PCA9685 16 Channel 12 Bit Servo Motor Driver

The PCA9685 16-Channel 12-Bit PWM Servo Motor Driver is a powerful and efficient solution for controlling multiple servo motors or LEDs using just two I2C pins. Based on the NXP PCA9685 IC, this driver board offers precise pulse-width modulation (PWM) output with 12-bit resolution (4096 steps), making it ideal for robotic arms, animatronics, lighting control, and automation systems.

This board communicates via the I2C interface and supports chaining up to 62 boards on the same bus, allowing you to control up to 992 servos or LEDs. It’s fully compatible with popular platforms such as Arduino, Raspberry Pi, ESP32, and STM32. It also includes an external power terminal (up to 6V) to power servo motors without drawing current from the microcontroller, protecting the main board from overcurrent risks.

The PCA9685 driver module operates independently of the main processor once configured, allowing precise and smooth control of motors even when the host CPU is busy. Whether you’re building a robotic project, RC vehicle, or lighting control system, this board delivers reliability, flexibility, and ease of use.

Buy the PCA9685 16-Channel Servo Driver now from eleberric.com, your trusted electronics component supplier in Sri Lanka.

Specification

• IC: NXP PCA9685

• PWM Channels: 16

• PWM Resolution: 12-bit (4096 steps)

• Communication: I2C (address configurable with jumpers)

• I2C Address Range: 0x40–0x7F

• Operating Voltage: 3.3V to 5V (logic level)

• Servo Supply Voltage: Up to 6V (via external terminal block)

• Frequency: Adjustable (up to 1.6 kHz)

• Control Pins: SDA, SCL, VCC, GND

• Dimensions: Approx. 62mm x 26mm x 12mm

• Weight: ~12g

• Mounting Holes: Yes, for easy enclosure integration

• Compatible Microcontrollers: Arduino, ESP32, STM32, Raspberry Pi, and more

Key Features

• Controls 16 servos or LEDs with 12-bit precision

• Uses only 2 I2C pins (supports daisy chaining)

• Configurable I2C address for multiple module use

• Integrated oscillator for stable signal output

• External power input for high-current servos

• Fully compatible with 3.3V or 5V logic

• Pre-soldered headers for plug-and-play convenience

• Open-source libraries available for Arduino and Python

Applications

• Robotic arms and humanoid robots

• RC cars and servo-based actuators

• Animatronics and servo-driven art

• Smart lighting and LED dimming systems

• Multi-axis gimbal control

• DIY automation systems and drones

• Educational robotics and STEM kits