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BrainCos intelligent bionic dexterous hand Revo 2 is developed through the mature technological iteration and upgrade of prosthetic hands and the Revo 1 dexterous hand, carrying forward the stability and high performance of its predecessor. The Revo 2 is equipped with 6 motors, features 6 active joints, and offers a total of 11 degrees of freedom. It weighs only 383g, measures 160mm, delivers an active gripping force of 50N, and supports a maximum load of 20kg, achieving an exceptional balance of extreme load capacity with a lightweight, compact, and bionic aesthetic design.
The Revo 2 can be configured with multidimensional tactile perception capabilities, is industryleading in stable mass production, and ensures reliable quality. It supports multiple communication protocols including RS485, CANFD, and EtherCAT, with a maximum communication frequency of 1kHz, enabling highspeed realtime communication. In addition, it provides an SDK, is compatible with Linux, Windows, and ROS, and supports highspeed secondary development.
With features such as customizable gestures, multiple protection mechanisms, advanced servo control algorithms, tactile adaptive gripping, and OTA online upgrades, the Revo 2 facilitates the rapid implementation of dexterous scenarios, making it a powerful and versatile solution in the field of intelligent bionic hands.
| Product name | Product rendering image | ||
|---|---|---|---|
| Biomimetic dexterous hand Revo2 | Standard colors: Space Gray, Silver (supports bulk color customization) | ||
| Model | BASIC | PRO | TOUCH |
| Version code | XRL/XRR | XEL/XER | XTL/XTR |
| Main parameters | degree of freedom | 116 active | |
| Weight | 383 g | ||
| Height (from the base of the palm to the tip of the middle finger) | 160 mm | ||
| Grip strength of five fingers | 50N | ||
| Pinch strength | 15N | ||
| Full load | 20kg | ||
| Operating Noise50cm | 50dB | ||
| Flexion and Extension speed | 0.65s | ||
| Communication interface | 485 CANfd |
485 CANfd EtherCAT |
485 CANfd EtherCAT |
| Supply voltage | 12-28V | 12-64V | 12-64V |
| Static Current | 65 mA @24V | 115 mA @24V | 115 mA @24V |
| No-load Average Current (five-finger flexion and extension) | 350mA @24V | 390mA @24V | 390mA @24V |
| Maximum Current | 4.6 A @24V | 4.65A @24V | 4.65A @24V |
| Repetitive control precision | 0.1 | 0.1 | 0.1 |
| Maximum opening and closing distance | 100mm(from thumb to index finger) | ||
| Operating temperature | -10 – 40 / 90%RH | ||
| Tactile module | / | Multi-dimensional fingertip tactile module | |
| Smart Control | Position, velocity, current feedback control Cascaded control, compliance control |
Position, velocity, current feedback control Cascaded control, compliance control Tactile Adaptive Control |
|
| Smart Protection | Current protection, stall protection, high-temperature protection, anti-collision protection | ||
| Secondary development | SDK supports Python/C and is compatible with Linux/Windows/ROS systems. | ||
| Online upgrade | Support OTA online upgrades |
Revo 2 dexterous hand features 6 active joints and a total of 11 degrees of freedom. The thumb provides two active degrees of freedom for abduction and adduction, along with one passive degree of freedom for flexion and extension, while each of the remaining four fingers offers one active degree of freedom for flexion and extension and one passive degree of freedom for flexion and extension.
| Active Joint | Degrees of Freedom | Minimum Angle () | Maximum Angle () |
|---|---|---|---|
| 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 |
| Light Effect | Description |
|---|---|
| Green light blinking | Powering on (not completed reset) |
| Green light solid | Normal operation (reset completed) |
| Yellow light blinking | Power supply too low |
| Cyan light solid | OTA upgrading in progress |
| Red light solid | Abnormal |
| Function | Button |
|---|---|
| Reset | Short press |
| Restore factory settings | Long press for 5 seconds |
| Pack gesture | Short press 2 times |
| Motor ID | Description |
|---|---|
| FINGERID_THUMB | Thumb Flex |
| FINGERID_THUMB_AUX | Thumb Aux |
| FINGERID_INDEX | Index |
| FINGERID_MIDDLE | Middle |
| FINGERID_RING | Ring |
| FINGERID_PINKY | Pinky |
| Motor status | Description |
|---|---|
| MOTOR_IDLE | Joint Idle |
| MOTOR_RUNNING | Joint Running |
| MOTOR_STALL | Joint Stall |
| MOTOR_TURBO | turbo |
| Serial Number | Control Mode | Description |
|---|---|---|
| 1 | Position + Time | Arrive at the exact location within the precise time; when time is not specified, arrive at the designated location at maximum speed. |
| 2 | Position + Speed | Reach the target position at the target speed; when the speed is not specified, reach the target position at maximum speed. |
| 3 | Speed | Move at the target speed until the limit is reached or it is stalled. |
| 4 | Current | Controlled at the target current until the limit or stall. |
| 5 | PWM | Control with the target PWM until the limit is reached or it stalls. |
Turbo mode is implemented based on the stall function. After the motor stalls for a defined stall time, it resumes movement, periodically executing stopandcontinue motion. In scenarios requiring reliable gripping, we provide Turbo mode, where every 500ms the fingers actively grip, achieving a sustained and reliable gripping force.
For Revo 2, default ID for the left hand is 126, and for the right hand, it is 127. Users can modify them within the range of 1 – 254.
The automatic reset upon powering on refers to the dexterous hand automatically performing position calibration after being powered on. During startup, the dexterous hand will search for the initial finger positions, and all fingers will be activated in the process.
Note 1: During position calibration, if the dexterous hand is gripping an object, there is a risk of dropping it. Note 2: After powering on, position calibration must be completed once to enable normal control.
The basic version of the secondgeneration hand supports communication and control via RS485 or CANFD interfaces. The connector is located beneath the wrist, with the model specified as BM05BPASSTFT(LF)(SN).
The advanced (Pro) and tactile (Touch) versions of the secondgeneration hand support three communication interfacesRS485, CANFD, and EtherCATfor communication and control, with the interface also positioned below the wrist.
| Interface | Connector Model |
|---|---|
| 485 | A1257WV-S-2P-6T |
| CAN FD | A1257WV-S-2P-6T |
| EtherCAT | A1257WV-S-5P-6T |
| VCC | XT30UPB-M |
BrainCo Hand Revo2 URDF – ROS1
BrainCo Hand Revo2 URDF – ROS2
MuJoCo
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