BrainCo’s 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 multi‑dimensional tactile perception capabilities, is industry‑leading in stable mass production, and ensures reliable quality. It supports multiple communication protocols including RS‑485, CAN‑FD, and EtherCAT, with a maximum communication frequency of 1kHz, enabling high‑speed real‑time communication. In addition, it provides an SDK, is compatible with Linux, Windows, and ROS, and supports high‑speed 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. Specification 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 11（6 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 Noise（50cm） ≤50dB Flexion and Extension speed ≤0.65s Communication interface 485CANfd 485CANfdEtherCAT 485CANfdEtherCAT 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 controlCascaded control, compliance control Position, velocity, current feedback controlCascaded control, compliance controlTactile 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 Product size Degree of freedom distribution 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. Range of motion 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 Definition of the back of hand light status 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 Back of hand button function description Function Button Reset Short press Restore factory settings Long press for 5 seconds Pack gesture Short press 2 times Motor ID and status 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 Control mode description 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 Description Turbo mode is implemented based on the stall function. After the motor stalls for a defined stall time, it resumes movement, periodically executing stop‑and‑continue motion. In scenarios requiring reliable gripping, we provide Turbo mode, where every 500ms the fingers actively grip, achieving a sustained and reliable gripping force. Device ID description 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. Description of the power-on self-reset mode 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. Communication interface description Revo 2 Basic The basic version of the second‑generation hand supports communication and control via RS‑485 or CAN‑FD interfaces. The connector is located beneath the wrist, with the model specified as BM05B‑PASS‑TFT(LF)(SN). Revo 2 Pro&Touch The advanced (Pro) and tactile (Touch) versions of the second‑generation hand support three communication interfaces—RS‑485, CAN‑FD, and EtherCAT—for 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 Resources Product Manual Revo 2 Product Manual PC software Windows Client_V0.0.19 Firmware Revo 2 Basic 485 / CAN FD General_V1.0.20U Revo 2 Pro 485 / CAN FD General_V1.0.20U EtherCAT / CAN FD General_wrist plateV0.0.6 EtherCAT / CAN FD General_ctrl plateV1.0.10.F.1 Revo 2 Touch 485 / CAN FD General_V1.0.20U EtherCAT / CAN FD General_wrist plateV0.0.8 EtherCAT / CAN FD General_ctrl plateV1.0.10.F.1 CAN 2.0 Support CAN 2.0 Procotol_V1.0.6.C URDF BrainCo Hand Revo2 URDF - ROS1 BrainCo Hand Revo2 URDF - ROS2 MuJoCo Wrist interface drawings & Connector models BrainCo Revo2 Basic Version Interface Module BrainCo Revo2 Pro & Touch version interface Module
