PCA9685 16 Channel PWM Servo Driver IIC For Arduino Pi

The PCA9685 16 Channel PWM Servo Driver IIC For Arduino Pi is a compact, I2C-based PWM controller designed to simplify multi-servo and LED projects. With a built-in PWM engine and clock, it offloads timing from your microcontroller, delivering precise, reliable motion and lighting control. Scale up with ease: connect up to 62 driver boards on a single I2C bus for a total of 992 PWM outputs—perfect for large robotics or intricate lighting setups. Enjoy flexible PWM control with approximately 1.6 kHz adjustable frequency and 12-bit resolution, and choose between push-pull or open-drain outputs to suit different devices. This module is 5V logic compatible and can safely drive up to 6V outputs, making it ideal for Arduino, Raspberry Pi, and other microcontrollers while keeping your main processor free to handle higher-level tasks.

Benefits & Tips

• Offload PWM timing from your microcontroller to the integrated PCA9685 PWM driver via I2C, reducing bandwidth usage on your Arduino or Raspberry Pi.
• Massive scalability: connect up to 62 driver boards on one I2C bus for a total of 992 PWM outputs, enabling complex servo rigs and expansive LED displays.
• Flexible control: 12-bit PWM resolution with ~1.6 kHz adjustable frequency and options for push-pull or open-drain outputs to match your load requirements.

Product specifications

• Origin: Mainland China
• Type: Module
• Model Number: PWM Servo Driver Board
• Channels: 16
• PWM Resolution: 12-bit
• PWM Frequency: Adjustable, approximately 1.6 kHz
• Logic Compatibility: 5V logic; safe 6V output
• I2C Interface: Built-in PWM driver and clock (no constant signaling required from MCU)
• Addressing: 6 address selection pins; up to 62 boards on one I2C bus
• Output Modes: Push-pull or open-drain
• Recommended Capacitance: Place a large capacitor on the V+ line (e.g., 10V 1000µF)
• Servo Connections: Supports 16 servos in 4 sets of 3-pin connectors
• Protection: Reverse polarity protection on input terminal block
• Cascade Design: Ready for stacking with other modules
• Size: 62.00 x 25.00 x 13.00 mm
• Notes: PCA9685 chip positioned at the board center

Package includes:

• PCA9685 16 Channel PWM Servo Driver Board Module

Warnings / Reminders

• This board is 5V logic compatible and can be controlled by a 3.3V microcontroller while driving up to 6V outputs.
• Use a large capacitor on the V+ line as recommended to ensure stable operation in some setups.
• Ensure proper wiring: 16 servo connections are grouped as four 3-pin connectors (servos with 0.1" spacing fit four pairs).
• For protection, place a 220 Ω resistor on all PWM output lines when driving LEDs or sensitive loads.

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