PCA9685 16-Channel 12-Bit PWM Servo Motor Driver Module – I2C Controller for Arduino, ESP32 & Raspberry Pi
Rs. 289.00
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PCA9685 16-Channel 12-Bit PWM Servo Motor Driver Module – I2C Controller for Arduino, ESP32 & Raspberry Pi
Rs. 289.00
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The PCA9685 16-Channel PWM Servo Driver Module is a versatile 12-bit PWM controller designed to control multiple servos, LEDs, and other PWM-based devices using a simple I2C interface. It is based on the PCA9685 PWM controller IC and can generate up to 16 independent PWM outputs.
One of the biggest advantages of the PCA9685 is that it handles PWM generation independently from the microcontroller. This allows development boards such as Arduino, ESP32, ESP8266, Raspberry Pi, and STM32 to control multiple servos without using a large number of GPIO pins or continuously generating PWM signals in software.
The module is particularly useful for robotic arms, hexapod robots, pan-tilt systems, multi-servo robots, LED controllers, animatronics, and automation projects.
🚀 Key Features
- 16 independent PWM output channels
- 12-bit PWM resolution (4096 steps)
- I2C-controlled interface
- Requires only two communication lines: SDA and SCL
- Adjustable PWM frequency
- Suitable for controlling multiple servo motors
- Can also be used for LED brightness control
- Compatible with Arduino, ESP32, Raspberry Pi, ESP8266, and STM32
- Multiple PCA9685 modules can be connected using different I2C addresses
- Significantly reduces the number of GPIO pins required
📊 Technical Specifications
| Parameter | Specification |
|---|---|
| Controller IC | PCA9685 |
| PWM Channels | 16 |
| PWM Resolution | 12-bit |
| Interface | I2C |
| I2C Address | 0x40 default (configurable) |
| PWM Frequency | Approximately 24Hz – 1526Hz |
| Logic Voltage | Typically 3.3V / 5V compatible |
| Servo Power Supply | Separate V+ supply |
| Output Channels | 16 × PWM |
| Applications | Servo, LED & PWM control |
Specifications may vary slightly depending on the module revision.
📦 Package Includes
- 1 × PCA9685 16-Channel PWM Servo Driver Module
💡 Recommended Applications
- Robotic arms
- Humanoid and multi-servo robots
- Hexapod robots
- RC projects
- Pan-tilt camera systems
- Servo motor control
- LED dimming and lighting systems
- Animatronics
- Smart automation systems
- Arduino robotics projects
- ESP32 multi-servo projects
- Raspberry Pi robotics
- IoT actuator control
🔌 Typical Connections
PCA9685 → Microcontroller
| PCA9685 | Arduino UNO | ESP32 |
|---|---|---|
| VCC | 5V | 3.3V |
| GND | GND | GND |
| SDA | A4 | GPIO 21* |
| SCL | A5 | GPIO 22* |
*ESP32 I2C pins can be configured in software.
Important: The V+ terminal is used to provide the appropriate external power supply for connected servos. Do not rely on the microcontroller's 5V/3.3V supply to power multiple servos.
🌟 Why Choose the PCA9685 Module?
- Control up to 16 PWM devices using only two I2C lines
- Excellent solution for projects with limited GPIO availability
- Dedicated PWM generation reduces microcontroller workload
- Ideal for controlling multiple servo motors simultaneously
- Easy integration with popular development boards
- Expandable for projects requiring many PWM channels
- Perfect for robotics, automation, and embedded applications