# Stringman, an $800 open\-source room scale gripper robot

- HackerByte page: <https://hackerbyte.net/en/stories/an-800-open-source-room-scale-gripper-robot-arm-has-been-announced-50354358>
- Original source: <https://neufangled.com/>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50354358>
- Submitted to Hacker News: 2026-11-03T16:47:29.000Z

An $800 open\-source room\-scale gripper robot arm has been announced.

## AI-generated summary

Stringman is an innovative, open\-source gripper robot designed to operate within the entire volume of a room. Utilizing a cable\-driven architecture with four motors anchored to ceiling corners, it offers a significant payload capacity and reach, surpassing traditional robotic arms and mobile robots in terms of work volume per dollar. The system is controllable via a local network, emphasizing user control and data privacy.

## Key points

- Operates in a 7x7x3m room using ceiling\-anchored lines and four motors.
- Achieves an average payload of 1.9 kg, with peaks up to 2.2 kg.
- Offers 500x more work volume per dollar compared to typical research arms.
- Fully open\-source, with all CAD, PCBs, and software published.
- Can run air\-gapped on a local network for enhanced privacy and control.