16-Channel PWM Servo Controller

The 16-Channel PWM Servo Controller is a versatile driver board that lets you control up to 16 servos or PWM devices using only two communication pins from your microcontroller (SDA and SCL via I2C). Perfect for robotics, animatronics, hexapods, pan/tilt systems, and other projects requiring many PWM channels, this controller relieves microcontrollers like Arduino, ESP32, and Raspberry Pi from handling individual PWM signals.

It typically uses a dedicated PWM driver chip (such as the PCA9685) to generate stable, high-resolution PWM signals with minimal CPU overhead.

🔹 Key Features

• Controls 16 PWM outputs independently

• High-resolution PWM (often 12-bit / 4096 steps) for smooth servo movement

• I2C interface (uses only two pins: SDA & SCL)

• Multiple boards can be chained using different I2C addresses

• Separate power supply input for servos to protect the microcontroller

• Works with Arduino, ESP32, ESP8266, Raspberry Pi

• Supports both standard and digital servos

• Compatible with common libraries (e.g., Adafruit PWM/Servo library)

🔹 Applications

• Multi-servo robots and robotic arms

• Hexapod and quadruped robots

• Pan/tilt camera or sensor mounts

• Animatronic projects and props

• LED brightness control and lighting effects

• PWM expansion for microcontrollers with limited pins