFC

· LDO Leviathan & other Klipper-based control systems

· Raspberry Pi / Klipper host systems

Supported Platforms

· Voron series (2.4 / Trident / V0)

· Multi-material systems (MMU / ERCF-style setups)

· USB / UART-controlled devices

Expansion Capabilities

· Cascade support for multiple units (link board to board)

· Toolhead Buffer signal management

· Hybrid power input (USB + external supply)

Basic Setup Steps:

1. Securely mount the BTIO board in your system

2. Connect it to your main controller (Klipper / Raspberry Pi)

3. Integrate the Toolhead Buffer

4. Set up the AFC system

5. Run a few filament switch tests to confirm everything works

Tips for a Smooth Setup:

· Double-check USB orientation before powering up

· Follow official wiring diagrams

· Avoid mixing non-standard configurations

GitHub BTIO

What’s Included

· BT IO Main Board ×1

· Connector / Terminal Kit ×1

· Mounting Hardware (varies by version)

· Documentation / QR code guide

What Users Are Saying:

· Significantly cleaner cable management

· Noticeably better system stability

· Moderate learning curve for setup

FAQ

Q1: How is this different from a standard I/O expansion board?
A: The BT IO Board is specifically designed for the BoxTurtle ecosystem. Key differences include::

· Advanced signal integration

· Native cascade expansion (link multiple boards together)

· Optimized Toolhead Buffer design

Q2: Can I use it with other multi-material systems?
A: In theory, yes—but full compatibility and optimal performance are only guaranteed within the LDO BoxTurtle / AFC ecosystem.

Q3: Does it require soldering?
A: No. It is designed as a plug-and-play solution with a clean, user-friendly wiring layout.

Q4: Is it beginner-friendly?
A: Not for absolute beginners. We strongly recommend prior experience with Klipper or Voron systems.