Brainco Revo 2 Touch Biomimetic Dexterous Left Hand (XTL)

Every robotic hand is sold on what its motors can do; the more interesting engineering decision is where the designers chose not to put a motor at all. In the Brainco Revo 2 Touch Biomimetic Dexterous Left Hand (XTL), the split between driven and passive joints is the heart of the design: the published material describes a thumb with two active degrees of freedom for abduction and adduction plus a passive flexion/extension joint, while each of the other four fingers pairs one active flexion/extension joint with one passive one. That architecture — command where command matters, compliance where contact happens — is what makes the Touch version of BrainCo's second-generation hand a candidate for serious manipulation work rather than a demonstration prop.

Robots Europa, based in Dublin, supplies the Revo 2 Touch left hand to universities, research institutes and robotics companies across the EU and the DACH region. Quotation, delivery, customs handling and after-sales support for European buyers are all arranged through Robots Europa, with documentation and integration questions handled before an order is placed.

Background

BrainCo and its lineage

BrainCo is best known for work at the border between neuroscience and robotics: brain–machine interfaces, intelligent prosthetics and, increasingly, dexterous end-effectors for humanoid platforms. That prosthetics heritage matters for a product like this one. A hand designed with human users in mind tends to prioritise biomimetic proportions, graceful finger kinematics and safe interaction with everyday objects — qualities that transfer directly to humanoid robotics, where the hand must operate in environments built for people. The Revo line is BrainCo's dexterous-hand family, and the second generation follows the BrainCo Revo 1 Intelligent Dexterous Bionic Hand, carrying the same biomimetic approach into a platform explicitly aimed, per the published description, at robot integration and research.

Positioning within the Revo 2 family

The sources name three trims of the Revo 2: Basic (version codes XRL/XRR), Pro (XEL/XER) and Touch (XTL/XTR). The product on this page is the Touch trim in its left-hand configuration, code XTL. According to the published material, the Pro and Touch versions support three communication interfaces — RS485, CAN FD and EtherCAT — with the physical interface located below the wrist, which is a practical detail for anyone routing cables through a humanoid forearm. The Touch designation marks it as the tactile-oriented member of the family; buyers should confirm the exact tactile sensing configuration against the datasheet at quotation, as the specification available to us does not detail it.

Technical Specifications

Specifications as published by the manufacturer; all figures are confirmed against the current datasheet at quotation.

What makes the Touch version different from the Basic and Pro?

The naming is the first clue: Touch is the tactile-oriented trim, positioned above the Basic (XRL/XRR) and Pro (XEL/XER) configurations in the family. What the published specification lets us state firmly is how the upper trims are wired: both the Pro and the Touch carry the three-bus arrangement — RS485, CAN FD and EtherCAT — with the connection point below the wrist. For an integrator, that flexibility is not a luxury. RS485 suits simple, low-cost links; CAN FD fits teams already running automotive-style field buses; EtherCAT matters to anyone synchronising the hand with a real-time industrial control chain. A hand that speaks all three can move between projects without rewiring the lab. Where the Touch pulls ahead of the Pro is in its tactile remit — the capability its name advertises — and the precise sensing specification should be confirmed against the datasheet at quotation, since the manufacturer's published material available to us does not enumerate it.

Why does the degree-of-freedom layout matter in practice?

A fully actuated finger is expensive, heavy and, paradoxically, often worse at grasping than a partially passive one. The Revo 2's reported layout — active flexion on every finger, active abduction and adduction on the thumb, passive joints distributed through the hand — means the fingers can conform to an object's shape without the controller micromanaging every knuckle. Combined with the reported 0.1° control precision and a pinch force reported at ≥15N, the hand is specified to be both commandable and compliant. The closed-loop servo control and the protection suite — current, stall, high-temperature and collision protection, per the published specification — are what allow a research team to run aggressive grasping experiments without treating every failed grasp as a potential hardware loss. Custom gesture definitions round this out: repeatable hand postures can be stored and triggered rather than reconstructed joint by joint.

Who is the Revo 2 Touch Left Hand for?

The natural buyers are humanoid-robot integrators fitting a left end-effector, manipulation and grasping researchers, and AI teams collecting contact-rich interaction data where tactile capability is the point of the purchase. Teams building a bimanual platform will pair this unit with the Brainco Revo 2 Touch Biomimetic Dexterous Right Hand (XTR); the published material notes the left hand ships with default device ID 126 and the right with 127, so the pair can share a bus without an addressing clash. A laboratory that needs the three-bus communication and precision mechanics but not the tactile trim is better served by the BrainCo Revo 2 Pro Dexterous Left Hand (XEL), while teaching environments and first integrations may find the BrainCo Revo 2 Basic Left Dexterous Bionic Hand (XRL) the sensible entry point. The full family is listed in the BrainCo Revo 2 category.

What is the Revo 2 Touch Left Hand used for?

1. Humanoid robot end-effector: a biomimetic left hand for humanoid platforms operating in environments designed for people.
2. Manipulation research: grasping, in-hand manipulation and contact studies where passive compliance and fine control precision are both required.
3. Machine-learning data collection: gathering grasp and interaction data for imitation learning and reinforcement-learning pipelines through the Linux, Windows and ROS SDKs.
4. Teleoperation: serving as the remote hand in operator-driven manipulation set-ups, with custom gesture definitions for repeatable postures.
5. Industrial R&D prototyping: evaluating dexterous handling of irregular parts over RS485, CAN FD or EtherCAT within an existing control architecture.
6. Human–robot interaction studies: experiments where a hand of human form and behaviour is essential to the research question.

Pricing and Availability

Robots Europa does not publish list pricing for the Revo 2 Touch left hand; configuration, institutional terms and project scope all shape the final figure, so quotation is the route to an accurate number. Delivery, customs clearance and after-sales support for EU and DACH buyers are arranged together with the quotation. A quotation request for the Brainco Revo 2 Touch Biomimetic Dexterous Left Hand (XTL) is available on this page.

Frequently Asked Questions

How does the left hand differ from the right hand?

The XTL is the mirrored left-hand configuration of the Touch trim; the right hand carries the code XTR. Per the published material, the left hand's default device ID is 126 and the right hand's is 127, so both can sit on one bus out of the box.

Which communication interfaces does it support?

The published specification states that the Pro and Touch versions support RS485, CAN FD and EtherCAT, with the interface located below the wrist.

What software support is provided?

An SDK supporting Linux, Windows and ROS workflows is reported, which covers the typical research and integration environments.

How is the hand protected during experiments?

The device is reported to include closed-loop servo control together with protections against overcurrent, stall, high temperature and collision conditions.

What is included in the box?

The manufacturer has not published the box contents; they are confirmed against the current datasheet at quotation.

Does it have an IP rating?

No IP rating has been published for this product. If ingress protection matters for your deployment, raise it with the quotation request so it can be confirmed with the manufacturer.

Where can I buy the Revo 2 Touch Left Hand and what does it cost?

Robots Europa supplies the Brainco Revo 2 Touch Biomimetic Dexterous Left Hand (XTL) across the EU and the DACH region. Pricing is provided individually by quotation, requested directly from this page.

Summary

The Revo 2 Touch left hand earns attention not for any single headline number but for how its freedoms are distributed: driven joints where the controller needs authority, passive joints where contact needs forgiveness, three industrial buses below the wrist and an SDK that meets researchers where they already work. For European teams specifying a tactile-generation left hand for humanoid or manipulation research, with quotation, delivery and support handled by Robots Europa, this page is the starting point.