Dexterity Hand Revo 2
- 11 DoF / 6 Active Joints: Thumb abduction/adduction (0–90°), thumb
flexion/extension (0–59°), and per-finger flexion/extension (0–81°) across
6 servo-driven actuated joints with 5 passive linkage joints — enabling
natural hand conformation around varied object shapes and sizes. - • Human-Scale Dimensions: 160 mm hand length, 78.5 mm maximum palm width,
92 mm thumb length, 38 mm wrist diameter, and 13.5 mm wrist height at
383 g total weight — anthropometric proportions for direct compatibility
with humanoid robot arms and prosthetics platforms. - • ≥20 kg Payload at 383 g: Full-fist grip force ≥50 N, pinch force ≥15 N,
maximum payload ≥20 kg, 100 mm thumb-to-index opening distance, and
flexion/extension cycle in ≤0.65 s — real handling capacity in a compact,
lightweight form factor. - • ±0.1° Precision — 5 Control Modes: Closed-loop servo control across
Position + Time, Position + Speed, Speed, Current, and PWM modes with
0.1° repetitive precision; plus Turbo Mode for sustained grip on soft or
shifting objects via 500 ms re-engagement after stall detection. - • RS485 / CAN FD + Python/C SDK: RS485 and CAN FD communication on a
12–28 V supply; Python/C SDK for Linux, Windows, and ROS; OTA firmware
upgrades; and 4-layer hardware-level smart protection (current, stall,
high-temperature, anti-collision) built in as standard.
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
Dexterity Hand Revo 2
A human-mimicking robotic hand with 11 degrees of freedom, 6 active joints, and ±0.1° control precision — with RS485 and CAN FD communication for robotics integration and research.
Bionic Dexterous Hand for Robot Integration and Research
The BrainCo Revo 2 is a biomimetic dexterous hand engineered for seamless integration into robotic systems and advanced research applications. It delivers 6 active joints and 11 degrees of freedom — closely mirroring human hand anatomy — with the thumb providing two active degrees of freedom (abduction/adduction 0–90°, flexion/extension 0–59°) and each of the four remaining fingers contributing one active degree of freedom (flexion/extension 0–81°). Weighing 383 g and measuring 160 mm hand length (middle fingertip to palm base), with a maximum palm width of 78.5 mm, thumb length of 92 mm, wrist diameter of 38 mm, and wrist height of 13.5 mm. It achieves ≥50 N full-fist grip force, ≥15 N pinch force, and a maximum payload of ≥20 kg — communicating over RS485 and CAN FD on a 12–28 V supply, with Python/C SDK support on Linux, Windows, and ROS, OTA firmware upgrades, and four-layer smart protection as standard.
Built Around Four Principles
Engineering That Mirrors the Human Hand
11 DoF — 6 Actuated, 5 Unactuated Joints
The Revo 2 distributes its 11 degrees of freedom across a carefully designed active-passive joint architecture. 6 joints are actuated — driven by closed-loop servo motors — and 5 are unactuated, following naturally through linkage mechanics during movement. The thumb carries two active degrees of freedom: flexion/extension (0–59°) and abduction/adduction (0–90°), giving it the lateral sweep range essential for pinch grasps and tool handling. Each of the four remaining fingers has one active degree (flexion/extension 0–81°) and one passive degree, enabling the hand to conform naturally to objects of varying geometry. Maximum thumb-to-index-finger opening distance is 100 mm. Full-fist grip force reaches ≥50 N; pinch force ≥15 N.
Compact Form Factor — Human-Scale Dimensions
The Revo 2 is designed to match human hand proportions precisely, enabling drop-in use on humanoid robot arms, prosthetics platforms, and research rigs that require a hand within human anthropometric bounds. Hand length from palm base to middle fingertip is 160 mm. Maximum palm width is 78.5 mm. Thumb length measures 92 mm. The wrist section has a diameter of 38 mm and height of 13.5 mm — a compact mounting interface that fits standard end-effector flanges. At 383 g total weight, it adds minimal inertia to the robot arm's payload budget.
Five Control Modes for Every Application
The Revo 2 supports five distinct motor control modes: Position + Time (reach target within a set duration; set to 0 for maximum speed), Position + Speed (reach target at a capped speed), Speed (continuous motion until stall or limit), Current (hold a target current for compliant grasping), and PWM (direct duty-cycle control). Cascaded control and compliance control are both available. Turbo Mode builds on stall detection — when a finger stalls against an object, it pauses, then re-engages at 500 ms intervals to maintain grip on soft or shifting payloads. This flexibility enables the Revo 2 to cover precision positioning, force-sensitive operations, and adaptive grasping within a single hardware platform.
SDK, OTA Upgrades & 4-Layer Smart Protection
The Revo 2 ships with SDK support for Python and C/C++, compatible with Linux, Windows, and ROS environments — covering standard robotics research and development workflows. OTA online firmware upgrades are supported, keeping the device current without physical access. Smart protection is built in at the hardware level: current protection prevents motor overload, stall protection detects blocked joints, high-temperature protection guards internal components, and anti-collision protection allows the hand to respond to unexpected contact. Power-on auto-calibration runs a position sweep to establish joint origins before control is permitted. Default device IDs are 126 (left) and 127 (right), configurable from 1–254.
Six Features That Define the Revo 2
Revo 2 BASIC (XRL/XRR) — Complete Specification
| Specification | Details |
|---|---|
| Model | |
| Product Name | BrainCo Bionic Dexterity Hand Revo 2 |
| Version Code | XRL (Left Hand) / XRR (Right Hand) |
| Physical Dimensions | |
| Hand Length (palm base to middle fingertip) | 160 mm |
| Maximum Palm Width | 78.5 mm |
| Thumb Length | 92 mm |
| Wrist Diameter | 38 mm |
| Wrist Height | 13.5 mm |
| Weight | 383 g |
| Main Performance | |
| Degrees of Freedom | 11 (6 actuated, 5 unactuated) |
| Full Fist Grip Force | ≥ 50 N |
| Pinch Force | ≥ 15 N |
| Max Payload | ≥ 20 kg |
| Max Opening Distance (thumb to index) | 100 mm |
| Flexion / Extension Speed | ≤ 0.65 s |
| Repetitive Control Precision | 0.1° |
| Operating Noise (at 50 cm) | ≤ 50 dB |
| Operating Temperature | −10 ~ 40 °C / 90% RH |
| Power | |
| Supply Voltage | 12–28 V |
| Static Current | 65 mA @ 24 V |
| No-Load Average Current (five-finger flex/ext) | 350 mA @ 24 V |
| Maximum Current | 4.6 A @ 24 V |
| Communication | |
| Interfaces | RS485, CAN FD |
| Connector | BM05B-PASS-TFT(LF)(SN) |
| Interface Location | Below the wrist |
| Control | |
| Smart Control | Position, velocity, current feedback; cascaded control; compliance control |
| Control Modes | Position + Time, Position + Speed, Speed, Current, PWM |
| Turbo Mode | Supported — stall-based re-engagement at 500 ms intervals |
| Tactile Module | Not included |
| Protection | |
| Smart Protection | Current, stall, high-temperature, anti-collision |
| Software & Device | |
| SDK | Python / C — Linux, Windows, ROS |
| Firmware Upgrade | OTA online upgrade supported |
| Default Device ID | Left: 126 / Right: 127 (configurable 1–254) |
| Joint Range of Motion — Active Joints | |
| Thumb Flex (Flexion / Extension) | 0° – 59° |
| Thumb Aux (Adduction / Abduction) | 0° – 90° |
| Index Finger (Flexion / Extension) | 0° – 81° |
| Middle Finger (Flexion / Extension) | 0° – 81° |
| Ring Finger (Flexion / Extension) | 0° – 81° |
| Little Finger (Flexion / Extension) | 0° – 81° |
| Colours | |
| Standard Colours | Space Gray, Silver |
| Custom Colours | Supported for bulk orders |
Common Questions About the Revo 2
What does 11 DoF mean — how many joints are actively driven?
The Revo 2 has 11 degrees of freedom in total, of which 6 are actuated (actively driven by closed-loop servo motors) and 5 are unactuated (passive joints that move through mechanical linkage during finger motion). The thumb has 2 active DoF — flexion/extension (0–59°) and abduction/adduction (0–90°) — plus 1 passive DoF. Each of the four remaining fingers has 1 active DoF (flexion/extension 0–81°) and 1 passive DoF.
What are the physical dimensions of the Revo 2?
Hand length from palm base to the tip of the middle finger is 160 mm. Maximum palm width is 78.5 mm. Thumb length is 92 mm. The wrist section has a diameter of 38 mm and a height of 13.5 mm. Total weight is 383 g. These dimensions are designed to match human hand anthropometric proportions for compatibility with humanoid arms and prosthetic platforms.
What communication interfaces and voltage does this variant support?
The Revo 2 BASIC (XRL/XRR) supports RS485 and CAN FD communication via a BM05B-PASS-TFT(LF)(SN) connector located below the wrist. Supply voltage range is 12–28 V. Static current is 65 mA at 24 V, no-load average current during five-finger flexion/extension is 350 mA at 24 V, and maximum current is 4.6 A at 24 V. If EtherCAT support or a wider voltage range (12–64 V) is required, the PRO or TOUCH variant should be considered.
What control modes does the Revo 2 offer?
Five motor control modes are available: Position + Time (reach a target within a set duration; set to 0 for maximum speed), Position + Speed (reach a target at a specified speed limit), Speed (continuous motion until stall or limit), Current (hold a target current for compliant grasping), and PWM (direct duty-cycle control). Turbo Mode is also available — when a finger stalls against an object, it pauses and re-engages at 500 ms intervals for sustained grip on soft or unstable objects.
Does this variant include fingertip tactile sensing?
No — the Revo 2 BASIC (XRL/XRR) does not include a tactile module. Fingertip tactile sensing (multi-dimensional fingertip tactile module and tactile adaptive control) is exclusive to the Revo 2 TOUCH variant (XTL/XTR). If your application requires reactive grip force adjustment based on real-time contact data, the TOUCH variant should be selected.
The full sheet
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