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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 the system at $795 and reports an average payload of 1.9 kilograms in a specified 7-by-7-by-3-meter room; independent performance verification and details of the price’s scope are not provided in the supplied material.
Neufangled Robotics is presenting Stringman, a cable-driven robot that uses four ceiling-mounted anchors and a suspended gripper to move objects across a room. The company lists the open-source system at $795 and says it can carry an average payload of 1.9 kilograms in a specified 7-by-7-by-3-meter room, offering a different approach to reaching household or laboratory work areas than a conventional robotic arm.
Stringman’s four anchor units mount near the ceiling corners, with lines connected to a gripper that moves within the area they define. Neufangled says the design distributes lifting force across the motors rather than relying on a single arm actuator. Its listed specifications give a maximum payload of up to 2.2 kilograms near the floor and an average of 1.9 kilograms in the stated test geometry, with a line-tension limit of 28 newtons. The reported payload figures account for the gripper and marker’s 638-gram weight.
The maker lists a traverse speed of about 0.4 meters per second. The system uses two anchor cameras operating at 1920-by-1080 resolution and 30 frames per second, plus a wide-field gripper camera at 684-by-384 and 60 frames per second. A computer supplied by the user runs the controller; the robot’s Raspberry Pi units handle the gripper and anchors. Setup uses 5 GHz Wi-Fi for the anchors, while the gripper uses 2.4 GHz.
Neufangled says the mechanical CAD files, circuit-board designs and control software are published, and describes Stringman as open source and OSHWA certified. The company says the interface can run locally on a Wi-Fi network, with AI models hosted on the user’s hardware and data kept off external networks in that configuration. The listed installation options require securing mounts to wall studs or structural columns. The maker says calibration takes about five minutes after mounting and connecting the lines.
A Different Kind of Room-Scale Robot
Stringman’s premise is to exchange the mobility of a wheeled or legged robot for a fixed overhead cable system. That could be useful in a home laboratory or workshop where floor space is crowded and objects need to move between stations. The robot’s reach is determined by the anchor layout, so it is not limited to the radius of a desktop arm; it also cannot simply be moved to another room without reinstalling and calibrating its hardware.
The company compares its system with a 0.75-meter serial arm using the same model of direct-drive actuator. For a 7-by-7-by-3-meter room, it reports 185 cubic meters of work area per $1,000, compared with 0.35 cubic meters for the arm, and characterizes the difference as roughly 500 times. Those are the maker’s calculations, based on its selected room and comparison arm, not an independent assessment. The figures help explain the design’s appeal but do not capture installation, safety, reliability or the range of tasks either system can perform.
For developers, published hardware and software could make the system easier to inspect or adapt than a closed commercial robot. Neufangled also advertises a Python API and MCP server for connecting it to automation workflows. How well those tools work across different environments, and what the complete installed cost is for a particular room, is not established in the supplied material.
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How the Cable System Works
Unlike a conventional robotic arm, Stringman suspends its gripper from lines connected to four anchors near the ceiling. Coordinated changes in line length position the gripper across the bounded work area. Neufangled says the system can fit rooms with XY diagonals from 3 to 10 meters and heights from 2.3 to 4 meters, subject to suitable mounting points and room layout.
The design addresses a practical trade-off: overhead lines may avoid floor clutter, but they remain present while the robot is installed. The company says they sit near the ceiling when the gripper is parked. Rooms with low-hanging objects in the central work area may not be suitable; the maker says the work area can sometimes be reduced to avoid fixtures. It also describes mounting the anchors at or below ceiling-fan blade height so the lines cannot reach the fan.
Neufangled reports that Stringman has accumulated about 1,000 hours of testing in real homes. The source does not identify the number of units involved, publish independent test results, or provide a detailed breakdown of the conditions and tasks in those tests. It also lists a $795 price but does not specify in the supplied material whether that amount includes every component, shipping, mounting hardware or the computer needed to run the controller.
““Tension is all you need.””
— Neufangled Robotics
Price, Safety and Performance Questions
The supplied announcement does not include independent validation of Stringman’s payload, speed, room coverage or comparison with a robotic arm. The company’s calculations specify a particular room size, actuator and payload accounting, but do not establish performance across all supported room layouts or tasks. It is also unclear whether the advertised $795 price covers a complete ready-to-install kit or excludes parts and equipment the buyer must supply.
Installation depends on secure attachment to studs or structural columns, and the lines cross the room while the robot is operating. Neufangled says the motors relax when line tension reaches 28 newtons, allowing the lines to be pulled loose, and says collisions are uncommon because the lines are usually overhead. The source does not provide independent safety testing or detail how the system responds to every possible failure, such as a mount coming loose or a line snagging. Buyers would need to assess their own room and installation conditions.
The maker says local operation can keep robot data on the user’s network, while its FAQ also describes an optional remote-access service using the company’s servers. The supplied information does not explain the remote service’s full technical safeguards or terms. Those details, along with broader availability and support arrangements, remain unclear.
Installation and Open-Source Access
Neufangled’s site directs interested users to the robot’s STL files, bill of materials, build guide and code. The next practical step for prospective users is to check whether their room has suitable mounting points, enough clearance around lights or fans, and a computer capable of running the controller. The maker says users can mount the anchors, connect the lines and run a calibration process that takes about five minutes.
The source material does not give a dated shipping schedule, a confirmed retail availability date, or a timeline for independent testing. Further information about the kit’s included parts, installation support, warranty and remote-access terms would help readers judge the full cost and responsibilities of using the system.
Key Questions
What is Stringman?
Stringman is a cable-driven robot from Neufangled Robotics. Four anchors mounted near the ceiling control lines that suspend and move a gripper through a defined room area.
How much does Stringman cost, and what can it carry?
Neufangled lists the system at $795. The company reports an average payload of 1.9 kilograms in a 7-by-7-by-3-meter room and up to 2.2 kilograms near the floor. The supplied information does not clarify every item included in the price.
Does Stringman need a computer or internet access?
The controller runs on a user-supplied computer, with Raspberry Pi devices on the gripper and anchors. Neufangled says the system can run on a local Wi-Fi network without sending data outside it; remote operation is described as an optional service rather than the default setup.
Can it be installed in a room with a ceiling fan?
The maker says installation may work if anchors are mounted at or below the fan blades so the lines cannot reach them. It says rooms with low-hanging objects in the center of the work area may not be suitable.
What remains unverified?
The supplied source gives the company’s specifications and comparisons, but does not provide independent performance or safety testing. The full contents of the $795 offering, broader availability and remote-service safeguards are also not specified.
Source: neufangled.com
