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Servo Motor Driver Board I2C IIC Module CA9685 16 Channel 12 Bit PWM
Servo Motor Driver Board I2C IIC Module CA9685 16 Channel 12 Bit PWM
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PCA9685 16-Channel 12-Bit PWM Servo Driver Board
Overview
Control up to 16 servo motors or LEDs simultaneously with this high-performance I2C PWM driver board based on the PCA9685 chip. Designed for precision and flexibility, it delivers 12-bit resolution (4096 steps) per channel, enabling smooth motion control and accurate brightness adjustment. Ideal for robotics, RC models, lighting systems, and embedded electronics projects.
The board communicates via the I2C interface, requiring only two control pins from your microcontroller. Its chainable design allows you to connect up to 62 boards, providing control for 992 PWM outputs — perfect for large-scale automation or light control systems.
Key Features
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16 Independent Channels: Control up to 16 servos or LEDs simultaneously.
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High Precision: 12-bit resolution (4096 steps) with ~4µs step size at 60Hz.
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I2C Interface: Only two communication lines needed (SDA & SCL).
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Daisy-Chain Support: Connect up to 62 boards for a total of 992 PWM outputs.
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Built-in Protection: Each output channel includes a 220Ω series resistor.
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Adjustable PWM Frequency: Up to 1.6kHz with programmable duty cycles.
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Output Enable Pin: Instantly disable all outputs when needed.
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Wide Voltage Range: Operates from 5V–10V DC (servo power), compatible with 3.3V or 5V logic.
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Compact Design: 60 × 25 × 13mm with grouped 3-pin servo headers for easy wiring.
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LED Indicator: Power status light for quick diagnostics.
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Reverse Polarity Protection: Safeguards against incorrect power connections.
Technical Specifications
| Parameter | Specification |
|---|---|
| Chip | NXP PCA9685 |
| Control Interface | I2C (address-selectable via jumpers) |
| Operating Voltage | Logic: 3.3V–5V, Servo Power: 5–10V |
| PWM Resolution | 12-bit (4096 steps) |
| PWM Frequency Range | Up to 1.6 kHz |
| Channels | 16 |
| Daisy-Chain Capacity | Up to 62 boards (992 outputs) |
| Protection | 220Ω resistors per output, reverse polarity on power input |
| Board Dimensions | 62 × 25 × 13 mm (2.4″ × 1.0″ × 0.5″) |
Applications
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Robotic arm and servo control
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LED dimming and color mixing (RGB, RGBA)
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DIY mechatronics projects
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Smart lighting systems
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RC models and animatronics
Compatibility
Compatible with all I2C-enabled microcontrollers including Arduino, Raspberry Pi, ESP32, STM32, and Micro:bit.
Customer Satisfaction
We’re committed to making your projects easier and more enjoyable. If you experience any issues, contact us for quick and helpful support — we’re happy to help you get the most from your PCA9685 module!
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