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Neufangled Robotics describes Stringman as an open-source, cable-driven robot that moves a gripper through a room using four ceiling-mounted anchors. The company lists it at $795 and reports an average payload of 1.9 kg in a specified room setup; independent performance and safety testing details are not provided in the supplied material.
Neufangled Robotics is presenting Stringman, a $795 open-source room-scale robot that uses four ceiling-mounted cable anchors to move a gripper around a room. The company says the system averages a 1.9 kg payload in a specified 7 × 7 × 3-meter room, offering a different approach from wheeled robots and fixed-base robotic arms.
Stringman works by suspending a gripper from lines connected to four anchors mounted near the ceiling. The motors adjust the lines to position the gripper within the area they define. Neufangled says the design can reach floor space that may be difficult for robots on wheels or legs to cross, including areas obstructed by clutter. Its stated traverse speed is about 0.4 meters per second.
The company lists payload capacity as up to 2.2 kg near the floor and 1.9 kg on average for the cited room configuration. Those figures are reported at a 28-newton line-tension limit and are net of the 638-gram gripper and marker. The maker also compares Stringman with a 0.75-meter, seven-actuator arm using the same actuator model, reporting average payloads of 1.9 kg and 0.32 kg respectively. The comparison is the company’s calculation, not an independent test result.
The robot uses Raspberry Pi Zero 2W hardware in the gripper and Raspberry Pi 3A+ units at the anchors, while a separate computer runs the controller. Neufangled says setup uses Wi-Fi and QR codes, with calibration taking about five minutes. It lists 3D-printed parts and says mechanical CAD, circuit-board designs, software, a bill of materials and build instructions are available. The project is described as open source and OSHWA certified.
A Different Way to Cover a Room
Stringman’s central proposition is that a robot does not need to travel across the floor to reach different parts of a room. Instead, its cable-driven layout uses ceiling space and four motors to move one gripper across a broad work area. That could be useful in home labs, where it might carry small components between workstations or serve as a movable tool for other robots.
The price and reach figures may attract builders who find conventional industrial arms costly or too limited to a fixed radius. Neufangled estimates 147 cubic meters of work area for its example Stringman installation and compares that with a 0.88-cubic-meter hemisphere for a research arm. It presents this as roughly 500 times more work volume per dollar at comparable payload, but the figures depend on the selected room and arm assumptions. They should be read as a vendor comparison, not a general measure of robot performance.
The approach also trades floor-level obstacles for lines that remain installed overhead. That is a practical consideration for homes and shared workspaces: owners need suitable mounting points, adequate ceiling clearance and tolerance for cables spanning the room. The system’s usefulness will depend on whether its reach and payload outweigh those installation constraints for a particular space.
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How the Cable System Works
In a conventional serial robotic arm, joints and links extend from a fixed base, and the arm’s reach is limited by its geometry. Stringman instead places anchors around the perimeter near the ceiling; the lines converge at the gripper, which can be moved within the area they enclose. Neufangled says it supports rooms with XY diagonals between 3 and 10 meters and heights from 2.3 to 4 meters.
The manufacturer says anchors can be secured to wooden studs behind drywall or attached to structural columns with straps. It recommends placing them at or below ceiling-fan blade height so lines cannot reach the fan. The company also says low-hanging objects in the center of a room can make installation unsuitable. When parked, the lines sit near the ceiling, though they remain present while the system is installed.
Neufangled reports about 1,000 hours of testing in real homes. It says the local interface and locally run AI models can operate on a home network without data leaving that network. Remote access is a separate option: the source says users can bind a robot to an account through the company’s service to control it remotely. The supplied material does not describe an independent evaluation of either the privacy claims or the reported performance.
““Tension is all you need.””
— Neufangled Robotics
Performance and Installation Questions
The source is a product description from the robot’s maker. It does not provide independent test results, a detailed testing protocol or a breakdown showing how payload varies throughout different room geometries. The stated 1.9 kg average payload applies to a particular 7 × 7 × 3-meter setup, with a specified tension limit and gripper weight deduction; results in other rooms may differ.
Some practical and safety details also remain unclear from the supplied information, including how performance changes with repeated use, how the system behaves after a component failure, and what procedures are recommended for installations with people or pets moving beneath the lines. Neufangled says the motors relax and lines can be pulled loose when tension reaches 28 newtons, but no independent safety assessment is cited. The source also does not state a confirmed shipping schedule, availability level or warranty terms.
Availability and Builder Evaluation
Neufangled’s site provides a bill of materials, build guide, CAD files, software and setup instructions for people who want to assemble or evaluate the system. Prospective users will need a suitable room, secure anchor points, a drill and a computer to run the controller. The company says calibration is designed to adapt the robot to its room after installation.
The next useful evidence will be hands-on reports documenting setup, payload across the working area, reliability and safe operation in different homes and lab environments. Readers considering a build should check the current parts list and mounting requirements, and distinguish the manufacturer’s performance figures from results tested independently. The supplied source does not confirm a broader retail launch timeline or pricing beyond the listed $795 figure.
Key Questions
What is Stringman?
Stringman is a cable-driven robot from Neufangled Robotics. Four ceiling-mounted anchors guide lines attached to a gripper, allowing it to move objects through a defined room-sized work area.
How much does Stringman cost, and what can it carry?
The company lists the system at $795. It reports payload capacity of up to 2.2 kg near the floor and an average of 1.9 kg in a specified 7 × 7 × 3-meter room, with figures calculated at a 28-newton line-tension limit.
Does Stringman need a special computer or internet connection?
The product description says a separate computer runs the controller, while Raspberry Pi units are installed at the gripper and anchors. Neufangled says the interface and AI models can run locally on a Wi-Fi network; remote operation is an optional account-based feature.
Can Stringman be installed in a room with a ceiling fan?
Neufangled says it can be installed if anchors are placed at or below the fan blades so the lines cannot reach them. The company warns that low-hanging objects in the center of a room can make a space unsuitable.
Are its performance and safety claims independently verified?
The supplied product material reports the maker’s specifications and testing experience, including about 1,000 hours in real homes. It does not cite independent performance testing or a third-party safety assessment.
Source: neufangled.com
