16-Channel 12-bit PWM/Servo Driver – PCA9685 I2C Interface

The PCA9685 16-Channel 12-bit PWM Servo Driver Module is a versatile I2C-based controller designed to control multiple servo motors, LEDs, and other PWM devices using Arduino, Raspberry Pi, ESP32, and other compatible microcontrollers. It provides 16 independent PWM channels with 12-bit resolution (4096 steps), allowing smooth and precise control of servo position, LED brightness, and other PWM applications.

Using the I2C communication interface, the PCA9685 requires only two communication lines (SDA and SCL) from the microcontroller, making it an excellent solution when you need to control many servos or PWM outputs while saving GPIO pins.

The module is especially useful for robotics, robotic arms, humanoid robots, RC projects, automation systems, LED control, and DIY electronics projects. Multiple PCA9685 boards can also be connected on the same I2C bus using different addresses, allowing a large number of PWM channels to be controlled from a single controller.

Key Features

• 16 independent PWM channels for servo and PWM device control.
• 12-bit PWM resolution with 4096 adjustable steps.
• I2C interface for simple communication with Arduino, Raspberry Pi, ESP32 and other controllers.
• Uses only 2 communication pins – SDA and SCL.
• Suitable for controlling up to 16 servo motors from one module.
• Compatible with standard hobby servo motors.
• Can be used for LED brightness and PWM speed control.
• Supports multiple modules on the same I2C bus through configurable addresses.
• Helps expand the PWM/output capability of microcontrollers with limited GPIO pins.
• Ideal for robotics and multi-servo applications.
• Compact and easy-to-integrate PCB design.
• Suitable for DIY, educational, prototyping and professional electronics projects.

Applications

• Robotic arm and humanoid robot projects
• Multi-servo robotics projects
• Arduino servo control
• Raspberry Pi servo control
• RC car, boat and aircraft projects
• Hexapod and quadruped robots
• Pan-tilt camera systems
• 3D printer and CNC-related projects
• LED dimming and lighting control
• RGB LED control
• Home automation projects
• Animatronics
• IoT and embedded systems
• DIY electronics and STEM projects

Specialization 

• Module: PCA9685 16-Channel PWM/Servo Driver
• PWM Channels: 16
• PWM Resolution: 12-bit
• Resolution: 4096 steps
• Communication: I2C
• Interface Pins: SDA, SCL
• Output: 16 PWM outputs
• Controller Compatibility: Arduino, Raspberry Pi, ESP32 and other I2C-compatible controllers
• Primary Use: Servo motor and PWM device control
• Control Type: Digital PWM
• Board Type: Breakout/Driver Module

Package Includes

• 1 × PCA9685 16-Channel 12-bit PWM/Servo Driver Module