AB-SO-BOT
July 18, 2026 · View on GitHub
Aluminium Body for Standard Open Arm (SO-ARM100)
🔩 Modular Design
AB-SO-BOT is built using a combination of 3D-printed parts and standard 4040 T-slot aluminium extrusions to create a customizable and modular body for the SO-ARM100 robotic arm designed by TheRobotStudio and HuggingFace.❤️
This modularity allows for easy expansion and adaptation for different robotic applications. From a compact workshop assistant mounted on a camera tripod, to a full humanoid-style bimanual setup using VR controllers teleoperation.
You can find mounting instructions for attaching the so-arm to 4040T profiles in the SO-ARM100 repository.
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🤗 Compatible with LeRobot
State-of-the-art AI for real-world robotics
Also check out 🧪 Phosphobot for web control (GUI + API) and VR bimanual teleoperation
My Huggingface profile (Models & Datasets)
🦾 AB-SO-BOT spotted in the 2025 LeRobot Worldwide Hackathon Kickoff video!
🧩 3D Parts Overview
AB-SO-BOT is built from modular 3D-printed components, each designed to interface with standard M3/M4 hardware and 4040 aluminum extrusions.
📂 Browse all printable files here: STL/
Parts Glossary
4040 Adaptor (Shoulder Mount)
Connects the SO-ARM100 base to 4040 extrusions. See mounting instructions in the SO-ARM100 repo.
The flat version is also available as a STEP file.
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4040-Adapter Flat version 
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4040-Adapter-Curved Rounded style 
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Requires: M4 screws + wing nuts + T-slot nuts
T-Spine
Links horizontal and vertical extrusions. Also acts as the base for ORP mounting. Open Robotic Platform
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TSPINE Standard connector 
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TSPINE-ORP With 4×2 ORP 
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Requires: M4 screws + optional M3 hardware (orp version)
Head
Supports RealSense D435/D435i cameras.
HEAD
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Requires: M3 screws
Neck
Link the head to vertical 4040T. 2 variants
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NECK Default version 
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NECK-VORONOI Voronoi style 
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Requires: M3 screws
Ear
Side-mounted panels for USB, RF, or clean finishing. Fully interchangeable. If you'd like to customize your own panel, the Blank version is also available as a STEP file.
SMA
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Blank
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USB
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USB2
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Requires: M3 screws
🎥 Watch the Demos on YouTube
| Autonomous 3D printing loop | Bimanual teleop demo | AI policy |
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🙌 Thanks for Your Support
If this project is useful or inspiring to you, feel free to give it a ⭐ so others can discover it too.
You're more than welcome to ask questions, share ideas for improvement, or show off what you’ve built!
