PCA9685PW 16-Channel 12-bit PWM/Servo Driver – I2C Interface

The PCA9685PW is a high-performance 16-channel, 12-bit PWM/servo driver with an I2C interface, designed to provide precise and efficient pulse-width modulation (PWM) control for LEDs, servos, and other actuators. This versatile driver is perfect for robotics, lighting control, motor control, and other embedded applications requiring multiple independent PWM outputs.

Key Features:

✔ 16 Independent PWM Channels – Controls up to 16 servos or LEDs simultaneously.
✔ 12-bit Resolution – Provides 4096-step PWM control for precise signal modulation.
✔ I2C Interface (up to 1 MHz Fast Mode Plus) – Easy communication with microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32.
✔ Adjustable PWM Frequency – Supports a programmable PWM frequency up to 1.6 kHz.
✔ Built-in Oscillator – No need for additional external timing components.
✔ External Power Support – Can drive servos and motors without overloading the microcontroller.
✔ Multiple Board Stacking – Addressable I2C feature allows up to 62 PCA9685 modules on the same bus.

Applications:

🔹 Robotics and servo motor control
🔹 LED lighting and dimming control
🔹 Motor speed control
🔹 Signal generation for embedded systems
🔹 IoT and home automation projects

The PCA9685PW simplifies multi-channel PWM control, making it an ideal solution for makers, engineers, and professionals working with advanced motor and lighting applications. 🚀

Related documents:

• PCA9685 datasheet
• Arduino driver library
• EagleCAD PCB files on GitHub
• 3D models on GitHub
• Fritzing object in the Adafruit Fritzing library

For using the PCA9685PW with an Arduino, you can use the Adafruit PWM Servo Driver Library, which simplifies the I2C communication and PWM control.

Step 1: Install Required Library

1. Open Arduino IDE.
2. Go to Sketch → Include Library → Manage Libraries.
3. Search for Arduino driver library and install it.

Step 2: Basic Arduino Code for PCA9685

This code initializes the PCA9685 and controls a servo on channel 0. Click here