Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Accessory Type: Extension Board _x005f_x000D_ Compatible With: for Raspberry Pi 4B or 3B _x005f_x000D_ Working voltage: 5V-12V _x005f_x000D_ Interface: I2C _x005f_x000D_ Size: 65x56x20mm/2.56x2.2x0.79inch _x005f_x000D_ _x005f_x000D_ Product introduction _x005f_x000D_ This expansion board is a full-featured robot expansion version on the market that can support multiple motors/stepper motors/servos (Stepper/Motor/Servo) at the same time, and can be stacked to expand more control interfaces. It is especially suitable for various applications such as DIY robots, smart cars, robotic arms, smart pan/tilts, etc. The control interface simply adopts the I2C interface and is compatible with 3.3V/5V levels, so it is also suitable for other development boards on the market. _x005f_x000D_   _x005f_x000D_ Features _x005f_x000D_ 1. Single power supply, the normal working power supply voltage range is 5V~12V; (Please select the correct input power supply voltage and current according to the motor control voltage you control) _x005f_x000D_ 2. Complete data input/output through the I2C bus for Raspberry Pi, _x005f_x000D_ 3. One I2C interface, compatible with 5V level, can be connected for Arduino or other development boards for control _x005f_x000D_ 4. One I2C interface can be connected to various sensors to expand various applications _x005f_x000D_ 5. The expansion board address is determined by 4 address pins, and 16 expansion boards can be used at the same time. _x005f_x000D_ 6.Support 16 PWM channel outputs _x005f_x000D_ 7.12-bit resolution, adjustable PWM frequency up to 1.6KHz, configurable push-pull or open-drain output _x005f_x000D_ 8. Supports 4-way servo interface, 3P standard interface, convenient for connecting 5V servo and LED lights _x005f_x000D_ 9. Supports 2-channel 6V~12V stepper motors _x005f_x000D_ 10. Supports 4-channel 6V~12V reduction motors _x005f_x000D_ 11. Support infrared receiving function for convenient infrared control _x005f_x000D_ _x005f_x000D_ V2 version update function _x005f_x000D_ 1. Improved 4-way servo interface to make stacking easier _x005f_x000D_ 2. Add a 50Mhz crystal oscillator to the PWM chip to provide a better reference clock _x005f_x000D_ 3. Add an I2C level conversion chip to support 5V level I2C sensor interface (the default for Raspberry Pi only supports 3.3V) _x005f_x000D_ _x005f_x000D_ Product interface description _x005f_x000D_   1. 4-way servo interface (#0, #1, #14, #15) _x005f_x000D_   2. 4-way motor interface (M1, M2, M3, M4) _x005f_x000D_   3. 2-way stepper motor interface (M1+M2, M3+M4) _x005f_x000D_   4. I2C interface _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 X For Raspberry Pi 4B/3B Robot Expansion Board 1.Rich Functionality and Interfaces: This robot expansion board provides a wealth of features and interfaces, ideal for connecting and controlling a variety of robot components and sensors. 2.Motor Driver Interface: The robot expansion board typically features a motor driver interface, perfect for connecting and controlling motors to drive your robotics projects forward. 3.Sensor Interface: The robot expansion board offers interfaces for connecting a variety of sensor types, such as distance sensors, light sensors, gyroscopes, and more, providing a versatile platform for diverse robotic applications. 4.Expandability: With its rich GPIO expansion interface, this robot expansion board allows you to connect other external devices and modules, meeting the specific needs of your robotics projects. 5.Compatibility: This expansion board is typically suitable for Raspberry Pi 4B and 3B, and it easily integrates with the official Raspberry Pi operating system and software development toolkit, ensuring a smooth and seamless development experience.